This document discusses the seismic behavior of multi-storey buildings with vertical irregularities that have floating columns. It analyzes four 15-storey building models located in seismic zones III, IV, and V: 1) a building with floating columns without shear walls, 2) a building with floating columns and shear walls, 3) a building with floating columns and vertical irregularities without shear walls, and 4) a building with floating columns, vertical irregularities, and shear walls. The response parameters of lateral displacement and storey drift are compared between the models, with and without shear walls. The results show that providing shear walls reduces displacement and drift, and buildings with vertical irregularities generally perform better than those without. Drift and
Significance of shear wall in flat slab multi storied building - A ReviewIRJET Journal
This document summarizes research on the significance of shear walls in flat slab multi-story buildings. It begins with an abstract discussing the increased use of flat slab construction in tall buildings and how shear walls provide stability against lateral loads like wind and earthquakes. The document then reviews the theoretical background of flat slab construction and shear walls as bracing methods. It also summarizes several previous studies examining the effects of openings in shear walls, use of flat slabs in seismic zones, and different shear wall configurations. The literature review found that shear walls can effectively resist lateral loads and reduce displacement, with exterior corner placements performing best.
Seismic Analysis of Plan Irregular Multi-Storied Building with and without S...IRJET Journal
This document analyzes the seismic performance of irregular multi-story buildings with and without shear walls. Six building models are considered: I-shaped, L-shaped, and C-shaped buildings with and without shear walls. The buildings are 10 stories tall and located in a high seismic zone. Finite element software is used to model and analyze the buildings using the equivalent lateral force method. Results for story displacement, drift, and base shear are presented and compared. In general, the analysis found that buildings with shear walls experienced reduced story displacements of 50-70% and increased base shear compared to bare frame buildings without shear walls. The addition of shear walls improved the seismic performance of irregularly shaped buildings.
Seismic Response of RC Framed Structures Having Plan and Vertical Irregularit...IRJET Journal
This document summarizes a research study on the seismic response of reinforced concrete (RC) framed structures with plan and vertical irregularities, with and without masonry infill walls. The study used finite element software to model and analyze a 9-story RC building in a high seismic zone considering different structural configurations. Results from equivalent static, response spectrum, and pushover analyses were compared in terms of base shear, lateral displacement, story drift, and performance point. It was found that lateral displacement and story drift were higher for bare frames compared to infilled frames, while base shear was lower for bare frames. Irregular buildings also experienced higher displacement and drift than regular buildings. The goal of the study was to better understand how different structural
IRJET- Seismic Analysis of Multistory Building with Floating Column : A R...IRJET Journal
This document summarizes research on analyzing the seismic performance of multistory buildings with floating columns. It first defines floating columns as vertical members supported by beams instead of extending to the foundation. The document then reviews past studies that found buildings with floating columns are unsafe in seismic zones due to non-uniform mass, stiffness and strength distributions. It proceeds to discuss analyzing multistory buildings with floating columns located at different heights and positions using software, and observing story drifts, displacements and shear forces. The review aims to improve understanding of seismic behavior in irregular buildings like those with floating columns.
IRJET- Effect of Lateral Load on Moment Resisting Frame and Shear Wall in Mul...IRJET Journal
This document summarizes and compares the results of analyzing a 15-story building model with and without shear walls, using ETABS software. Key findings include:
1. The model with shear walls had lower maximum displacements and story drifts under both earthquake and wind loading compared to the model without shear walls.
2. Analysis of torsional irregularity found the model without shear walls to be regularly shaped, while the model with shear walls was found to have extreme torsional irregularity in the upper stories under earthquake loading in the Y-direction.
3. In conclusion, the addition of shear walls improved the building's performance under lateral loads by reducing displacements and drift, though it introduced torsion
IRJET- Behavior and Comparison of Multistory Building of Shear Wall with and ...IRJET Journal
This document analyzes and compares the behavior of multistory buildings with shear walls and struts subjected to lateral loads. It finds that including shear walls and struts reduces displacement, drift, shear and increases stiffness compared to a normal reinforced concrete building. Shear walls alone reduce displacement and drift to a greater extent than a bare frame, and including additional struts leads to further reductions. The study concludes that a building with both shear walls and struts performs best in resisting seismic forces from lateral loads.
IRJET - A Review of Seismic Analysis of Circular Shape RC Building by using S...IRJET Journal
This document reviews seismic analysis of circular reinforced concrete (RC) buildings with shear walls in different positions. It discusses two types of circular buildings - with and without interior courtyards. Several past studies analyzing RC buildings with shear walls in different positions using software like ETABS, SAP2000, and STAAD-Pro are summarized. The studies conclude that zigzag and diagonal shear wall configurations provide better seismic performance than other configurations. Placing shear walls in the building center is ideal but often impractical, so ends are commonly used. Circular buildings experience less wind effects than other shapes.
IRJET- Post Peak Response of Reinforced Concrete Frames with and without in F...IRJET Journal
This document discusses the effect of masonry infill panels, cross bracing, and viscous dampers on the seismic response of reinforced concrete frames. It analyzes a 7-story reinforced concrete building model with and without these elements using nonlinear static analysis. The addition of masonry infill walls, cross bracing, and viscous dampers reduces storey displacements and drift compared to the bare frame model. The equivalent strut method is used to model the infill walls, and cross bracing is modeled using diagonal steel braces. Viscous dampers absorb seismic energy to damp the motion of the building. Nonlinear static pushover analysis is performed using ETABS and SAP2000 software.
Significance of shear wall in flat slab multi storied building - A ReviewIRJET Journal
This document summarizes research on the significance of shear walls in flat slab multi-story buildings. It begins with an abstract discussing the increased use of flat slab construction in tall buildings and how shear walls provide stability against lateral loads like wind and earthquakes. The document then reviews the theoretical background of flat slab construction and shear walls as bracing methods. It also summarizes several previous studies examining the effects of openings in shear walls, use of flat slabs in seismic zones, and different shear wall configurations. The literature review found that shear walls can effectively resist lateral loads and reduce displacement, with exterior corner placements performing best.
