Abstract—To study the influence of the spatial variability of ground motion on the dynamic response of high pier and long-span bridges, the numerical model of a high pier and long-span railway bridge respectively subjected to longitudinal and transversal earthquake excitations and located at western mountain of China is established to study its dynamic response based on the principle of multiple support excitation. The results show that the bottom and the top sections with longitudinal ground motion excitations are dangerous, especially the bottom section of high pier; the internal forces at the top of pier are smaller, while the bottom sections are still at adverse conditions; compared with the uniform excitation, the dynamic response of the structural design control points may be increased and also may be reduced, especially in the internal forces of the main pier. These phenomena indicate that the influence of the traveling wave effect on the structural response is related to the structural characteristics and the location of interest of the bridge structures. Comprehensive consideration should be given to seismic design of long-span bridges with high piers. 
 

Index Terms—seismic, high pier, continuous rigid, railway bridge

Cite: Zhiwei Chen, Qianhui Pu, Hongyu Jia, XiLi, and LanpingLi, "Seismic Response of High Pier Continuous Rigid Bridge Subjected to Multiple Support Excitation," International Journal of Structural and Civil Engineering Research, Vol. 5, No. 3, pp. 223-227, August 2016. doi: 10.18178/ijscer.5.3.223-227