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Abstract
Current research study consists of determining the optimum location of the shear wall to get the maximum structural efficiency of a reinforced concrete frame building. It consists of a detailed analysis and design review of a seven-story reinforced concrete building to understand the effect of shear wall location on the response of reinforced concrete structures when subjected to different earthquake forces. Three trail locations of shear walls are selected and their performance is monitored in terms of structural response under different lateral loads. Required objectives are achieved by obtaining design and construction drawings of an existing reinforced concrete structure and modeling it on Finite Element Method (FEM) based computer software. The structure is redesigned and discussed with four different configurations (one without shear wall and three with shear walls). Main framing components (Beams, Columns and Shear walls) of the superstructure are designed using SAP 2000 V. 19.0 whereas substructure (foundation) of RC building was designed using SAFE. American Concrete Institute (ACI) design specifications were used to calculate the cracked section stiffness or non-linear geometrical properties of the cracked section. Uniform Building Code (UBC-97) procedures were adopted to calculate the lateral earthquake loading on the structures. Structural response of the building was monitored at each story level for each earthquake force zone described by the UBC-97. The earthquake lateral forces were considered in both X and Y direction of the building. Each configuration of shear wall is carefully analyzed and effect of its location is calibrated by the displacement response of the structure. Eccentricity to the lateral stiffness of the building is imparted by changing the location of shear walls. Results of the study have shown that the location of shear wall significantly affects the lateral response of the structure under earthquake forces. It also motivates to carefully decide the center of lateral stiffness of building prior to deciding the location of shear walls.
Highlights
Concrete structures are becoming popular in Saudi Arabia because of the rapid increase in the population
It consists of a detailed analysis and design review of a seven-story reinforced concrete building to understand the effect of shear wall location on the response of reinforced concrete structures when subjected to different earthquake forces
After analyzing the test results, it is found that presence of the shear wall in the buildings plays a vital role in reducing the displacements and resisting the seismic forces in case of an earthquake event
Summary
Concrete structures are becoming popular in Saudi Arabia because of the rapid increase in the population. An engineer should consider the self-weight, the load of the people that will inhabit the building with machinery, furniture, and appliances, but, should consider the extent of lateral forces that the building is expected to face in the rest of his life. In this regard, earthquake forces play a vital role and most of the RC structures are highly vulnerable to the earthquakes due to higher self-weight and has shown higher destruction in the past [1]. Each configuration of RC frame building and the shear wall was subjected to earthquake forces based upon UBC seismic zone of 2A to 4. Out of four building models, one was without shear wall (case-1) whereas the other three models carry the different location of shear walls (case-2, case-3 and case-4)
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