轨道交通车挡合理占线长度分析  

Analysis of Reasonable Length of Track Occupancy by Buffer Stops in Rail Transit Systems

作　　者：焦丽莉[1] 乐云凯 Jiao Lili;Yue Yunkai

机构地区：[1]上海市隧道工程轨道交通设计研究院

出　　处：《隧道与轨道交通》2024年第3期22-25,74,共5页Tunnel and Rail Transit

摘　　要：当轨道交通车辆意外失控而撞击车挡时,如何保证乘客和轨道交通车辆安全、减少车挡损毁,同时尽可能缩短车挡占用的线路长度,是必须充分重视的问题。介绍了车挡占线长度对土建规模的影响,通过分析车钩及车挡的受撞击吸能过程,计算了不同工况下基于车辆与基于乘客因素承受25 km/h撞击速度的车挡占线长度。对《城市轨道交通工程项目规范》(GB 55033—2022)颁布后的车挡占线长度给出了合理化建议。When rail transit vehicles unexpectedly lose control and collide with buffer stops,how to ensure the safety of passengers and vehicles while minimizing damage to the buffer stops and reducing the length of track occupied by the buffer stops is a critical issue.The impact of track occupancy by buffer stop on civil works scale is introduced.By analyzing the energy absorption processes of couplers and buffer stops upon impact,the track occupancy lengths of buffer stops is calculated based on different scenarios where vehicles and passengers can withstand impacts at a speed of 25 km/h.Reasonable suggestions are provided for the length of track occupancy by buffer stops following the "Project code for engineering of urban rail transit"(GB 55033—2022).

关 键 词：轨道交通 撞击 车钩 车挡 合理占线长度 

分 类 号：U239.5[交通运输工程—道路与铁道工程]