地铁线路曲线半径和列车速度对轮轨磨耗的影响

Influence of Curve Radius and Train Speed on Wheel/Rail Wear on Metro Line

利用车辆-轨道耦合动力学理论,建立了地铁线路曲线区段车辆与轨道耦合动力学模型,以轮轨磨耗功为评价指标,分析了线路曲线半径和列车速度对轮轨磨耗的影响。仿真计算结果表明:曲线半径越小,车辆轮轨磨耗功越大,轮轨磨耗功出现振荡时往往会产生轮轨严重磨耗;在曲线半径和超高设置一定的情况下,列车速度越大,轮对的轮轨磨耗功越大。

Based on the theory of vehicle-track coupled dynamic,a model of vehicle-track coupled system is developed on a section of metro curve line.With the wheel/rail wear power as an evaluation indicator,the influence of curve radius and train speed on wheel/rail wear on metro line is analyzed.A simulation result shows that the smaller curve radius will cause more wear power of the wheel/rail system,while in oscillation of wheel/rail wear power,the wear will become even serious.In certain condition of curve radius and super-elevation,higher speed of the train will induce severer wear of the whole train and wheelset.