IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Comparison of Seismic Behaviour of Multi Storey Reinforced concrete Structur...IJRAT
This document summarizes a study analyzing the seismic behavior of dual systems in a G+14 reinforced concrete building using different shear wall arrangements. Five models were analyzed: a bare frame; SMRF and shear walls at corners; SMRF and shear walls at the perimeter; flat slab and shear walls at corners; and flat slab and shear walls at the perimeter. Nonlinear static pushover analysis found that a flat slab and shear walls at corners configuration had the highest base shear and story shears. Story drift was lowest with a flat slab and shear wall combination. The bare frame model performed most poorly seismic zone V due to the lack of a lateral load resisting system. Overall, the dual systems considered provided life safety performance under seismic
A COMPARATIVE STUDY OF OMRF & SMRF STRUCTURAL SYSTEM USING DIFFERENT SOFTWARESAM Publications
This study is carried out to investigate the seismic behaviour of the structure having various structural configurations
like OMRF (Ordinary Moment Resisting Frames), SMRF (Special Moment Resisting Frames) using different softwares i.e.
Stadd.Pro & Etabs. A comparative study of all the types of frames will shed light on the best suited frame to be adopted for seismic
loads in Indian scenario. For this purpose, a G+6 storey R.C.C. regular building are analysed for OMRCF, SMRCF framing
configurations in Seismic Zone III & IV according to Indian codes. Linear static Analysis or Equivalent static Analysis are carried
out to evaluate their structural efficiencies in terms of storey drifts, average storey displacement, Time period. In OMRF structures
the design and detailing of reinforcement are executed as per the guide lines of I.S. 456-2000 which make the structure less tough
and ductile in comparison of SMRF structures. The basic approach of earthquake resistant design should be based on lateral
strength as well as deformability and ductility capacity of structure .In SMRF structures Beams, columns, and beam-column joints
are proportioned and detailed as per I.S. code 13920(2002) which give adequate toughness and ductility to resist severe earthquake
shock without collapse. Thus it has been observed that SMRF structures behave well in earthquake than OMRF structures.
Analysis and Optimum Design for Steel Moment Resisting Frames to Seismic Exci...IJCMESJOURNAL
The essential purpose of this wander is to develop an Interior Penalty Function (IPF) based estimation to multi-storey steel traces for slightest weight of frames. The frames are proposed for contradicting even impact in view of seismic stacking close by gravity forces. Various structural stems are used for restricting seismic (lateral) forces; however steel moment resisting frames (MRFs) are considered for the present work. The framework solidifies codal courses of action of IS 800-2007, as needs be gets the edges with perfect weight for in-plane moments with lateral support of beam element. Strength and buckling criteria are considered as direct goals close by side constraints in formulating optimization problem. A Software program is made that uses an interior penalty function (IPF) for weight minimization of two-dimensional moment restricting steel encompassed structures. The program uses MATLAB, performs one dimensional interest, and structural design in an iterative technique. The design cases have exhibited that the proposed estimation gives a beneficial instrument to the practicing fundamental algorithm. The program is associated with 6 and 9 storey (4 bays) moment resisting frames (MRFs). The program showed its capacity of optimizing the largeness of two medium size frames. To get part obliges in frames an examination technique must be associated. In the present work Equivalent Lateral Force framework (ELF) and material nonlinear time history analysis (NTH) are associated and perfect qualities gained from both the examinations are contemplated.
A comparative study of omrf & smrf structural system for tall & high ...eSAT Journals
Abstract The objective of this study is to investigate the seismic behavior of the structure i.e... OMRF (Ordinary moment resisting frame) & SMRF (Special R C moment Resisting frame). For this purpose 5th, 10th, 15th , 20th storied structure were modeled and analysis was done using Staad.Pro software and using the codes for analysis, IS 1893:2002, IS 456: 2000. The study assumed that the buildings were located in seismic zone II (Visakhapatnam region).The study involves the design of alternate shear wall in a structural frame and its orientation, which gives better results for the OMRF & SMRF structure constructed in and around Visakhapatnam region. The buildings are modeled with floor area of 600 sqm (20m x30m) with 5 bays along 20 m span each 4 m. and 5 bays along the 30 m span each 6 m. The design is carried out using STAAD.PRO software. Shear walls are designed by taking the results of the maximum value of the stress contour and calculation are done manually by using IS 456-2000 and IS 13920-1993. The displacements of the current level relative to the other level above or below are considered. The preferred framing system should meet drift requirements.
1. Up to 20 floored building subjected to seismic load for Visakhapatnam without shear wall
2. Up to 20 floored building subjected to seismic load for Visakhapatnam with shear wall
Key words: Seismic Behavior, Shear Wall, Orientation of shear wall, Story Drift, Serviceability. staad.pro
Parametric Evaluation of Tall Structure with Various Lateral Load Resisting S...ijtsrd
The high rise buildings are majorly suffering with seismic forces, it can be found out by displacement parameter. The more the displacement the lesser will be the stiffness of the structure. The static analysis is having higher displacement value than response spectrum analysis. The increase in percentage is about 17 . This will increase the construction cost due to increase in stiffness. The base shear value increases with increase in weight of the structure. However, the diagrid structure seems to be having lesser weight than all other models. From the overall analysis it is proved that, diagrid structure is very much effective than any other structure. However, in case of constraint in providing diagrid due to its architectural features, the outrigger system with bracing will be very much effective. Mahadevaprasad M | B S Sureshchandra "Parametric Evaluation of Tall Structure with Various Lateral Load Resisting Systems Subjected to Dynamic Loadings" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33654.pdf Paper Url: https://www.ijtsrd.com/engineering/structural-engineering/33654/parametric-evaluation-of-tall-structure-with-various-lateral-load-resisting-systems-subjected-to-dynamic-loadings/mahadevaprasad-m
The document discusses different bracing systems for steel lattice towers and identifies the optimal bracing system. It analyzes towers of heights 40m and 50m with different bracing configurations including X-B, single diagonal, X-X, K, and Y bracings. The towers are modeled and analyzed for wind loads. Results show that the Y bracing system has the lowest weight and is most economical for resisting lateral loads for towers up to 50m height. Therefore, the study identifies the Y bracing system as the optimal bracing configuration for this height range of towers.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
ANALYSIS OF STEEL FRAMES WITH BRACINGS FOR SEISMIC LOADSIAEME Publication
In recent decants steel structure had played an important role in construction
industry. Providing strength, stability, ductility for buildings designed for seismic
loads. It is necessary to design a structure that can withstand under seismic loads.
Providing steel knee braces is one of the structural systems used to resist earthquake
forces on structures. Steel bracing is economical, easy to erect and occupies less
space which is flexible to design to meet the required strength and stiffness. There are
various types of steel bracing (X, knee bracing). In knee brace frame system (KBFS)
the non-buckling diagonal bracing provide most of the lateral stiffness, the flexural
yielding of knee element. In our project a 6 storey steel frame building with knee
bracing system with floor plan of 9 m x 9m is considered. We studied the performance
of a 6 storied steel frame building with knee bracing system and compared with bare
frame. Pushover analysis, equivalent static analysis, Response Spectrum analysis,
Time history analysis is performed in ETABS based on IS 1893:2002 (part 1)
guidelines. The manual calculation was done on the basis of Equivalent static analysis
and Response spectrum analysis to find out base shear for foundation and lateral
force for each storey deck slab and compared the values with bare frame. Depending
on the complexity in the problem for bracing models, we had used Etabs software in
order to analysis the Base shear and lateral shear. The results were plotted in the
form of graphs and tables for their inter storey drift and inter storey displacement.
