基于灵活编组模式的城市轨道交通列车通过能力分析

Analysis of Urban Rail Transit Train Passing Capacity Based on Flexible Formation Mode

为提高城市轨道交通运能与运量的耦合度,解决非高峰时段列车满载率低的问题,提出了列车灵活编组模式。结合城市轨道交通线路客流在时间上的不均衡性,对灵活编组模式进行了需求分析。通过对信号系统和车辆网络传输作业的分析,研究了列车解体和编组作业流程,得出列车解体和编组作业时间分别为84.2 s及103.2 s。结合全日客流时段的形态分布,提出城市轨道交通列车灵活编组转换衔接方案,建议早高峰前采用列车以小编组形式出段运行,高峰转非高峰过渡时段采用正线上列车解编的方式。针对高峰转非高峰过渡时段内列车不同运行场景,以“3辆编组A型车+3辆编组A型车”灵活编组列车为例,通过铺画车站作业图的方法进行列车通过能力分析,验证了灵活编组模式下正线上列车解编作业可以满足过渡时段的列车通过能力需求。对灵活编组条件下的重联列车中部不贯通的疏散问题,以及极限状态下列车救援问题进行了研究,提出了解决方案。城市轨道交通列车灵活编组模式可提高行车组织与客流时间分布的匹配度。

In order to improve the coupling degree between urban rail transit transportation capacity and traffic volume,and to solve the problem of low train load factor during non-peak hours,a flexible train formation mode is proposed.Based on the temporal uneven distribution of urban rail transit line passenger flow,a demand analysis is conducted on the flexible train formation mode.Through the analysis of signaling system and vehicle network transmission operation,the process of train disintegration and formation is studied,and the operation time of train disintegration and formation is obtained to be 84.2 s and 103.2 s respectively.Considering the morphological distribution of passenger flow throughout the day,a transition scheme for the urban rail transit train flexible formation mode is proposed.It is suggested to use small formation trains departing from depot for the period before morning peak hours,and to use train disintegration on the main line during the peak-to-non-peak transition period.Targeting the different train operation scenarios during the peak-to-non-peak transition period,taking the′3-car formation A-type vehicle+3-car formation A-type vehicle′flexible formation train as an example,train passing capacity is analyzed by drawing station operation diagrams,which verifies that train disintegration operation on the main line could meet the requirements of train passing capacity during transition period under flexible train formation mode.Research is also conducted on the problem of coupled train middle non-through for evacuation under the above mode and the problem of train rescue under extreme conditions,and corresponding solutions are proposed.The flexible train formation mode of urban rail transit can improve the matching degree of traffic organization and passenger flow temporal distribution.