基于动力学仿真计算的AH型车限界研究

Research on AH-model Vehicle Clearance Based on Dynamics Simulation Calculation

[目的]AH型车集合了A、B型车的特点,因其结构与传统地铁车辆有着一定的差异,目前我国尚无对应的限界标准,故需要对其限界开展计算研究。[方法]基于动力学SIMPACK软件的方法,以AH型地铁车辆为例,分析了横风风速对动态偏移量的影响,并与CJJ/T 96—2018《地铁限界标准》的计算方法进行对比分析。[结果及结论]计算结果表明:横风对地铁车辆横向偏移具有较大影响,而用动力学SIMPACK软件的方法计算得到的车辆动态位移相对较小;依据2种车辆动态包络线计算结果,推导了AH型车限界及设备限界的制定方法,得出了AH型车推荐的车辆限界。该方法目前已成功应用于国内3条地铁线路限界。

[Objective]The AH-model vehicle combines the characteristics of A and B type model vehicles.Due to its structural differences from conventional metro vehicles,there are currently no corresponding standards on vehicle clearance in China at present,thus it is necessary to carry out clearance calculation research.[Method]Using the dynamic simulation method based on SIMPACK software,the influence of crosswind speed on dynamic lateral offset is analyzed with AH-model metro vehicle as example.A comparative analysis of the calculation method specified in CJJ/T 96—2018 Standard for Metro Gauges is conducted.[Result&Conclusion]The calculation results indicate that crosswinds have a significant impact on the lateral offset of metro vehicles,while the dynamic displacement calculated by using dynamics SIMPACK software method is relatively small.Based on the results of the two kinds of vehicle dynamics envelope,the formulation method of AH-model vehicle clearance and equipment gauge is deduced,and the recommended vehicle clearance for AH-model is obtained.The method is successfully applied to the clearance of three metro lines in China.