某隔震桥梁非线性地震反应分析

摘要

随着隔震技术的广泛研究,许多桥梁结构采用了隔震技术.基于隔震桥梁的设计特点,利用连接单元来模拟隔震支座的非线性性能及作用,对桥梁结构非线性弹塑性动力反应进行了研究；采用结构分析软件ZEUS-NL,结合算例分析得出了隔震桥梁震害及上部结构扭转的原因,为隔震桥梁的设计提供参考依据.%With the widespread application of seismic isolation technology, this technology is used in bridge structures. In this paper, based on the behavior of seismic isolation systems for bridges, the nonlinear behavior and action of seismic bearings are taken into account by using nonlinear joint element. One design example of a bridge is presented to analysis using the commercial FEM program ZEUS-NL, when nonlinear seismic response analysis is carried out, the reasons for the bridge seismic damage and its superstructure of the bridge torsion is concluded. The results provide reference for design isolate bridges.