Seismic Analysis of Plan Irregular Multi-Storied Building with and without S...IRJET Journal
This document analyzes the seismic performance of irregular multi-story buildings with and without shear walls. Six building models are considered: I-shaped, L-shaped, and C-shaped buildings with and without shear walls. The buildings are 10 stories tall and located in a high seismic zone. Finite element software is used to model and analyze the buildings using the equivalent lateral force method. Results for story displacement, drift, and base shear are presented and compared. In general, the analysis found that buildings with shear walls experienced reduced story displacements of 50-70% and increased base shear compared to bare frame buildings without shear walls. The addition of shear walls improved the seismic performance of irregularly shaped buildings.
Seismic Response of RC Framed Structures Having Plan and Vertical Irregularit...IRJET Journal
This document summarizes a research study on the seismic response of reinforced concrete (RC) framed structures with plan and vertical irregularities, with and without masonry infill walls. The study used finite element software to model and analyze a 9-story RC building in a high seismic zone considering different structural configurations. Results from equivalent static, response spectrum, and pushover analyses were compared in terms of base shear, lateral displacement, story drift, and performance point. It was found that lateral displacement and story drift were higher for bare frames compared to infilled frames, while base shear was lower for bare frames. Irregular buildings also experienced higher displacement and drift than regular buildings. The goal of the study was to better understand how different structural
IRJET- Seismic Analysis of Multistory Building with Floating Column : A R...IRJET Journal
This document summarizes research on analyzing the seismic performance of multistory buildings with floating columns. It first defines floating columns as vertical members supported by beams instead of extending to the foundation. The document then reviews past studies that found buildings with floating columns are unsafe in seismic zones due to non-uniform mass, stiffness and strength distributions. It proceeds to discuss analyzing multistory buildings with floating columns located at different heights and positions using software, and observing story drifts, displacements and shear forces. The review aims to improve understanding of seismic behavior in irregular buildings like those with floating columns.
IRJET- Effect of Lateral Load on Moment Resisting Frame and Shear Wall in Mul...IRJET Journal
This document summarizes and compares the results of analyzing a 15-story building model with and without shear walls, using ETABS software. Key findings include:
1. The model with shear walls had lower maximum displacements and story drifts under both earthquake and wind loading compared to the model without shear walls.
2. Analysis of torsional irregularity found the model without shear walls to be regularly shaped, while the model with shear walls was found to have extreme torsional irregularity in the upper stories under earthquake loading in the Y-direction.
3. In conclusion, the addition of shear walls improved the building's performance under lateral loads by reducing displacements and drift, though it introduced torsion
IRJET- Behavior and Comparison of Multistory Building of Shear Wall with and ...IRJET Journal
This document analyzes and compares the behavior of multistory buildings with shear walls and struts subjected to lateral loads. It finds that including shear walls and struts reduces displacement, drift, shear and increases stiffness compared to a normal reinforced concrete building. Shear walls alone reduce displacement and drift to a greater extent than a bare frame, and including additional struts leads to further reductions. The study concludes that a building with both shear walls and struts performs best in resisting seismic forces from lateral loads.
IRJET - A Review of Seismic Analysis of Circular Shape RC Building by using S...IRJET Journal
This document reviews seismic analysis of circular reinforced concrete (RC) buildings with shear walls in different positions. It discusses two types of circular buildings - with and without interior courtyards. Several past studies analyzing RC buildings with shear walls in different positions using software like ETABS, SAP2000, and STAAD-Pro are summarized. The studies conclude that zigzag and diagonal shear wall configurations provide better seismic performance than other configurations. Placing shear walls in the building center is ideal but often impractical, so ends are commonly used. Circular buildings experience less wind effects than other shapes.
IRJET- Post Peak Response of Reinforced Concrete Frames with and without in F...IRJET Journal
This document discusses the effect of masonry infill panels, cross bracing, and viscous dampers on the seismic response of reinforced concrete frames. It analyzes a 7-story reinforced concrete building model with and without these elements using nonlinear static analysis. The addition of masonry infill walls, cross bracing, and viscous dampers reduces storey displacements and drift compared to the bare frame model. The equivalent strut method is used to model the infill walls, and cross bracing is modeled using diagonal steel braces. Viscous dampers absorb seismic energy to damp the motion of the building. Nonlinear static pushover analysis is performed using ETABS and SAP2000 software.
IRJET- Comparative Analysis of Seismic Performance of R.C Building Restin...IRJET Journal
This document presents a comparative analysis of the seismic performance of reinforced concrete buildings resting on plain ground versus sloping ground at various inclinations. Four analytical building models were created and analyzed using finite element software: a building on plain ground, and buildings on ground sloping at 15, 25, and 35 degrees. The models were 7 stories tall with the same structural properties. Dynamic analysis results showed increased modal periods, story drifts, and displacements for buildings on steeper slopes, indicating worse performance. Buildings on 25 and 35 degree slopes in particular experienced sudden stiffness changes and highest displacements. The 35 degree slope building performed worst. In general, seismic performance decreased with increasing slope inclination.
IRJET- Comparative Analysis on Seismic Behaviour of Regular and Verticall...IRJET Journal
The document compares the seismic behavior of regular and vertically irregular reinforced concrete framed buildings with and without shear walls through structural analysis. Eight building models are created - regular and irregular structures both with and without shear walls in different locations. Equivalent static analysis and response spectrum analysis are performed to obtain seismic responses like base shear, storey shear, storey displacement, storey drift, and time period. Results show that structures with shear walls experience less seismic response compared to structures without shear walls. Irregular structures with shear walls also show lower responses than regular structures.
Behavioural studies of floating column on framed structureeSAT Journals
Abstract RCC concrete column means cement concrete reinforced with steel bars, steel plates, steel mesh etc. to increase the tension withstanding capacity of the structure. The term floating column means that the column is floated between two floors. Various types of structures G+3, G+5 and G+10 for RCC column and floating column are analyzed. The difference between G+3, G+5 and G+ 10 structures are shown by graphs and charts. Comparison will be done on bending moment and shear force between these structures. This paper presents the analysis of floating column and RCC column by using STAAD PRO V8i. Keywords: Floating Column, RCC column shear force and bending moment.
The document discusses the philosophy of seismic design of building structures. It explains that seismic design aims to allow some damage to occur in major earthquakes to avoid collapse, by designing structures to yield in specific zones. This dissipates energy through hysteretic damping. Structures are designed to remain elastic in minor quakes and have minimal damage in moderate quakes. Common lateral force resisting systems for reinforced concrete buildings are then described, including moment frames, shear walls, dual frames+walls, braced frames, trussed frames, and tube frames.
