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Subject: Civil Engineering × Author: Ankit Kumar × Type: Thesis × Thesis Type: M.F.Sc ×
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    ThesisItemOpen Access
    Comparative study of irregular RC building with shear wall and steel bracing under seismic loading
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Ankit Kumar; Ankit Kumar; Vaneeta Devi; Vaneeta Devi
    The requirement of a multi-storey buildings is increasing day by day, but these buildings are highly affected by lateral loads. These lateral loads can be resisted by improving the lateral load resisting capacity of the building by the use of shear wall and steel bracing in the building at suitable locations. In the present study, the analysis of G+10 irregular RC building with shear wall and steel bracing at different locations in the building has been performed. The seismic forces are considered as per IS: 1893 (Part1) - 2016 and dead load, live load and other finishing loads are considered as per IS: 875 Part 1 and 2 in the analysis of various models considered in the present study. The building is considered in seismic zone V with damping ratio of 5%. Seismic analysis has been done using Response Spectrum method of dynamic analysis. 3D models of building with shear wall and steel bracing at different locations have been modelled and analyzed using “ETABS” software. The response parameters namely base shear, storey drift and torsion are critically analyzed to quantify the effects of shear wall and steel bracing at different locations in building. It has observed that base shear and torsion increases with the use of shear wall and steel bracing in irregular building as the stiffness of the building increases. The storey drift in the building decreases due to the increased stiffness. Since torsion is the most critical factor leading to major damage or complete collapse of buildings therefore, it is very essential that irregular buildings should be carefully analysed and designed for torsion. The performance of considered irregular building for stipulated sizes with shear wall is found better than steel bracing systems. Shear walls are definitely good mechanism for lateral loads itigation but the position of shear walls in the building should be made judiciously. In the present study, the Shear walls at exterior corners (Model 5) has found perform better than other modal cases being considered in the analysis.