地铁线路控制钢轨波磨的钢轨打磨技术应用研究

Study on application of the rail grinding on controlling the corrugation in metro

介绍了国内轨道交通工具轮轨形面匹配的情况和存在的问题。基于多体动力学软件(SIMPACK)建立了地铁车辆的动力学模型。首先,利用SIMPACK的前处理功能导入标准的钢轨型面和设计后的钢轨型面,及实测的现场线路数据,作为仿真计算的输入。然后以轮轨横向力、垂向力以及脱轨系数为例,对打磨前后钢轨对车辆动力学响应进行了分析。比较了在相同车轮型面和实测线路不平顺条件下,采用标准钢轨型面和设计型面对地铁动车的动力学响应。计算结果表明,在相同激扰条件下,使用设计钢轨型面的轮轨垂向力、横向力大大的减小。

This paper introduces the existence of the domestic rail transport rail-shaped surface of the wheel matches the situation and problems. The dynamic analysis model of metro vehicle is set up by automated dynamic analysis of mechanical system SIMPACK software. Firstly, used preprocess of the SIMPACK deal with the standard rail profile and design of rail profiles and the field lines and measured data input the simulation model. Secondly, the vehicle dynamic response is analyzed after the rail grinding, which is wheel-rail lateral force, vertical force and derailment coefficient. Compared the wheel surface and measured the same uneven track conditions, the use of standard rail profile and design of rail profile of the dynamic response of the MTR EMU. The results show that the same excitation conditions, the use of the design rail profile of the wheel-rail vertical force, lateral force greatly reduced