This document summarizes a study on the wind behavior of 15-story and 20-story buildings with and without shear walls. STAAD PRO software was used to analyze models of the buildings. Results showed that buildings with shear walls experienced less deflection, with displacements reduced by 20.18% for the 15-story building and 14.6% for the 20-story building, compared to buildings without shear walls. Shear walls more effectively resisted wind loads.
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
IRJET- A Study on RCC Frames under Sloping Ground with Different Shear Wall C...IRJET Journal
This document analyzes the seismic behavior of reinforced concrete buildings on sloping ground using STAAD Pro software. Three sloping shaped frames (10-degree, 15-degree, and 20-degree slopes) with different shear wall conditions (no shear wall, shear wall up to 2 stories, shear wall up to 4 stories, and full shear wall) are modeled and analyzed. The analysis finds that displacement, stress, storey shear, and drift are lowest for frames with full shear walls compared to other wall conditions. While increasing slope does not significantly affect building response, full shear walls most effectively minimize displacement. Retrofitting top columns and adding optimally located shear walls can further improve seismic performance of sloping frames.
Behavioural Study of RC Flat Plate Multi-Storey Building Persuaded By Stiffne...IJERA Editor
With a very swift development in urban areas the framed structures which are infilled by brick masonry or
concrete blocks are widely used as partition walls and also exterior walls. Masonry infill walls are common
element in structural system which modifies the conduction of building under the lateral load. These structures
resist the moderate earthquakes and accomplish well in such a prime manner that even if they have no load
bearing function. Evidently, during the time of resolution of such a multi-storey structure, the infilled frame is
considered as bare frame, because IS codes do not provide any guide lines for the analysis and design of RC
frames with infill wall. This paper addresses the numerical study of G+10 RC flat plate framed building with
different cases i.e, soft story at ground level (Basement), with soft story at 5th floor level, without soft storey and
bare frame building by using ETABS as soft computing tool. All these cases are analyzed for equivalent static
method and Response spectrum method. By this, dynamic properties are evaluated and according to the results
obtained conclusions are drawn
Study of Strength of RC Shear Wall at Different Location on Multi-Storied Res...IJERA Editor
This document analyzes the strength of reinforced concrete shear walls at different locations in a multi-story residential building. It describes analyzing a 6-story building model in Hyderabad, India using ETABS software. Four models are considered: without shear walls, with L-shaped shear walls, with perimeter shear walls, and with cross-shaped shear walls. Analysis results show that perimeter shear walls most reduced maximum deflection and drift compared to other models. Shear forces in beams were highest for the perimeter wall model at the ground level and decreased with height. Bending moments in beams were highest for the perimeter wall model at the top level.
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
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
Seismic Performance Evaluation of Multi-Storeyed R C Framed Structural System...IJERA Editor
Masonry infills are normally considered as non-structural elements and their stiffness contributions are generally ignored in practice. But they affect both the structural and non-structural performance of the RC buildings during earthquakes. RC frame building with open first storey is known as soft storey, which performs poorly during strong earthquake shaking. A similar soft storey effect can also appear at top storey level if a storey used as a service storey. Hence a combination of two structural system components i.e. Rigid frames and RC shear walls leads to a highly efficient system in which shear wall resist the majority of the lateral loads and the frame supports majority of the gravity loads. To study the effect of masonry infill and different soft storey level, 11 models of R C framed building were analyzed with two types of shear wall when subjected to earthquake loading. The results of bare frame and other building models have been compared, it is observed that model with swastika and L shape shear wall with core wall are showing efficient performance and hence reducing the effect of soft storey and also reducing the effect of water pressure in the top soft storey.
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
IRJET- A Study on RCC Frames under Sloping Ground with Different Shear Wall C...IRJET Journal
This document analyzes the seismic behavior of reinforced concrete buildings on sloping ground using STAAD Pro software. Three sloping shaped frames (10-degree, 15-degree, and 20-degree slopes) with different shear wall conditions (no shear wall, shear wall up to 2 stories, shear wall up to 4 stories, and full shear wall) are modeled and analyzed. The analysis finds that displacement, stress, storey shear, and drift are lowest for frames with full shear walls compared to other wall conditions. While increasing slope does not significantly affect building response, full shear walls most effectively minimize displacement. Retrofitting top columns and adding optimally located shear walls can further improve seismic performance of sloping frames.
Behavioural Study of RC Flat Plate Multi-Storey Building Persuaded By Stiffne...IJERA Editor
With a very swift development in urban areas the framed structures which are infilled by brick masonry or
concrete blocks are widely used as partition walls and also exterior walls. Masonry infill walls are common
element in structural system which modifies the conduction of building under the lateral load. These structures
resist the moderate earthquakes and accomplish well in such a prime manner that even if they have no load
bearing function. Evidently, during the time of resolution of such a multi-storey structure, the infilled frame is
considered as bare frame, because IS codes do not provide any guide lines for the analysis and design of RC
frames with infill wall. This paper addresses the numerical study of G+10 RC flat plate framed building with
different cases i.e, soft story at ground level (Basement), with soft story at 5th floor level, without soft storey and
bare frame building by using ETABS as soft computing tool. All these cases are analyzed for equivalent static
method and Response spectrum method. By this, dynamic properties are evaluated and according to the results
obtained conclusions are drawn
Study of Strength of RC Shear Wall at Different Location on Multi-Storied Res...IJERA Editor
This document analyzes the strength of reinforced concrete shear walls at different locations in a multi-story residential building. It describes analyzing a 6-story building model in Hyderabad, India using ETABS software. Four models are considered: without shear walls, with L-shaped shear walls, with perimeter shear walls, and with cross-shaped shear walls. Analysis results show that perimeter shear walls most reduced maximum deflection and drift compared to other models. Shear forces in beams were highest for the perimeter wall model at the ground level and decreased with height. Bending moments in beams were highest for the perimeter wall model at the top level.
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
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
Seismic Performance Evaluation of Multi-Storeyed R C Framed Structural System...IJERA Editor
Masonry infills are normally considered as non-structural elements and their stiffness contributions are generally ignored in practice. But they affect both the structural and non-structural performance of the RC buildings during earthquakes. RC frame building with open first storey is known as soft storey, which performs poorly during strong earthquake shaking. A similar soft storey effect can also appear at top storey level if a storey used as a service storey. Hence a combination of two structural system components i.e. Rigid frames and RC shear walls leads to a highly efficient system in which shear wall resist the majority of the lateral loads and the frame supports majority of the gravity loads. To study the effect of masonry infill and different soft storey level, 11 models of R C framed building were analyzed with two types of shear wall when subjected to earthquake loading. The results of bare frame and other building models have been compared, it is observed that model with swastika and L shape shear wall with core wall are showing efficient performance and hence reducing the effect of soft storey and also reducing the effect of water pressure in the top soft storey.
