铁路桥梁铅芯橡胶支座桥梁减隔震应用研究

给出了铅芯橡胶支座滞回特性的等效线性模型以及支座设计参数的计算方法和取值范围,建立了隔震多跨简支梁桥体系的全桥模型,通过改变地震激励、地震动强度和车速等参数,对隔震桥梁在不同激励下的响应规律和特点进行了系统的研究,分析了隔震效果。

Study on seismic isolation of railway bridge fabricated Lead Rubber Bearings

Equivalent linear model of hysteretic characteristics,computational method and the varying range of design parameters of LRB are presented.A full-bridge model of multi-span simple supported bridge with LRB is established.By changing earthquake excitation,ground motion intensity,vehicle speed and so on,the response of bridge vibration system are analyzed,response law,characteristics and seismic isolation effect of bridge with LRB under different excitations are investigated systematically.