EFFECT OF DETERIORATED ISOLATORS ON THE SEISMIC RESPONSE OF REINFORCED CONCRETE COLUMNS WITH ISOLATOR

Abstract

 It is important to evaluate the characteristics of deteriorated isolators and develop an analytical model of them to evaluate the seismic safety of bridge columns with deteriorated isolators. Effect of the deteriorated isolators on the seismic response of reinforced concrete columns with isolator was investigated based on cyclic loading experiments of isolators in this study. It was shown that deteriorated isolators increase the response of reinforced concrete columns at lower seismic intensity compared to the isolators without deterioration based on incremental dynamic analysis. Furthermore, it was shown that the nonlinear response displacement of reinforced concrete columns varies significantly.