轮轨力在轨道短波不平顺检测中的应用

轨道良好的平顺性是车辆运行舒适安全的保证。轨道短波不平顺的波长短、幅值小,但在高速条件下能够引起轨道-车辆系统高频振动,降低轨道-车辆系统部件的使用寿命,目前尚无有效的轨道短波不平顺检测技术手段。根据轨道短波不平顺引起动态轮轨力响应特征,在分析轮轨力检测数据的基础上,提出从轮轨动态作用"能量"的角度评价轨道短波不平顺的方法,达到准确高效查找轨道短波不平顺病害的目的。该研究成果可为高速铁路轨道短波不平顺的整修管理提供参考依据。

Application of the Wheel-rail Force in Track Short Wave Irregularity Detection

Track regularity in excellent condition is very important for safety and comfort. Track short wave irregularity with short wavelength and small amplitude can cause track-train high frequency vibration under high speed conditions,shortening the service life of the components of track and train. There is no effective track short wave irregularity detection technology at present. According to the dynamic response characteristics of wheel-rail force caused by the track short wave irregularity,a method was proposed to evaluate the track short wave irregularity in terms of the dynamic interaction energy between wheel and rail through the analysis of wheel-rail force detection data.W ith this method,the damage of the track short wave irregularity may be found accurately and efficiently.The research may provide guidance for the repair and management of the high speed railway track short wave irregularity.