scholarly journals Effect of Location of Shear wall on Torsional Performance of Symmetric and Asymmetric High Rise Building

2021 ◽  
Vol 9 (VI) ◽  
pp. 5237-5243
Author(s):  
Hridya. K
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Lateral Loads ◽  
Base Shear ◽  
Flat Slab ◽  
High Rise ◽  
High Rise Building ◽  
Wide Range ◽  
The Cost ◽  
Post Tensioned

Torsion force is a load that is a applied to a building through torque. The torque applied creates a shear stress. If a torsion force is large enough, it can cause a building to undergo a twisting action. The main aim of the project is to study the effect of location of shear wall on torsional performance of symmetric and asymmetric high-rise building ,post tensioned slabs are being used in the construction of building hence the thesis also analyze these post tensioned slab structures by changing shear wall configuration. Post tensioned slab structures have weak resistance to lateral loads. so to provide stiffness to structures against lateral forces shear walls are used. A study of 30 storey building in zone III, is considered and determine various parameters like base shear, storey drift, and storey displacement.post-tensioning is a mature technology as it provide efficient, economic and elegant structural solutions for a wide range of applications. Post-tensioned flat slab could be a better option compared to RCC flat slab, in respect of the cost of project and time of construction. ETABS 2017 software is used for the analysis.

scholarly journals COMPUTATIONAL ASSESSMENT FOR SEISMOLOGICAL PERFORMANCE OF MULTISTOREY FLAT SLAB STRUCTURES WITH (AT SPECIFIC POSITIONS) AND WITHOUT SHEAR WALLS

2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Shaikh Jafar Shaikh Ismail ◽  
L. G. Patil
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Lateral Stiffness ◽  
Lateral Loads ◽  
Dead Load ◽  
Flat Slab ◽  
Variable Parameters ◽  
High Rise ◽  
Main Factors ◽  
Seismic Investigation

In present era, there is a huge scarcity of vacant land led to the development of the high rise structures. For the construction of high rise buildings, normal R.C.C. system is not suitable. These problems can overcome by using flat slab system along with shear wall arrangements. It is very essential that the shear wall position should be appropriate in structure so as to achieve the lateral stiffness and solid structure against lateral loads. In this work, two main factors i.e. with drop panels and without drop panels have been considered for 12 storey structures. In each factor 5 models of various locations of shear wall is taken for consideration. For stabilization of variable parameters such as storey displacement, storey stiffness and storey shear etc the seismic investigation & design of structures had carried out in software ETABS. After performing seismic investigation & design of all the structures, result shows that if we provide shear wall at incorrect or inappropriate locations then it will only increase the dead load and cost of the structure. So the final outcomes we have achieved is to provide shear walls at desired position where lateral loads are more predominantly acting on the structures

scholarly journals Nonlinear Behavior of Flat Slab using Shear Wall

2019 ◽  
Vol 8 (12) ◽  
pp. 2482-2485
Keyword(s):  
Concrete Slab ◽  
Structural Parameters ◽  
Shear Walls ◽  
Shear Wall ◽  
Shear Capacity ◽  
Roof Displacement ◽  
Lateral Loads ◽  
Base Shear ◽  
Reinforced Concrete Slab ◽  
Flat Slab

Flat slab is a reinforced concrete slab supported directly by concrete columns without the use of beams .However; in multi-storey buildings it has weak resistance to the lateral loads. Hence this work is concerned to decrease the damage under lateral loading and to minimize the displacement. Shear wall are used to provide stability to structures from lateral loads. The aim of the present study is to analyze effect of shear wall and perimeter beam for flat slab building, and also effectiveness of core shear wall. For present work five models are studied 1) conventional slab building 2) simple flat slab building considered without any drop and column head 3) flat slab with drop building is considered without column head 4) flat slab with drop with perimeter beam building 5) flat slab with perimeter beam and shear wall buildings, each of plan size 25mX25m are selected. For stabilization of structural parameters, shear wall are provided. The seismic parametric studies comprise of roof displacement, base shear, and sequence of hinge formation .from study it concluded that the shear walls significantly increases the base shear capacity and reduces roof displacement and also getting good Performance

scholarly journals Evaluation of Steel Plate Shear Wall Performance with Different Sections and Arrangements of Stiffeners and its Effect on Project Management during Construction and Improvement of the Building

2021 ◽  
Vol 11 (1) ◽  
pp. 6043-6063
Author(s):  
Ali Jafarian ◽  
Seyed Babak Jafarian
Keyword(s):  
Steel Plate ◽  
Nonlinear Dynamic Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Economic Benefits ◽  
Lateral Loads ◽  
Steel Plate Shear Wall ◽  
High Rise ◽  
Earthquake Force ◽  
The Future

