non linear dynamic analysis of bridge to spatially variable multiple support excitations

Abstract

this paperprensents a study of the influence of specially variable ground motion on the longitudinal seismic response of multi span bridge.non liear finite element modle are created for various bridges and non linear inelastic time history analysis are conducted.ground motion time histories are simulated according to the algeriandesign spectra.in this study two types of exitations are considered the first utilizez the specially the variable ground motion and the second utilizes the uniform ground motion.the comparative analysis of the bridges models shows that the spatial variability ground motion has important effects on the dynamic behavior of the bridges