Coordinated Passenger Flow Controland Bus Connection Setting During Peak Hour Of Urban Rail Transit

With the development of Chinese urbanization and expansion of urban scale,urban rail transit(URT)has been developing rapidly to meet the huge travel demand of urban residents.With more and more responsibility for urban passenger transport,URT bears tremendous pressure.The large demand for passenger flow,centralized arrival time as well as obvious orientation during peak hours of URT lead to increasingly prominent contradiction between demand and transport capacity.The problem of passenger congestion and passenger detention is serious,which brings great hidden dangers to operation safety.Therefore,coordinated control of rail transit passenger flow from the line or network level to systematically improve transport performance is an important research direction.This paper studied the spatio-temporal characteristics of passenger flow in URT and put forward the corresponding calculation coefficients of passenger flow.According to the problem of passenger congestion caused by the contradiction between supply and demand in rail transit,a coordinated control strategy of passenger flow line in rail transit is proposed.And an optimization model with the maximum efficiency of inter-section transportation and the shortest delay time of passengers as the composite objective is constructed to solve the passenger flow control scheme.In addition,in order to suppress passenger flow spillover caused by passenger flow control in stations,the evaluation method of bus connection setting is proposed from the perspective of connecting travel time and passenger flow demand.Finally,taking the early peak hour of Nanjing Metro Line 1 as an example,this paper carried out a coordinated control strategy in multi-station and analyzed bus connection route.Results show that passenger flow control can effectively relieve the passenger flow transportation pressure in each section,balance the passenger detention in each station,and improve passenger travel satisfaction under passenger congestion.