Theory And System For Passenger Flow Assignment Based On The High-speed Railway

Passenger flow assignment of high-speed railway is an important part of the planning of passenger transportation products.It is an important means to evaluate the matching relationship between supply and demand of railway transport as well as an crucial way to adjust and optimize passenger transportation products.Passenger flow assignment based on line plans is an reasonable methodology to test if the line plan matches the passenger demand.which is of great significance for the optimization and adjustment of the train line plan and the design and train timetable.Therefore,this thesis focus on the theoretical study of line plan-based passenger flow assignment in large-scale railway network,completed the computer system development of passenger assignment.The main work of this thesis is presented as follows:(1)Research on the service route of high-speed railway passengers.Firstly,based on the theory of complex service network,a passenger travel service network based on the train line plan is constructed,based on which an evaluation index system of station transfer importance is developed to generate the alternative set of passenger travel transfer stations.Secondly,the definition of passenger travelling service route is given.Finally,The route searching algorithm based on arc enumeration is designed,which applies to the solving the passenger travel route under large-scale network.Also,a number of optimization acceleration strategies such as goal orientation,network reduction,and evaluation pruning are designed to solve the problem.(2)Research on passenger flow assignment based on line plan.Firstly,this thesis analyzes the main characteristics of high-speed railway passenger flow assignment,putting forward the concept of passenger flow assignment priority,and constructs the priority sequence of passenger flow assignment from the aspects of time-varying demand intensity and passenger flow attributes.Secondly,based on the analysis of passenger selection behavior,improved MNL model and multi-objective passenger flow assignment model are used to study the passenger flow assignment technique based on line plan.Solving algorithm of the model such as tolerant hierarchical sequence method is designed to solve the problem.(3)The optimal design of high-speed railway passenger flow assignment system.In this thesis,based on the relevant theoretical research of passenger flow assignment,the system data and functional requirements are analyzed in detail.The main framework structure,main categories,functions and data structure content of the system implementation are proposed.Finally,based on the.Net platform,the high-speed railway passenger flow assignment system including system data management,transfer organization analysis,route search and passenger flow assignment is designed and developed.(4)Case study and validation of system practicability.Based on these proposed theorems and the corresponding computer system,it is proved that the passenger flow assignment model and algorithm studied in this thesis can match the travel demand of passengers to a certain extent,improving the efficient of transportation capacity,which is of great significance for the optimization and adjustment of the train line plan,as well as improvement on the formulation of transportation organization and control strategy.The passenger flow assignment system developed in this thesis has a better effect on solving the large-scale passenger flow assignment problem,and provides an intelligent auxiliary tool for the research of related problems.