大规模城市轨道交通网常态限流方案编制

    Regular Inflow Control Plan Construction in Large Urban Rail Transit Networks

    • 摘要: 为了给大规模轨道交通网高峰时段常态限流方案编制提供科学的计算依据,提出一种基于运输能力瓶颈反馈疏解策略的限流方案构造算法.算法核心思想为"溯源",即对流经运输能力瓶颈区间的主要客流源头站实施有效控制,从而达到疏解能力瓶颈区间的目的.该算法以车站进站客流与区间通过客流内在关系为基础,利用反馈机制对路网能力瓶颈区间进行疏解,反向确定限流车站、限流时段及限流强度.方案构建过程中充分考虑了路网能力瓶颈间关联性、多个车站间控制协同性、以及控制时段间需求的传递性,实现限流方案的科学、高效编制.基于所提出算法开发了轨道交通限流组织决策支持系统,以2017年北京地铁网为对象进行实证研究,结果显示:所构建算法能高效编制限流方案,通过与实际限流方案实施后的断面量对比评估,表明所构建方案能有效降低乘客进站延误时间,验证了算法的合理性和准确性.该研究能够为轨道交通网络层常态限流方案编制提供理论与方法支撑,具有良好的实际应用价值.

       

      Abstract: An algorithm for constructing inflow control plans based on a capability bottleneck feedback-relief strategy was proposed in this work, aiming at programming a regular inflow control scheme for large-scale rail transit networks during peak hours. The core idea of the algorithm is "source tracing", which is to control major stations where inflows travelling through the capacity-bottleneck section, so as to relieve congestion of the bottleneck section. The algorithm based on the intrinsic relationship between the station passenger flow and section flow uses the feedback mechanism to unravel the bottleneck and then determines the target control station, control period and control strength in reverse. In construction processes, the correlation among multiple bottlenecks of the network, the coordination control of stations, and the transitivity of the demand during the control period were fully considered to achieve a scientific and efficient formulation of the inflow control solution. A decision support system based on the proposed algorithm and the Beijing subway network in 2017 was conducted in the empirical study. Results show that the algorithm can efficiently formulate inflow control schemes. Compared to actual section flows between the constructed plan and the real control scheme, it is shown that the proposed scheme can effectively reduce travel delay time of passengers and verify the rationality and accuracy of the algorithm. This study provides theoretical and methodological supports for inflow control organizations and has a nice promotion and application value.

       

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