轨道整体刚度对车辆和轨道动力性能的影响

Inf luence of Track Integral Stiffness on Vehicle-track Dynamic Performance

以车辆-轨道耦合动力学理论为基础,结合移动式线路动态加载试验车在京广高铁线路测试的试验数据,利用有限元软件ANSYS和多体动力学软件SIMPACK建立联合仿真模型,分析运行速度为200,250,300,350 km/h时,不同轨道整体刚度下车辆和轨道的动力性能。计算结果表明:车辆运行速度为300 km/h时,轨道整体刚度宜控制在75~100 k N/mm;车辆运行速度为250或200 km/h时,轨道整体刚度宜控制在65~100 k N/mm。研究结果可为高速铁路线路的养护维修更加合理的轨道刚度设计提供依据。

Based on the vehicle-track coupling dynamics theory, combined with the test data of the mobile track dynamic loading test vehicle in Beijing-Guangzhou high speed railway line, an ANSYS-SIMPACK co-simulation model was built. The dynamic performances of vehicle and track with different track integral stiffness under speeds of 200,250,300,350 km/h were calculated. The results show that the track integral stiffness should be controlled at 75 - 100 kN/mm when the vehicle running speed is 300 km/h, and the track integral stiffness should be controlled at 65 - 100 kN/mm when the vehicle running speed is 250 or 200 km/h. The results can provide the basis for the maintenance and more reasonable design of track stiffness of Beijing-Guangzhou high speed railway line.