Enhancing Resistance Capacity of Soft Storey Building by Means of Shearwall I...IRJET Journal
This document presents a study on enhancing the seismic resistance of soft-storey buildings through the use of shear walls. A parametric study was conducted on buildings with different ground floor heights, soil types, and lateral load resisting systems (ordinary moment frames, frames with shear walls, frames with masonry infill modeled as equivalent struts). Static analysis found that shear walls and struts reduced lateral drift, and stiffer soils reduced base shear. Pushover analysis determined that steel shear walls performed best but were too costly, while composite walls provided an economical improvement in strength over concrete shear walls. The inclusion of masonry infill struts further improved strength by up to 12.7%. In conclusion, composite shear walls with
This document summarizes a study on the effect of soft stories in high-rise buildings. A soft story is one where the lateral stiffness is significantly less than the stories above, such as an open ground floor. Five analytical models of a 12-story reinforced concrete building were created with soft stories at different levels to investigate the structural response. The models were analyzed using SAP2000 software. Placement of the soft story, inclusion or removal of interior columns, and addition of shear walls were varied between models. Results such as displacements, drifts, and shears were compared to evaluate the impact of soft story location and design. The goal was to better understand soft story effects on seismic performance of high-rise structures.
IRJET-Effect of Shear Wall on Seismic Performance of RC Open Ground Storey Fr...IRJET Journal
This document discusses the effect of shear walls on the seismic performance of reinforced concrete (RC) buildings with an open ground story (OGS). It analyzes various frame configurations of a 4-story RC building through linear static and nonlinear static (pushover) analyses. The key findings are:
1. The addition of RC shear walls significantly increases the base shear capacity and reduces the lateral displacement of OGS buildings under seismic loads, improving seismic performance.
2. Different multiplication factors are applied to the ground story to study their effect. Higher factors (1.5 to 3.0) further increase base shear capacity and reduce displacement compared to the base OGS frame.
3. Shear wall-frame interaction
IRJET- A Parametric Study on the Siesmic Performance of Flat Slab Multi-S...IRJET Journal
This document summarizes a research paper that analyzes the seismic performance of 10-story flat slab buildings with bracing subjected to different types of irregularities.
The paper models a regular flat slab building and flat slab buildings with vertical geometric irregularities, stiffness irregularities, and torsional irregularities using ETABS software. Response spectrum analysis is performed to analyze story drift, time period, story displacement, base shear, and story stiffness.
The results show that the building with torsional irregularities experienced the highest story displacements, around 24% more than the regular building. Buildings with vertical geometric and stiffness irregularities also had increased story displacements compared to the regular building, but to a lesser extent.
IRJET- Time History Analysis of Masonry Infilled RC Frames with Soft Stor...IRJET Journal
The document presents a study on the time history analysis of masonry infilled reinforced concrete (RC) frames with a soft story and varying sizes of openings using the equivalent diagonal strut method in ETABS software. The study considers a 10-story RC building located in a high seismic zone and analyzes models of the bare frame, fully infilled frame, soft story infilled frame, and frames with infilled walls containing 15%, 30%, and 45% central openings. Results for story displacement, drift, base shear, bending moment, and lateral stiffness are compared. It is observed that infill walls increase structural strength and stiffness but openings decrease the lateral stiffness of infilled and equivalent diagonal strut frames, with larger openings leading
Lateral Load Analysis of Shear Wall and Concrete Braced Multi-Storeyed R.C Fr...ijsrd.com
This document analyzes the lateral load performance of different reinforced concrete frame models of a 12-story building using structural analysis software. Eight models are considered: a bare frame, fully infilled frame, frames infilled except the ground floor, and frames with shear walls, core walls or bracing in different configurations. Dynamic analysis shows fundamental periods are lowest for models with shear walls or bracing. Base shear and story drifts are highest for the bare frame and reduced by over 60% for infilled models. Models with ground soft-first story have increased drift, but shear walls or bracing can reduce drift by over 80% compared to the bare frame. Story displacements also decrease significantly with infilling or lateral load resisting elements.
A Study on Seismic Response of Reinforced Concrete Framed Buildings with and ...IRJET Journal
This document presents a study on the seismic response of reinforced concrete framed buildings with and without infill walls. It analyzes two buildings, one with 5 stories and one with 9 stories, using different modeling techniques in SAP2000 software. The buildings are modeled as bare frames without infills, with single diagonal struts, double struts, and triple struts to represent the infill walls. Results for parameters like total weight, period, base shear, and modal participation are compared between the different models to understand the effect of including infill walls in the analysis. The goal is to evaluate how masonry infill walls contribute to the seismic resistance of reinforced concrete buildings.
This document summarizes the results of a study analyzing the ductility of different outrigger typologies for high-rise structures under seismic loading. The study models 25, 30, and 35 story buildings with different outrigger configurations including rigid outriggers, vierendel outriggers, and bracing outriggers. Nonlinear pushover analyses were performed to generate capacity curves and evaluate ductility. The results show that while outriggers increase strength and stiffness, they reduce ductility. Vierendel outriggers have less effect on strength but increase ductility compared to other typologies. Bracing outriggers provide increased strength and stiffness without major changes to ductility. For new structures, outriggers with bracing
Comparative study on behaviour of RCC and steel – concrete composite multisto...IRJET Journal
This document compares the behavior of reinforced concrete (RCC) and steel-concrete composite multi-storey buildings through modeling and analysis. Three 10-story building models are created - one with RCC structure and two with composite structures using encased columns and concrete filled tubes. The models are analyzed using ETABS software to compare parameters like joint displacement, story drift, story shear, and cost. The results show that composite structures have higher joint displacements but lower story drifts and shears compared to RCC. Construction costs are also around 65% lower for the composite structures compared to RCC due to reduced concrete and rebar usage. In conclusion, composite structures provide better seismic performance and are more economical than conventional RCC
1) The document examines the seismic response of flat slab and grid slab buildings through dynamic analysis.
2) Two flat slab buildings and their inherent seismic resistance are evaluated when designed only for wind loads.
3) The conclusions show that while specific design parameters like drift, base shear, and overturning moment exceed wind design values, the structures have sufficient inherent capacity to resist moderate seismic loads if they satisfy wind criteria.
4) Dynamic analysis is performed to determine design seismic forces and their distribution for evaluation.
STRUCTURAL COST COMPARISON OF LOW RISE BUILDING HAVING MOMENT RESISTING FRAME...IAEME Publication
The document compares the structural cost of low-rise buildings with moment resisting frames and moment resisting frames with shear walls in different seismic zones. It presents a case study of a 4-story residential building modeled in STAAD Pro. The results show that in seismic Zone III, shear walls slightly increase costs but not above 10%. In Zone IV, costs are increased by up to 0.79% with shear walls. Shear walls are found to be more cost-effective in Zone V. Ratios of concrete/area, steel/concrete, and formwork/concrete are lower with shear wall designs. The study concludes shear walls make low-rise buildings more economical and resistant to earthquake damage in high seismic zones.
IRJET- Seismic Analysis of Confined Masonry Building and RCC BuildingIRJET Journal
This document discusses a study that compares the seismic analysis of confined masonry buildings and reinforced concrete (RCC) frame buildings. Confined masonry buildings use masonry walls confined by reinforced concrete tie columns and beams, which increases the strength and ductility of the structure compared to unreinforced masonry. The study uses software (ETABS) and manual calculations to analyze and compare the seismic performance of these building types based on parameters like base shear, storey drift, and lateral displacement. It provides background on confined masonry construction and outlines the methodology used for the seismic analysis, which includes calculating the base shear according to Indian codes and using different analysis methods like the response spectrum method.
