Toughness Evaluation And Flexible Planning Of Operation Organization Of High-speed Railway Passenger Hub Station

High-speed railway passenger station is a highly comprehensive system,which involves the parking or passing operation of trains and the boarding and landing operation of passengers.The operation plan of train stopping or passing at the station is not only an important part of the train diagram,but also an important guarantee to complete the orderly boarding and landing of passengers.Generally,the train operation plan consists of station route allocation and arrival departure track use scheme,which is affected by the number of service trains,throat layout and the number of arrival departure tracks.In addition,it is also affected by complex risk factors such as environment,personnel and equipment,such as delayed train arrival,throat annunciator failure and etc,which interfere with train operation,facilities and equipment frequently.Therefore,study and evaluate the system toughness under normal and disturbed conditions,then based on the demand for toughness,realize flexible preparation and adjustment of station operation plan.It is of far-reaching significance to improve the stable operation ability,risk resistance performance,risk adaptation performance and recovery performance after disturbance of the station system.Firstly,this paper studies the operation organization theory of high-speed railway passenger transport hub.Analyze the station layout,technical operation processes and time of train departure,arrival,turn back and passing.Construct the station topology network.According to the use rules of arrival departure track,prepare the route table of receiving and departure trains and trains in and out of the depot.Analyze the connection relationship and conflict relationship between the receiving departure track and the turnout group equipment in the throat area.Summarize the three major factors causing disturbance: environment,man-made and equipment.Classify the main objects of disturbance: train operation disturbance and station equipment disturbance.Lead to the generation of toughness requirements,provide sufficient theoretical support for route optimization.Then it evaluates the toughness of the operation organization of high-speed railway passenger transport hub station.Theoretical analysis is made on the operation organization toughness of high-speed railway passenger transport hub station,define the concept of toughness and its four connotations: stability,vulnerability,adaptability and resilience,put forward the quantitative calculation method of toughness index,select 4primary indicators and 9 secondary indicators,build a toughness evaluation index system for the operation organization of high-speed railway passenger transport hub stations.The toughness evaluation method based on entropy weight TOPSIS is used for calculation,and the evaluation results put forward the toughness demand and improvement direction for the preparation of station operation plan.Finally,the flexible operation planning and adjustment model of high-speed railway passenger hub station is constructed.Based on the toughness requirements of station operation organization,on the premise that the train timetable and station layout plan are known,aiming at the economy,balance and redundancy of arrival departure line and throat area,build a fully flexible operation planning model.In case of train operation disturbance and station equipment disturbance,the objective is to minimize the delay time and the change of the initial scheme,build part of the flexible operation plan adjustment model.A Pareto frontier solution method based on two-stage method is designed to achieve multi-objective solution,reasonably solve the optimization problem of route allocation,improve the station capacity and reduce the propagation of disturbance.Taking the 116 train at 16-21 o’clock in Jinghu yard of Xuzhou East Railway Station as an example,this paper uses MATLAB to call gurobi for solution,and uses anylogic simulation to generate a random scheme as the control group.Change the action object and disturbance duration,impose different types of disturbances on station operation.The example shows that after the flexibility optimization,the comprehensive toughness level of Beijing Shanghai yard of Xuzhou East Railway Station has increased by 23.68%,stability,adaptability and recoverability have also been significantly improved.There are 36 figures,27 tables and 66 references in this paper.