EXPERIMENTAL VERIFICATION OF SEISMIC EVALUATION OF RC FRAME BUILDING DESIGNED AS PER PREVIOUS IS CODES BEFORE AND AFTER RETROFITTING BY USING STEEL BRACING

An experimentally obtained pushover curves of a ¼ size RC frame models with and without infill wall and steel bracing have been used to calibrate the non-linear analytical model of the frame. The pushover testing has been carried out on three non-ductile frame models namely bare frame(BF), infilled frame (INF) and a steel braced (SBF) frame under quasi-static condition. The non-linear analytical model is further extending for the seismic evaluation and retrofitting of a 4-storied 2D frames using infill wall and steel bracing. In this context; firstly a 4-storied 2D RC frame structure has been analyzed and designed using different versions of IS: 456 and IS: 1893. Re-evaluation of these frames has been carried out to with masonry infill and steel bracing as retrofitting scheme using pushover analysis. The different pushover parameters of the frames before and after retrofitting have been compared.