Sensitivity of structural stiffness parameters of long-span steel truss cable-stayed railway bridge

被引：0

作者：

Li, Yong-Le ^{[1
]}

Su, Mao-Cai ^{[1
]}

Wang, Shi-Gang ^{[1
]}

Chen, Ke-Jian ^{[2
]}

机构：

[1] Department of Bridge Engineering, Southwest Jiaotong University, Chengdu

[2] China Railway Eryuan Engineering Group Limited Company, Chengdu

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2015年 / 34卷 / 02期

关键词：

Cable-stayed railway bridge; Coupling vibration of vehicle-bridge system; Long span bridge; Stiffness parameter; Structural stiffness;

D O I：

10.13465/j.cnki.jvs.2015.02.029

中图分类号：

学科分类号：

摘要：

Aiming at the design of a long-span cable-stayed railway bridge, the effects of the stiffnesses of girder, cables and auxiliary piers on the bridge structure and the runing performance of vehicles were analyzed. It is shown by the analysis results that the increase of truss width can significantly increase the lateral bending stiffness of the bridge, but has a limited impact on train running performance. Increasing the truss height or cable cross section area can notably increase the fundamental vertical bending frequency and reduce the response of vehicle-bridge systems. Local bridge deck system contributes slightly to the overall bridge stiffness and has a limited impact on the vehicle response. Auxiliary pier can improve the vertical stiffness of the bridge, reduce the vehicle vertical acceleration and the vertical rotation angle at girder ends. ©, 2015, Chinese Vibration Engineering Society. All right reserved.

引用

页码：166 / 170

页数：4

共 8 条

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