Considering the increase in the current construction process and the future needs of Iran, the necessity to use high-rise buildings for reduction in urbanization costs and optimal use of land will be inevitable in the future. The performance of steel plate shear wall system as a modern global system, which has an effective application in high-rise buildings and also brings economic benefits compared to previous systems, is evaluated in this study. Steel Plate Shear Walls (SPSW) are a new type of system resistant to wind and earthquake lateral loads, which dates back to the 1970s. In this research, eight samples of shear wall with various stiffening arrangements and sections with ST37 and ST52 alloys are modeled. To evaluate the nonlinear dynamic analysis, the samples are subjected to the San Fernando earthquake force and are modeled and analyzed by ABAQUS software based on the finite element theory. The results of analyzing the samples indicate better performance of the system with stiffener in both vertical and horizontal directions. Also, the use of sections with ST52 alloy has improved the performance of the shear wall by approximately 40%.

scholarly journals Influence of Shear Wall on Seismic Response of a Structure

2021 ◽  
Vol 9 (9) ◽  
pp. 1054-1060
Author(s):  
Siddhesh Bisane
Keyword(s):  
Structural Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Main Concern ◽  
Structural Members ◽  
Lateral Loads ◽  
Comprehensive Understanding ◽  
High Rise ◽  
Story Drift ◽  
Wall Following

Abstract: Structural analysis is the science of determining the effects of different loads on structures. Structural stability and stiffness are a main concern in any high-rise structures. Shear walls are structural members that are mainly responsible for resisting lateral loads predominant on structures. They are mainly responsible to increase the stiffness, reduce story drift and displacement. In order to have a comprehensive understanding about the contribution of shear wall, following research is carried out. This research involves comparing two G+16 structures; one without a shear wall and one with it. The structure has 4 bays of 3m each along X direction and Z direction. In this, we will see how shear wall resists lateral sway and reduces story drift and increases stiffness. As the height increases, the shear wall absorbs more lateral load than the frame. The software to be used for analysis is STAADPro. Keywords: STAADPro, Stiffness, storey displacement, storey drift.

scholarly journals Effect of Shear Wall on RC Building of Varying Heights

2019 ◽  
Vol 8 (12) ◽  
pp. 766-770
Keyword(s):  
Aspect Ratio ◽  
Response Spectrum ◽  
Shear Walls ◽  
Shear Wall ◽  
Seismic Zone ◽  
Lateral Loads ◽  
Base Shear ◽  
Aspect Ratios ◽  
Rc Building ◽  
The Comparative Study

Earthquake is an unexpected and expensive disaster for both livelihood and economy. In the modern day construction, there has been a lot of importance to make the structure resistant against lateral loads for multi storied building. Shear walls are an option of lateral load resisting system. The Concept of designing shear wall is to provide building structure with sufficient strength and deformation capacity to sustain the demands imposed by lateral loads with adequate margin of safety. The study focuses on effect of shear wall on R.C. building at different heights. For this purpose five models of different heights 15m, 30m, 45m, 60m and 75m and with different aspect ratios of 1.33, 0.66, 0.44, 0.33 and 0.26 respectively have been considered. All the models were designed for seismic zone V. For analysis purpose response spectrum method of analysis is considered as per IS: 1893-2002. The comparative study has been done for base shear, storey displacement, storey drift and storey stiffness. Utilization of shear walls when placed at corners of the building of low aspect ratio in high rise buildings is more effective compared to the low rise buildings of higher aspect ratio, as it gives the larger base shear and lesser displacement. The storey stiffness and storey drift is greatly improved when shear wall is placed at corners of the building

scholarly journals Seismic behaviour of post-tensioned concrete shear wall: a review

2021 ◽  
Vol 10 (1) ◽  
pp. 1-11
Author(s):  
Sneha Benoy ◽  
Asha Joseph
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Primary Objective ◽  
Critical Study ◽  
Seismic Behaviour ◽  
High Rise ◽  
Wall Construction ◽  
Strength And Stiffness ◽  
Integral Feature ◽  
Post Tensioned