Seismic response of multi storey irregular building with floating columneSAT Journals
Abstract
In recent times, multi-storey buildings in urban cities are required to have column free space due to shortage of space, population and also for aesthetic and functional requirements. For this buildings are provided with floating columns at one or more storey. These floating columns are highly disadvantageous in a building built in seismically active areas. The earthquake forces that are developed at different floor levels in a building need to be carried down along the height to the ground by the shortest path. Deviation or discontinuity in this load transfer path results in poor performance of the building. In this paper, the critical position of floating column in vertically irregular buildings has been discussed for G+5 and G+7 RC buildings for zone II and zone V. Also the effect of size of beams and columns carrying the load of floating column has been assessed. The response of building such as storey drift, storey displacement and storey shear has been used to evaluate the results obtained using ETABS software.
Keywords: Floating column, Irregular building, Response spectrum method
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.
IRJET- Seismic Analysis of Buildings with Shear Wall having Horizontal Ir...IRJET Journal
This document analyzes the seismic behavior of five 6-story buildings with horizontal irregularities: E-shaped, I-shaped, L-shaped, +-shaped, and box-shaped. The buildings are modeled in SAP2000 and analyzed using response spectrum analysis according to Indian codes for seismic design. Parameters like lateral displacement, base shear, story drift, and period are compared. Results show the E-shaped building experiences the highest base shear and lateral displacement, while the +-shaped building experiences the lowest. The L-shaped building has the highest displacement in the X-direction, while the +-shaped building remains the lowest. In conclusion, horizontal irregularity affects the seismic response of buildings.
Seismic performance of r c buildings on sloping grounds with different types ...eSAT Journals
Abstract
Structure are highly susceptible to serve damages in earthquake scenario, so choosing an appropriate lateral force resisting
bracing systems will have a significant effect on performance of the structure. So this present study is aimed at evaluating and
comparing various types of eccentric steel bracings for 12 storey RC frame building resisting on sloping ground configurations.
For this 5 types of bracing systems like X-Bracing, Diagonal bracing, K- bracing, V-bracing and inverted V bracing are
considered on the outer periphery of the buildings with step back and set back – step back type configurations are modeled and
analyzed. The models are compared for different aspects within the structure, such as the maximum storey displacement, base
shear, storey drift and storey shear, the structure is analyzed for seismic zone V and medium soil condition as per IS 1893:2002
using ETABS software. Results conclude that on sloping ground due to irregularity on ground surface, the structures are more
vulnerable to earthquakes. Hence use of eccentric steel bracing is an effective and economical way to resist earthquake forces,
Inverted V type bracing performs well compared to other bracing types. By using inverted V type bracing in step back buildings
types maximum storey displacement of 70% and storey drift of 66% are obtained. Similarly for setback – step back configuration
maximum storey displacement of 74% and storey drift of 70% are obtained respectively.
Keywords: X-Bracing, Diagonal Bracing, K- Bracing, V-Bracing and Inverted V Bracing
IRJET- Comparative Analysis of Regular and Irregular Configuration of Mul...IRJET Journal
This document analyzes the response of regular and irregularly configured multistory buildings in medium soil and various seismic zones. A 30-story building is modeled in ETABS software with both regular and irregular configurations. The models are analyzed using response spectrum analysis in seismic zones II and V. Results show that the irregular building experiences higher story displacements, drifts, forces, and accelerations compared to the regular building. The regular building has higher story stiffness and lower base shear. Therefore, irregular configurations perform poorer under earthquake loading with increased damage potential.
IRJET-Effect of Shear Wall on Seismic Performance of RC Open Ground Storey Fr...IRJET Journal
1. The study examines the effect of shear walls on the seismic performance of reinforced concrete open ground storey frame buildings.
2. Linear static and nonlinear static analyses are used to compare the performance of open ground storey buildings with and without shear walls. Various multiplication factors are applied to model strengthened configurations.
3. The results show that shear walls improve the capacity of open ground storey buildings to resist seismic forces but strengthening comes at a higher comparative cost.
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.
ANALYSIS OF SOFT STOREY FOR MULTI STORYED BUILDING IN ZONE-4Ijripublishers Ijri
This document analyzes the soft story effect in multi-story buildings located in seismic zone 4 of India. A soft story is defined as a story with significantly less stiffness than adjacent stories, often due to large open spaces. The document describes a model of a 21-story building analyzed using ETABS software. Results show increased displacement and drift when soft stories are located at lower floors compared to upper floors. Design of structural elements in soft stories must account for increased lateral loads during earthquakes. Providing shear walls can increase story stiffness and improve seismic performance of buildings with soft stories.
PERFORMANCE BASED ANALYSIS OF VERTICALLY IRREGULAR STRUCTURE UNDER VARIOUS SE...Ijripublishers Ijri
In the recent years a lot of attention has been given to the earthquake analysis of structure it is one of the most devastating
natural calamity and which causes severe damage not only to the properties but also to the lives. This is the
reason there has been a lot of focus on the structures to be earthquake resistant. Buildings get damaged mostly due
to the earthquake ground motions. In an earthquake, the building base experiences high frequency movements, which
results in the inertial force on the building and its components and this problem gets worse when a structure is irregular
in shape, size etc,. Therefore, there is a lot to work on the seismic behavior of the irregular building which might not
respond the way regular building does. It makes the irregular building quite more complex and unpredictable during
the course of an earthquake.
This document provides an introduction and overview of the structural design considerations for tall buildings. It discusses how mankind has sought to build taller structures throughout history as symbols of power. For tall buildings, lateral loads from wind and earthquakes must be effectively resisted to prevent shear failure, overturning, or excessive deflection. Various lateral load resisting systems are explored, including moment frames, braced frames, tube structures, and outrigger systems. Rigidity indices are used to compare the bending and shear resistance of different structural configurations. The challenges of seismic design are also addressed. The document reviews previous research on improving the performance of reinforced concrete frames through the addition of bracing or shear walls.
