Pushover Analysis Of Existing RC Frame Structure

Abstract

The pushover analysis of a structure is a static non-linear analysis under permanent vertical loads and gradually increasing lateral loads. The equivalent static lateral loads approximately represent earthquake induced forces. Seismic analysis of building can be categorized depending upon the sophistication of modeling adopted for the analysis, but in this method one would not be able to capture the dynamic response, especially the higher mode effects. The capacity of structure is represented by pushover curve. The method of Pushover analysis is to observe the successive damage states of a building. this method is relatively simple to be implemented and provides information on strength and deformation and ductility of the structure and distribution of demands which help in identifying the critical member likely to reach limit states during the earthquake and hence proper attention can be given while design and detailing. Modeling for such analysis requires the nonlinear properties of each component in the structure of the determination, quantified by strength and deformation capacities, which depend on modeling assumption . In this building frame is designed as per Indian standard i.e. IS-456:2000 and IS-1893:2002 and IS-875:1987. The study of the main objective to check performance of building when designed as per Indian Standard. The structural engineering profession has been using the nonlinear static procedure or pushover analysis described in FEMA-356 and ATC-40, when pushover analysis is used carefully it provides useful information that cannot be obtained by linear static or dynamic analysis procedure. The reinforced concrete structure are analyzed by nonlinear static analysis (Pushover analysis) .Using structural analysis and design ETABS 2016 Software. the present study is to evaluate the behavior of two typical new R.C.C building were taken for analysis G+8 and G+12 floors reinforced concrete frame structure subjected to earthquake forces in Zone ΙΙ. The paper gives the study of different literature investigation taken on pushover analysis.