Dynamic response of a bridge considering its surface random roughness

被引：0
|
作者：
Zhang J.-B. [1 ,2 ]
Liao J.-B. [1 ]
Tang G.-W. [1 ]
Xu W.-T. [2 ]
机构：
[1] State Key Laboratory of Bridge Engineering Structural Dynamics, Chongqing Communications Research & Design Institute, Chongqing
[2] School of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2016年 / 35卷 / 07期
关键词：
Bridge surface roughness; Dynamic response; Pseudo-excitation method; Vehicle-bridge coupling vibration;
D O I：
10.13465/j.cnki.jvs.2016.07.033
中图分类号：
学科分类号：
摘要：
Based on the random vibration theories, dynamic response curves of short and medium-span girder bridges considering vehicle-bridge coupling and bridge surface rough ness were studied. The dynamic equations of the vehicle-bridge coupled system were solved using the pseudo-excitation method (PEM), and the mean values and standard deviations of the deflection and stress of the bridge's were calculated. Based on the 3σ method, the statistical solutions were converted into deterministic value ranges, attracted by attention of engineering researchers. The results showed that the standard deviations of the deflection and stress at the mid span of the bridge are greatly affected by vehicle velocity and bridge surface roughness level; the value range for the bridge's dynamic response is large and more strongly random; compared with the quasi-static influence line, the dynamic response curves reflect the interaction of vehicle-bridge more evidently. © 2016, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：214 / 219
页数：5
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