IRJET- Analysis and Design of Regular and Irregular BuildingsIRJET Journal
The document analyzes and compares the structural design of regular and irregular reinforced concrete (RCC) buildings. It finds that irregular buildings experience increased torsion effects due to the center of mass and stiffness not coinciding. For an irregular L-shaped building studied, maximum horizontal displacement and torsion induced were higher compared to the regular building. Column forces and design requirements also differed between the regular and irregular structures due to the additional torsion effects in the irregular building. The study concludes that irregular building designs require relatively higher structural sections to account for increased stresses from torsion.
Design & Analysis of High rise Building With & Without Floating Column Using ...IJSRD
At present buildings with floating column is a typical feature in the modern multistory construction in urban India. There are many projects in which floating columns are adopted, especially above the ground floor, where transfer girders are employed, so that more open space is available in the ground floor. As the load path in the floating columns is not continuous, they are more vulnerable to the seismic activity. Sometimes, to meet the requirements these type of aspects cannot be avoided though these are not found to be of safe. Hence, an attempt is taken to study the behavior of a G+15 multi storey building in which some storey’s are considered for commercial purpose and remaining storey’s are for residential purpose. This paper studies the comparison & seismic analysis of the multistory buildings with floating column and without floating column. Finally, analysis & results in the high rise building such as storey drifts, storey displacement, and Base shear were shown in this study. Design and Analysis was carried out by using Extended Three Dimensional Analysis of Building Systems (ETABS) Software.
This project is to cover the graduation requirements for high Diploma of Higher College Of Technology. The research was on the earthquakes and it effects on the building. After that , designing system that help us to control the effect of earthquakes. This system has structure components that should be under consideration. Also, installing the Tuned Mass Dumper TMD in the structure and superstructure of building. This consisting of mass, spring and viscous dumper. The viscous dumper will absorb the energy of the vibration due to earthquakes. Part of calculations, it’s important to study the Flexibility influence coefficient. It focuses on the behavior in terms of stiffness and flexibility. Another important subject is mass stiffness and matrices. This provides the simplest representation of a building for the purposes of investigating lateral dynamic responses.
Seismic Analysis of Regular and Irregular Buildings with Vertical Irregularit...IRJET Journal
This document analyzes the seismic response of regular and irregular buildings with vertical irregularities using STAAD.Pro software. Six building models are analyzed - three regular buildings with stepped, inverted-T, and U-shaped vertical irregularities, and three irregular (H-shaped plan) buildings with the same vertical irregularities. Response spectrum analysis is used to determine maximum displacements, base shear, frequencies, and time periods. Results show irregular buildings have higher displacements and lower frequencies than regular buildings. The regular building with a U-shaped vertical irregularity performed the worst with the highest displacements. In conclusion, regular buildings performed better seismically than irregular buildings with vertical irregularities.
IRJET- Seismic Analysis of Building Resting on Sloping Ground with Soil S...IRJET Journal
This document analyzes the seismic response of 20-story reinforced concrete buildings resting on sloping ground with and without considering soil-structure interaction. Eight structural models are considered including buildings on flat ground and slopes of 10, 20, and 30 degrees, both with and without flexible foundations representing soft, medium, and hard soil types. Response spectrum analysis is used to compare displacement, drift, base shear, and other response parameters. The results show that considering soil-structure interaction leads to increased displacement, drift, and decreased base shear compared to fixed foundation models. Displacement and drift also tend to increase with softer soil types and greater slope angles.
IRJET- Static and Dynamic Analysis of Multistorey Buildings having Floating C...IRJET Journal
This document analyzes the behavior of multistory buildings with floating columns, which do not extend all the way from the top floor to the foundation. Three building models with 9, 12, and 15 stories are analyzed with and without shear walls using static and dynamic methods. The buildings are assumed to be located in seismic zones III, IV, and V. Response parameters of lateral displacement and story drift are compared. Results show that story drift and displacement increase with zone intensity and number of stories. Shear walls and dynamic analysis help reduce drift and displacement. Dynamic analysis provides more accurate results than static analysis. In conclusion, floating columns can increase vulnerability in earthquakes, but this can be mitigated with shear walls.
IRJET- Comparative Study of Seismic Analysis of Multi Storied Building with a...IRJET Journal
This document presents a comparative study of the seismic analysis of a 4-story building with and without a floating column using ETABS software. 4 models are analyzed: Model 1 without a floating column, Models 2-3 with a floating column in the 1st and 2nd floors respectively, and Model 4 with a floating column in the 3rd floor. The results show that storey displacement, drift and shear generally increase with the addition of a floating column compared to the building without. Specifically, storey displacement increases 5-10% and storey drift increases 5-10% for models with a floating column. While floating columns provide architectural benefits, the study finds they decrease structural performance in seismic zones and existing structures with them should be
IRJET- Comparative Analysis of Seismic Performance of R.C Building Restin...IRJET Journal
This document presents a comparative analysis of the seismic performance of reinforced concrete buildings resting on plain ground versus sloping ground at various inclinations. Four analytical building models were created and analyzed using finite element software: a building on plain ground, and buildings on ground sloping at 15, 25, and 35 degrees. The models were 7 stories tall with the same structural properties. Dynamic analysis results showed increased modal periods, story drifts, and displacements for buildings on steeper slopes, indicating worse performance. Buildings on 25 and 35 degree slopes in particular experienced sudden stiffness changes and highest displacements. The 35 degree slope building performed worst. In general, seismic performance decreased with increasing slope inclination.
IRJET- Comparative Analysis on Seismic Behaviour of Regular and Verticall...IRJET Journal
The document compares the seismic behavior of regular and vertically irregular reinforced concrete framed buildings with and without shear walls through structural analysis. Eight building models are created - regular and irregular structures both with and without shear walls in different locations. Equivalent static analysis and response spectrum analysis are performed to obtain seismic responses like base shear, storey shear, storey displacement, storey drift, and time period. Results show that structures with shear walls experience less seismic response compared to structures without shear walls. Irregular structures with shear walls also show lower responses than regular structures.
Behavioural studies of floating column on framed structureeSAT Journals
Abstract RCC concrete column means cement concrete reinforced with steel bars, steel plates, steel mesh etc. to increase the tension withstanding capacity of the structure. The term floating column means that the column is floated between two floors. Various types of structures G+3, G+5 and G+10 for RCC column and floating column are analyzed. The difference between G+3, G+5 and G+ 10 structures are shown by graphs and charts. Comparison will be done on bending moment and shear force between these structures. This paper presents the analysis of floating column and RCC column by using STAAD PRO V8i. Keywords: Floating Column, RCC column shear force and bending moment.
