Research On Urban Rail Transit Train Plan Under The Condition Of Interconnection And Network Operation

The rapid development of the urbanization process puts a severe test on the urban public transportation system,and rail transit bears a large number of residents' travel traffic due to its advantages of fast speed,large capacity and punctuality.Faced with the increasingly diversified travel needs of passengers,a multi-level rail transit operation system is also being constructed.The interconnected network operation has become a research hotspot as an effective way to solve the time and direct needs of passengers during travel.One mode of interconnected networked operation is the train cross-line operation,so that passengers who travel OD on different lines can be reached without intermediary station transfers.Therefore,this article combines the research situation of relevant scholars at home and abroad,and conducts in-depth research on the optimization of the train operation plan of the following vehicle cross-line operations under the interconnected network operation conditions.The specific contents are as follows:(1)Analysis of the composition content and determinants of the train operation plan.According to the characteristics of networked operation,the factors affecting the development of the following train operation plan are discussed in terms of passenger flow demand,driving conditions,and economic factors.Sort out the key optimization links of the train operation plans in a networked operating environment,and propose the objectives and constraints of the optimization model in this paper.(2)Analysis of interconnected and networked train operation organization.Summarize the characteristics and connotation of the interconnected networked operation,and specify the requirements for networked operation at the train and station level.Discuss the necessity of networked trains running from the perspectives of resource utilization,service level improvement and operation pressure reduction.With the aim of saving passenger travel time,the implementation conditions for the operation of cross-line trains are determined by exploring the relationship between cross-line passenger flow and main line passenger flow,and the relationship between inter-vehicle interval and transfer time.(3)The optimization analysis of the following vehicle driving schemes under interconnection and network conditions.Taking "the least travel time of passengers,the least number of undercarriage pairs,and the least number of train kilometers" as the optimization goal,an optimization model for urban rail transit multi-directional cross-line train operation under the condition of interconnection and network operation is proposed;combined with the direction of passenger flow equilibrium,the cost of train air fare is proposed as one of the model effect evaluation indicators.And design a heuristic algorithm combining genetic algorithm and simulated annealing algorithm to solve the model.(4)Taking the local line network of Chongqing Rail Transit Line 4 and Line 9 as actual cases,the model is solved and the result is analyzed using the solving algorithm.Analyzing and comparing the optimal scheme obtained by the algorithm with the existing operation schemes of the line,the total cost optimization rate is 2.1%;at the same time,comprehensively comparing other operation schemes,the optimization scheme in this paper is also superior to other operation schemes and can effectively reduce Passenger travel time and enterprise operating costs verify the effectiveness of this model.Carry out sensitivity analysis on four factors: the proportion of the interests of the operator and passengers,the line passing capacity,the location of the cross-line turn-back station,and the ratio of the cross-line and the local line train operation.Improve the adaptability and give suggestion with a view to the implementation of networked operations in the future.There are 31 pictures,31 tables and 74 references.