基于乘客服务水平和安全的城市轨道交通扣车方案评价

Evaluation of Train Holding Strategy Based on Passenger Service Level and Safety in Urban Rail Transit

[目的]扣车是城市轨道交通发生长时间初始延误条件下经常采用的列车运行方案。为了评价该方案的合理性,需构建基于乘客服务和安全的扣车方案评价模型,并对扣车方案进行评价。[方法]考虑到乘客出行规律的复杂性和特殊性,制定了城市轨道交通扣车方案。构建了基于最大发车间隔、列车总延误时间、列车均衡性、终到延误列车数、滞留乘客数及乘客总旅行时间的扣车方案评价模型。选取上海某条轨道交通线路的4个区间,以早高峰小时的实际OD(起讫点)客流量为例进行计算。[结果及结论]计算表明,方案6下的综合评价指标最小,为最优扣车调整方案。该方案可以有效提高列车运行图的均衡性,减少滞留乘客的数量,降低车站的安全隐患。

[Objective]Holding train is a train operation scheme often used in urban rail transit under the condition of long initial delay.In order to evaluate the rationality of the scheme,it is necessary to build an evaluation model and evaluate the train holding scheme based on passenger service level and safety.[Method]Based on the complexity and specialty of passenger travel law,a train holding scheme in urban rail transit is formulated.The train holding evaluation model is built on the basis of maximum departure interval,total train delay time,train evenness,the number of delayed trains at the terminal,the number of detained passengers and passengers′total travel time.Four sections of one urban rail transit line in Shanghai are selected to calculate the actual OD(origin and destination)passenger flow in morning peak hours.[Result&Conclusion]The calculation shows that scheme 6 is the optimal train holding adjustment scheme as it has the smallest comprehensive evaluation index.This scheme can effectively improve the evenness of the train operation diagram,and reduce the number of detained passengers,and lower safety risks at the station.