IMPORTANCE OF STOREY DRIFT RATIO,DUCTITY AND PERFORMANCE POINT LEVELS ON MULTI STORY BUILDING WITH AND WITH OUT INFILLLS

Abstract

Multistory buildings with open (soft story) ground floor are inherently vulnerable to collapse due to seismic
loads, their constructions is still widespread in develop nations. Social and functional need to provide car parking space at
ground level far outweights the warning against such buildings from engineering community.
In this study, 3D analytical model of multistory buildings have been generating for different buildings models and analyzing
using structural analysis tool ‘ETABS’. To study the effect of ground soft, infill, and models with ground soft during
earthquake, seismic analysis both linear static, linear dynamic (response spectrum method) as well as nonlinear
static(pushover) procedure have to be perform. The analytical model of building includes all important components that
influence the mass, strength, stiffness of the structure. The deflections at each story have to be compare by performing
equivalent static, response spectrum method as well as pushover have also be perform to determine capacity, demand and
performance level of the considering models. Numerical results for the following seismic demands considering the inelastic
behavior of the building, ductility coefficients of structure.