高速列车车轮型面磨耗对轨道、桥梁振动特性影响分析

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (13) : 185-196.

论文

昌超1，肖乾 ,2，王亚朋3

作者信息 +

Effects of high-speed train’s wheel wear on vibration characteristics of track and bridge

CHANG Chao1, XIAO Qian1,2, WANG Yapeng3

Author information +

文章历史 +

摘要

以国产某型号动车组、CRTSⅢ无砟轨道和32m标准箱型简支梁为对象，基于列车-轨道-桥梁耦合动力学和固定界面模态综合法理论，利用多体动力学软件UM与ANSYS、HYPERMESH联合仿真的方法，建立三维车线桥耦合动力学精细模型，采用轮轨非椭圆多点接触算法。在数值算例中，以列车通过3跨简支梁桥为计算背景，分析不同里程、速度下的车轮型面对轨道、桥梁结构振动特性的影响。结果表明：车轮型面磨耗对轨道、桥梁结构的振动特性：横向受到的影响大于垂向。横向振动响应指标随着车轮型面磨耗增加，逐渐增大。同时会造成轨道、桥梁振动主频发生偏移，幅值异常，对结构的中高频阶影响更大。建议轨道、桥梁结构设计过程中，考虑轮轨型面发生变化后的影响，减小轮轨型面变化对轨道、桥梁结构造成的影响。

Abstract

Taking a certain type of domestic EMU, CRTS III ballast-less track and a 32 m long simply supported girder bridge as the study object, based on the theory of train-track-bridge coupled dynamics and the fixed-interface modal synthesis method, using the joint simulation method with the multi-body dynamic software UM and the software ANSYS and HYPERMESH, a 3D train-track-bridge coupled dynamic sophisticated model was established to perform numerical simulation adopting the non-elliptic multi-point wheel/rail contact algorithm. In numerical example, taking a high-speed train passing through a 3-span simply supported girder bridge as the computation background, effects of wheel wear on vibration characteristics of track and bridge structure under different mileages and speeds were analyzed. The results showed that effects of wheel wear on transverse vibration characteristics of track and bridge structure are larger than those on vertical ones; transverse vibration response index increases with increase in wheel wear; transverse vibration response causes the main vibration frequencies of track and bridge to drift and their vibration amplitude to be abnormal; wheel wear affects structure’s middle and high order vibration frequencies more significantly, so the effects of wheel/rail profile changes should be considered in designs of track and bridge structure to reduce these effects.

导出引用

昌超1，肖乾,2，王亚朋3. 高速列车车轮型面磨耗对轨道、桥梁振动特性影响分析[J]. 振动与冲击, 2019, 38(13): 185-196

CHANG Chao1, XIAO Qian1,2, WANG Yapeng3. Effects of high-speed train’s wheel wear on vibration characteristics of track and bridge[J]. Journal of Vibration and Shock, 2019, 38(13): 185-196

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