西南交通大学学报2025，Vol.60Issue(3)：714-721,8.DOI:10.3969/j.issn.0258-2724.20230573
地铁梯形轨枕轨道钢轨波磨成因研究
Cause of Rail Corrugation on Ladder Sleeper Track
摘要
Abstract
To study the formation mechanism of inner rail corrugation on the ladder sleeper track in the small-radius curve,a finite element model of the leading wheelset-ladder sleeper track system was developed based on the theory that self-excited frictional vibration triggered by saturated wheel-rail creep force causes rail corrugation.In this model,solid elements were used to model the fastening system.Complex eigenvalue analysis and transient dynamic analysis were applied to solve the motion stability and dynamic time-domain response of the wheel-rail system,respectively.Furthermore,the effects of the parameters of the cushioning pad and ladder sleeper structure on the self-excited frictional vibration of the wheel-rail system were studied.The results show that the self-excited frictional vibration with a frequency of 150 Hz caused by the saturated wheel-rail creep force is the cause of inner rail corrugation on the ladder sleeper track in the small-radius curve section.The predicted corrugation wavelength is 69 mm,which agrees well with the measured wavelength.Parameter sensitivity analysis shows that increasing the damping of the lateral cushioning pad and laying ladder sleepers with a spacing of 1.25 m between lateral steel pipes can suppress rail corrugation on the ladder sleeper track to a certain extent.关键词
钢轨波磨/梯形轨枕/摩擦自激振动/复特征值分析Key words
rail corrugation/ladder sleeper/self-excited frictional vibration/complex eigenvalue analysis分类
交通工程引用本文复制引用
宋启峰,陈光雄,董丙杰,张峻才,冯晓航..地铁梯形轨枕轨道钢轨波磨成因研究[J].西南交通大学学报,2025,60(3):714-721,8.基金项目
国家自然科学基金项目(52175189) （52175189）