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,
Highly Deformable Energy-Dissipating Reinforced Concrete Elements in Seismic ...IJERA Editor
Incorporating scrap tyre rubber particles as partial replacement for aggregates has been found to produce concrete with improved ductility, deformability and damping which are desired characteristics of a viable material for enhancing structural response to earthquake vibrations. An analytical study using Drain-2dX was carried out to investigate the response of 4-storey, 3-bay reinforced concrete frames on innovative rubberised concrete deformable foundation models to simulated earthquake scaled to 5 different peak ground accelerations. Stress-strain properties of 3-layers aramid fibre-reinforced polymer (FRP)-confinement for concrete incorporating waste rubber from scrap vehicle tyres were used to model the elements of this foundation models. With a partial decoupling of the superstructure from the direct earthquake force, the models showed up to 70% reduction in base shear, an improved overall q-factor of 7.1, and an estimated frame acceleration of 0.11g for an earthquake peak ground acceleration of 0.44g. This implies that a non-seismically designed reinforced concrete frame on the proposed rubberised concrete deformable foundation system would provide a simple, affordable and equally efficient alternative to the conventional and usually expensive earthquake resistant concrete frames. A supplementary Arrest System (SAS) was proposed to anchor the frame from the resulting soft storey at the rubberised concrete foundation. A further research is recommended for the design of concrete hinges with rubberised concrete as used in the model with the most impressive response
IRJET- Comparative Study of Flat Slab and Conventional Slab Structure wit...IRJET Journal
This document summarizes a study that analyzes and compares the seismic performance of flat slab and conventional slab structures with and without shear walls. A 15-story commercial building was modeled in ETABS and analyzed under seismic loads. The objectives were to identify the most effective structure for resisting lateral loads, the most vulnerable structure, and compare the displacement, drift, stiffness, overturning moment, and period of structures with and without shear walls. Key results showed that flat slab structures with shear walls had better displacement resistance than conventional slab structures. Displacement increased with building height. Story drift was highest for conventional slabs and lowest for flat slabs with shear walls. Conventional slab structures were stiffer than flat slab structures.
IRJET-Performance Improvement of Split Air Conditioner using Evaporative Cool...IRJET Journal
This document summarizes a study on the behavior of a 5-storey reinforced concrete building with different shear wall arrangements, with and without a central cross shear wall. 7 models of the building were analyzed using STAAD Pro software. Parameters like base shear, storey drift, nodal displacement, and maximum reactions were compared. Results showed that providing shear walls increases base shear and stiffness, reducing storey drift and nodal displacement. Maximum base shear and reactions occurred for models with shear walls at corners and in the middle. Models with a central cross shear wall generally performed better in resisting seismic loads.
This document provides a case study on the Pragati Towers project in Mumbai, India, which consisted of 11 high-rise residential buildings constructed using precast concrete systems. Some key points:
- It was the first large-scale prefabricated high-rise residential project in India, with buildings rising up to 70m tall and over 300 apartments in each tower.
- Innovative connection designs were implemented to allow for prefabricated construction while ensuring equivalent seismic performance to cast-in-place designs. This included emulative horizontal and vertical joint connections between precast wall panels.
- Challenges in adopting precast techniques for the first time in India included gaining acceptance for the new technology and
Stiffness degradation behavior of retrofitted rc infilled frame under cyclic ...eSAT Journals
Abstract The present study was to evaluate the load carrying capacity of retrofitted 3-bay 4-storey brick infill R.C frame using Ferro cement under cyclic loading. Generally bricks will not be considered as a structural element, but by an effective strengthening technique infill walls and RC frame elements can be kept together and forcing them to work as a whole until the end of the ground motion. The effectiveness of the retrofitted frame under cyclic load was investigated in terms of displacement, stiffness and load carrying capacity. Keywords: Retrofit, Ferro cement, R.C frame, brick infill, cyclic loading, stiffness degradation
Comparison of performance of lateral load resisting systems in multi storey f...eSAT Journals
Abstract This paper introduces the comparison between lateral load resisting systems in multi storey building. Multi storey building
composed of very special class of structure and therefore require special treatment. Hence to overcome the effects of seismic
forces, Flat slab system in which slab rests on drop or capital which is connected to column is induced with different load
resisting systems. The combined systems which is used to withstand seismic forces in this study are 1. Flat slab without lateral
load resisting system, 2. Flat slab with shear wall, 3. Flat slab with infill wall, 4. Flat slab with bracings, 5. Flat slab with shear
wall and bracings. ETABS software version is used to accomplish dynamic analysis and also building is investigated for nonlinear
static analysis in order to identify seismic demands. From the obtained results conclusions are drawn.
Keywords: Capital, Bracings, Dynamic, and Treatment etc…
El documento describe las características principales de las redes neuronales artificiales. Las redes neuronales artificiales son sistemas inspirados en las estructuras neurobiológicas del cerebro que pueden aprender de los datos y mejorar su desempeño mediante entrenamiento. Se comunican a través de sinapsis y neuronas similares al cerebro, y aprenden de los datos en lugar de seguir un programa fijo.
El resumen describe las actividades planeadas por la Asociación de Mujeres AMATISTA para la Semana del 25 de Noviembre de 2011 en Coín, Málaga, incluyendo una exposición de trabajos de estudiantes, funciones de teatro, aerobitón, lectura de un manifiesto y marcha contra la violencia de género. También se anuncia el V Certamen Provincial Escolar de Dibujo y Pintura con el tema de la no violencia hacia la mujer.
Enhancing Resistance Capacity of Soft Storey Building by Means of Shearwall I...IRJET Journal
This document presents a study on enhancing the seismic resistance of soft-storey buildings through the use of shear walls. A parametric study was conducted on buildings with different ground floor heights, soil types, and lateral load resisting systems (ordinary moment frames, frames with shear walls, frames with masonry infill modeled as equivalent struts). Static analysis found that shear walls and struts reduced lateral drift, and stiffer soils reduced base shear. Pushover analysis determined that steel shear walls performed best but were too costly, while composite walls provided an economical improvement in strength over concrete shear walls. The inclusion of masonry infill struts further improved strength by up to 12.7%. In conclusion, composite shear walls with
This document summarizes a study on the effect of soft stories in high-rise buildings. A soft story is one where the lateral stiffness is significantly less than the stories above, such as an open ground floor. Five analytical models of a 12-story reinforced concrete building were created with soft stories at different levels to investigate the structural response. The models were analyzed using SAP2000 software. Placement of the soft story, inclusion or removal of interior columns, and addition of shear walls were varied between models. Results such as displacements, drifts, and shears were compared to evaluate the impact of soft story location and design. The goal was to better understand soft story effects on seismic performance of high-rise structures.
IRJET-Effect of Shear Wall on Seismic Performance of RC Open Ground Storey Fr...IRJET Journal
This document discusses the effect of shear walls on the seismic performance of reinforced concrete (RC) buildings with an open ground story (OGS). It analyzes various frame configurations of a 4-story RC building through linear static and nonlinear static (pushover) analyses. The key findings are:
1. The addition of RC shear walls significantly increases the base shear capacity and reduces the lateral displacement of OGS buildings under seismic loads, improving seismic performance.
