Coordinated Control Approach Of Multi-station In Urban Rail Transit During The Peak-hour Period

Urban rail transit(URT)is an important part of urban public transport system and an important way to serve the public for long-term,medium and short-distance travel.It has the characteristics of large traffic volume,fast speed,high safety,low carbon and environmental protection,and is of great significance in alleviating urban traffic congestion and realizing sustainable development of the city.However,the congestion of station passenger flow is the main problem of URT system in peak period.Coordinated control of URT multi stations is an effective way to solve the spatial-temporal imbalance of passenger flow distribution.First of all,by analyzing and summarizing the research status and problems in the development process of URT at home and abroad,it is pointed out that scientific and reasonable coordinated control of multiple stations is the prerequisite to improve the safety and efficiency of URT.Guided by problem driven,it clearly points out three current problems of URT,namely,the contradiction between passenger demand and capacity supply is prominent,the control scheme of passenger flow is single and backward,and the management of passenger flow in case of emergency.Based on the analysis of the time and space characteristics of URT peak passenger flow,the paper analyzes the line capacity,train transportation capacity and station facilities and equipment capacity.Secondly,the paper defines the objectives and basic principles of passenger flow control in URT peak period.Aiming at the single demand of passenger flow control means in URT peak period,this paper proposes a multi-station coordinated control model of peak passenger flow,which takes the minimum travel time delay of passengers and the minimum variance and proportion of passenger flow in the station as the objective function,and takes the capacity constraints of station facilities,the capacity constraints of station facilities and the passenger flow constraints of the section.The multi-station coordinated control model for peak passenger flow(MCCM)is solved by genetic algorithm.Finally,taking Ningbo Rail Transit Line 1 as an example,the MCCM model is empirically analyzed to verify the feasibility and effectiveness of the model method,and the multi station coordinated control scheme of peak passenger flow in line with the actual operation of the line is obtained.