隔震桥梁减震效果分析

Seismic analysis for isolation bridges

本文根据隔震桥梁的设计特点,分别利用非线性水平和转动弹簧单元来模拟减、隔震支座和桥墩延性塑性铰的非线性性能,计及隔震器与减震器的作用对桥梁结构非线性弹塑性动力反应进行了研究。在把桥梁结构和减震器作为整体考虑的情况下,用算例分析了隔震桥梁的减震效果。

In this paper, according to the behavior of seismic isolation systems for bridges, the nonlinear behavior of seismic bearings and dutile plastic hings of piers are taken into account by using nonlinear spring element. Nonlinear seismic response analyses the bridge with and without a isolation bearing are carried out, and of the isolation effect is discussed. One design example of bridge is presented to investigate the effect of seismic isolation design.