Dynamic response analysis of multiple beam bridge with cracks under moving vehicles

被引：0

作者：

Tan G.-J. ^{[1
]}

Jiang L. ^{[1
]}

Wu C.-L. ^{[1
]}

Kong Q.-W. ^{[1
]}

Liang C.-Y. ^{[1
]}

机构：

[1] College of Transportation, Jilin University, Changchun

来源：

Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2020年 / 50卷 / 06期

关键词：

Bridge engineering; Dynamic response; Moving vehicle; Multiple beam bridge; Switching crack;

D O I：

10.13229/j.cnki.jdxbgxb20200201

中图分类号：

学科分类号：

摘要：

The dynamic response of multiple beam bridge with switching cracks under moving vehicles is investigated using finite element method. Firstly, the stiffness matrix of the cracked beam element is derived based on the fracture mechanics theory and the dynamic equation of the cracked beam bridge is obtained. Secondly, the vehicle motion equation is derived based on D'Alembert Principle by using the whole vehicle model to simulate the moving vehicle. Thirdly, the vibration equation of the vehicle-bridge coupling system is established according to the vehicle-bridge interaction theory model. Finally, the influence law of crack position, transverse bridge position for vehicle and bridge deck roughness on dynamic response is analyzed by taking the multiple simply supported T-beam bridge with cracks as an example. © 2020, Jilin University Press. All right reserved.

引用

页码：2147 / 2158

页数：11

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