行波激励对千岛湖大桥地震响应的影响  

The Effect of Traveling Wave on Seismic Response of Qiandaohu Bridge

作　　者：樊珂[1] 闫维明[1] 李振宝[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022

出　　处：《工程抗震与加固改造》2008年第1期69-77,共9页Earthquake Resistant Engineering and Retrofitting

摘　　要：钢管混凝土拱桥因为其优秀的结构特性在工程界中得到越来越多的广泛应用。并且随着工程与科学技术的发展和实际工程的需要,钢管混凝土拱桥的跨度越来越大,单纯的一致激励已经不能满足工程抗震的需要。因此,本文对杭州千岛湖1号大桥一致激励与多点激励下的地震响应进行数值模拟,并分别选取一至四类场地波进行了行波效应的分析。结果证明,大跨度拱桥在一致激励和行波激励下会出现迥异的响应。The concrete filled steel tube（CFST） arch-bridge has widely engineering application because of its good structural characteristics. And as the span of the CFST arch-bridge becomes larger and larger, The uniform excitation cannot satisfy the anti-seismic checking. The numerical simulation for seismic response of the No. 1 bridge of Qiandaohu with uniform excitation and various ground＇ s traveling wave effect is performed in this paper. The different effects between of uniform excitation and traveling wave to the bridge are compared.

关 键 词：钢管混凝土拱桥 千岛湖大桥 行波效应 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]