建立一座5跨薄壁高墩连续刚构桥的空间抗震有限元模型,考虑群桩效应和桩-土效应,运用时程分析法计算了一致激励及行波效应下高墩的地震响应。结果表明,纵向线刚度大的墩将分担较大的纵向内力,质量大的墩将分担较大的横向内力,行波效应比一致激励下的地震内力大,桩-土效应使高墩变截面处的地震内力增大。 A finite element model of a five-span continuous rigid frame bridge with thin-walled high piers is established. Considering group pile effect and pile-soil effect, the seismic response of high piers under uniform excitation and traveling wave effect is calculated by time-history analysis. The results show that the pier with large longitudinal stiffness will share a greater longitudinal internal force, and the pier with larger mass will share larger lateral internal forces. The traveling wave effect is larger than that under uniform excitation. The pile-soil effect makes the cross section of high pier The earthquake’s internal force increases.