The document discusses the philosophy of seismic design of building structures. It explains that seismic design aims to allow some damage to occur in major earthquakes to avoid collapse, by designing structures to yield in specific zones. This dissipates energy through hysteretic damping. Structures are designed to remain elastic in minor quakes and have minimal damage in moderate quakes. Common lateral force resisting systems for reinforced concrete buildings are then described, including moment frames, shear walls, dual frames+walls, braced frames, trussed frames, and tube frames.
Seismic response of multi storey irregular building with floating columneSAT Journals
Abstract
In recent times, multi-storey buildings in urban cities are required to have column free space due to shortage of space, population and also for aesthetic and functional requirements. For this buildings are provided with floating columns at one or more storey. These floating columns are highly disadvantageous in a building built in seismically active areas. The earthquake forces that are developed at different floor levels in a building need to be carried down along the height to the ground by the shortest path. Deviation or discontinuity in this load transfer path results in poor performance of the building. In this paper, the critical position of floating column in vertically irregular buildings has been discussed for G+5 and G+7 RC buildings for zone II and zone V. Also the effect of size of beams and columns carrying the load of floating column has been assessed. The response of building such as storey drift, storey displacement and storey shear has been used to evaluate the results obtained using ETABS software.
Keywords: Floating column, Irregular building, Response spectrum method
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.
IRJET- Seismic Analysis of Buildings with Shear Wall having Horizontal Ir...IRJET Journal
This document analyzes the seismic behavior of five 6-story buildings with horizontal irregularities: E-shaped, I-shaped, L-shaped, +-shaped, and box-shaped. The buildings are modeled in SAP2000 and analyzed using response spectrum analysis according to Indian codes for seismic design. Parameters like lateral displacement, base shear, story drift, and period are compared. Results show the E-shaped building experiences the highest base shear and lateral displacement, while the +-shaped building experiences the lowest. The L-shaped building has the highest displacement in the X-direction, while the +-shaped building remains the lowest. In conclusion, horizontal irregularity affects the seismic response of buildings.
Seismic performance of r c buildings on sloping grounds with different types ...eSAT Journals
Abstract
Structure are highly susceptible to serve damages in earthquake scenario, so choosing an appropriate lateral force resisting
bracing systems will have a significant effect on performance of the structure. So this present study is aimed at evaluating and
comparing various types of eccentric steel bracings for 12 storey RC frame building resisting on sloping ground configurations.
For this 5 types of bracing systems like X-Bracing, Diagonal bracing, K- bracing, V-bracing and inverted V bracing are
considered on the outer periphery of the buildings with step back and set back – step back type configurations are modeled and
analyzed. The models are compared for different aspects within the structure, such as the maximum storey displacement, base
shear, storey drift and storey shear, the structure is analyzed for seismic zone V and medium soil condition as per IS 1893:2002
using ETABS software. Results conclude that on sloping ground due to irregularity on ground surface, the structures are more
vulnerable to earthquakes. Hence use of eccentric steel bracing is an effective and economical way to resist earthquake forces,
Inverted V type bracing performs well compared to other bracing types. By using inverted V type bracing in step back buildings
types maximum storey displacement of 70% and storey drift of 66% are obtained. Similarly for setback – step back configuration
maximum storey displacement of 74% and storey drift of 70% are obtained respectively.
Keywords: X-Bracing, Diagonal Bracing, K- Bracing, V-Bracing and Inverted V Bracing
IRJET- Comparative Analysis of Regular and Irregular Configuration of Mul...IRJET Journal
This document analyzes the response of regular and irregularly configured multistory buildings in medium soil and various seismic zones. A 30-story building is modeled in ETABS software with both regular and irregular configurations. The models are analyzed using response spectrum analysis in seismic zones II and V. Results show that the irregular building experiences higher story displacements, drifts, forces, and accelerations compared to the regular building. The regular building has higher story stiffness and lower base shear. Therefore, irregular configurations perform poorer under earthquake loading with increased damage potential.
IRJET-Effect of Shear Wall on Seismic Performance of RC Open Ground Storey Fr...IRJET Journal
1. The study examines the effect of shear walls on the seismic performance of reinforced concrete open ground storey frame buildings.
2. Linear static and nonlinear static analyses are used to compare the performance of open ground storey buildings with and without shear walls. Various multiplication factors are applied to model strengthened configurations.
3. The results show that shear walls improve the capacity of open ground storey buildings to resist seismic forces but strengthening comes at a higher comparative cost.
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.
ANALYSIS OF SOFT STOREY FOR MULTI STORYED BUILDING IN ZONE-4Ijripublishers Ijri
This document analyzes the soft story effect in multi-story buildings located in seismic zone 4 of India. A soft story is defined as a story with significantly less stiffness than adjacent stories, often due to large open spaces. The document describes a model of a 21-story building analyzed using ETABS software. Results show increased displacement and drift when soft stories are located at lower floors compared to upper floors. Design of structural elements in soft stories must account for increased lateral loads during earthquakes. Providing shear walls can increase story stiffness and improve seismic performance of buildings with soft stories.
PERFORMANCE BASED ANALYSIS OF VERTICALLY IRREGULAR STRUCTURE UNDER VARIOUS SE...Ijripublishers Ijri
In the recent years a lot of attention has been given to the earthquake analysis of structure it is one of the most devastating
natural calamity and which causes severe damage not only to the properties but also to the lives. This is the
reason there has been a lot of focus on the structures to be earthquake resistant. Buildings get damaged mostly due
to the earthquake ground motions. In an earthquake, the building base experiences high frequency movements, which
results in the inertial force on the building and its components and this problem gets worse when a structure is irregular
in shape, size etc,. Therefore, there is a lot to work on the seismic behavior of the irregular building which might not
respond the way regular building does. It makes the irregular building quite more complex and unpredictable during
the course of an earthquake.
This document provides an introduction and overview of the structural design considerations for tall buildings. It discusses how mankind has sought to build taller structures throughout history as symbols of power. For tall buildings, lateral loads from wind and earthquakes must be effectively resisted to prevent shear failure, overturning, or excessive deflection. Various lateral load resisting systems are explored, including moment frames, braced frames, tube structures, and outrigger systems. Rigidity indices are used to compare the bending and shear resistance of different structural configurations. The challenges of seismic design are also addressed. The document reviews previous research on improving the performance of reinforced concrete frames through the addition of bracing or shear walls.
