PUSHOVER ANALYSIS OF 7 STOREY BUILDING USING SAP2000

Abstract

Elastic method of analysis indicates elastic capacity of structures and tells us about location of first yielding but it cannot capture important phenomena’s that control seismic performance of structures during severe ground shaking. Thus, for design and evaluation of structures, inelastic procedures are being used by engineers to understand structural behaviour during earthquakes with the assumption that elastic capacity of structure will be exceeded. Pushover analysis includes pushing the structure using invariant load pattern to get force – deformation relationship. While performing the pushover analysis, it is assumed that structural response is dominated by the fundamental mode. Development of plastic hinges can be monitored during the analysis. In the present study, non-linear pushover analysis using SAP2000 using invariant loading pattern has been carried out with the intention to investigate the relative importance of several factors in the non-linear analysis of frames. Relevant codes (ATC 40, FEMA273, FEMA356 and FEMA440) have been referred.