衡柳线动车组车体异常晃动问题研究

Research on the Problem of Abnormal Shaking of EMU Carbody on HengLiu Line

针对衡柳线部分运营动车组出现的车体晃动问题,项目组添乘了衡柳线运营动车组,定位出车体晃动区段,并对轮轨匹配关系进行测试与分析。通过将实测到的车轮踏面廓型和钢轨廓型数据导入仿真软件,仿真分析发现引起衡柳线晃车的主要原因为钢轨的过打磨导致旋修后车轮踏面与钢轨接触关系恶劣,引起了车体1～2Hz的低频晃动。通过对钢轨重新打磨,建立工务、车辆联合沟通机制,解决了衡柳线晃车问题。

With regard to abnormal shaking problem happened on EMU carbody in Hengliu railway line, related EMU Operation Team tests and analyzes wheel-rail contact relationship after located shaking position of the EMU trains. By importing the measured wheel tread and rail profile data into the dynamic software, the simulation analysis shows that the main reason for carbody shaking of HengLiu line is the over-grinding of the rail profile leads to poor contact between newly repaired wheel profile and rail tread, which caused low frequency shaking of 1-2hz of the carbody. Through the re-grinding of the rail profile, established the joint communication mechanism between track and vehicle, the shaking problem of HengLiu line was solved.