IRJET- Analysis and Design of Regular and Irregular BuildingsIRJET Journal
The document analyzes and compares the structural design of regular and irregular reinforced concrete (RCC) buildings. It finds that irregular buildings experience increased torsion effects due to the center of mass and stiffness not coinciding. For an irregular L-shaped building studied, maximum horizontal displacement and torsion induced were higher compared to the regular building. Column forces and design requirements also differed between the regular and irregular structures due to the additional torsion effects in the irregular building. The study concludes that irregular building designs require relatively higher structural sections to account for increased stresses from torsion.
Design & Analysis of High rise Building With & Without Floating Column Using ...IJSRD
At present buildings with floating column is a typical feature in the modern multistory construction in urban India. There are many projects in which floating columns are adopted, especially above the ground floor, where transfer girders are employed, so that more open space is available in the ground floor. As the load path in the floating columns is not continuous, they are more vulnerable to the seismic activity. Sometimes, to meet the requirements these type of aspects cannot be avoided though these are not found to be of safe. Hence, an attempt is taken to study the behavior of a G+15 multi storey building in which some storey’s are considered for commercial purpose and remaining storey’s are for residential purpose. This paper studies the comparison & seismic analysis of the multistory buildings with floating column and without floating column. Finally, analysis & results in the high rise building such as storey drifts, storey displacement, and Base shear were shown in this study. Design and Analysis was carried out by using Extended Three Dimensional Analysis of Building Systems (ETABS) Software.
This project is to cover the graduation requirements for high Diploma of Higher College Of Technology. The research was on the earthquakes and it effects on the building. After that , designing system that help us to control the effect of earthquakes. This system has structure components that should be under consideration. Also, installing the Tuned Mass Dumper TMD in the structure and superstructure of building. This consisting of mass, spring and viscous dumper. The viscous dumper will absorb the energy of the vibration due to earthquakes. Part of calculations, it’s important to study the Flexibility influence coefficient. It focuses on the behavior in terms of stiffness and flexibility. Another important subject is mass stiffness and matrices. This provides the simplest representation of a building for the purposes of investigating lateral dynamic responses.
Seismic Analysis of Regular and Irregular Buildings with Vertical Irregularit...IRJET Journal
This document analyzes the seismic response of regular and irregular buildings with vertical irregularities using STAAD.Pro software. Six building models are analyzed - three regular buildings with stepped, inverted-T, and U-shaped vertical irregularities, and three irregular (H-shaped plan) buildings with the same vertical irregularities. Response spectrum analysis is used to determine maximum displacements, base shear, frequencies, and time periods. Results show irregular buildings have higher displacements and lower frequencies than regular buildings. The regular building with a U-shaped vertical irregularity performed the worst with the highest displacements. In conclusion, regular buildings performed better seismically than irregular buildings with vertical irregularities.
IRJET- Seismic Analysis of Building Resting on Sloping Ground with Soil S...IRJET Journal
This document analyzes the seismic response of 20-story reinforced concrete buildings resting on sloping ground with and without considering soil-structure interaction. Eight structural models are considered including buildings on flat ground and slopes of 10, 20, and 30 degrees, both with and without flexible foundations representing soft, medium, and hard soil types. Response spectrum analysis is used to compare displacement, drift, base shear, and other response parameters. The results show that considering soil-structure interaction leads to increased displacement, drift, and decreased base shear compared to fixed foundation models. Displacement and drift also tend to increase with softer soil types and greater slope angles.
IRJET- Static and Dynamic Analysis of Multistorey Buildings having Floating C...IRJET Journal
This document analyzes the behavior of multistory buildings with floating columns, which do not extend all the way from the top floor to the foundation. Three building models with 9, 12, and 15 stories are analyzed with and without shear walls using static and dynamic methods. The buildings are assumed to be located in seismic zones III, IV, and V. Response parameters of lateral displacement and story drift are compared. Results show that story drift and displacement increase with zone intensity and number of stories. Shear walls and dynamic analysis help reduce drift and displacement. Dynamic analysis provides more accurate results than static analysis. In conclusion, floating columns can increase vulnerability in earthquakes, but this can be mitigated with shear walls.
IRJET- Comparative Study of Seismic Analysis of Multi Storied Building with a...IRJET Journal
This document presents a comparative study of the seismic analysis of a 4-story building with and without a floating column using ETABS software. 4 models are analyzed: Model 1 without a floating column, Models 2-3 with a floating column in the 1st and 2nd floors respectively, and Model 4 with a floating column in the 3rd floor. The results show that storey displacement, drift and shear generally increase with the addition of a floating column compared to the building without. Specifically, storey displacement increases 5-10% and storey drift increases 5-10% for models with a floating column. While floating columns provide architectural benefits, the study finds they decrease structural performance in seismic zones and existing structures with them should be
IRJET - A Review on Seismic Behaviour of Floating Column and Transfer BeamIRJET Journal
This document reviews the seismic behavior of floating columns and transfer beams in buildings. It discusses how floating columns, which do not extend fully to the foundation, can negatively impact seismic performance by disrupting the load path. The document summarizes several past studies that have analyzed buildings with and without floating columns using structural analysis software. Response spectrum and time history analyses were used to compare seismic parameters like time period, base shear, displacements, and drifts. The studies found that buildings with floating columns generally have increased time periods, displacements and drifts compared to identical buildings without floating columns. However, base shear may be lower for buildings with floating columns. Proper design and reinforcement of transfer beams that support floating columns is emphasized.
Optimization of Circular RC Frame Structure by Using Shear Wall at a Differen...IRJET Journal
This document reviews research on optimizing the location of shear walls in circular reinforced concrete (RC) frame structures. It discusses two types of circular buildings - with and without inner courtyards. The primary goal of placing shear walls in different locations is to determine the most stable configuration. The literature review summarizes several papers that analyzed seismic performance of RC buildings using software like ETABS and SAP2000. The papers found that zigzag and diagonal shear wall layouts improved strength and stiffness compared to other configurations. Irregularly shaped buildings experienced greater displacements under earthquake loads than regular structures. Properly locating shear walls can optimize a circular building's stability.
