Research On Evaluation Method Of Train Operation Diagram Of Urban Rail Transit Network

In recent years,China's urban rail transit has continued to develop vigorously.The rail transit network structure of many cities has gradually formed and become more complicated,and its daily operations have gradually transitioned to the network direction.Under the current conditions of network operation of rail transit,the relationship between rail transit lines is large,the network passenger traffic is growing fast,the peak full load rate is high,the peak passenger flow is fluctuating,and the passenger flow of each line is quite different.In order to meet the current complex needs,the preparation and evaluation of the rail transit train operation diagrams should pay more attention to the interconnection between the lines.this paper takes the actual background and demand of urban rail transit network operation as the starting point to study the methods,models and strategies for the quality assessment and adjustment optimization of network train operation diagrams.The main research work includes:(1)The comprehensive quality assessment and adjustment optimization method for the single-line train operation diagram of urban rail transit is studied.Analytical research on various aspects of the train operation diagram,including basic operation indicators,robustness indicators,adjustability indicators,train service quality indicators,and operational performance indicators.The data of these indicators are obtained by calculating the actual operational data.After that,based on scientific and reasonable principles,the evaluation index system was constructed.(2)Then,through the comparison of various evaluation methods,the expert consultation method,the tomographic analysis method and the gray comprehensive evaluation method are combined to establish a multi-level gray comprehensive evaluation model and specific method steps.Taking the data of the actual operation diagrams of Shenzhen Metro and the passenger flow data as the object,MATLAB is used for case analysis,and the quality and performance of the operation diagrams are comprehensively evaluated and analyzed,and the operation diagram adjustment optimization suggestions based on the evaluation results are given.The evaluation results of the case analysis verify the feasibility of the evaluation model.(3)Based on the complex network theory,the importance of the transfer station in the actual physical network is studied.Combined with the distribution ratio of the actual passenger flow in the transfer relationship,the importance formula of the transfer relationship relative to the rail transit system is constructed.The result can be used as the basis for the overall coordination of the network operation diagrams.The case study of the transfer relationship of Shenzhen Metro is carried out to verify the feasibility of the method.(4)The evaluation and optimization of the transfer effect of the connection of different trains at the transfer station is carried out.Based on the evaluation of the train connection effect of the train operation diagram of the transfer station,combined with the passenger flow of different transfer directions to analyze the importance of the train connection relationship and the corresponding evaluation indicators.The TOPSIS method is used to construct the evaluation model of the train connection effect of the transfer station and the corresponding solution method.The case analysis is carried out by MATLAB to verify the rationality and feasibility of the evaluation model.The main innovations of the paper are:(1)Combine the expert consultation method,the tomographic analysis method and the gray comprehensive evaluation method,and establish a multi-level gray comprehensive evaluation model and specific method steps to evaluate the quality of the urban rail transit single-line train operation diagram.Based on the analysis of the evaluation results,the method of adjustment and optimization of the operation diagram is given.(2)In the evaluation of network operation diagrams,combined with the passenger flow of different transfer directions to analyze the importance of the train connection relationship and the corresponding evaluation indicators.The TOPSIS method is used to construct the evaluation model of the train connection effect of the transfer station and the corresponding solution method.This paper analyzes the evaluation results and proposes methods of the train operation diagram adjustment.