Cable-beam vibration characteristics of cable-stayed bridge under external excitations

被引：0
|
作者：
Wang, Tao [1 ]
Shen, Ruili [1 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2015年 / 50卷 / 06期
关键词：
Cable-beam vibration; Cable-stayed bridge; External excitation; Finite element method; Nonlinear; Stayed cable;
D O I：
10.3969/j.issn.0258-2724.2015.06.005
中图分类号：
学科分类号：
摘要：
To understand the effect of external excitations on the cable-beam vibration of large-span cable-stayed bridge, firstly, the theoretical equation for the large-amplitude cable vibration was built, and based on nonlinear vibration theory, the dynamic cable element was developed using finite element method (FEM). Secondly, a large cable-stayed bridge FEM modal was built, and the cables of the bridge were simulated by cable dynamic element. Finally, a typical cable-stayed bridge was used as an example to investigate the cable-beam vibration characteristics under different external excitations. The results indicate that it is more reasonable to study the cable-beam vibration on global bridge scale. In cable-beam vibration, there is an energy transfer process. Under external excitations, 1:1 main resonance more easily occurs than 2:1 parametric resonance. The shorter cables close to the towers in cable-stayed bridge are difficult to experience large-amplitude vibration. parametric resonance, main resonance of cable occur more easily. The shorter cables which near by the towers in cable-stayed bridge are difficult to occur large amplitude vibration. © 2015, Editorial Department of Journal of Southwest Jiaotong University. All right reserved.
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页码：1001 / 1010
页数：9
相关论文
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