IRJET- A Review on Seismic Analysis and Sustainability of Multi Storey Struct...IRJET Journal
This document reviews seismic analysis of multi-storey structures with and without floating columns. Floating columns do not extend fully to the foundation and instead rest on beams, creating discontinuities in the load transfer path. Several studies are summarized that analyze structural response parameters like storey drift, displacement, and base shear for buildings with and without floating columns using software like SAP2000, STAAD, and ETABS. In general, buildings with floating columns experience greater displacements and are more susceptible to damage during earthquakes compared to comparable buildings without floating columns. Retrofitting techniques like adding shear walls can improve seismic performance by increasing stiffness, strength, and ductility.
IRJET- Seismic Analysis of Multi-Storied Building with Floating ColumnIRJET Journal
This document presents the results of a seismic analysis of multi-story buildings with floating columns located at the 8th story. Three building models were analyzed: a 12-story building, 14-story building, and 16-story building, all with plan dimensions of 21m x 21m. The buildings were analyzed for different seismic zones using ETABS software. The analysis found that lateral displacement and story drift increased from lower to higher seismic zones due to the increased ground motion. For some models and zones, displacement values exceeded permissible limits, requiring strengthening of structural members. In general, displacement was greater in the Y-direction than the X-direction. The presence of a floating column increased displacement and drift compared to buildings without floating columns,
Performing Pushover Analysis on High Rise Building With and Without Shear WallIRJET Journal
This document discusses performing pushover analysis on a high rise building model with and without shear walls. It describes modeling a 15-story building in ETABS and analyzing it using pushover analysis. Four models are considered: a bare frame, shear walls at the center, shear walls at the exterior, and shear walls at the corners. Pushover analysis is conducted in both X and Y directions to determine storey forces, displacements, stiffness, and the base shear-displacement curve for each model. Results are presented in tables and graphs to compare the performance of each structural configuration under seismic loading.
Effect of Infill and Mass Irregularity on RC Building under Seismic LoadingIRJET Journal
The document summarizes a study on the effect of infill and mass irregularity on the seismic performance of reinforced concrete buildings. Nine building models were analyzed, including regular bare frame models and models with irregularities due to partial masonry infill or additional mass at certain floors. Response spectrum analysis was conducted on the models and responses like displacement, drift, overturning moment, shear force and stiffness were compared. The results showed that infill walls enhance seismic performance by reducing displacement and drift, while increasing stiffness, but cause higher forces. Mass irregularity increased displacement, drift and forces in intermediate floors but had little effect at the top and bottom. Irregular buildings generally performed poorer under seismic loading than the regular bare frame model.
IRJET- Seismic Analysis of a RC Multi Storey Building with and without Floati...IRJET Journal
This document summarizes a study on the seismic analysis of reinforced concrete multi-story buildings with and without floating columns. Floating columns are columns that are supported by beams instead of extending fully to the foundation. The study models a 10-story building in different configurations using finite element software to analyze seismic performance parameters like story displacement, drift, base shear, and forces for buildings with floating columns at various locations compared to a building without floating columns. The goal is to evaluate how floating columns affect seismic response and identify any resulting irregularities. Seven building models are analyzed for two seismic zones, with floating columns positioned at interior corners, alternating longer spans, and alternating shorter spans at the ground and first floors.
IRJET- Performance of Multi-Story RCC Structure with Floating ColumnIRJET Journal
This document summarizes a research paper that analyzed the performance of multi-story reinforced concrete (RCC) structures with floating columns. The researchers used ETABS software to model a 10-story building and compare the results of conventional linear static analysis to sequential construction analysis. They found that sequential construction analysis, which applies loads stage-by-stage as construction progresses, produced higher deformations, bending moments, and shear forces in the transfer beams supporting floating columns compared to conventional analysis. Deformations were 43-59% higher with sequential analysis. Bending moments and shear forces also increased more for floating columns located at building corners compared to the middle. The researchers concluded floating column structures require sequential construction analysis to accurately capture their behavior.
STUDY OF A FLAT SLAB BUILDING WITH A SHEAR WALL AT PERIPHERY AND FLAT SLAB WI...IRJET Journal
This document analyzes and compares the seismic performance of two flat slab building models - one with shear walls around the periphery and one with flat slabs with drops. Nonlinear pushover analysis is conducted using ETABS software. The results show that the building with shear walls at the periphery performs better in terms of overturning moment, storey drift, stiffness and storey shear. It experiences less lateral displacement and damage under seismic loads compared to the flat slab building with drops. In conclusion, the shear wall model provides better seismic stability and resistance to lateral forces.
IRJET- Analysis and Design of Residential Building with Floating ColumnIRJET Journal
This document analyzes and designs a residential building with floating columns in India. It discusses:
1) The building has G+6 floors and floating columns are used to provide open space for parking and other functions.
2) The floating columns are modeled and analyzed using ETABS software according to Indian design codes.
3) The analysis examines different cases of removing columns on different floors to study the building's behavior under various conditions. Transfer beams are designed to support the loads from the floating columns.
Seismic Response of Multi storey Flat Slab Building with and without Shear WallIRJET Journal
This document summarizes a research study that analyzed the seismic response of a 20-story flat slab building (G+19) with and without shear walls through dynamic time history analysis using ETABS software. Four models were analyzed: 1) a flat slab building without shear walls, 2) a flat slab building with a shear wall in the building core, 3) a flat slab building with shear walls at the building corners, and 4) a flat slab building with shear walls at the side centers of the perimeter boundary. The study found that the addition of shear walls improved the building's lateral resistance and reduced displacements and drifts compared to the flat slab building without shear walls. The most effective configuration was the flat slab building with a
SEISMIC RISK ASSESSMENT OF RC FRAMED VERTICALLY IRREGULAR BUILDINGSIRJET Journal
The document discusses seismic risk assessment of vertically irregular reinforced concrete (RC) framed buildings. It focuses on open ground storey (OGS) buildings designed using different magnification factors, as well as stepped irregular buildings with specific geometry configurations. Fragility curves are developed for each type of building using performance-based seismic design modeling and analysis. The conclusions drawn are that an OGS building with a magnification factor of around 1.5 performs similarly to a fully infilled building. However, increasing the magnification factor improves OGS building performance but makes adjacent stories more vulnerable.
