scholarly journals Effect of Shear wall Geometry on Ten Storey Building with Raft and Fixed base Foundation

2019 ◽  
Vol 9 (1) ◽  
pp. 205-208
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Soil Conditions ◽  
High Rise ◽  
Seismic Zones ◽  
Raft Foundation ◽  
Mat Foundation ◽  
Different Shapes ◽  
Wall Geometry ◽  
Storey Building

:Raft foundation is widely used for high-rise buildings where presence of shear wall is very common. Shear Wall resists a major portion of the lateral load of high-rise buildings. So, presence of shear wall on mat foundation causes significant change in pattern and intensity of loading on mat foundation. The present work involved an investigation of effect of shear wall geometry in different seismic zones with and without the presence of raft foundation. Multi storey building with ten storey is analysed for the storey drift, storey displacement and base shear. The analysis of building is done by response spectrum analysis. The different shapes of shear walls C,L,F,I with same plan area is considered. The effect of shear wall geometry is studied in zone II, zone III, zone IV, zone V. Loads and load combinations selected based on IS 456-2000 and IS 875-1987 code. Three types of soil conditions are considered typeI ,typeII, typeIII.Raft foundation is designed by meshing the slab into equal quadrilaterals.Assigning of area springs to the each quadrilateral.Meshing is done inorder to convert the infinite solution into finite solution.The different shapes of the shear walls is analysed in zone V with the raft foundation in type III.The results are compared with and without the raft foundation ,conclusions are drawn that the best shape of the shear wall suits in different seismic zones.

scholarly journals EFFICIENT THREE-DIMENSIONAL MODELLING OF HIGH-RISE BUILDING STRUCTURES

2013 ◽  
Vol 19 (6) ◽  
pp. 811-822 ◽  
Author(s):  
Mohammed Jameel ◽  
A. B. M. Saiful Islam ◽  
Mohammed Khaleel ◽  
Aslam Amirahmad
Keyword(s):  
Three Dimensional ◽  
Shear Walls ◽  
Shear Wall ◽  
Frame Structure ◽  
Building Structures ◽  
Structural Behaviour ◽  
High Rise ◽  
Structural Responses ◽  
Wall Openings ◽  
Storey Building

A multi-storey building is habitually modelled as a frame structure which neglects the shear wall/slab openings along with the inclusion of staircases. Furthermore, the structural strength provided by shear walls and slabs is not precisely incorporated. With increasing building height, the effect of lateral loads on a high-rise structure increases substantially. Inclusion of shear walls and slabs with the frame leads to improved lateral stiffness. Besides, their openings may play imperative role in the structural behaviour of such buildings. In this study, 61 multi-storey building configurations have been modelled. Corresponding analyses are performed to cope with the influence of shear walls, slabs, wall openings, masonry walls and staircases in addition to frame modelling. The finite element approach is used in modelling and analysis. Structural responses in each elemental combination are evaluated through equivalent static and free vibration analyses. The assessment reveals that inclusion of only slab components with frame modelling contributes trivial improvement on structural performance. Conversely, the presence of shear wall slabs with frame improves the performance noticeably. Increasing wall openings decreases the structural responses. Furthermore, it is not recommended to model staircases in addition to frame–slab–shear wall modelling, unless the effect of wall openings and slab openings is adequately considered.

Effects of openings on the seismic behavior and performance level of concrete shear walls

2019 ◽  
Author(s):  
Hossein Alimohammadi ◽  
Mostafa Dalvi Esfahani ◽  
Mohammadali Lotfollahi Yaghin
Keyword(s):  
Static Analysis ◽  
Cross Section ◽  
Seismic Behavior ◽  
Shear Walls ◽  
Shear Wall ◽  
Constant Cross Section ◽  
Added Resistance ◽  
Different Shapes ◽  
And Performance ◽  
Abaqus Software

In this study, the seismic behavior of the concrete shear wall considering the opening with different shapes and constant cross-section has been studied, and for this purpose, several shear walls are placed under the increasingly non-linear static analysis (Pushover). These case studies modeled in 3D Abaqus Software, and the results of the ductility coefficient, hardness, energy absorption, added resistance, the final shape, and the final resistance are compared to shear walls without opening.

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.

Analysis of Effective Location of Shear Wall for High Rise Building with U – Configuration

2021 ◽  
Vol 23 (2) ◽  
pp. 167-176
Author(s):  
Sekar Mentari ◽  
Rosi Nursani
Keyword(s):  
Lateral Displacement ◽  
Center Of Mass ◽  
Shear Walls ◽  
Shear Wall ◽  
Rotational Axis ◽  
Moment Frame ◽  
Earthquake Loads ◽  
High Rise ◽  
Live Loads ◽  
Special Moment Frame

Indonesia is one of the countries that is prone to earthquakes. In addition to the dead loads, superimposed dead loads, and live loads, the design of buildings in Indonesia must be concerned with earthquake loads. Installing shear walls in the building structure as the Special Moment Frame Dual System is one of a solution to withstand earthquake loads. However, the location of shear walls must be considered, especially in buildings with horizontal irregularities. This study aims to determine the optimum location of the shear walls in a 10-storey building that has U-configuration with dynamic earthquake loads. This research is a numerical simulation ran by modelling the structure with software. To know the effect of the shear wall’s location on a building, several variations of the shear wall configuration with different positions have been conducted. It can be seen the lateral displacement of each floor and the shear force are the response structure to withstand the dynamic earthquake loads. Shear walls that are located close to the center of mass of the building are the optimum variation because the position of the shear wall is the closest to the core area of the building, which is the rotational axis of the building.