2. Different multiplication factors are applied to the ground story to study their effect. Higher factors (1.5 to 3.0) further increase base shear capacity and reduce displacement compared to the base OGS frame.
3. Shear wall-frame interaction
IRJET- A Parametric Study on the Siesmic Performance of Flat Slab Multi-S...IRJET Journal
This document summarizes a research paper that analyzes the seismic performance of 10-story flat slab buildings with bracing subjected to different types of irregularities.
The paper models a regular flat slab building and flat slab buildings with vertical geometric irregularities, stiffness irregularities, and torsional irregularities using ETABS software. Response spectrum analysis is performed to analyze story drift, time period, story displacement, base shear, and story stiffness.
The results show that the building with torsional irregularities experienced the highest story displacements, around 24% more than the regular building. Buildings with vertical geometric and stiffness irregularities also had increased story displacements compared to the regular building, but to a lesser extent.
IRJET- Time History Analysis of Masonry Infilled RC Frames with Soft Stor...IRJET Journal
The document presents a study on the time history analysis of masonry infilled reinforced concrete (RC) frames with a soft story and varying sizes of openings using the equivalent diagonal strut method in ETABS software. The study considers a 10-story RC building located in a high seismic zone and analyzes models of the bare frame, fully infilled frame, soft story infilled frame, and frames with infilled walls containing 15%, 30%, and 45% central openings. Results for story displacement, drift, base shear, bending moment, and lateral stiffness are compared. It is observed that infill walls increase structural strength and stiffness but openings decrease the lateral stiffness of infilled and equivalent diagonal strut frames, with larger openings leading
Lateral Load Analysis of Shear Wall and Concrete Braced Multi-Storeyed R.C Fr...ijsrd.com
This document analyzes the lateral load performance of different reinforced concrete frame models of a 12-story building using structural analysis software. Eight models are considered: a bare frame, fully infilled frame, frames infilled except the ground floor, and frames with shear walls, core walls or bracing in different configurations. Dynamic analysis shows fundamental periods are lowest for models with shear walls or bracing. Base shear and story drifts are highest for the bare frame and reduced by over 60% for infilled models. Models with ground soft-first story have increased drift, but shear walls or bracing can reduce drift by over 80% compared to the bare frame. Story displacements also decrease significantly with infilling or lateral load resisting elements.
A Study on Seismic Response of Reinforced Concrete Framed Buildings with and ...IRJET Journal
This document presents a study on the seismic response of reinforced concrete framed buildings with and without infill walls. It analyzes two buildings, one with 5 stories and one with 9 stories, using different modeling techniques in SAP2000 software. The buildings are modeled as bare frames without infills, with single diagonal struts, double struts, and triple struts to represent the infill walls. Results for parameters like total weight, period, base shear, and modal participation are compared between the different models to understand the effect of including infill walls in the analysis. The goal is to evaluate how masonry infill walls contribute to the seismic resistance of reinforced concrete buildings.
This document summarizes the results of a study analyzing the ductility of different outrigger typologies for high-rise structures under seismic loading. The study models 25, 30, and 35 story buildings with different outrigger configurations including rigid outriggers, vierendel outriggers, and bracing outriggers. Nonlinear pushover analyses were performed to generate capacity curves and evaluate ductility. The results show that while outriggers increase strength and stiffness, they reduce ductility. Vierendel outriggers have less effect on strength but increase ductility compared to other typologies. Bracing outriggers provide increased strength and stiffness without major changes to ductility. For new structures, outriggers with bracing
Comparative study on behaviour of RCC and steel – concrete composite multisto...IRJET Journal
This document compares the behavior of reinforced concrete (RCC) and steel-concrete composite multi-storey buildings through modeling and analysis. Three 10-story building models are created - one with RCC structure and two with composite structures using encased columns and concrete filled tubes. The models are analyzed using ETABS software to compare parameters like joint displacement, story drift, story shear, and cost. The results show that composite structures have higher joint displacements but lower story drifts and shears compared to RCC. Construction costs are also around 65% lower for the composite structures compared to RCC due to reduced concrete and rebar usage. In conclusion, composite structures provide better seismic performance and are more economical than conventional RCC
1) The document examines the seismic response of flat slab and grid slab buildings through dynamic analysis.
2) Two flat slab buildings and their inherent seismic resistance are evaluated when designed only for wind loads.
3) The conclusions show that while specific design parameters like drift, base shear, and overturning moment exceed wind design values, the structures have sufficient inherent capacity to resist moderate seismic loads if they satisfy wind criteria.
4) Dynamic analysis is performed to determine design seismic forces and their distribution for evaluation.
STRUCTURAL COST COMPARISON OF LOW RISE BUILDING HAVING MOMENT RESISTING FRAME...IAEME Publication
The document compares the structural cost of low-rise buildings with moment resisting frames and moment resisting frames with shear walls in different seismic zones. It presents a case study of a 4-story residential building modeled in STAAD Pro. The results show that in seismic Zone III, shear walls slightly increase costs but not above 10%. In Zone IV, costs are increased by up to 0.79% with shear walls. Shear walls are found to be more cost-effective in Zone V. Ratios of concrete/area, steel/concrete, and formwork/concrete are lower with shear wall designs. The study concludes shear walls make low-rise buildings more economical and resistant to earthquake damage in high seismic zones.
IRJET- Seismic Analysis of Confined Masonry Building and RCC BuildingIRJET Journal
This document discusses a study that compares the seismic analysis of confined masonry buildings and reinforced concrete (RCC) frame buildings. Confined masonry buildings use masonry walls confined by reinforced concrete tie columns and beams, which increases the strength and ductility of the structure compared to unreinforced masonry. The study uses software (ETABS) and manual calculations to analyze and compare the seismic performance of these building types based on parameters like base shear, storey drift, and lateral displacement. It provides background on confined masonry construction and outlines the methodology used for the seismic analysis, which includes calculating the base shear according to Indian codes and using different analysis methods like the response spectrum method.
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,
Highly Deformable Energy-Dissipating Reinforced Concrete Elements in Seismic ...IJERA Editor
Incorporating scrap tyre rubber particles as partial replacement for aggregates has been found to produce concrete with improved ductility, deformability and damping which are desired characteristics of a viable material for enhancing structural response to earthquake vibrations. An analytical study using Drain-2dX was carried out to investigate the response of 4-storey, 3-bay reinforced concrete frames on innovative rubberised concrete deformable foundation models to simulated earthquake scaled to 5 different peak ground accelerations. Stress-strain properties of 3-layers aramid fibre-reinforced polymer (FRP)-confinement for concrete incorporating waste rubber from scrap vehicle tyres were used to model the elements of this foundation models. With a partial decoupling of the superstructure from the direct earthquake force, the models showed up to 70% reduction in base shear, an improved overall q-factor of 7.1, and an estimated frame acceleration of 0.11g for an earthquake peak ground acceleration of 0.44g. This implies that a non-seismically designed reinforced concrete frame on the proposed rubberised concrete deformable foundation system would provide a simple, affordable and equally efficient alternative to the conventional and usually expensive earthquake resistant concrete frames. A supplementary Arrest System (SAS) was proposed to anchor the frame from the resulting soft storey at the rubberised concrete foundation. A further research is recommended for the design of concrete hinges with rubberised concrete as used in the model with the most impressive response
IRJET- Comparative Study of Flat Slab and Conventional Slab Structure wit...IRJET Journal
This document summarizes a study that analyzes and compares the seismic performance of flat slab and conventional slab structures with and without shear walls. A 15-story commercial building was modeled in ETABS and analyzed under seismic loads. The objectives were to identify the most effective structure for resisting lateral loads, the most vulnerable structure, and compare the displacement, drift, stiffness, overturning moment, and period of structures with and without shear walls. Key results showed that flat slab structures with shear walls had better displacement resistance than conventional slab structures. Displacement increased with building height. Story drift was highest for conventional slabs and lowest for flat slabs with shear walls. Conventional slab structures were stiffer than flat slab structures.