Effect of Soft Storey on Regular and Irregular RCC Structure with Different B...IRJET Journal
This document summarizes a study on the effect of soft stories on regular and irregular reinforced concrete structures with different bracing systems under seismic conditions. It presents the results of dynamic analysis using response spectrum analysis conducted in ETABS 2013 on 8 structural models - 4 regular plans and 4 irregular plans, with and without inverted V, V, and X bracing. Key findings include: 1) Bracing increased base shear in both regular and irregular structures; 2) Regular structures experienced lower maximum story displacements than irregular; 3) Inverted V and X bracing most reduced displacements in regular structures with soft story; 4) Irregularity affected structural behavior with bracing. Bracing generally reduced story drifts and displacements.
A Review on Analysis of a Tall Structure with Shear Panel and Floating Columnsijtsrd
For effective design and good construction practises of multistory buildings, numerous prior studies have been conducted. When an earthquake strikes a palace, seismic stresses are produced at the buildings floor level. A variety of structure damage was seen after the earthquake. This study was conducted in seismic zone IV. In this work, we examine how tall structures with and without floating columns behave seismically. There are various situations in multistory buildings when it may be difficult to place a column in a certain spot.This study compares two multistory buildings, one of which supports its columns directly from the ground, and the other of which has floating columns in various locations. We prepared the model for the same height, the same plan, and the same loading condition for this analysis using the Staad Pro software. We are using an 11 story building with a 33.8 meter overall height and a layout that measures 18.92 by 19.78 metres for our analysis. There are 50 columns in the building, and 12 of them are supported by ground floor beams rather than the ground.These columns are termed as floating columns. We are providing a shear panels in those locations where the columns are supported. This shear wall transfers the load coming from the floating columns to the wall supporting columns. By considering these conditions we analysis both structures and find out the results of using floating columns in the same building. In this analysis to comparison of behavior of tall buildings using with and without floating column is concluded on parameters maximum beam moment, maximum beam shear and maximum nodal deflection and volume of concrete and volume of steel . By considering these conditions we analysis both structures and find out the results of using floating columns in the same building. Munish Kumar Singh | Prof. Afzal Khan "A Review on Analysis of a Tall Structure with Shear Panel and Floating Columns" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-7 | Issue-2 , April 2023, URL: https://www.ijtsrd.com.com/papers/ijtsrd57440.pdf Paper URL: https://www.ijtsrd.com.com/engineering/civil-engineering/57440/a-review-on-analysis-of-a-tall-structure-with-shear-panel-and-floating-columns/munish-kumar-singh
Designing shear walls based G+5 Commercial buildingIRJET Journal
This document describes the seismic analysis and design of a G+5 commercial building with shear walls in India. It involves modeling the building in ETABS to analyze storey displacements, drifts, stiffness, and overturning moments under earthquake loading in two horizontal directions. Key results found include the building having maximum displacements of 0.0359mm and 0.040262mm in the X and Y directions respectively. Storey drift was found to be highest at 0.000003mm and 0.000004mm in the X and Y directions. Storey stiffness peaked at 1.76E+9kN/m and 2.34E+9kN/m, while overturning moment reached 947.63
IRJET- Performance of Framed Building with Soft Storey at Different LevelsIRJET Journal
This document summarizes a study on the performance of framed buildings with soft storeys at different levels. A soft storey is defined as one with lower lateral stiffness than the floor above. Soft storeys are prone to damage during earthquakes as lateral forces concentrate in the soft storey. The study analyzes a G+20 building model with soft storeys placed at different heights using response spectrum analysis. Response spectrum analysis allows studying the effect of soft storey placement by providing the response to applied loads and ground motion conditions. The objectives are to analyze displacement, stiffness, inter-storey drift, and base shear for the different soft storey configurations and identify the arrangement with minimum damage.
COMPARATIVE SEISMIC ANALYSIS OF A MULTI-STOREY RCC STRUCTURE WITH & WITHOUT F...IRJET Journal
This document discusses a comparative seismic analysis of a multi-storey reinforced concrete structure with and without floating columns located in seismic Zone IV, using computer software ETABS. Four cases are analyzed: Case 1 with no floating columns, and Cases 2-4 with floating columns at different locations on the ground floor. Parameters compared include storey drift, displacement, and shear. Results show that the presence of floating columns increases storey drift and displacement due to discontinuity in load transfer, with interior floating columns performing better than exterior columns. The study seeks to evaluate the impact of floating columns on the structure's seismic performance and response.
IRJET- Comparative Analysis of Seismic Behavior of Flat Slab and Conventional...IRJET Journal
This document presents a comparative analysis of the seismic behavior of flat slab and conventional reinforced concrete framed structures. It discusses how flat slab structures, which do not have beams but instead have columns that directly support the slab, have more flexibility under lateral loads than conventional framed structures. The document reviews past research on the seismic response of flat slab buildings and their performance compared to framed structures. It then describes the methodology used, including dynamic analysis via time history and response spectrum methods. Models of a 9-story flat slab structure and conventional framed structure were created in ETABS software and their storey displacements, storey shears, base shears, and overall seismic performances were compared. Results showed the flat slab structure experienced greater displacements, store
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TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
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Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
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Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
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Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
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Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
Applications of artificial Intelligence in Mechanical Engineering.pdfAtif Razi
Historically, mechanical engineering has relied heavily on human expertise and empirical methods to solve complex problems. With the introduction of computer-aided design (CAD) and finite element analysis (FEA), the field took its first steps towards digitization. These tools allowed engineers to simulate and analyze mechanical systems with greater accuracy and efficiency. However, the sheer volume of data generated by modern engineering systems and the increasing complexity of these systems have necessitated more advanced analytical tools, paving the way for AI.
AI offers the capability to process vast amounts of data, identify patterns, and make predictions with a level of speed and accuracy unattainable by traditional methods. This has profound implications for mechanical engineering, enabling more efficient design processes, predictive maintenance strategies, and optimized manufacturing operations. AI-driven tools can learn from historical data, adapt to new information, and continuously improve their performance, making them invaluable in tackling the multifaceted challenges of modern mechanical engineering.
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
artificial intelligence and data science contents.pptxGauravCar
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
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Artificial intelligence (AI) | Definitio
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.