Modified Method for Seismic Performance Evaluation to Pushover Analysis

It is very important that predict the nonlinear seismic behavior exactly for seismic performance evaluation of a building in the Performance based seismic design.Evaluation method of seismic Performance based on the Pushover analysis reflected in PBSD was developed by some researchers.For the evaluation of nonlinear global and local seismic responses by Pushover analysis exactly,lateral load distribution considering the dynamic characteristics of structural system and performance point should be determined based on the evaluation of reasonable deformation capacity of a building more exactly.In this paper,the proposed method can be used to evaluate the seismic performance for the global nonlinear behavior of a building and to accurately estimate its local nonlinear seismic responses.In order to demonstrate the accuracy and validity of this method,nonlinear seismic responses estimated by the proposed method are compared with those obtained from other analytical methods.