Research On Joint Operation Of Urban Rail Transit Under Different Operation Conditions

In the context of regional integration,multi-network integration between different rail transit systems is becoming an inevitable development trend.At present,the national railway,intercity,urban express line,subway and other rail transit networks across the country have achieved good transfer connections,showing the characteristics of coexistence and coordinated development of multiple networks.In the face of diversified transportation organization needs,realizing the joint operation of urban rail transit and regional rail transit has become one of the key problems in solving the integration of rail transit networks.Based on this,this article focuses on urban rail transit,supplemented by regional rail transit,and conducts research on the implementation of urban rail transit co-operation under different operating conditions.The content is as follows:(1)Explain the connotation of collateral operation,define the objects covered by collateral operation studied in this article,and summarize the characteristics and adaptability of collateral operation model through the classification of collateral operation and qualitative and quantitative analysis of the operating environment of collateral operation And the environmental factors required for specific implementation.(2)Consult the design specifications of urban rail transit and municipal railways,and use comparative analysis methods to analyze the existing problems and constraints in construction,matching of facilities and equipment,and operation organization in common-line operations,and combine research results in related fields to give feedback Specific measures and suggestions were put forward.(3)On the basis of drawing lessons from relevant research,the operation diagram cycle analysis method is used to study the passing capacity of urban rail transit co-line operation under different operating conditions,and the influence of different traffic conditions on the line passing capacity is discussed.The scheme for maximizing the passing capacity under the line crossing,combined with the calculation example,draws a conclusion: the multi-crossing co-line operation mode can improve the passing capacity of the collinear section to a certain extent,and it may also be due to the collinear distance or the operation organization to the line Passing ability has a negative impact.(4)Studying the optimization of multi-track and co-line operation plans affected by dynamically changing train frequency,number of train bases,and operating intervals of passing trains,and established an optimization with the goal of minimizing passenger travel costs and corporate operating benefits Model,and select NSGA-Ⅱ algorithm to solve according to the characteristics of the model,and design the solving algorithm in combination with the problem.The required result adopts the form of output Pareto solution set to form multiple schemes for operating companies to choose.(5)Taking a city’s urban rail transit line as an example,analyze the passenger flow changes of the line based on passenger flow data.The optimization model is solved through Matlab programming and the Pareto solution set is generated as the initial alternatives.The alternatives are compared and selected according to the optimization target preference,and a set of trade-off solutions are selected.Through the analysis of key indicators,it is concluded that compared with the original plan,the multi-way co-line operation plan can more effectively improve the line transportation efficiency and ensure the quality of service,and can control the increase in operating costs within an acceptable range.At the same time,the solution method using multi-objective genetic algorithm can effectively solve the problem of mutual coordination between different goals,and the problem and the solution method have good adaptability.