Comparison of Seismic Behaviour of Multi Storey Reinforced concrete Structur...IJRAT
This document summarizes a study analyzing the seismic behavior of dual systems in a G+14 reinforced concrete building using different shear wall arrangements. Five models were analyzed: a bare frame; SMRF and shear walls at corners; SMRF and shear walls at the perimeter; flat slab and shear walls at corners; and flat slab and shear walls at the perimeter. Nonlinear static pushover analysis found that a flat slab and shear walls at corners configuration had the highest base shear and story shears. Story drift was lowest with a flat slab and shear wall combination. The bare frame model performed most poorly seismic zone V due to the lack of a lateral load resisting system. Overall, the dual systems considered provided life safety performance under seismic
A COMPARATIVE STUDY OF OMRF & SMRF STRUCTURAL SYSTEM USING DIFFERENT SOFTWARESAM Publications
This study is carried out to investigate the seismic behaviour of the structure having various structural configurations
like OMRF (Ordinary Moment Resisting Frames), SMRF (Special Moment Resisting Frames) using different softwares i.e.
Stadd.Pro & Etabs. A comparative study of all the types of frames will shed light on the best suited frame to be adopted for seismic
loads in Indian scenario. For this purpose, a G+6 storey R.C.C. regular building are analysed for OMRCF, SMRCF framing
configurations in Seismic Zone III & IV according to Indian codes. Linear static Analysis or Equivalent static Analysis are carried
out to evaluate their structural efficiencies in terms of storey drifts, average storey displacement, Time period. In OMRF structures
the design and detailing of reinforcement are executed as per the guide lines of I.S. 456-2000 which make the structure less tough
and ductile in comparison of SMRF structures. The basic approach of earthquake resistant design should be based on lateral
strength as well as deformability and ductility capacity of structure .In SMRF structures Beams, columns, and beam-column joints
are proportioned and detailed as per I.S. code 13920(2002) which give adequate toughness and ductility to resist severe earthquake
shock without collapse. Thus it has been observed that SMRF structures behave well in earthquake than OMRF structures.
Analysis and Optimum Design for Steel Moment Resisting Frames to Seismic Exci...IJCMESJOURNAL
The essential purpose of this wander is to develop an Interior Penalty Function (IPF) based estimation to multi-storey steel traces for slightest weight of frames. The frames are proposed for contradicting even impact in view of seismic stacking close by gravity forces. Various structural stems are used for restricting seismic (lateral) forces; however steel moment resisting frames (MRFs) are considered for the present work. The framework solidifies codal courses of action of IS 800-2007, as needs be gets the edges with perfect weight for in-plane moments with lateral support of beam element. Strength and buckling criteria are considered as direct goals close by side constraints in formulating optimization problem. A Software program is made that uses an interior penalty function (IPF) for weight minimization of two-dimensional moment restricting steel encompassed structures. The program uses MATLAB, performs one dimensional interest, and structural design in an iterative technique. The design cases have exhibited that the proposed estimation gives a beneficial instrument to the practicing fundamental algorithm. The program is associated with 6 and 9 storey (4 bays) moment resisting frames (MRFs). The program showed its capacity of optimizing the largeness of two medium size frames. To get part obliges in frames an examination technique must be associated. In the present work Equivalent Lateral Force framework (ELF) and material nonlinear time history analysis (NTH) are associated and perfect qualities gained from both the examinations are contemplated.
A comparative study of omrf & smrf structural system for tall & high ...eSAT Journals
Abstract The objective of this study is to investigate the seismic behavior of the structure i.e... OMRF (Ordinary moment resisting frame) & SMRF (Special R C moment Resisting frame). For this purpose 5th, 10th, 15th , 20th storied structure were modeled and analysis was done using Staad.Pro software and using the codes for analysis, IS 1893:2002, IS 456: 2000. The study assumed that the buildings were located in seismic zone II (Visakhapatnam region).The study involves the design of alternate shear wall in a structural frame and its orientation, which gives better results for the OMRF & SMRF structure constructed in and around Visakhapatnam region. The buildings are modeled with floor area of 600 sqm (20m x30m) with 5 bays along 20 m span each 4 m. and 5 bays along the 30 m span each 6 m. The design is carried out using STAAD.PRO software. Shear walls are designed by taking the results of the maximum value of the stress contour and calculation are done manually by using IS 456-2000 and IS 13920-1993. The displacements of the current level relative to the other level above or below are considered. The preferred framing system should meet drift requirements.
1. Up to 20 floored building subjected to seismic load for Visakhapatnam without shear wall
2. Up to 20 floored building subjected to seismic load for Visakhapatnam with shear wall
Key words: Seismic Behavior, Shear Wall, Orientation of shear wall, Story Drift, Serviceability. staad.pro
Parametric Evaluation of Tall Structure with Various Lateral Load Resisting S...ijtsrd
The high rise buildings are majorly suffering with seismic forces, it can be found out by displacement parameter. The more the displacement the lesser will be the stiffness of the structure. The static analysis is having higher displacement value than response spectrum analysis. The increase in percentage is about 17 . This will increase the construction cost due to increase in stiffness. The base shear value increases with increase in weight of the structure. However, the diagrid structure seems to be having lesser weight than all other models. From the overall analysis it is proved that, diagrid structure is very much effective than any other structure. However, in case of constraint in providing diagrid due to its architectural features, the outrigger system with bracing will be very much effective. Mahadevaprasad M | B S Sureshchandra "Parametric Evaluation of Tall Structure with Various Lateral Load Resisting Systems Subjected to Dynamic Loadings" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33654.pdf Paper Url: https://www.ijtsrd.com/engineering/structural-engineering/33654/parametric-evaluation-of-tall-structure-with-various-lateral-load-resisting-systems-subjected-to-dynamic-loadings/mahadevaprasad-m
The document discusses different bracing systems for steel lattice towers and identifies the optimal bracing system. It analyzes towers of heights 40m and 50m with different bracing configurations including X-B, single diagonal, X-X, K, and Y bracings. The towers are modeled and analyzed for wind loads. Results show that the Y bracing system has the lowest weight and is most economical for resisting lateral loads for towers up to 50m height. Therefore, the study identifies the Y bracing system as the optimal bracing configuration for this height range of towers.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
ANALYSIS OF STEEL FRAMES WITH BRACINGS FOR SEISMIC LOADSIAEME Publication
In recent decants steel structure had played an important role in construction
industry. Providing strength, stability, ductility for buildings designed for seismic
loads. It is necessary to design a structure that can withstand under seismic loads.
Providing steel knee braces is one of the structural systems used to resist earthquake
forces on structures. Steel bracing is economical, easy to erect and occupies less
space which is flexible to design to meet the required strength and stiffness. There are
various types of steel bracing (X, knee bracing). In knee brace frame system (KBFS)
the non-buckling diagonal bracing provide most of the lateral stiffness, the flexural
yielding of knee element. In our project a 6 storey steel frame building with knee
bracing system with floor plan of 9 m x 9m is considered. We studied the performance
of a 6 storied steel frame building with knee bracing system and compared with bare
frame. Pushover analysis, equivalent static analysis, Response Spectrum analysis,
Time history analysis is performed in ETABS based on IS 1893:2002 (part 1)
guidelines. The manual calculation was done on the basis of Equivalent static analysis
and Response spectrum analysis to find out base shear for foundation and lateral
force for each storey deck slab and compared the values with bare frame. Depending
on the complexity in the problem for bracing models, we had used Etabs software in
order to analysis the Base shear and lateral shear. The results were plotted in the
form of graphs and tables for their inter storey drift and inter storey displacement.
