Coupled Vibration of Train-Bridge System of Cross-sea Bridge Subject to Wind and Wave

被引：0

作者：

Cui S. ^{[1
]}

Guo C. ^{[1
]}

Zhang M. ^{[1
]}

Chen Z. ^{[1
]}

Cao Y. ^{[1
]}

Zhu B. ^{[1
]}

机构：

[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu

来源：

Zhu, Bing (zhubing126@126.com) | 1600年 / Science Press卷 / 43期

关键词：

Aerodynamic load; Co-simulation; Coupling; Dynamic response; Wave load;

D O I：

10.3969/j.issn.1001-8360.2021.07.018

中图分类号：

学科分类号：

摘要：

Based on the study of a cable-stayed bridge, the wave loads on the substructure of the bridge were calculated. The hybrid grid of train and bridge was generated by ICEM, and the aerodynamic loads of the system under different wind and wave combinations were calculated in Fluent. Based on Ansys and Simpack, the train-bridge coupling model was created, where the wind wave load was input as time history to study the change law of train and bridge dynamic indexes under different combinations. The results show that: when the wind speed and train speed are constant, the safety and comfort of the train-bridge system will decrease with the increase of wave load recurrence period. The derailment coefficient of the train and the lateral force of the wheelset change most obviously with the wave load. Compared with the non-wave load, the vertical displacement and acceleration of the middle span of the bridge change little, while the lateral index gradually increases; When the wave height and train speed are constant, the dynamic indexes of the system increase significantly with the increase of wind speed. The change extent of the train derailment coefficient and lateral force of the wheelset is maximum. The vertical displacement in the middle span of the bridge changes abruptly when the wind speed reaches 30 m/s, while the vertical acceleration changes abruptly from a calm environment to a windy environment. The lateral dynamic index of the bridge increases significantly with the increase of wind speed. © 2021, Department of Journal of the China Railway Society. All right reserved.

引用

页码：138 / 143

页数：5

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