Research On Dynamic Matching Optimization Of Train Operation Plan And Passenger Flow Demand Of Inter-city Railway

With the acceleration of the urbanization process,the integrated metropolitan circle with central cities as the core is rising strongly,and inter-city railway as a large volume,public transportation,fast and timely,green and safe transportation mode perfectly meets the development needs of the metropolitan circle.However,the traditional train operation plan based on the prediction of passenger flow is difficult to adapt to the change of dynamic passenger flow,which makes the problems of resource utilization efficiency and transportation service level become increasingly significant.Therefore,it is particularly necessary to dynamically monitor and adjust the matching between the development plan and passenger flow demand after the preliminary preparation of the development plan and before the promulgation and implementation,so as to give full play to the social and economic benefits of inter-city railway and achieve a win-win situation between the operator and the passenger side.In order to realize the dynamic matching between train operation plan and passenger flow demand of inter-city railway,the thesis firstly summarizes the research status of train operation plan and passenger flow demand at home and abroad,and clarifies the research direction,purpose and content of the thesis.Then,based on the basic theory of operation plan and passenger flow demand and their interaction mechanism,the connotation of matching is put forward,and the dynamic matching of the two are defined and defined.At the same time,combined with the principle of system control and outlier test,the dynamic matching mechanism based on feedback-forward control between operation plan and passenger flow demand is designed and the function analysis is carried out,thus guiding the direction of the subsequent passenger flow allocation,operation plan evaluation and optimization model construction.(1)For the passenger flow distribution,under the given operation plan to establish generalized travel cost for the path to passengers impedance train service network,stochastic user equilibrium traffic assignment model was constructed based on the network,and combining the back through effective path search,Logit model to simulate the passengers with MSA assignment algorithm on behavior in the train.(2)For the matching evaluation,the thesis establishes the matching evaluation index system from the three aspects of capacity utilization,service level and transportation benefit.According to the characteristics of the indexes,factor analysis method and entropy method are combined to determine the weight of the indexes,and TOPSIS method is adopted to carry out the final comprehensive matching evaluation.At the same time,considering the requirements and characteristics of each index data,the dynamic matching mechanism is visually improved by referring to the design principle of sliding time window.(3)For the operation plan optimization and adjustment based on the analysis of the feasibility of the model as the objective function,the assessment model,the passenger flow distribution model and unified in the running model,building to match and aimed at the optimal adjustment quantity integrated plan of the upper adjustment model,the minimum total impedance network path as the target of the bi-level optimization model for the bottom of the passenger flow distribution model,The adaptive immune cloning algorithm with faster convergence and stronger global and local search ability is used to solve the problem.Finally,the thesis takes into railway in September 2019,the operation plan with passenger demand data as an example,its suitability for dynamic monitoring and adjustment,the adjusted operation plan and matching of passenger traffic demand on the basis of the original significantly increased 0.3,contrast is verified in the thesis,the dynamic matching mechanism and function of constructed scientific nature,rationality and validity of the model,It provides new ideas and methods for the formulation and adjustment of other intercity railway operation schemes.