Vertical dynamic response of the ballastless track on long-span plate-truss cable-stayed bridges

被引：0
作者：
YongLe Li
Yang Su
FeiLong Xia
Nan Zhang
机构：
[1] Southwest Jiaotong University,Department of Bridge Engineering
[2] Northern Jiaotong University,Department of Bridge Engineering
[3] Southwest Jiaotong University,MOE Key Laboratory of High Speed Railway Engineering
来源：
Science China Technological Sciences | 2015年 / 58卷
关键词：
long-span cable-stayed bridge; plate-truss girder; ballastless track; train-induced vibration; vehicle-bridge system;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An analytical model is presented to study vertical dynamic response of the ballastless track on long-span plate-truss cable-stayed bridges based on an explicit dynamic analysis method. In the model, the train, ballastless track and bridge are treated as a coupled vibration system with interaction. By simulating the dynamic process of the system, this paper discusses the distribution law of dynamic responses of the bridge deck and the bed slab. It shows the necessity of a base plate for the ballastless track on the long-span plate-truss cable-stayed bridge. Comparison of the influence of different train speeds and stiffness of the elastic vibration-damping pad on the dynamic responses of the bridge deck and the bed slab is also made. The reasonable stiffness value of elastic vibration-damping pad is proposed.
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页码：236 / 247
页数：11
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