IRJET-Performance Improvement of Split Air Conditioner using Evaporative Cool...IRJET Journal
This document summarizes a study on the behavior of a 5-storey reinforced concrete building with different shear wall arrangements, with and without a central cross shear wall. 7 models of the building were analyzed using STAAD Pro software. Parameters like base shear, storey drift, nodal displacement, and maximum reactions were compared. Results showed that providing shear walls increases base shear and stiffness, reducing storey drift and nodal displacement. Maximum base shear and reactions occurred for models with shear walls at corners and in the middle. Models with a central cross shear wall generally performed better in resisting seismic loads.
This document provides a case study on the Pragati Towers project in Mumbai, India, which consisted of 11 high-rise residential buildings constructed using precast concrete systems. Some key points:
- It was the first large-scale prefabricated high-rise residential project in India, with buildings rising up to 70m tall and over 300 apartments in each tower.
- Innovative connection designs were implemented to allow for prefabricated construction while ensuring equivalent seismic performance to cast-in-place designs. This included emulative horizontal and vertical joint connections between precast wall panels.
- Challenges in adopting precast techniques for the first time in India included gaining acceptance for the new technology and
Stiffness degradation behavior of retrofitted rc infilled frame under cyclic ...eSAT Journals
Abstract The present study was to evaluate the load carrying capacity of retrofitted 3-bay 4-storey brick infill R.C frame using Ferro cement under cyclic loading. Generally bricks will not be considered as a structural element, but by an effective strengthening technique infill walls and RC frame elements can be kept together and forcing them to work as a whole until the end of the ground motion. The effectiveness of the retrofitted frame under cyclic load was investigated in terms of displacement, stiffness and load carrying capacity. Keywords: Retrofit, Ferro cement, R.C frame, brick infill, cyclic loading, stiffness degradation
Comparison of performance of lateral load resisting systems in multi storey f...eSAT Journals
Abstract This paper introduces the comparison between lateral load resisting systems in multi storey building. Multi storey building
composed of very special class of structure and therefore require special treatment. Hence to overcome the effects of seismic
forces, Flat slab system in which slab rests on drop or capital which is connected to column is induced with different load
resisting systems. The combined systems which is used to withstand seismic forces in this study are 1. Flat slab without lateral
load resisting system, 2. Flat slab with shear wall, 3. Flat slab with infill wall, 4. Flat slab with bracings, 5. Flat slab with shear
wall and bracings. ETABS software version is used to accomplish dynamic analysis and also building is investigated for nonlinear
static analysis in order to identify seismic demands. From the obtained results conclusions are drawn.
Keywords: Capital, Bracings, Dynamic, and Treatment etc…
El documento describe las características principales de las redes neuronales artificiales. Las redes neuronales artificiales son sistemas inspirados en las estructuras neurobiológicas del cerebro que pueden aprender de los datos y mejorar su desempeño mediante entrenamiento. Se comunican a través de sinapsis y neuronas similares al cerebro, y aprenden de los datos en lugar de seguir un programa fijo.
El resumen describe las actividades planeadas por la Asociación de Mujeres AMATISTA para la Semana del 25 de Noviembre de 2011 en Coín, Málaga, incluyendo una exposición de trabajos de estudiantes, funciones de teatro, aerobitón, lectura de un manifiesto y marcha contra la violencia de género. También se anuncia el V Certamen Provincial Escolar de Dibujo y Pintura con el tema de la no violencia hacia la mujer.
This document provides a summary of Robert Rabinovitz's professional portfolio, listing various consumer product design projects he has consulted on. These include showerheads, pool cleaners, desk accessories, pen systems, paper transport systems, coffee grinders, vehicle accessories, security desks, paper management systems, toys, packaging, furniture, and lighting installations. The portfolio shows Rabinovitz has experience consulting for companies in various industries on product design. It also lists collections of mirrors, desktop accessories, candles, and illuminated sculptures Rabinovitz created under his own label.
Sheet metal processes involve cutting, bending, and drawing operations. Shearing is the primary cutting operation used to cut sheet metal blanks from large sheets. It involves using a punch and die to cut along a straight line. Bending forms sheet metal by curving it around a straight axis and is done using V-bending or edge bending. Both cutting and bending can result in springback as the sheet tries to return to its original shape after forming. Process parameters like punch and die design, clearance, and lubrication affect the quality of cuts and bends in sheet metal fabrication.
32 Ways a Digital Marketing Consultant Can Help Grow Your BusinessBarry Feldman
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Review on Effective utilization of RCC Shear walls for Design of Soft Storey ...IJERA Editor
Multi-storey buildings in metropolitan cities require open taller first storey for parking of vehicle and/or for retail shopping, large space for meeting room or a banking hall owing to lack of horizontal space and high cost. Due to these functional requirements, the first storey has lesser strength and stiffness as compared to upper stories, which are stiffened by masonry infill walls. Increased flexibility of first storey results in extreme deflections, which in turn, leads to concentration of forces at the second storey connections accompanied by large plastic deformation. In addition, most of the energy developed during the earthquake is dissipated by the column of the soft stories. In this process the plastic hinges are formed at the ends of column, which transform the soft stories into a mechanism. In such cases the collapse is unavoidable. Therefore, the soft stories deserve a special consideration in analysis and design
Analysis of flat slab building with and without shear wall IJERA Editor
The analytical research carried out to study the behaviour flat slab building with and without shear wall reported in the present work. For analysis 15 storied flat slab building is analyzed for seismic behaviour. Response spectrum method is used for analysis considering different shear wall positions using ETABS software. Five different positions of shear wall were studied for analysis. From this analysis shear wall at core having square shape is most suitable case for construction of shear wall.
Comparative and Parametric Study of Hillside Gateway Project of Irregular Str...IRJET Journal
This document presents a comparative parametric study of the behavior of a 20-story building structure with irregularities under seismic loading for different lateral load resisting systems. Two models are considered - one with shear walls and one with a frame structure. The building is analyzed for different seismic zones and soil types. Results for story drift, story shear, and story displacement are compared between the shear wall and frame models. In general, the study found that the frame structure exhibited higher drift, shear, and displacement compared to the shear wall structure. Values increased with higher seismic zone and poorer soil type. Shear walls provide better seismic performance than frames for structures with irregularities.
