Response of Seismic-Isolated Bridges in Relation to Intensity Measures of Ordinary and Pulselike Ground Motions

Abstract

This study concentrates on the efficiency of numerous ground motion intensity measures (IMs) to be used in estimating the response of seismic-isolated bridges (SIBs). Efficiency of commonly used IMs was investigated through their correlation with maximum isolator displacement (MID) obtained from nonlinear dynamic analyses. Two sets of ground motions (GMs), classified as ordinary and pulse-like, were used in nonlinear dynamic analyses of SIBs. In the analyses, varying isolation parameters, such as the isolation period,