列车-桥梁-汽车耦合振动仿真分析

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (20) : 123-128.

论文

列车-桥梁-汽车耦合振动仿真分析

陈上有1,2，路萍3，刘高1,2，夏禾4

作者信息 +

Simulation analysis on coupled vibration of train-bridge-road vehicle system

CHEN Shang-you1,2，LU Ping3，LIU Gao1,2，XIA He4

Author information +

文章历史 +

摘要

用多刚体系统模拟列车、汽车车辆，用空间梁单元、杆单元模拟桥梁。采用密贴假定及蠕滑理论处理轮轨接触关系，设汽车轮胎与公路桥面为点接触且不分离建立列车-桥梁-汽车耦合振动分析模型，编制仿真分析软件。以某公路、铁路两用桥为例进行列车-桥梁-汽车耦合振动分析。结果表明，列车与汽车同时上桥且随汽车数量增多，列车机车及车辆的竖向加速度、脱轨系数、轮重减载率最大值明显增大，汽车对列车运行安全性具有不利影响。

Abstract

A dynamic analysis model of coupled train-bridge-road vehicle system is established, in which the train and road vehicles are modeled by multi-rigid-body system, the bridge is modeled by spatial beam and bar elements, the wheel-rail corresponding assumption and the creep theory are used to deal with the wheel-rail contact relationship, and the bridge deck and the vehicle tires are assumed to be in point-contact and without separation. A computer simulation code is developed. With a rail-cum-road bridge as an example, the coupling vibration responses of the train-bridge-road vehicle system are analyzed. The results show that when trains and road vehicles pass the bridge simultaneously, with the increase of vehicles, the maximum vertical acceleration, derailment factor and offload factor of the train are significantly increased, showing an adverse influence of the road vehicles on the running safety of the trains.

导出引用

陈上有;路萍;刘高;夏禾. 列车-桥梁-汽车耦合振动仿真分析[J]. 振动与冲击, 2014, 33(20): 123-128

CHEN Shang-you;LU Ping;LIU Gao;XIA He. Simulation analysis on coupled vibration of train-bridge-road vehicle system [J]. Journal of Vibration and Shock, 2014, 33(20): 123-128