强侧向风作用下的高速列车动力学性能研究

Research on Dynamics Performance of High Speed Trains under Strong Lateral Wind

针对强侧向风下高速旅客列车运行安全性问题,利用SIMPACK软件建立了3车三维动力学仿真模型,根据已有的高速列车在侧向风下的空气动力学模拟计算得到的风载荷数据,分析了侧向风对列车在直道和曲线上动力学性能的影响。结果表明,列车的轮轨参数考察指标如轮轨横向力、脱轨系数及减载率等均显著增大,最大值均发生在头车。最后得出几种典型风速下直道和曲线上列车最高允许车速的参考值。

In view of the operation safety of high speed passenger trains under strong lateral wind,the 3-car three dimensional dynamics simulation model is set up with the use of the SIMPACK software.On the basis of the wind load data obtained in the aerodynamics simulation calculation for existing high speed trains under lateral wind,the effect of lateral wind on the dynamics performance of trains on tangent lines and curves is analyzed.The results show that the wheel-rail indexes of the train such as wheel-rail lateral force,derailment coefficient and reduction rate of wheel load have all increased obviously,and the maximum values all appear in the head car.In the end,the referential values of the maximum permissible speeds of trains on tangent lines and curves under several typical air speeds are obtained.