Finite Element Modeling On Behaviour Of Reinforced Concrete Beam Column Joint...IJERA Editor
Recent earthquakes have demonstrated that most of the reinforced concrete structures were severely damaged during earthquakes and they need major repair works. Beam column joints, being the lateral and vertical load resisting members in reinforced concrete structures are particularly vulnerable to failures during earthquakes. The existing reinforced concrete beam column joints which are not designed as per code IS13920:1993 must be strengthened since they do not meet the ductility requirements. The Finite element method (FEM) has become a staple for predicting and simulating the physical behaviour of complex engineering systems. The commercial finite element analysis (FEA) programs have gained common acceptance among engineers in industry and researchers. The details of the finite element analysis of beam column joints retrofitted with carbon fibre reinforced polymer sheets (CFRP) carried out using the package ANSYS are presented in this paper. Three exterior reinforced concrete beam column joint specimens were modelled using ANSYS package. The first specimen is the control specimen. This had reinforcement as per code IS 456:2000. The second specimen which is also the control specimen. This had reinforcement as per code IS 13920:1993. The third specimen had reinforcement as per code IS 456:2000 and was retrofitted with carbon fibre reinforced polymer (CFRP) sheets. During the analysis both the ends of column were hinged. Static load was applied at the free end of the cantilever beam up to a controlled load. The performance of the retrofitted beam column joint was compared with the control specimens and the results are presented in this paper.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IRJET- Comparative Study of Different Bracing Systems in RCC Buildings using ...IRJET Journal
This document compares the seismic behavior of reinforced concrete buildings with different bracing systems using STAAD.Pro software. Four 15-story building models are analyzed: a moment resisting frame building and buildings with X-bracing, V-bracing, and diagonal bracing. The bracing systems are found to increase base shear and reduce story displacement compared to the non-braced building, indicating improved seismic performance. Of the braced buildings, the one with X-bracing performs best with the lowest displacements and highest base shear. The study concludes X-bracing is the most effective bracing system for seismic resistance of tall reinforced concrete buildings.
IRJET- A Study of Various Structural Framing Systems Subjected to Seismic LoadsIRJET Journal
This document summarizes previous research on analyzing the seismic behavior of different structural framing systems. Studies have compared the performance of Ordinary Moment Resisting Frames (OMRF) and Special Moment Resisting Frames (SMRF) in various seismic zones. The current study aims to compare the behavior of OMRF and SMRF structures in zones 3, 4, and 5 under seismic loads. It also examines using lightweight materials like siporex in zone 5 to improve seismic performance.
Effect of steel bracing on vertically irregular r.c.c building frames under s...eSAT Journals
Abstract
Earthquakes are one of the most life threatening, environmental hazardous and destructive natural phenomenons that causes
shaking of ground. This result in damage to the structures, hence we need to design the buildings to withstand these earthquakes
which may occur at least once in the life time of the structure. Structures possess less stiffness and strength in case of irregular
configured frames; to enhance this, lateral load resisting systems are introduced into the frames. In this study, G+5 storey
building model has been analyzed considering different types of vertical geometric irregularities and steel bracings using
pushover analysis with the help of ETABS 9.7 software. Addition of X type brace, V type Brace and Inverted V/K type brace shows
that use of X-type of bracing is found more suitable to enhance the performance of the irregular buildings.
Key Words: pushover analysis, vertical irregularity, steel bracings, performance point.
Design and analysis for supporting system of circular ESR for different seism...IRJET Journal
This document analyzes and compares the design of supporting systems for circular elevated water tanks of the same 300m3 capacity located in different seismic zones (II, III, and IV) in India. The study models the tank and conducting response spectrum analysis to calculate seismic forces - shear force, axial force, and bending moment - induced on peripheral and interior columns under full and empty tank conditions. Results show seismic forces generally increase with higher seismic zone and are greater for interior columns compared to peripheral columns. For Zone IV, interior columns fail the bending moment check, indicating larger column sizes are needed. In conclusion, seismic forces on a tank's supporting structure vary significantly based on the seismic zone and column location.
IRJET- A Review on Behaviour of Columns of Steel Framed Structure with Va...IRJET Journal
This document reviews the behavior of columns in steel framed structures using various steel sections. It summarizes several previous studies that analyzed the behavior and performance of columns with conventional and tubular steel sections. The studies concluded that tubular sections provide more efficient and economical designs, saving up to 50% in costs compared to conventional sections. Tubular sections are well-suited for columns with larger unsupported lengths and can provide overall cost savings for structural designs. However, more research is needed to directly compare the behavior of columns constructed with conventional versus tubular steel sections.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IRJET- Study of Behavior Parameters of the Building with Variations in Story ...IRJET Journal
This document discusses a study that analyzes the behavior of buildings with variations in story height and number of bays using different structural frame configurations. Ordinary moment resisting frames (OMRF) and special moment resisting frames (SMRF) are considered. Buildings are modeled and pushover analysis is performed using SAP2000 software. Behavior parameters are calculated from pushover curves and compared to investigate the performance of OMRF and SMRF structures. The objective is to determine the appropriate type of frame to use for seismic loads in different scenarios.
Study of variations in dynamic stability of tall structure corresponding to s...ijceronline
Construction of tall buildings, both residential and commercial are in insistance. In case of tall structure high lateral forces develops due to earthquake load and wind load are crucial. Thus the effects of lateral loads needs consideration for strength and stability of the structures. In tall buildings, lateral loads are critical as it increases drastically after a certain height of the structure. Shear wall systems are one of the most commonly used dynamic load resisting systems in high-rise buildings which help in achieving strength and stability along with economy. In this study, an attempt has been carried out to check the dynamic stability of a tall residential structure by applying variations symmetric arrangement of the shear wall. The Case study of a 26 storied RCC structure situated in Pune region of Maharashtra, India has been carried out. The effect of location of shear wall on dynamic behaviour of building is analysed using ETABS software using response spectrum method for earthquake analysis and IS875 (III) for wind analysis. The proposed position of shear wall gives the effective results as compare to other position.
Comparison of bracings and shear walls as seismic strengthening methods to bu...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
This document reviews the behavior of special moment resisting frames (SMRFs) and intermediate moment resisting frames (IMRFs) during earthquakes. SMRFs are designed to withstand significant inelastic deformations in high seismic regions, while IMRFs are intended for moderate deformations in low to mid seismic areas. SMRFs have stricter design requirements than IMRFs. Analysis showed that SMRFs have greater collapse capacity and longer progressive collapse duration than IMRFs, reducing risk of structural sidesway collapse by 33.4% compared to IMRFs. The use of SMRFs also increases required column longitudinal reinforcement by 40% over IMRFs.
