基于滚动时域控制的轨道交通车站单站限流策略研究

doi:10.3976/j.issn.1002-4026.2023.01.013

Abstract

Abstract:

Aiming to resolve the problem of platform congestion in some high-load node stations, this paper establishes a mathematical model to optimize the average waiting time of passengers and formulates the corresponding traffic-limiting strategies. The model takes the minimum waiting time of passengers as the optimization objective and the number of restricted passengers per unit time at the entrance of the station as the decision variable. According to the behavior characteristics of passengers at different positions in the station, three constraint conditions related to traffic restrictions are formulated:platform capacity constraint, train capacity constraint, and traffic restriction area constraint. At the same time, this paper designs an algorithm based on receding horizon control to perform simulation.The results show that compared with the general strategy of traffic restriction, the algorithm exhibits clear advantages regarding the determination of the times of overruns and the number of passengers during overruns.The algorithm can effectively lower the times of overruns, reduce the number of passengers during overruns by 9% at the platform,and decrease the total passenger travel delay time by 11% without compromising the safety at the platform. This study can provide an effective reference for rail transportation traffic restriction.

Key words: urban rail transportation, receding horizon control, station traffic restriction, single station traffic restriction, decision model, solution algorithm, dynamic control

CLC Number:

U239.5

ZHAO Qingliang, FENG Xiaobin, WU Feng, WANG Yiduo. Single station traffic restriction strategy of rail transitstation based on receding horizon control[J].Shandong Science, 2023, 36(1): 99-106.

Figures/Tables 4

Fig.1

Table 1

Related parameters"

项目	符号	参数值
限流时段开始时,车站站台上已有人数	Q_qt(0)	100人
站台最大客容量	$Q p t m a x$	1 000人
列车到站时间间隔	Δt	3 min
列车的最大载客人数	$Q t r a i n m a x$	500人/列
列车满载率	θ_max	0.9

Table 1

Fig.2

Table 2

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对比项	未优化限流策略	优化限流策略	减少百分比
站台内平均候车人数/(人·h^-1)	835	751	10%
站台最高超限人数	1 100	1 004	9%
乘客总延误时间/min	173 487.3	154 403.7	11%

Single station traffic restriction strategy of rail transitstation based on receding horizon control

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