斜拉桥减震、耗能体系非线性纵向地震反应分析

Nonlinear Longitudinal Seismic Response Analysis of Cable stayed Bridge Systems with Energy Dissipation

提出在斜拉桥主梁与塔的联结处采用铅芯橡胶支座作为其减震、耗能装置，并利用非线性弹簧单元来模拟铅芯支座的滞回耗能特性，通过结构非线性地震反应的分析方法，分析了铅芯支座对斜拉桥的减震、耗能的效果。结果表明在斜拉桥主梁与塔联结处采用铅芯支座是一种非常有效的减震措施。

As the energy dissipation devices, the lead rubber bearings are applied to deck tower and deck anchor pier connections of the cable stayed bridge. The differential model was used for describing the hysteretic behavior of lead rubber bearing. The nonlinear seismic response analysis method is utilized for investigating the effects of lead rubber bearings to reduce the seismic force. The results show that the lead rubber bearings as the deck tower connection of the cable stayed is an effective method to reduce seismic forces.