Seismic Performance of Multistory RCC Building with Different Shapes of Shear Walls by Linear Static, Linear Dynamic and Non- Linear Time History Analysis

Abstract

In modern high-rise structures, Finite Element Modeling is a very important approach to analyze numerically the problems of structural engineering. In those structures, for resisting the lateral loads that may be induced by the earthquake forces and wind forces shear walls are most commonly being used. The shear walls are generally provided at the sides of the building and also they can be provided in the form of core for housing the lifts and stairs. Certain openings may have to be provided for the functional reasoning in the shear walls to accommodate the doors, windows and other openings. For conference halls, movie theatres, function halls etc., generally larger size of openings are provided. The behavior of the structure in terms of deflection and stresses in the members are greatly influenced by the number, location, shape and size of the openings. In this study, for regular reinforced concrete building analytical investigation is performed to observe the behavior of flanged, L-shaped and box type shear wall with and without openings in high rise building under seismic excitation. ETABS v.19 software package is used for this analysis as per IS 1893:2016 linear static, linear dynamic and nonlinear time history analysis is performed. For the nonlinear time history analysis, the nonlinear static procedures are generated to overcome the limitations of the static analysis methods. Storey displacements, storey forces, storey drift, base shear are calculated for all the models. Results indicated that the openings in the shear wall affect the strength and rigidity of the shear wall.