LRB隔震桥梁减震效果分析  

ANALYSIS OF SEISMIC RESPONSE OF ISOLATED BRIDGES WITH LRB

作　　者：王丽[1] 阎贵平[2] 孙立[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022 [2]北方交通大学土建学院,北京100044

出　　处：《工程力学》2003年第5期124-129,共6页Engineering Mechanics

基　　金：国家自然科学基金资助项目(59978002)

摘　　要：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,首次把支座和桥梁结构纳入至一个系统中,并考虑其相互影响和相互作用。利用大型通用结构分析软件(ANSYS),对采用铅芯橡胶支座(LRB)隔震的桥梁输入了多条实际地震波进行时程分析,系统地讨论了隔震桥梁的减震性能,得出了一些有意义的结论。The nonlinear properties of LRB and bridge structures and their interactive effect are considered for the first time. In this paper, the nonlinear behavior of aseismic bearings and ductile plastic hinges of piers are taken into account by using nonlinear spring element. Nonlinear time history analyses of isolated bridges with the input of large numbers of seismic waves are performed. When nonlinear seismic response analysis is carried out, the isolation effect is discussed and some valuable conclusions are drawn.

关 键 词：LRB桥梁 隔震 非线性 时程分析 

分 类 号：U442[建筑科学—桥梁与隧道工程] U441.3[交通运输工程—道路与铁道工程]