Torsional Behavior of Irregular RC Building under Static and Dynamic Loading

2019 ◽  
Vol 969 ◽  
pp. 247-252
Author(s):  
S. Neelavathi ◽  
K.G. Shwetha ◽  
C.L. Mahesh Kumar
Keyword(s):  
Present Situation ◽  
Shear Wall ◽  
Reinforced Concrete Structure ◽  
High Rise ◽  
Time Period ◽  
Rc Building ◽  
Earthquake Load ◽  
Structural Irregularities ◽  
Static And Dynamic Loading ◽  
Storey Building

In the present situation the growth of population is increasing rapidly. In view of this, the development of the buildings are changing its dimension to high rise structures further having trends of structural irregularities. These kinds of irregularities in the structure cannot be avoided as it is more vulnerable to the seismic actions. The structure fails by the uneven moments created by the seismic actions because of the irregularities in the structure which is based on the parameters like storey drift, displacement, torsional effects etc., In this paper the effects of the torsional irregularity is studied and the failure has been minimized by adding necessary elements like shear wall and bracings where ever required. In Present study we have considered the 20 storey building of reinforced concrete structure which includes five models of different regular and irregular shaped structures which are subjected to earthquake load and are modeled by using ETABS version 9. Analysis results elaborate the parameters like displacement, time period, storey drift and comparisons of the results among the set of models.

A Stress Analytical Solution of Steel Reinforced Concrete Transfer Beam

2010 ◽  
Vol 163-167 ◽  
pp. 1329-1332
Author(s):  
Bin Liang ◽  
Meng Yang
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Shear Walls ◽  
Shear Wall ◽  
Nonlinear Finite Element ◽  
Nonlinear Finite Element Method ◽  
Element Calculation ◽  
Steel Reinforced Concrete ◽  
High Rise ◽  
Tension Member

The structural behavior of a steel reinforced concrete (SRC) transfer beam in high-rise building is studied in the paper. Mechanical properties and deformation characteristics between transfer beam and shear wall are analyzed by an analytic approach and the nonlinear finite element method. The stress analytical solutions for the SRC transfer beam are obtained and agree with finite element calculation data in an actual project. The results show that the beam can be as an eccentric tension member, meanwhile the performance of shear wall must be considered. And it also shows that the shear stress and vertical compressed stress must be considered in end both transfer beam and shear wall and there is interaction between the beam and the shear walls above. The results can be used to describe the behavior of the SRC transfer beam under complicated loads.

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

COMPARISON OF SHEAR WALLS AND MOMENT-RESISTING FRAMES IN EARTHQUAKE RESISTING BUILDINGS’ DESIGN

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Ahmad Sheikh Abdallah ◽  
Safwan Chahal
Keyword(s):  
Seismic Response ◽  
Tall Buildings ◽  
Shear Walls ◽  
Shear Wall ◽  
Structural Systems ◽  
Lateral Loads ◽  
Building Height ◽  
Seismic Zones ◽  
Prime Concern ◽  
Moment Resisting

The rapid growth of urban population and limited land space have greatly influenced the development of high-rise structures. Lateral loads have an important effect on the design as the building height increases. In order to resist lateral loads, safety and minimum damage should be the prime concern when designing tall buildings. To meet these requirements, the structure should have adequate lateral strength and lateral stiffness and sufficient ductility. Among the various structural systems, shear wall systems or moment resisting frame systems could be a point of choice for designers. Thus, it is important to review and observe the behavior of these systems under seismic effect. This study compared the seismic response of the above structural systems using a case study application at variable seismic zones (Zone 2B, Lebanon Zone, Zone 3, and Zone 4) and at different building stories (Eight and 12-story building). The seismic response is measured in term of time-period, maximum story displacement, maximum story drift, amount of steel and concrete needed. The outcome of this study portrayed that a shear wall system is more efficient in terms of cost and lateral load resistivity regardless of the building height and in the four seismic zones mentioned before.

The Interaction Analysis of the Middle-High Multi-Ribbed Composite Wall-Shear Wall Structures and Pile-Raft Foundation

2012 ◽  
Vol 170-173 ◽  
pp. 434-438 ◽  
Author(s):  
Yin Zhang ◽  
Cai Yang Zhang ◽  
Qi Zhang ◽  
Deng Fei Zhang
Keyword(s):  
Finite Element ◽  
Composite Structure ◽  
Interaction Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Finite Element Software ◽  
Raft Foundation ◽  
Wall Structures ◽  
Composite Wall ◽  
Composite Walls

Composite structure of mufti-ribbed composite walls-shear walls is composed of Multi-ribbed composite walls and shear walls which form a new kind of resisted load structure together. The paper analyzes the interaction of composite structure of mufti-ribbed composite walls-shear walls and pile-raft foundation with elastic-plastic mode of D-P. The load of superstructure is combined in the raft by substructure method, Finally，the paper obtain the distributed regularity of pile-raft foundation stress, strain by analyzing the influence of force performance which got by the large finite element software ANSYS analyzing interaction of superstructure and the pile-raft foundation-groundwork.

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