Behavior of plan irregularites using composite members by varying column spac...eSAT Journals
Abstract
Several studies proofs that the weaker columns has low seismic resistance, for this it is need to make the column stronger. The stronger columns can be obtained by many ways, here in this paper steel-concrete composite columns are considered. Use of composite columns in construction reduces the cross-section of the columns throughout the building and also increases the lateral-load resisting capacity to columns. The models consists of G+10, G+15, G+20 stories of Rectangular, L, T and plus shaped structures in which column spacing are varied as 3m, 4m, 5m and 6m along both directions in all structures. For all models the composite-column of size 450x450mm (ISMB 250) is kept constant, only the beam size has been varied accordingly while modeling a structure. The Response Spectrum analysis is done for all the buildings using ETABS version 15. Study is based on the performance of a multi-story building with plan irregularity under major earthquake forces by considering parameters like displacement, storey shear and drifts. Even though the cross section of the column considered is very small for tall buildings, the structure behaves stiff for severe seismic zone-V and also for different conditions; this is done by introducing steel-concrete composite column in a given building. Hence it is concluded that the use of composite columns in construction resists the lateral forces for many vulnerable conditions.
Keywords: Composite Column, Irregular Structure, Seismic Zone, Varying Height, Column Spacing.
Design and economical of roof trusses & purlins (comparison of limit state an...eSAT Publishing House
This document compares the limit state method and working stress method for designing roof trusses and purlins using light gauge steel sections. It analyzes fink type roof trusses and channel section purlins using both methods while keeping other parameters constant. The limit state method results in higher bending strength, load capacity, and less deflection and buckling compared to the working stress method. However, the working stress method proves to be more economical. The study aims to determine the most economical and structurally sound design method.
IRJET - Analysis of Flat Slab Structural System in Different Earthquake Zones...IRJET Journal
1) The document analyzes the seismic performance of flat slab structural systems in different earthquake zones of India.
2) It models a 5-story flat slab building in the earthquake zones II-V and analyzes required steel in columns, nodal displacements, and plate stresses.
3) The results show that steel requirements and displacements remain nearly constant from zones II-IV but sharply increase in zone V, indicating flat slabs perform poorly in high seismic zones.
The Study on Behaviour of Outriggers for Tall Buildings Subjected to Lateral ...IRJET Journal
1) The document discusses the use of outriggers in tall buildings to reduce structural damage from lateral loads like wind and seismic loads.
2) Outriggers connect the central core wall to exterior columns, increasing the building's stiffness and resistance to overturning moments from lateral loads.
3) Studies show that using multiple outriggers and optimizing their placement can significantly reduce building deflection, drift, and core wall bending moments compared to buildings without outriggers. Virtual outrigger systems using belt trusses can also provide benefits while avoiding issues of conventional outrigger designs.
IRJET- Seismic Analysis of Steel Frame Building using Bracing in ETAB SoftwareIRJET Journal
This paper compares the seismic analysis of a G+11 square building and L-shaped building using time history analysis in ETAB 17.01 software. Different types of bracing systems are used, including X, V, inverted V, and diagonal bracing. The response of the buildings is compared in terms of displacement, base shear, and pseudo acceleration to determine which type of building and bracing system provides the minimum response. The L-shaped building with X bracing is found to have the minimum displacement, while the square building with X bracing has the minimum base shear and pseudo acceleration.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This study experimentally investigates the effect of hybridizing jute and glass fibers on the mechanical properties of polyester composites. Jute fiber reinforced polyester composites (JFRPC), glass fiber reinforced polyester composites (GFRPC), and various hybrid fiber reinforced polyester composites (HFRPC) were fabricated and tested. Tensile and flexural testing showed that HFRPC exhibited higher strength properties than JFRPC or GFRPC alone, due to the combined properties of both natural jute and synthetic glass fibers. In particular, composites with 2% jute fiber and varying amounts of glass fiber achieved comparable strengths to GFRPC at a lower cost. Therefore, hybridizing jute and glass
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Finite Element Modeling On Behaviour Of Reinforced Concrete Beam Column Joint...IJERA Editor
Recent earthquakes have demonstrated that most of the reinforced concrete structures were severely damaged during earthquakes and they need major repair works. Beam column joints, being the lateral and vertical load resisting members in reinforced concrete structures are particularly vulnerable to failures during earthquakes. The existing reinforced concrete beam column joints which are not designed as per code IS13920:1993 must be strengthened since they do not meet the ductility requirements. The Finite element method (FEM) has become a staple for predicting and simulating the physical behaviour of complex engineering systems. The commercial finite element analysis (FEA) programs have gained common acceptance among engineers in industry and researchers. The details of the finite element analysis of beam column joints retrofitted with carbon fibre reinforced polymer sheets (CFRP) carried out using the package ANSYS are presented in this paper. Three exterior reinforced concrete beam column joint specimens were modelled using ANSYS package. The first specimen is the control specimen. This had reinforcement as per code IS 456:2000. The second specimen which is also the control specimen. This had reinforcement as per code IS 13920:1993. The third specimen had reinforcement as per code IS 456:2000 and was retrofitted with carbon fibre reinforced polymer (CFRP) sheets. During the analysis both the ends of column were hinged. Static load was applied at the free end of the cantilever beam up to a controlled load. The performance of the retrofitted beam column joint was compared with the control specimens and the results are presented in this paper.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IRJET- Comparative Study of Different Bracing Systems in RCC Buildings using ...IRJET Journal
This document compares the seismic behavior of reinforced concrete buildings with different bracing systems using STAAD.Pro software. Four 15-story building models are analyzed: a moment resisting frame building and buildings with X-bracing, V-bracing, and diagonal bracing. The bracing systems are found to increase base shear and reduce story displacement compared to the non-braced building, indicating improved seismic performance. Of the braced buildings, the one with X-bracing performs best with the lowest displacements and highest base shear. The study concludes X-bracing is the most effective bracing system for seismic resistance of tall reinforced concrete buildings.
IRJET- A Study of Various Structural Framing Systems Subjected to Seismic LoadsIRJET Journal
This document summarizes previous research on analyzing the seismic behavior of different structural framing systems. Studies have compared the performance of Ordinary Moment Resisting Frames (OMRF) and Special Moment Resisting Frames (SMRF) in various seismic zones. The current study aims to compare the behavior of OMRF and SMRF structures in zones 3, 4, and 5 under seismic loads. It also examines using lightweight materials like siporex in zone 5 to improve seismic performance.
Effect of steel bracing on vertically irregular r.c.c building frames under s...eSAT Journals
Abstract
Earthquakes are one of the most life threatening, environmental hazardous and destructive natural phenomenons that causes
shaking of ground. This result in damage to the structures, hence we need to design the buildings to withstand these earthquakes
which may occur at least once in the life time of the structure. Structures possess less stiffness and strength in case of irregular
configured frames; to enhance this, lateral load resisting systems are introduced into the frames. In this study, G+5 storey
building model has been analyzed considering different types of vertical geometric irregularities and steel bracings using
pushover analysis with the help of ETABS 9.7 software. Addition of X type brace, V type Brace and Inverted V/K type brace shows
that use of X-type of bracing is found more suitable to enhance the performance of the irregular buildings.
Key Words: pushover analysis, vertical irregularity, steel bracings, performance point.
Design and analysis for supporting system of circular ESR for different seism...IRJET Journal
This document analyzes and compares the design of supporting systems for circular elevated water tanks of the same 300m3 capacity located in different seismic zones (II, III, and IV) in India. The study models the tank and conducting response spectrum analysis to calculate seismic forces - shear force, axial force, and bending moment - induced on peripheral and interior columns under full and empty tank conditions. Results show seismic forces generally increase with higher seismic zone and are greater for interior columns compared to peripheral columns. For Zone IV, interior columns fail the bending moment check, indicating larger column sizes are needed. In conclusion, seismic forces on a tank's supporting structure vary significantly based on the seismic zone and column location.