Shear walls are specifically meant to withstand lateral forces exerted by either wind or earthquake loads on a structure. Due to their superior strength and stiffness, shear walls have been an integral feature of mid-rise and high- rise structures over the past two decades. Various studies have been performed in this field. Usage of post-tensioned tendons in the traditional shear wall is one of the major advancements in recent times so as to increase the stiffness and reduce the damage incurred by destructive earthquakes. The key advantage of post-tensioned shear walls is the potential to re-centre after a devastating earthquake which is lacking in conventional reinforced concrete (RC) shear walls that rely on yielding creating large deformations. Moreover, compared with conventional shear wall construction, post-tensioned shear walls can reduce the use of vertical mild steel reinforcement. This results in materials being used more effectively and eliminates congestion. This paper seeks to review and analyze the research studies based on post- tensioned shear wall focusing on works published within the last decade. Firstly, the benefits of using post-tensioned shear walls in seismically active areas are illustrated. The behaviour and parameters controlling the performance of post-tensioned shear walls are then studied. A critical study of the factors responsible for the performance of post- tensioned shear wall is the primary objective of this review. Keywords- Shear Wall, Post-Tensioning, Energy-Dissipation, Self-Centering

scholarly journals Seismic Response of High Rise Building with Openings in Shear Walls

2019 ◽  
Vol 8 (9) ◽  
pp. 3423-3426
Keyword(s):  
Seismic Analysis ◽  
Shear Walls ◽  
Small Towns ◽  
Seismic Zone ◽  
Base Shear ◽  
High Rise ◽  
High Rise Building ◽  
Gradual Development ◽  
Air Ventilation ◽  
Model C

Due to gradual development of metros and small towns and increasing population in India, the high rise buildings are constructed at a larger scale due to land scarcity and the commercial or cultural importance of a particular area. A high rise building should be architecturally viable and should have good light and air ventilation. In this project we compare and analyze the high rise buildings in three configurations.A high rise building is a structure which is more than 30m in height. In this project we consider a high rise building with story configuration of G+20. The three configurations of the high rise building are designed, configured and seismically analysed using ETABS software. Earthquake analysis in ETABS is carried out on Model (a)-Structure without a shear wall, Model (b)-Structure with shear walls and Model (c)-Structure with openings in shear walls resting in Type II soil and Type III seismic zone. The soil type and seismic zone considered for this project is specific for Amaravati the capital of Andhra Pradesh. Seismic analysis results for each configuration of the high rise building such as Base Shear, Time Period, Storey Drifts and Displacements are compiled and compared to find the suitable configuration of high rise structure.

scholarly journals Parametric Study of Buildings with and Without Shear Walls for Seismic Performance

2020 ◽  
Author(s):  
P.N. Pagare ◽  
P. R. Bhosale ◽  
A.P. Birar ◽  
V.D. Hayatnagarkar ◽  
D.C. Sawant
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Frame Structure ◽  
Dual Frame ◽  
Lateral Loads ◽  
Structural System ◽  
Soft Storey ◽  
High Rise ◽  
Seismic Shear ◽  
Earthquake Load

Shear walls are structural systems which provide stability to structures from lateral loads like wind, seismic loads. As shear wall resist major portions of lateral loads in the lowest portions of the buildings and the frame supports the lateral loads in the upper portions of the building which is suited for soft storey high rise building. The properties of these seismic shear walls dominate the response of the building and therefore, it is important to evaluate the seismic response of the walls appropriately. In this present study, main focus is to determine the solution for shear walls behavior in multi-storey building. Effectiveness of shear walls has been studied with the help of six different models. Model one is bare frame structural system, model two is dual frame structural system and model three is a complete shear wall structural system with internal walls in y-direction and model four is a similar model having internal shear walls in x-direction, model five is again a dual frame having columns at exterior and shear walls in interior placed in y-direction and model six is also an dual frame structure having columns at exterior and shear walls at interior placed in x-direction. An earthquake load is applied to a building of G+15 stories located in zone III, type of soil II and various other factors are considered. Parameters like displacement and storey drift are calculated in all the cases replacing column with shear walls and their locations.

Experimental and Theoretical Studies On High-Rise Building Structure With New Special-Shaped Shear Walls

2014 ◽  
Vol 578-579 ◽  
pp. 550-554
Author(s):  
Jian Xin Liu ◽  
Pei Li ◽  
Jie Shen ◽  
Mei Chun Zhu
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Experimental Results ◽  
Wall Structure ◽  
Building Structure ◽  
Concept Design ◽  
Element Analysis ◽  
High Rise ◽  
High Rise Building ◽  
Hydraulic Servo

On the basis of concept design that involves both structural and architectural performance, this paper puts forward a new reinforced concrete high-rise building structure with a new special-shaped shear walls, presents an experimental study of the seismic performance of the new special-shaped shear walls under low reversed cyclic loading using MTS electro hydraulic servo system. Compared with experimental results, a finite element analysis on this special-shaped shear wall structure, which considers the nonlinearity of concrete structure, is found suitable. It shows that the experimental results fairly confirms to the calculated values, which indicates that this new structure has advantages as good architectural function, big effective space, high overall lateral stiffness, fine ductility, advanced seismic behavior, etc.. That is, the close agreement between the theoretical and experimental results indicates the proposed shear wall structure has wide applications.

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