SEISMIC ANALYSIS OF BUILDING WITH MASS IRREGULARITY

Abstract

This thesis is concerned with the consequences of various vertical irregularities on the seismic response of the structure. Objective of the project is to carry out Response spectrum analysis (RSA) and Push Over Analysis of vertically irregular RC building frames. Comparison of the results of irregular structures with regular structure is done. During this mass irregularity and vertical irregularity were considered. The story shear force was observed to be maximum for the first story and it diminishes in the top storeys. In this mass irregular structures were found larger base shear than similar regular structures. if the tall building structure (low natural frequency) that is the structure with 4-8 storeys are more vulnerable to earthquake. So, in the present study G+7 storied building is considered. In this study push-over analysis is performed in the SAP2000 software. Various pushover curves are obtained. Performance point is obtained using capacity spectrum method.