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为解决桥梁结构土—基础作用体系在地震作用下的抗震响应问题.以实际工程为研究分析背景,采用有限元数值模拟方法,对边界、上部结构质量进行合理简化,运用ANSYS有限元分析软件建立结构体系抗震响应的二维有限元模型,通过模型分析了在修正后的埃尔森特罗及Taft地震波水平作用下的桥梁的模态、桥墩的抗震响应.证明了在进行桥墩抗震设计时土-基础-结构的相互作用是不能忽略的,且起到不利作用,研究结论表明在桥梁抗震设计中要充分考虑结构-土-基础相互作用.
In order to solve the seismic response of bridge-structure soil-foundation system under earthquake action, taking the actual project as research background, the finite element numerical simulation method is used to simplify the quality of the boundary and superstructure, and the ANSYS finite element analysis software is used to establish The two-dimensional finite element model of seismic response of structural system is used to analyze the modal of the bridge and the seismic response of the bridge pier under the modified El Centro and Taft seismic wave levels. It is proved that during the seismic design of the bridge pier, - The foundation-structure interaction can not be neglected and plays an adverse role. The research conclusion shows that the structure-soil-foundation interaction should be fully considered in the seismic design of the bridge.