IRJET- A Research on Comparing the Effect of Seismic Waves on Multistoried Bu...IRJET Journal
The document compares the effect of seismic waves on multistoried buildings with and without shear walls and flanged concrete columns. Three 10-story building models are analyzed using STAAD Pro: Model 1 without seismic resisting structures, Model 2 with concentrically located shear walls along the exterior, and Model 3 with flanged concrete columns along the exterior. Model 2 and 3 experience approximately 10% less lateral force and base shear compared to Model 1. Introducing shear walls or flanged columns improves seismic performance by increasing stiffness and reducing displacements, stresses, and forces in the building. While shear walls provide the greatest stability, flanged columns also enhance seismic resistance and may be more economical for some applications.
Structural Analysis of Unbonded Post-Tensioned Shear WallIRJET Journal
1) The document analyzes the structural behavior of unbonded post-tensioned shear walls through modeling and analysis in ETabs.
2) It compares the performance of a building without a shear wall, with a reinforced concrete shear wall, and with a prestressed shear wall in terms of displacement, story drift, and steel requirement.
3) The results show that the prestressed shear wall reduces displacement by over 50%, story drift by nearly 20%, and steel requirement by nearly 40% compared to the building without a shear wall.
Wind Analysis of Tall Building with Floor DiaphragmIRJET Journal
The document analyzes wind loading on tall buildings with different geometric plans (square, pentagonal, hexagonal) and with or without rigid floor diaphragms. 24 building models were analyzed considering different floor heights, geometric plans, and presence/absence of rigid diaphragms. Responses like bending moment, shear force, and displacements were compared. Buildings with rigid diaphragms showed reduced bending moment, shear force, and displacements compared to buildings without diaphragms. Square plan buildings performed better than pentagonal or hexagonal plans when using rigid diaphragms.
Lateral Load Analysis of Shear Wall and Concrete Braced Multi-Storeyed R.C Fr...ijsrd.com
Generally RC framed structures are designed without regards to structural action of masonry infill walls present. Masonry infill walls are widely used as partitions. These buildings are generally designed as framed structures without regard to structural action of masonry infill walls. They are considered as non- structural elements. RC frame building with open first storey is known as soft storey, which performs poorly during strong earthquake shaking. Past earthquakes are evident that collapses due to soft storeys are most often in RC buildings. In the soft storey, columns are severely stressed and unable to provide adequate shear resistance during the earthquake. . In this study, 3D analytical model of twelve storeyed buildings have been generated for different buildings Models and analyzed using structural analysis tool 'ETABS'. To study the effect of infill, ground soft, bare frame and models with ground soft having concrete core wall and shear walls and concrete bracings at different positions during earthquake; seismic analysis using both linear static, linear dynamic (response spectrum method) has been performed. The analytical model of the building includes all important components that influence the mass, strength, stiffness and deformability of the structure.
Importance of Modeling of Masonry Infill and Effect of Soft Storey on Seismic...ijsrd.com
RC framed high rise buildings are generally designed without considering the structural action of masonry infill walls present. These walls are widely used as partitions and considered as non-structural elements. But they affect both the structural and non-structural performance of the RC buildings during earthquakes. RC framed building with open first storey is known as soft storey, which performs poorly during earthquakes. A similar soft storey effect can also appear, at intermediate storey level if a storey used as a service storey. The soft storey located in the lower part of the high rise building especially the ground storey is undesirable as it attracts severely large seismic forces. At the same time, the soft storey located in the upper part of the high rise building does not significantly affect. To study the effect of masonry infill and its modeling technique with different soft storey level, 6 Models of R C framed building were analyzed with two different techniques of modeling of masonry infill with one type of shear wall when subjected to earthquake loading. Technique one is showing more strength and stiffness than two and an attempt is made to develop relationship between strength and stiffness ratios for linear trend line.
IRJET- Study of Behaviour of Multi-Storey Building with Shear WallsIRJET Journal
1) Shear walls are structural members designed to resist lateral forces like those caused by earthquakes. They improve a building's stiffness and ability to resist earthquake shaking.
2) The document studies the performance of different positions of shear walls in multi-storey buildings subjected to seismic loads. Shear walls placed along the periphery of the building were found to most efficiently resist seismic loads.
3) Shear walls improve a building's performance during earthquakes by reducing lateral displacement, decreasing vibration period, and limiting induced moments and torsion effects from seismic forces. When properly designed and constructed, shear walls provide effective seismic resistance.
COMPARATIVE STUDY ON SEISMIC ANALYSIS OF CONVENTIONAL SLAB AND FLAT SLAB STRU...IRJET Journal
This document presents a comparative study on the seismic analysis of conventional slab and flat slab structures with and without shear walls using ETABS software. A 12-story building model with a conventional slab, flat slab without shear walls, and flat slab with shear walls at corners is created. The buildings are analyzed for different seismic zones and soil types according to Indian standards. Results for parameters like story displacement, story drift, story stiffness, and natural period are presented in graphs for each model and seismic zone using both the equivalent static method and response spectrum method. The study found that the flat slab structure with shear walls performed best with lower displacement, drift, and higher stiffness. Increasing the seismic zone was found to increase displacement and drift while keeping stiffness
Analysis of High Rise Multistoried Building With and without Shear Wall By Re...IRJET Journal
This document analyzes a 15-story residential building with and without shear walls using response spectrum analysis. It finds that placing symmetrically positioned shear walls improves the building's performance in terms of seismic parameters like story drift, displacement, forces and stiffness compared to a building without shear walls. The building is modeled in ETABS software and seismic parameters are compared for models with and without shear walls in zone 3. Results show that shear walls enhance the building's lateral stiffness and resistance to earthquake forces.
STUDY OF COMPARISON BETWEEN TWO ATRIUM BUILDINGS IN VARIOUS SEISMIC ZONES WIT...IRJET Journal
The document compares two 9-story atrium buildings with and without shear walls under different seismic zones. Model 1 does not include shear walls, while Model 2 includes shear walls at each corner. Both models are subjected to dead, live, wind and seismic loads based on Indian codes. Results show that the inclusion of shear walls significantly reduces maximum nodal displacement and bending moment. Across seismic Zones II through V, the building with shear walls experienced 25-40mm lower displacement and 275-372kN lower bending moment compared to the building without shear walls. Including appropriately placed shear walls improves the stability, stiffness and seismic performance of high-rise buildings.
IRJET- Comparative Analysis of Multi-Storied Building with and without Shear ...IRJET Journal
This document presents a comparative analysis of the seismic behavior of an 11-story building model with and without shear walls. The building model is analyzed using STAADPRO software for different locations and thicknesses of shear walls. Results show that the presence of shear walls, particularly at corner locations and with greater thickness, significantly improves the building's seismic performance by reducing displacements, story drift, and column forces. The study concludes that properly locating shear walls can substantially decrease lateral drift and displacement experienced by the building during an earthquake.
Influence of Modeling Masonry Infill on Seismic Performance of Multi-Storeyed...ijsrd.com
Masonry infilled RC frames are the most common type of structures used for multi-storeyed constructions in the developing countries, even in those which are located in seismically active regions also. Masonry infill walls are mainly used to increase the stiffness and strength of R C framed buildings. R C framed building with open first storey is known as soft storey, which performs poorly during earthquakes. A similar soft storey effect can also appear top storey level if it is used as service storey. The soft storey located in the upper part of the multistorey building does not significantly affect. To observe the effect of masonry infill panel, it is modeled as an equivalent double diagonal strut. In this study 7 models are taken were analyzed with two different techniques of modelling of masonry infill wall with L type of shear wall when subjected to earthquake loading. The results of masonry infill show more stiffness than the strut modeling technique. It is observed that, providing infill wall and shear wall improves earthquake resistant behavior of the structure and also the effect of water pressure, an attempt is made to develop relationship between strength and stiffness ratios for linear trend line.