IRJET- A Review on Behaviour of Columns of Steel Framed Structure with Va...IRJET Journal
This document reviews the behavior of columns in steel framed structures using various steel sections. It summarizes several previous studies that analyzed the behavior and performance of columns with conventional and tubular steel sections. The studies concluded that tubular sections provide more efficient and economical designs, saving up to 50% in costs compared to conventional sections. Tubular sections are well-suited for columns with larger unsupported lengths and can provide overall cost savings for structural designs. However, more research is needed to directly compare the behavior of columns constructed with conventional versus tubular steel sections.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IRJET- Study of Behavior Parameters of the Building with Variations in Story ...IRJET Journal
This document discusses a study that analyzes the behavior of buildings with variations in story height and number of bays using different structural frame configurations. Ordinary moment resisting frames (OMRF) and special moment resisting frames (SMRF) are considered. Buildings are modeled and pushover analysis is performed using SAP2000 software. Behavior parameters are calculated from pushover curves and compared to investigate the performance of OMRF and SMRF structures. The objective is to determine the appropriate type of frame to use for seismic loads in different scenarios.
Study of variations in dynamic stability of tall structure corresponding to s...ijceronline
Construction of tall buildings, both residential and commercial are in insistance. In case of tall structure high lateral forces develops due to earthquake load and wind load are crucial. Thus the effects of lateral loads needs consideration for strength and stability of the structures. In tall buildings, lateral loads are critical as it increases drastically after a certain height of the structure. Shear wall systems are one of the most commonly used dynamic load resisting systems in high-rise buildings which help in achieving strength and stability along with economy. In this study, an attempt has been carried out to check the dynamic stability of a tall residential structure by applying variations symmetric arrangement of the shear wall. The Case study of a 26 storied RCC structure situated in Pune region of Maharashtra, India has been carried out. The effect of location of shear wall on dynamic behaviour of building is analysed using ETABS software using response spectrum method for earthquake analysis and IS875 (III) for wind analysis. The proposed position of shear wall gives the effective results as compare to other position.
Comparison of bracings and shear walls as seismic strengthening methods to bu...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
This document reviews the behavior of special moment resisting frames (SMRFs) and intermediate moment resisting frames (IMRFs) during earthquakes. SMRFs are designed to withstand significant inelastic deformations in high seismic regions, while IMRFs are intended for moderate deformations in low to mid seismic areas. SMRFs have stricter design requirements than IMRFs. Analysis showed that SMRFs have greater collapse capacity and longer progressive collapse duration than IMRFs, reducing risk of structural sidesway collapse by 33.4% compared to IMRFs. The use of SMRFs also increases required column longitudinal reinforcement by 40% over IMRFs.
Behavior of plan irregularites using composite members by varying column spac...eSAT Journals
Abstract
Several studies proofs that the weaker columns has low seismic resistance, for this it is need to make the column stronger. The stronger columns can be obtained by many ways, here in this paper steel-concrete composite columns are considered. Use of composite columns in construction reduces the cross-section of the columns throughout the building and also increases the lateral-load resisting capacity to columns. The models consists of G+10, G+15, G+20 stories of Rectangular, L, T and plus shaped structures in which column spacing are varied as 3m, 4m, 5m and 6m along both directions in all structures. For all models the composite-column of size 450x450mm (ISMB 250) is kept constant, only the beam size has been varied accordingly while modeling a structure. The Response Spectrum analysis is done for all the buildings using ETABS version 15. Study is based on the performance of a multi-story building with plan irregularity under major earthquake forces by considering parameters like displacement, storey shear and drifts. Even though the cross section of the column considered is very small for tall buildings, the structure behaves stiff for severe seismic zone-V and also for different conditions; this is done by introducing steel-concrete composite column in a given building. Hence it is concluded that the use of composite columns in construction resists the lateral forces for many vulnerable conditions.
Keywords: Composite Column, Irregular Structure, Seismic Zone, Varying Height, Column Spacing.
Design and economical of roof trusses & purlins (comparison of limit state an...eSAT Publishing House
This document compares the limit state method and working stress method for designing roof trusses and purlins using light gauge steel sections. It analyzes fink type roof trusses and channel section purlins using both methods while keeping other parameters constant. The limit state method results in higher bending strength, load capacity, and less deflection and buckling compared to the working stress method. However, the working stress method proves to be more economical. The study aims to determine the most economical and structurally sound design method.
IRJET - Analysis of Flat Slab Structural System in Different Earthquake Zones...IRJET Journal
1) The document analyzes the seismic performance of flat slab structural systems in different earthquake zones of India.
2) It models a 5-story flat slab building in the earthquake zones II-V and analyzes required steel in columns, nodal displacements, and plate stresses.
3) The results show that steel requirements and displacements remain nearly constant from zones II-IV but sharply increase in zone V, indicating flat slabs perform poorly in high seismic zones.
The Study on Behaviour of Outriggers for Tall Buildings Subjected to Lateral ...IRJET Journal
1) The document discusses the use of outriggers in tall buildings to reduce structural damage from lateral loads like wind and seismic loads.
2) Outriggers connect the central core wall to exterior columns, increasing the building's stiffness and resistance to overturning moments from lateral loads.
3) Studies show that using multiple outriggers and optimizing their placement can significantly reduce building deflection, drift, and core wall bending moments compared to buildings without outriggers. Virtual outrigger systems using belt trusses can also provide benefits while avoiding issues of conventional outrigger designs.
IRJET- Seismic Analysis of Steel Frame Building using Bracing in ETAB SoftwareIRJET Journal
This paper compares the seismic analysis of a G+11 square building and L-shaped building using time history analysis in ETAB 17.01 software. Different types of bracing systems are used, including X, V, inverted V, and diagonal bracing. The response of the buildings is compared in terms of displacement, base shear, and pseudo acceleration to determine which type of building and bracing system provides the minimum response. The L-shaped building with X bracing is found to have the minimum displacement, while the square building with X bracing has the minimum base shear and pseudo acceleration.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This study experimentally investigates the effect of hybridizing jute and glass fibers on the mechanical properties of polyester composites. Jute fiber reinforced polyester composites (JFRPC), glass fiber reinforced polyester composites (GFRPC), and various hybrid fiber reinforced polyester composites (HFRPC) were fabricated and tested. Tensile and flexural testing showed that HFRPC exhibited higher strength properties than JFRPC or GFRPC alone, due to the combined properties of both natural jute and synthetic glass fibers. In particular, composites with 2% jute fiber and varying amounts of glass fiber achieved comparable strengths to GFRPC at a lower cost. Therefore, hybridizing jute and glass
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document summarizes a study analyzing the seismic behavior of dual systems in a G+14 reinforced concrete building using different shear wall arrangements. Five models were analyzed: a bare frame; SMRF and shear walls at corners; SMRF and shear walls at the perimeter; flat slab and shear walls at corners; and flat slab and shear walls at the perimeter. Nonlinear static pushover analysis found that a flat slab and shear walls at corners configuration had the highest base shear and story shears. Story drift was lowest with a flat slab and shear wall combination. The bare frame model performed worst in seismic zone V due to lack of a lateral load resisting system. Overall, the dual systems considered provided life safety performance under seismic loads
Dynamic Response of Rcc and Composite Structure with Brb Frame Subjected To S...IJERA Editor
Concrete structures impart more seismic weight and less deflection whereas Steel structures instruct more
deflections and ductility to the structure, which is beneficial in resisting earthquake forces. Composite
Construction combines the better properties of both steel and concrete. Buckling restrained braced frames
(BRBFs) are primarily used as seismic-force resisting systems for buildings in seismically-active regions.The
objective of the present work is to compare a twenty storied RCC and composite framed structure with BRB
frame subjected to Seismic and different Temperatureloadings using Non-Linear Time History Analysis. Three
dimensional modeling and analysis of the structure is carried out with the help of SAP-2000 v16 software. It is
observed that the storey displacements were decreased by 36% for twenty storey RCC building and for
composite buildings it was decreased by 45% for twenty storeys suggesting the effectiveness of Buckling
restrained brace frame. The overall results suggested that BRB were excellent seismic control device for
composite building as the roof displacement is reduced by 40% but whereas for RCC it is reduced only by 25%.
