考虑轮轨接触损失的列车乘员舒适性分析

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (16) : 181-187.

论文

考虑轮轨接触损失的列车乘员舒适性分析

张经纬1，刘学文1，王岩松1,王颖轶2

作者信息 +

Riding comfort of trains with rail irregularities considering contact loss of wheel-rail

ZHANG Jingwei1,LIU Xuewen1,WANG Yansong1,WANG Yingyi2

Author information +

文章历史 +

摘要

为探究轮轨接触损失条件下列车乘员舒适性的差异，基于经典半空间十自由度车-桥耦合动力模型，运用集中质量法并引用动态单元法，建立了一个考虑轮轨接触损失的半空间十三自由度人车-线耦合动力模型，并开发了一个完整的C++求解程序。计算所得某高架桥铁路运行路段通车时的轨道振动加速度，与实测值进行对比，其峰值波峰波谷间隔极为接近，验证了模型的有效性。基于该模型分析了不同轨道不平顺谱下，车体和等效人体的振动响应，并比较研究了各轨道不平顺谱下车体和等效人体的振动差异。结果表明：不同的轨道不平顺质量将引起车体、等效人体的不同振动响应；且各不同的轨道不平顺质量下，车体和等效人体的振动响应均有所差异。现有以车体振动响应为输入计算评价列车舒适性的方法，并不符合实际工况。文中十三自由度人车模型与桥梁耦合的同时还考虑了轮轨接触损失的工况，并以等效人体动力响应为输入来计算乘员舒适性，计算结果满足现有高标准舒适性要求。

Abstract

Based on a semi-analytical method of train-bridge interactions that considers the separation between vehicles and bridges, this study presents an improved physical model that is modelled with thirteen degrees of freedom to analyze the riding comfort of trains more precisely.In this new method, all of the passengers in one coach of the train were treated as three mass blocks coupled on the coach of the train.In the numerical analysis, dynamic responses of the train and dynamic responses of the passengers under different train speeds were computed in vehicle-structure dynamic analysis program with different random rail irregularities.And then, these two dynamic responses were compared.The results show that the rail irregularities affect the vertical acceleration of the passengers and the train, and differences of dynamic responses between the train and passengers existed, these differences have effect on judgement of the riding comfort of the train moving over a bridge.

导出引用

张经纬1，刘学文1，王岩松1,王颖轶2. 考虑轮轨接触损失的列车乘员舒适性分析[J]. 振动与冲击, 2019, 38(16): 181-187

ZHANG Jingwei1,LIU Xuewen1,WANG Yansong1,WANG Yingyi2. Riding comfort of trains with rail irregularities considering contact loss of wheel-rail[J]. Journal of Vibration and Shock, 2019, 38(16): 181-187

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