Performance of Buildings at Different Soils using Pushover Analysis

Ketan Bajaj; Radha Gonawala; Bhavik M. Vyas

doi:10.37591/joge.v1i2.4031

Abstract

Earthquake has been considered as the most devastating calamity which may lead to loss of lives and properties as seen in 2001 earthquake at Bhuj, India. In India various buildings has been designed irrespective of the effect of dynamic load corresponding to different kinds of soil condition. So, in this study an attempt has been made to analyse different types of buildings viz. G+4, G+8 and G+12 under different soil condition as hard, medium and soft. The behavior of these building models has been studied in SAP: 2000 software considering nonlinear pushover analysis at different seismic zones as III, IV and V (as per IS: 1893, 2002). The spectral displacement and spectral acceleration at performance point has been compared to study the effect of soil-structure interaction (SSI). Pushover curves have also developed to examine the performance of the building at different conditions. It was determined that with the change in soil condition for the same type of building configuration, targeted displacement is not zero at zero base shear condition in nonlinear dynamic analysis. In addition to that, lateral deflection was also compared for different types of building. This study can be used while designing the building at different soil conditions and seismic zones. Keywords: Pushover analysis, soil-structure interaction, spectral acceleration and displacement, demand-capacity curve