MULTI-MODE PUSHOVER ANALYSIS AND SEISMIC EVALUATION IN HYBRID STRUCTURES

A multi-mode pushover analysis procedure is summarized and evaluated herein,which envelopes multi-mode shapes and uses SRSS combination to get the structural response.The target displacement of each mode in pushover analysis can be obtained with inelastic spectrums.A hybrid structure is used to evaluate numerically the accuracy of the proposed analysis procedure by comparing the push-over structural responses with the results of the nonlinear history analysis(NHA).It is demonstrated that the structural responses of the proposed pushover analysis are generally similar to the results from the NHA,especially in story drift and shear,which are the most critical index in earthquake resistant evaluation.