Congestion subway line passenger flow coordination control method based on space-time network

Abstract

The invention belongs to the technical field of urban rail transit, and relates to a congested subway line passenger flow coordination control method based on a space-time network. According to the method, train space-time tracks, dynamic requirements of all OD passengers, the train loading capacity, passenger path selection, the waiting time and the like under a set running chart are comprehensively considered, on the premise that an existing running chart is not affected, passenger travel is optimized, safe and efficient operation of rail transit is guaranteed, the passenger waiting time isshortened, and rail transit resources are balanced. Specifically, through a time discretization method, on the premise of determining a running chart, a train running space-time network is constructed, a passenger flow control problem is converted into a passenger travel time selection problem, and a mathematical optimization model for accurately describing the problem is established. Furthermore,the model is converted into a travel shortest path selection problem based on individual passengers by means of a Lagrange relaxation method, an algorithm for solving the problem is designed, and a rail transit line collaborative current limiting strategy under a given running chart is efficiently solved.

Description

technical field [0001] The invention belongs to the technical field of urban rail transit, and relates to a method for coordinating and controlling the passenger flow of congested subway lines based on a space-time network, in particular to a method for optimizing and controlling the coordinated passenger flow of subway lines under a predetermined operating diagram. Background technique [0002] At present, the urban rail transit system is playing an increasingly important role in alleviating traffic congestion in large cities due to its punctuality, convenience, large capacity and low emissions. However, with the expansion of the operation scale of the subway system, the demand of passengers using the subway as a way of travel in big cities is also growing rapidly. Taking the Beijing subway system as an example, the number of passengers served by the Beijing subway has shown a trend of rapid growth in recent years. According to statistics, in 2007, the total passenger flow...

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Problems solved by technology

[0004] However, due to the complex coupling relationship between passenger flow and train flow, in practice, the passenger flow control measures taken by the operation department are usually carried out independently based on professional and empirical judgments, without fully considering the interaction between passenger flow and vehicle flow between different stations. Functional relationship

At present, most existing current limiting strategies are based on stations and platforms, and less consideration is given to the individual travel behavior of passengers on the entire subway line. As a result, the control strategy adopted is usually only a better control strategy for a single station, and it is difficult to achieve the goal of the entire subway operation. system optimal policy

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