相邻轮对耦合效应对有砟轨道承载状态的影响

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (6) : 238-243.

论文

周和超1，徐世洲1，王亚杰2，张济民1

作者信息 +

Coupling effect between adjacent wheel sets on a ballasted track system

ZHOU Hechao1, XU Shizhou1, WANG Yajie2, ZHANG Jimin1

Author information +

文章历史 +

摘要

通过建立有砟轨道有限元模型，重点分析相邻轮对轮轨力耦合效应对有砟轨道承载状态的影响。研究结果表明列车荷载的模拟应以转向架荷载为最小分析单元，从而既考虑了相邻轮对轮轨力的耦合效应，又能够比较方便的进行统计计算。同一转向架内相邻轮对轮轨力的相互耦合将对有砟轨道各结构的应力形状和幅值大小带来显著影响。随着相邻轮对耦合程度的增强，轨枕、道砟、路基承受的最大应力逐渐上升，应力时间历程也由“M”形转为倒“U”形。此外，随着转向架轴距的减小、轴数的增加，耦合效应逐渐增强。对于我国现有机车车辆结构而言，地铁、普客、动车由于轴距较大，耦合效应较弱，而货车轴距较小，耦合效应明显增强；对于多轴转向架而言，随着转向架轴数的增加，有砟轨道各层应力大幅上升，其最大增幅达到105%。当转向架轴数超过3轴时，轨枕、道砟、路基的应力维持在一定水平，不再进一步增加。

Abstract

The finite element model of a ballasted track system was established in order to study the coupling effect between adjacent wheel sets. The research results indicate that due to the coupling effect between adjacent wheel sets the train loads should be treated as a series of loads from each bogie rather than from separated wheel sets. This coupling effect influences the stress of the ballasted track system seriously and when the coupling effect between adjacent wheel sets increases, the stresses of the ballasted track system rise obviously. Meanwhile, the stress distribution is also changed from “M” shape to inverse “U” shape gradually. Besides that,the simulation results point out the coupling degree becomes strong with the increased number of wheel sets and the decreased number of axle base. In terms of the common railway vehicles, due to the shorter axle base, the coupling degree between adjacent wheel sets is stronger for freight vehicles than for passenger vehicles. And in terms of the multiaxle bogie, the coupling degree increases not any more, when the number of wheel sets increases more than three.

导出引用

周和超1，徐世洲1，王亚杰2，张济民1. 相邻轮对耦合效应对有砟轨道承载状态的影响[J]. 振动与冲击, 2018, 37(6): 238-243

ZHOU Hechao1, XU Shizhou1, WANG Yajie2, ZHANG Jimin1. Coupling effect between adjacent wheel sets on a ballasted track system[J]. Journal of Vibration and Shock, 2018, 37(6): 238-243

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