Earthquake Resistant Design of Low-Rise Open Ground Storey Framed BuildingIJMER
This document discusses the earthquake resistant design of low-rise buildings with open ground stories (OGS). It aims to study the effect of infill wall stiffness and support conditions on the seismic behavior of OGS buildings. A 4-story reinforced concrete building located in seismic zone 5 of India is modeled with and without considering infill walls. Both linear and nonlinear analyses are performed. The results show that considering infill wall stiffness reduces seismic demands on ground story columns and beams compared to models without infills. A force amplification factor of 2.5 applied to the ground story in current standards is found to be too conservative for low-rise OGS buildings. Support conditions also influence the building response, with fixed supports resulting in greater period shifts
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.
Effectiveness of Shear Wall-Frame Structure Subjected to Wind Loading in Mult...ijceronline
This document analyzes the effectiveness of different shear wall configurations in an 8-story building subjected to wind loading. Three models are analyzed: an exterior wall frame case (Model 1), a middle interior wall frame case (Model 2), and a core shear wall case (Model 3). Results show that Model 3 performed best, with the lowest maximum lateral deformation, storey drift index, bending moment, and shear forces. Model 3 also had the core shear wall taking on the majority of loads. The document concludes that Model 3 provided the most lateral stiffness and rigidity to the structure against wind loads.
Effect of Backstay on Tall Structures with PodiumIRJET Journal
This document discusses a study on the effect of backstay on tall structures with podiums. It aims to understand the realistic behavior of multiple tower structures with a common podium under lateral loads. Different models are analyzed in ETABS by varying the height and number of towers, and presence of shear walls in the podium. Both equivalent static method and response spectrum method are used for seismic analysis. Results are compared to understand the effect of backstay and shear reversal with changes in podium height and number of towers. The study follows guidelines in Indian Standard IS:16700 for modeling and analysis of podium-type tall structures.
EFFECT OF POSITIONING OF RC SHEAR WALLS OF DIFFERENT SHAPES ON SEISMIC PERFOR...IAEME Publication
The buildings situated on hill slopes in earthquake prone areas are generally irregular, torsionally coupled. Hence, subjected to severe damage when affected by earthquake ground motion. Such buildings have mass & stiffness varying along the vertical & horizontal planes, resulting the center of mass & center of rigidity do not coincide on various floors, they demand torsional analysis, in addition to lateral forces under the action of earthquakes. This study compels with a studies on the seismic behavior of buildings resting on sloping ground with a shear walls. It is observed that the seismic behavior of buildings on sloping ground differ from other buildings.
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Building RAG with self-deployed Milvus vector database and Snowpark Container...Zilliz
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Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...
Bz32480485
1. Alfa Rasikan, M G Rajendran / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 2, March -April 2013, pp.480-485
Wind Behavior of Buildings with and without Shear Wall
Alfa Rasikan*, M G Rajendran **
*(Department of Civil Engineering, Karunya University, Coimbatore)
** (Department of Civil Engineering, Karunya University, Coimbatore)
ABSTRACT
Shear walls are specially designed building. Shear wall frame interaction systems are
structural walls which are incorporated in very effective in resisting lateral forces. Abdur
buildings to resist lateral forces that are Rahman, Saiada Fuadi Fancy and Shamim Ara
produced in the plane of wall due to wind, Bobby (3) have discussed the analysis of drift due to
earthquake and flexural members. This paper wind loads and earthquake loads on tall structures.
presents the study and comparison of the The drift on high rise structures has to be considered
difference between the wind behavior of as it has a notable magnitude. B. Dean Kumar and
buildings with and without shear wall using B.L.P. Swami (4) have discussed the wind effects
Staad pro. on tall building frames. The wind pressures
computed by the gust effectiveness factor method
Keywords – Shear wall, STAAD PRO, Wind are rational and realistical. Hence it is an important
behavior and valid point to be considered for the design of
very tall buildings. T. Kijewski and A. Kareem (5)
1. INTRODUCTION have discussed the full-scale study of the behavior
Due to the interaction of the earth while of tall buildings under winds. Figure 1 shows the
rotating the majority of the heat falls up on the two functions of shear wall.
middle of the equator and only less towards the
north and south pole of the earth. The warm air rises
on the equator and the cold air is pulled in from the
ice caps .This spreads warmth across the globe
which results in moving air patterns. The
characteristics of wind are galloping, gust, ovalling,
flutter, eddies and buffeting.
he wind flow interacts only with the
external shape of the structure for static structure.
The deflections under the wind load will not be
significant when the structure is very stiff. Hence
the structure is said to be static. For dynamic
structures there is an additional interaction with the
motion of the structure. Due to the action of natural
wind, gusts and other aerodynamic force which will
affect the tall buildings continuously.
Shear wall mainly resists two types of
forces: shear forces and uplift forces. To resist the
horizontal earthquake forces, shear wall should
Fig.1.Functions of shear wall
provide the necessary lateral strength and to prevent
the roof or floor above from excessive side-sway,
The staad model of the 15 storey
shear walls also should provide lateral stiffness.
building without shear wall in figure 2 and with
Shear walls are classified into different types. They
shear wall in figure 3 have been considered to carry
are coupled shear wall, core type shear wall, column
out the study. Also 20 storey building without shear
support shear wall, frame wall with infill frame,
wall in figure 4 and with shear wall in figure 5 have
rigid frame shear wall etc.
been considered to carry out the study. STAAD
Anshuman. S, Dipendu Bhunia and Bhavin
PRO 2010 software has been considered for this
Ramjiyani (1) have discussed the solution of shear
study. The preliminary data for 15 storey building
wall in multi storey building. By providing shear
and 20 storey building are shown in table 1 and
wall in some frames, the top deflection was reduced
table 2 respectively.
to permissible deflection. Also it has been observed
Figure 2 shows the staad model of the 15 storey
that both bending moment and shear force in some
building without shear wall.
frames were reduced after providing the shear wall.
P. S. Kumbhare and A. C. Saoji (2) have
discussed the effectiveness of changing reinforced
concrete shear wall location on multi-storeyed
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2. Alfa Rasikan, M G Rajendran / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 2, March -April 2013, pp.480-485
Table 1 gives the preliminary details of the 15
storey building.
Table 1: Preliminary Data
Height of each storey 4.0 m
Number of storey Fifteen (G+14)
Shear wall thickness 200 mm
Grade of concrete and M20 and Fe 415
steel
Size of beam 300 x 400 mm2
Size of column 600 x 800 mm2
Location Coimbatore
The 15 storey building is located in Coimbatore.
Therefore the wind velocity of the building is 39
m/s. Figure 4 shows the staad model of the 20
storey building without shear wall.
Fig.2. Staad model of the 15 storey building without
shear wall
Figure 3 shows the staad model of the 15 storey
building with shear wall.
