Abstract
In recent years, the construction of skyscrapers has been on the rise to overcome the shortage of land. These buildings are subject to an external lateral force, such as an earthquake and wind pressure. Pushover analysis (POA) has been broadly used in predicting the earthquake response of structures, and shear walls have been shown to be lateral drag elements. Therefore, in the present work, the effect of placing a shear wall on the periphery symmetrically, the periphery asymmetrically and in the center of the building is performed using the ETABS software. Using the response spectrum methodand thetime history method, a dynamic analysis is performed. Responses such as floor shear, floor displacement, and lateral floor shifts due to seismic forces are evaluated for various locations of the shear wall. According to the results and analysis, the shear wall on the symmetrical periphery of the structure is reducing the displacement and deviation of the floor compared to other cases.
Highlights
The need for shelter for densely populated cities or urban area, where land cost is more and additional horizontal extension is not possible due to lack of space availability, so the only solution is vertical extension
Linear static analysis and Response spectrum analysis under gravity and seismic loads were performed on all four models by using ETABS software
Linear analysis-based results are shown in Figure 7 and Figure 8 and its indicates the displacements of the each storey in X and Y directions, respectively as indicted in Model 1 to 4
Summary
The need for shelter for densely populated cities or urban area, where land cost is more and additional horizontal extension is not possible due to lack of space availability, so the only solution is vertical extension. Reinforced concrete (RC) buildings often have vertical plate-shaped reinforced concrete walls called shear walls, as well as slabs, beams and columns (Lee and Mosalam 2005). Shear walls are like wide vertically oriented beams that carry seismic loads to the foundations of buildings. Shear walls provide high strength and rigidity to buildings in the path of their direction, which considerably reduces the lateral swing of the building and diminish damage to the building structure and its contents. If they are planned in one direction only, it is essential to provide a suitable grid or network of columns and beams in the vertical plane (moment resistant frame) along the other direction to resist the effects of strong earthquakes. The structure is evaluated according to the seismic code IS 1893: 2002 by linear static analysis and dynamic analysis using the ETABS software
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