For Seismic prone areas composite building with BRB frame is more effective. Under Temperature loading
RCC building is more effective than composite structure.
Effect of Prestressing Force, Cable Profile and Eccentricity on Post Tensione...IRJET Journal
This document presents a finite element analysis of post-tensioned concrete beams using ANSYS software. It investigates the effect of prestressing force, cable profile, and eccentricity on the beam's response. Various cable profiles including straight, trapezoidal, parabolic, and sloping tendons were modeled at different eccentricities. The results from ANSYS were validated by comparing to analytical calculations. It was found that the cable profile, prestressing force, and eccentricity all influence the beam's deflections and stresses, and should be considered in design. The 3D finite element model in ANSYS was determined to be suitable for analyzing the effects of different design features on post-tensioned concrete beams.
IRJET- Study of Literature on Seismic Response of RC Irregular StructureIRJET Journal
The document discusses vertical irregularities in reinforced concrete (RC) buildings and their effects on seismic response. It first defines vertical irregularities as weaknesses caused by discontinuities in mass, stiffness, or geometry between storeys. Soft stories, where the stiffness suddenly decreases, are one type of vertical irregularity. The document then reviews several previous studies on modeling and analyzing vertically irregular buildings using pushover analysis, which incrementally loads a structure to determine its failure mechanisms. The studies found that soft story buildings absorb energy through overturning and shear deformation. Irregular buildings may have similar seismic performance to regular buildings if properly designed. Quantifying the degree of irregularity can help evaluate seismic vulnerability and retrofitting needs.
Comparative Study on Masonry Infill, Friction Dampers and Bare Frame Structur...IRJET Journal
The document compares the seismic response of a 10-story building modeled with three different configurations: a bare frame, a frame with masonry infill walls modeled as equivalent diagonal struts, and a frame with friction dampers. Non-linear time history analysis was performed using the EL Centro earthquake record. The addition of masonry infills increased the lateral stiffness and decreased displacements and column moments but also increased base shear and accelerations. The use of friction dampers effectively dissipated energy and reduced the structural response compared to the bare frame, without increasing other demands. Analysis results for story acceleration, displacement, column moment, and base shear are presented for each model.
Analysis and Optimum Design for Steel Moment Resisting Frames to Seismic Exci...IJCMESJOURNAL
The essential purpose of this wander is to develop an Interior Penalty Function (IPF) based estimation to multi-storey steel traces for slightest weight of frames. The frames are proposed for contradicting even impact in view of seismic stacking close by gravity forces. Various structural stems are used for restricting seismic (lateral) forces; however steel moment resisting frames (MRFs) are considered for the present work. The framework solidifies codal courses of action of IS 800-2007, as needs be gets the edges with perfect weight for in-plane moments with lateral support of beam element. Strength and buckling criteria are considered as direct goals close by side constraints in formulating optimization problem. A Software program is made that uses an interior penalty function (IPF) for weight minimization of two-dimensional moment restricting steel encompassed structures. The program uses MATLAB, performs one dimensional interest, and structural design in an iterative technique. The design cases have exhibited that the proposed estimation gives a beneficial instrument to the practicing fundamental algorithm. The program is associated with 6 and 9 storey (4 bays) moment resisting frames (MRFs). The program showed its capacity of optimizing the largeness of two medium size frames. To get part obliges in frames an examination technique must be associated. In the present work Equivalent Lateral Force framework (ELF) and material nonlinear time history analysis (NTH) are associated and perfect qualities gained from both the examinations are contemplated.
Seismic Capacity Comparisons of Reinforced Concrete Buildings Between Standar...drboon
Earthquakes are cause of serious damage through the building. Therefore, moment resistant frame buildings are widely used as lateral resisting system. Generally three types of moment resisting frames are designed namely Special ductile frames (SDF), Intermediate ductile frames (IDF) and Gravity load designed (GLD) frames, each of which has a certain level of ductility. Comparative studies on the seismic performance of three different ductility of building are performed in this study. The analytical models are considered about failure mode of column (i.e. shear failure, flexural to shear failure and flexural failure); beam-column joint connection, infill wall and flexural foundation. Concepts of incremental dynamic analysis are practiced to assess the required data for performance based evaluations. This study found that the lateral load capacity of GLD, IDF, and SDF building was 19.25, 27.87, and 25.92 %W respectively. The average response spectrum at the collapse state for GLD, IDF, and SDF are 0.75 g, 1.19 g, and 1.33 g, respectively. The results show that SDF is more ductile than IDF and the initial strength of SDF is close to IDF. The results indicate that all of frames are able to resistant a design earthquake.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
1) An experimental study was conducted to compare the compression behavior of normal strength concrete (NSC) and self-compacting concrete (SCC) intermediate columns.
2) Six column specimens with a cross-section of 125x125mm and a height of 1.5m were tested under axial loading. The columns varied in concrete type (NSC and SCC) and longitudinal reinforcement ratio (2.09%, 2.89%, 5.15%).
3) The results showed that as the reinforcement ratio increased, the ultimate load capacity increased and axial deformation decreased for both NSC and SCC columns. However, SCC columns exhibited higher ultimate loads and deformations than NSC columns for the same reinforcement ratio.
EXPERIMENTAL INVESTIGATIONS ON COMPRESSION BEHAVIOR PARAMETERS OF NSC AND SC...IAEME Publication
A total of six intermediate columns with same cross sectional area of 125mm X 125mm were cast and tested. Experimental study was conducted to know the behavior of intermediate columns under axial load made out of Normal strength concrete (NSC) and Self-compacting concrete (SCC). Main objective of this study was to compare the behavior of NSC intermediate columns and SCC intermediate columns for various percentage of steel. Axial load ratio, stiffness ratio were the main parameters which increased as the axial load increased. However in this study, special attention was given on stiffness degradation, energy absorption, ultimate load carrying capacity, shortening index of each intermediate column. The results showed that shortening index, axial load ratio, stiffness ratio and stiffness degradation increased with increase in axial load.
Seismic Performance of RCC Irregular Building with Shape and StiffnessIRJET Journal
This document discusses analyzing the seismic performance of irregular reinforced concrete (RC) buildings. Three RC building frames are modeled - one with vertical irregularity on one side, one with irregularity at the center, and one with irregularity at the corner. The frames are analyzed using ETABS software under different earthquake load combinations. Results show the frame with irregularity at the center experiences less variation in time period and displacements compared to the other frames, indicating it performs better seismically. The goal is to better understand how to improve seismic resistance of irregular buildings.
