基于轮轨位移的列车运行安全评价方法研究

On Evaluation of Train Operation Safety Based on Wheel/Rail Displacement

随着列车不断提速,列车动力学问题越来越突出,如何评价和预测列车运行安全性是目前研究的一个重点。本文分析了目前国际上常用的车辆脱轨评价标准的特点及不足,在研究传统安全性评价准则的基础上,通过分析轮轨间几何位置和传统安全评价标准之间的联系,提出了根据轮轨相对横向位移与垂向位移以及横向位移与垂向位移比值的限值,来判定列车运行安全的评价指标,并通过仿真分析进行了验证,仿真结果表明了所提新的评判方法的可行性。

With continuous speed up,the train dynamic problems become more and more prominent,and how to evaluate and predict the safety of train operation is a focus of the current study.This paper analyzes the characteristics and shortcomings of the commonly used vehicle derailment evaluation standard in theworld.On the basis of studying the traditional safety evaluation criterion,the relationship between the geometric position about wheel and rail and the standard of traditional safety evaluation are analyzed.The evaluation index of the train running safety is determined according to the relative horizontal displacement and vertical displacement of the wheel and rail and the limit of the lateral displacement and the vertical displacement ratio.The simulation results show that the new judgment Method of feasibility.