基于ASME RT-2—2014《重型轨道交通车辆结构设计的安全标准》的地铁车辆底架结构设计

底架结构是城市轨道交通车辆车体结构设计中最重要且难度最大的部位。基于纽约资质审查项目(NYCT),从端底架吸能结构、底架边梁、底架中梁及整体结构等方面阐述了基于ASME RT-2—2014《重型轨道交通车辆结构设计的安全标准》的地铁车辆底架结构的设计方案和设计重点。阐述了所应用的碳钢及不锈钢材料的机械性能及焊接标准,对底架钢结构进行了静强度、吸能计算及相关试验验证。结果表明,底架的强度、刚度和吸能值均满足车辆设计要求。

Metro Vehicle Underframe Structure Design Based on ASME RT-2-2014 Safety Standard for Structural Requirements for Heavy Rail Transit Vehicles

Underframe structure is the most important and most difficult part in urban rail transit vehicle body structure design.Based on the NYCT Qualification Project,metro vehicle underframe structure design scheme and key points formulated from ASME RT-2—2014 Safety Standard for Structural Requirements for Heavy Rail Transit Vehicles are expounded from the perspectives of end underframe energy absorption structure,underframe side beam,underframe middle beam and the whole structure.The mechanical properties and weld standard of the applied carbon steel and stainless steel material are described,and static strength numerical computation,energy absorption numerical computation and relative experimental verification are carried out on underframe steel structure.Results show that the static strength value,stiffness and impact energy absorption value of underframe structure all meet the needs of vehicle design.