Vehicle-bridge Dynamics Interaction Characteristics of High-speed Trains Passing Each Other on Bridge at Same Speed

被引：0
|
作者：
Wang Y. [1 ]
Lin P. [1 ]
Sun J. [2 ]
Li H. [3 ]
机构：
[1] School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou
[2] Infrastructure Inspection Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing
[3] Railway Science and Technology Research and Development Centre, China Academy of Railway Sciences Corporation Limited, Beijing
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2021年 / 43卷 / 05期
关键词：
Air pressure pulse; Bridge; FEM; High-speed railway; Trains passing each other; Vehicle-bridge interreaction;
D O I：
10.3969/j.issn.1001-8360.2021.05.020
中图分类号：
学科分类号：
摘要：
Based on the theory of 3D unsteady turbulence and dynamics of multi-body system, a railway train-bridge interaction model was established, the air pressure pulse was taken into account, in order to analyze the influence of wind load to the train-bridge system when two high speed trains meeting on the bridge. A 40 m freely supported beam bridge model was created, which will probably be used for higher speed railway in future. Safety, ride comfort, displacements, impact factor, accelerations and other dynamical variables were analyzed during the numeric simulation. The results show that the dynamical responses of train and bridge increase with the speed, except that the vertical displacement of bridge, which firstly decreases and then increases as the speed increases. The pressure of wind has much more influence on the vertical responses of train than lateral responses, and little influence to the bridge. Taking lateral acceleration and Sperling index as safety criteria for train, the maximal meeting speed for high speed trains on bridge is 450 km/h. Considering the high-speed trains passing on the bridge, the impact factor of the bridge will be greater than that of the existing standard. © 2021, Department of Journal of the China Railway Society. All right reserved.
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页码：169 / 176
页数：7
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