Fig.4. Staad model of the 20 storey building without
shear wall
Fig.3.Staad model of the 15 storey building with
shear wall
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3. Alfa Rasikan, M G Rajendran / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 2, March -April 2013, pp.480-485
Figure 5 shows the staad model of the 20 storey 3. DEFLECTION DIAGRAM
building with shear wall. Figure 6 shows the deflection diagram of 15 storey
building without shear wall.
Fig.6. Deflection diagram of 15 storey building
Fig.5.Staad model of the 20 storey building with
without shear wall
shear wall
Figure 7 shows the deflection diagram of 15 storey
building with shear wall.
Table 2 gives the preliminary details of the 20
storey building.
Table 2: Preliminary Data
Height of each 4.0m
storey
Number of storey Twenty(G+19)
Shear wall thickness 200 mm
Grade of concrete M20 and Fe 415
and steel
Size of beam 400 x 600 mm2
Size of column 600 x 800 mm2
Location Coimbatore
The 20 storey building is located in Coimbatore.
Therefore the wind velocity of the building is 39
m/s.
Fig.7. Deflection diagram of 15 storey building with
shear wall
2. LOADING CONSIDERATION
Dead load and live load have been taken as
per IS 875 (Part 1) (1987) and IS 875 (Part 2)(1987)
respectively. Wind load calculation has been done
based on the IS 875 (Part 3) (1987).
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4. Alfa Rasikan, M G Rajendran / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 2, March -April 2013, pp.480-485
Figure 8 shows the deflection diagram of 20 storey Table 3: Displacement of 15 storey building with
building without shear wall. and without shear wall
Storey Displacement Displacement of
Numbers of 15 Storey Building 15 Storey
without Building with
Shear Wall (mm) Shear Wall (mm)
Storey 15 145.012 115.751
Storey 14 142.332 112.820
Storey 13 138.939 109.411
Storey 12 134.266 105.124
Storey 11 128.200 99.883
Storey 10 120.709 93.663
Storey 9 111.796 86.464
Storey 8 101.491 78.311
Storey 7 89.849 69.241
Storey 6 76.958 59.312
Storey 5 62.961 48.614
Storey 4 48.108 37.303
Storey 3 32.868 25.676
Storey 2 18.160 14.366
Fig.8. Deflection diagram of 20 storey building
without shear wall Storey 1 5.842 4.730
Figure 9 shows the deflection diagram of 20 storey
building with shear wall. Table 3 gives the displacement of 15 storey building
with and without shear wall for each storey level.
4.2. 20 STOREY BUILDING
Comparison between displacement of 20 storey
building without shear wall and with shear wall at
each floor level are shown in table 4.
Table 4: Displacement of 20 storey building with
and without shear wall
Storey Displacement of Displacement of
20 Storey 20 Storey
Numbers Building without Building with
Shear Wall (mm) Shear Wall (mm)
Storey 133.650 114.130
20
Storey 130.986 110.642
19
Storey 129.435 108.048
18
Storey 127.342 105.083
Fig.9. Deflection diagram of 20 storey building with
shear wall 17
Storey 124.492 101.669
16
4. RESULT AND DISCUSSION
Storey 120.907 97.803
4.1. 15 STOREY BUILDING
Comparison between displacement of 15 15
storey building without shear wall and with shear Storey 116.610 93.497
wall at each floor level are shown in table 3. 14
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5. Alfa Rasikan, M G Rajendran / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 2, March -April 2013, pp.480-485
Storey 111.609 88.747 160
13
Storey 105.916 83.564 140
Top storey displacement (mm)
12
Storey 99.543 77.958 120
11 100
Storey 92.505 71.949 Without shear
10 80 wall
Storey 9 84.823 65.558
60 With shear wall
Storey 8 76.518 58.812
40
Storey 7 67.615 51.738
20
Storey 6 58.144 44.370
0
15 storey building with and without shear
Storey 5 48.147 36.744 wall
Storey 4 37.690 28.908
Fig.10. Top storey displacement of 15 storey
Storey 3 26.901 20.925 building with and without shear wall
Figure 10 shows that 15 storey building without
Storey 2 16.096 12.927 shear wall results higher top storey displacement
when compared to 15 storey building with shear
Storey 1 6.155 5.325
wall.
The top storey displacements of 20 storey building
Table 4 gives the displacement of 20 storey building without shear wall and with shear wall are shown in
with and without shear wall for each storey level. figure 11.
140
4.3. TOP STOREY DISPLACEMENTS OF
Top storey displacement(mm)
BUILDING WITH AND WITHOUT SHEAR 135
WALL 130
Comparison between top storey
displacement of 15 storey building and 20 storey 125
building without shear wall and with shear wall are without shear
120 wall
shown in table 5.
115 with shear wall
Table 5: Top storey displacement of building with
and without shear wall 110
Building Top Storey Top Storey 105
Model Displacement of Displacement of
Building without Building with 100
Shear Wall (mm) Shear Wall(mm) 20 storey building with and without shear
wall
15 Storey 145.012 115.751
Building Fig.11. Top storey displacement of 15 storey
20 Storey 133.650 114.130 building with and without shear wall
Building
Figure 11 shows that 20 storey building without
Table 5 gives the top storey displacement of both 15 shear wall results higher top storey displacement
storey and 20 storey building with and without shear when compared to 20 storey building with shear
wall. wall.
The top storey displacement of 15 storey building
without shear wall and with shear wall are shown in 5. CONCLUSION
figure 10. A 15 storey building and 20 storey building
were analysed with shear wall and without shear
wall and the displacements of the buildings with
shear wall and without shear wall were compared.
From the above results it is seen that the
displacement for a 15 storey building with shear
wall was 20.18% less than the 15 storey building
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6. Alfa Rasikan, M G Rajendran / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 2, March -April 2013, pp.480-485
without shear wall and the displacement for 20
storey building with shear wall was 14.6% less than
the 20 storey building without shear wall. Hence it
is found that building with shear wall resists wind
load effectively.
REFERENCES
[1] Anshuman. S, Dipendu Bhunia , Bhavin
Ramjiyani, Solution of Shear Wall
Location in Multistorey Building,
International Journal of Civil and
Structural Engineering,Volume 2, No 2,
2011,493-506.
[2] P. S. Kumbhare, A. C. Saoji, Effectiveness
of Changing Reinforced Concrete Shear
Wall Location on Multi-storeyed Building,
International Journal of Engineering
Research and Applications, Vol. 2, Issue 5,
September- October 2012, 1072-1076.
[3] Abdur Rahman, Saiada Fuadi Fancy,
Shamim Ara Bobby, Analysis of drift due
to wind loads and earthquake loads on tall
structures by programming language C,
International Journal of Scientific and
Engineering Research, Vol. 3, Issue 6,
June 2012.
[4] B. Dean Kumar and B.L.P. Swami, Wind
effects on tall building frames-influence of
dynamic parameters, Indian Journal of
Science and Technology, Vol. 3, No.
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[5] T. Kijewski and A. Kareem, Full-scale
study of the behavior of tall buildings
under winds, NatHaz Modeling
Laboratory, Department of Civil
Engineering and Geological Sciences,
University of Notre Dame, Notre Dame, IN
46556.
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