Analysis of cable vibration of long-span cable-stayed bridge induced by heavy haul train

被引：0
|
作者：
Zhu Z.-H. [1 ,2 ]
Liu Y. [1 ]
Gong W. [1 ]
Kang H.-J. [3 ]
Jing H.-Q. [1 ]
机构：
[1] School of Civil Engineering, Central South University, Changsha
[2] Key Laboratory of Heavy Haul Railway Engineering Structure, Changsha
[3] School of Civil Engineering, Hunan University, Changsha
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2020年 / 33卷 / 01期
关键词：
Dynamic finite element method; Nonlinear vibration; Stay cable; Train-bridge coupled vibration;
D O I：
10.16385/j.cnki.issn.1004-4523.2020.01.017
中图分类号：
学科分类号：
摘要：
In order to study the nonlinear vibration of cables of long-span railway cable-stayed bridges caused by heavy haul trains, the substructure method is adopted. Based on the linear bridge space finite element model, the dynamic response of the cable anchorage point is calculated by the bridge coupling dynamics theory. Then the dynamic response is used as excitation of the end of the cable, and the nonlinear dynamic finite element program of the cable based on the CR column method is adopted to calculate the nonlinear dynamic response of the cable. Taking the Dongting Lake three tower cable-stayed bridge of Jingyue railway as an example, the cable vibration analysis of the cable-stayed bridge is carried out. The results show that there is no obvious correlation between the dynamic response of the main beam and the bridge tower of the cable-stayed bridge under the effect of the heavy load train and the vibration response of the cable-stayed cable, and the vibration response of the car induced cable is a quasi-static over time. Through further comparison of the different calculation schemes, namely vehicle bridge coupling vibration method, moving axle load method and static live load method, on cable stress, it is found that for large span railway cable-stayed bridge, the cable stress results obtained by static live load method are of sufficient accuracy because the effect of vehicle bridge coupling vibration is not significant. © 2020, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：149 / 157
页数：8
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