This document summarizes a thesis analyzing the seismic performance of a 13-story building model with and without shear walls. Two models are considered: a bare frame structure and a shear wall frame structure. Both models are analyzed using ETABS software under wind and earthquake loading conditions in Seismic Zone III. The results show that the shear wall structure performs much better in terms of limiting lateral displacement, storey drift, and increasing stiffness and strength. It is concluded that the shear wall frame structure provides more reliable performance against lateral loads.
A Study of R. C. C. Beam Column Junction Subjected To QuasiStatic (Monotonic)...IOSR Journals
This document summarizes a study on reinforced concrete beam-column junctions subjected to quasi-static (monotonic) loading. The study analyzes parameters like stress, displacement, and joint stiffness. Previous research on corner and exterior beam-column joints under cyclic loading is reviewed. The behavior of exterior joints differs from corner joints. Finite element analysis is used to model the joints, and results are compared to experimental data. Design and performance criteria for beam-column joints in seismic regions are discussed. Joint shear strength and bond strength are important factors addressed in the design process.
IRJET- Study of Response of Wall Type Pier for Varying Width of Superstru...IRJET Journal
This document presents a study on the seismic response of wall-type bridge piers with varying superstructure widths. Finite element models of piers were developed in MIDAS Civil for superstructure widths of 8m, 10m, 12.5m, and 16m. Response spectrum analysis was conducted according to Indian codes to obtain bending stresses, natural periods, and modal mass participation. Results showed natural periods decreased for the first two modes as width increased. Stresses also decreased with increasing width. Modal mass participation saw little change with varying width. In conclusion, wider superstructures led to improved seismic performance of wall-type piers.
Seismic Response Analysis of Structure A Perspective Viewijtsrd
This document summarizes research on seismic response analysis of structures with mass irregularities at different floor levels. It discusses techniques for seismic analysis, focusing on time history analysis to evaluate nonlinear structural response under representative earthquake loads. The document reviews studies on analyzing reinforced concrete (RC) buildings with mass irregularities at different floors using time history analysis in ETABS software. It also provides background on irregular structure types according to building codes and discusses objectives of accurately modeling flexible diaphragms while maintaining seismic behavior of framed buildings.
IRJET- Non-Linear Time History Analysis of the Horizontal and Vertical Asymme...IRJET Journal
This document discusses non-linear time history analysis of asymmetric buildings with horizontal and vertical irregularities. It summarizes that vertically geometrically irregular buildings experience the highest base torsion under seismic loading, while torsionally irregular buildings experience the highest among horizontally irregular structures. The analysis is performed using ETABS software on various irregularity models of 5-story buildings subjected to ground motion records.
NON LINEAR ANALYSIS OF ASYMMETRIC BUILDINGTejas Doshi
This document discusses non-linear time history analysis of asymmetric buildings with horizontal and vertical irregularities. It summarizes that vertically geometrically irregular buildings experience the highest base torsion under seismic loading, while torsionally irregular buildings experience the highest among horizontally irregular structures. The analysis is performed using ETABS software on various irregularity models of 5-story buildings subjected to ground motion records.
Seismic Response of Vertically Irregular Structure with Composite ColumnsIRJET Journal
This document discusses the seismic response of vertically irregular structures with composite columns compared to regular structures. Three models of buildings with different vertical irregularities are modeled and analyzed using ETABS software. The models include the same building with and without composite columns. Results show that structures with composite columns have higher displacements but lower base shear and story drift compared to corresponding irregular structures without composite columns. This indicates that use of composite columns can improve seismic performance by increasing flexibility and reducing failure of irregular structures during earthquakes.
A study of r.c.c. beam column connection subjected to monotonic loadingeSAT Journals
Abstract
Beam and column where intersects is called as joint or Connection. The different types of joints are classified as corner joint, exterior
joint, interior joint etc. on beam column joint applying quasi-static loading .i. e. monotonic loading on cantilever end of the beam and
study of various parameters as to be find out on corner and exterior beam column joint i.e. maximum stress, minimum stress,
displacement and variation in stiffness of beam column joint can be analyzed in Ansys software ( Non-Linear FEM Software) The
various research studies focused on corner and exterior beam column joints and their behavior, support conditions of beam-column
joints. Some recent experimental studies, however, addressed beam-column joints of substandard RC frames with weak columns, poor
anchorage of longitudinal beam bars and insufficient transverse reinforcement. the behavior of exterior beam column joint is different
than the corner beam column joint.
Keywords: beam, column, corner, exterior, joint, monotonic load, quasi-static, varying stiffness
AppSec PNW: Android and iOS Application Security with MobSFAjin Abraham
Mobile Security Framework - MobSF is a free and open source automated mobile application security testing environment designed to help security engineers, researchers, developers, and penetration testers to identify security vulnerabilities, malicious behaviours and privacy concerns in mobile applications using static and dynamic analysis. It supports all the popular mobile application binaries and source code formats built for Android and iOS devices. In addition to automated security assessment, it also offers an interactive testing environment to build and execute scenario based test/fuzz cases against the application.
This talk covers:
Using MobSF for static analysis of mobile applications.
Interactive dynamic security assessment of Android and iOS applications.
Solving Mobile app CTF challenges.
Reverse engineering and runtime analysis of Mobile malware.
How to shift left and integrate MobSF/mobsfscan SAST and DAST in your build pipeline.
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...Alex Pruden
Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security.
Paper Link: https://eprint.iacr.org/2024/257
Digital Banking in the Cloud: How Citizens Bank Unlocked Their MainframePrecisely
Inconsistent user experience and siloed data, high costs, and changing customer expectations – Citizens Bank was experiencing these challenges while it was attempting to deliver a superior digital banking experience for its clients. Its core banking applications run on the mainframe and Citizens was using legacy utilities to get the critical mainframe data to feed customer-facing channels, like call centers, web, and mobile. Ultimately, this led to higher operating costs (MIPS), delayed response times, and longer time to market.
Ever-changing customer expectations demand more modern digital experiences, and the bank needed to find a solution that could provide real-time data to its customer channels with low latency and operating costs. Join this session to learn how Citizens is leveraging Precisely to replicate mainframe data to its customer channels and deliver on their “modern digital bank” experiences.
"Choosing proper type of scaling", Olena SyrotaFwdays
Imagine an IoT processing system that is already quite mature and production-ready and for which client coverage is growing and scaling and performance aspects are life and death questions. The system has Redis, MongoDB, and stream processing based on ksqldb. In this talk, firstly, we will analyze scaling approaches and then select the proper ones for our system.
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-EfficiencyScyllaDB
Freshworks creates AI-boosted business software that helps employees work more efficiently and effectively. Managing data across multiple RDBMS and NoSQL databases was already a challenge at their current scale. To prepare for 10X growth, they knew it was time to rethink their database strategy. Learn how they architected a solution that would simplify scaling while keeping costs under control.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
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Bp33409412
1. A.K.Chikyal, Karim Pathan, Ansari Altaf ul Hassan, Mohammed Nabeel / International
Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.409-412
409 | P a g e
Seismic Response of Buildings with Column Reinforcement
Lapped Just Above Floor Level
A.K.Chikyal1
, Karim Pathan2
, Ansari Altaf ul Hassan3
, Mohammed
Nabeel4
1.Department of Civil Engineering, SYCET , Aurangabad-05, (M/S) India,
2.Consulting Structural Engineer, Aurangabad -05, (M/S) India,
3. Student, SYCET , Aurangabad-05, (M/S) India,
4. Student, SYCET , Aurangabad-05, (M/S) India,
ABSTRACT
The response of beam-column joints
have long been recognized as a significant factor
that affects the overall behavior of reinforced
concrete (RC) framed structures subjected to
large lateral loads. The reversal of forces in
beam-column joints during earthquakes may
cause distress and often failure, when not
designed and detailed properly. The principle
objective of this work is to analyze several
“G+10” storey buildings having reinforcement
joint (lap) just above the floors. An attempt is
made to study the behavior of such structures
with the conventional modeling. As a common
practice, the structures are constructed by
lapping the 100% of the reinforcement just above
the floor instead of lapping it at mid height. It is
assumed that column joints near the base where
100% lapping is being done, behaves as a hinge
which will transfer only vertical/horizontal loads
without moments. The response of such structure
is compared with those where the detailing is
done properly by maintaining the reinforcement
joint at mid height and not more than 50%
lapping is done.
