Analytical Study on Seismic Response of Retrofitting Multistoried RC Building through using Steel Wrapping

Abstract

A seismic design is based upon combination of strength and ductility. Frequent seismic disturbances, the structure are expected to remain in the elastic range. By considering the actual dynamic nature of environmental disturbances, more improvements are needed in the design procedures. And some advance techniques are used to strengthen the existing structures i.e. different retrofitting methods. All these methods have their own advantages. The main objective of the present study is to analyze the behavior of Retrofitted building i.e. provision of steel jacketing in increasing the performance of building. The present study aims at checking the adequacy of multi-storey frame structures using retrofitting methods for the seismic excitations. The Retrofitted building i.e. provision of steel jacketing is analyzed and compared with bare frame structure by using time history and pushover analysis method by using Commercial software SAP2000 v16 is used for analysis. The responses of the structure are compared by considering different parameters i.e. displacement, base shear, plastic hinges, time period of mode shapes from FEMA – 356. The result shows that plastic hinge formation during earthquake at beam-column junction can improved performance with use retrofitting method i.e. steel jacketing.