Key words: column joints, joints in RCC
structures.
I. INTRODUCTION
Column joints in a reinforced concrete
moment resisting frame are critical parts for transfer
of loads effectively between the connecting
elements (i.e. beams and columns) in the structure.
In the analysis of reinforced concrete moment
resisting frames the joints are generally assumed as
rigid. In countries like India, the joint design is
usually given lesser attention being restricted to
provision of sufficient anchorage for beam
longitudinal reinforcement. This may be acceptable
when the frame is not subjected to earthquake loads.
There have been many catastrophic failures reported
in the past earthquakes, in particular with Turkey
and Taiwan earthquakes occurred in 1999, and in
bhuj Gujrat earthquake which have been attributed
to column joints. Unsafe design and detailing within
the joint region make unsafe and unwarned the
entire structure, even if other structural members
confirm to the design requirements. The paper is
aimed by comparing the forces occurred in buildings
with poor column joints with hinges (as detailed and
constructed without seismic considerations) and
with detailed as per recommendations that making
designers aware of the theoretical background on the
design of column joints highlighting important
parameters affecting seismic behavior of joints.
II. PERFORMANCE ANALYSIS:
ANALYSIS OF G+10 BUILDING MODELS
Several models of (G+10) buildings with
storey height 3.15m, 3.6m and 4.2m are analysed.
Each of these floor height are modeled for different
bays in each direction ( like 4 x 4 bays , 4x5 bays
and 5 x 5 bays ) with different bay widths. The
behavior of Exterior, edge and interior (C1, C2, and
C3) are studied and the response is compared. The
behavior of peripheral, outer bay and inner bay
beams (B1, B2 and B3) is also studied. An
unsymmetrical building is chosen for case study for
the purpose of authentication of the symmetrical
models studied above.
The responses of all above models are
studied by applying the Earthquake force equivalent
to 0.3g acceleration.
III. COMPARISION AND CONCLUSIONS
All total nine models are studied along with
the case study of unsymmetrical building. Every
Model is prepared as a conventional and as modified
hinge joint at base due to critical location of lap. The
response is compared in terms of Axial Force,
Bending Moment and Shear force in columns as
well Bending Moment and shear force in the beams.
2. A.K.Chikyal, Karim Pathan, Ansari Altaf ul Hassan, Mohammed Nabeel / International
Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.409-412
410 | P a g e
Table 1: Comparison of Axial Force in Columns (Model 1, Floor height 3.15m, 4 x 4 bays)
GROUP
A.F. (Modified Model)
kN
AF (Conventional Model)
kN
%
Difference
C1 2.4E3 2.46E3 2.43
C2 3.69E3 3.7E3 0.27
C3 4.88E3 4.83E3 1.02
The trend of axial force is same and not significant in all bays like 4x4, 4x5 and 5x5 hence not shown. The other
response is graphically presented here after.
Table 2: Comparison of Shear Force in Columns (Model 1, Floor height 3.15m, 4 x 4 bays)
GROUP
S.F. (Modified Model)
kN
S.F (Conventional Model)
kN
%
Difference
C1 56.620 45.869 18.98
C2 53.036 53.842 1.51
C3 53.925 55.200 2.36
The response for other models is graphically presented here after
Table 3: Comparison of Bending “My” in Columns ( Model 1, Floor height 3.15m , 4 x 4 bays )
GROUP
My (Modified Model)
kNm
My (Conventional Model)
kNm
%
Difference
C1 133.927 71.396 46.69
C2 152.069 81.879 46.15
C3 153.097 83.070 45.74
The response for other models is graphically presented here after
Table 4: Comparison of Bending “Mz” in Columns (Model 1, Floor height 3.15m, 4 x 4 bays)
GROUP
Mz (Modified Model)
kNm
Mz (Conventional Model)
kNm
% Difference
C1 134.761 127.491 5.70
C2 167.062 129.634 22.4
C3 169.864 131.940 22.32
The response for other models is graphically presented here after
3. A.K.Chikyal, Karim Pathan, Ansari Altaf ul Hassan, Mohammed Nabeel / International
Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.409-412
411 | P a g e
Chart 1: Variation in A.F., S.F., and Bending moments for column group “C1”
Chart 2: Variation in A.F., S.F., and Bending moments for column group “C2”
Chart 3: Variation in A.F., S.F., and Bending moments for column group “C3”
IV. CONCLUSION:
The output of the study is really an
attraction to the structural engineer. Though, there
is no significant change in Axial force in columns
(as it should be), the variation in Shear force and
Bending Moment is of very much concern. The
variation in shear force upto the extent of 40%
where as the variation in My moment is having
maximum value of 65% which really cannot be a
tolerable. Hence, it is recommended to analyse the
RCC framed structure by considering the hinges at
the base of columns at every floor for the purpose
of safety at least if someone can’t rigorously go for
the joint design.
4. A.K.Chikyal, Karim Pathan, Ansari Altaf ul Hassan, Mohammed Nabeel / International
Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.409-412
412 | P a g e
REFRENCES:
1. P. Rajaram, A. Murugesan and G.S.
Thirugnanam, “Experimental Study of
Interier RC Beam Column Joints
Subjected to Cyclic Loading,”
International Journal of Applied
Engineering and Research, Dindigul, Vol
1, 2010, 49-58.
2. K. Ravichandran, C. Antony Jayasehar
“Seismic Retrofitting of Exterior Beam
Column Joints using ferrocement”,
International Journal of Engineering and
Applied Sciences, Vol.4, Issue 2 ( 2012),
35-58.
3. Ravi, S Robert, Arulraj and G Prinec,
“Experimental Investigation on Behavior
of RCC Beam Column Joints Retrofitted
with GFRP-CFRP Hybrid wrapping
subjected to load Reversal”, International
journal of Mechanics and Solids, Vol.5,
Issue 1, 2010.
4. Gustavo J Parra-montecinos, Sean W.
Peterfreund and Shih-ho Chao, “Highly
Damage Tolerant Beam Column Joints
through use of high performance fiber
reinforced cement composites”, ACI
Structural journal, Vol. 102, No. 3,
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5. N.Vijayalakshmi, M.Kalaivani,
A.Murugesan and G.S.Thirugnanam,
“Experimental Investigation of RCBeam
Column Joint Strengthening by FPP
Wrapping”, International Journal of Civil
and Structural, Vol.1, No.1, 2010, 35-49.
6. Bindhu K.R, Sreekumar K.J “Seismic
Resistance of Exterior Beam Column Joint
with Diagonal Collar Stirrups” submitted
to International Journal of Civil and
Structural Engineering”, Volume 2, No 1,
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