Method Of High Speed Railway Passenger Flow Assignment Based On Train Timetable And The Computer System Design

The technology of passenger flow assignment in railway is the key technology in railway product planning,which can accurately reflect the matching degree between railway transportation supply and demand.besides,it can also provide scientific basis for the optimization of train timetable.Therefore,it is urgent to set up an efficient and practical system of passenger flow assignment to support the optimization of train line palnning and train timetable as well as to improve railway operation benefit.This paper treat the technology of passenger flow assignment as the focus to carry out relevant theoretical research,the main work of this paper is as follows:(1)Quantitative analysis on choice behavior of high-speed railway passenger.Based on analyzing the influencing factors of passenger choice behavior and stochastic utility theory,the behavior model of railway passenger is constructed.And this paper performe quantitative analysis and parameter calibration of selection factors according to survey data of small range and ticket data.(2)Research on route searching algorithm of passenger service network of high-speed railway.Based on the analysis of the traditional path search algorithm,this paper construct the service network of passenger travel,and focuse on the effective definition of service route parameter value of route search and other service path search key issues.Combined with the railway-related business rules,this paper use the stratigies of bi-directional search,contraction,goal-directed search,parallel search and come up with a parallel bidirectional breadth first route search algorithm,which can performe a large-scale and complex route search of service network fast and efficiently.(3)Research on passenger flow assignment of high-speed railway based on timetable.This paper study a model and algorithm of passenger flow assignment for high-speed railway According to the characteristics of high speed railway passenger flow and requirement of transportation organization,this paper focuses on the key problem of passenger flow assignment stratigies,such as the layer stratigies of different OD.From three aspects of passenger flow related indicies,train related indicies,train and passenger flow matching indicies,the corresponding index system is bulit to analyze and evaluate the results of passenger flow assignment from multi dimension.(4)Realization of passenger flow assignment system of high-speed railway and case study of fall road network.Combined with the above three aspects of theoretical research,the spring.Net framework is used to develop the assignment system.Moreover,the system implements the following four aspects of the function.First,OD service route search on full road network;second,superposition of passenger flow assignment strategy;third,multi dimensional display of passenger flow assignmet results and evaluation of passenger flow assignmet strategy;last,comprehensive comparison of passenger flow assignment results in different scenarios(assign stratigies).Finally,by using the data of March 7,2016 in the full high-speed network as well as the comprehensive comparison of assignment result under eight scenario,the effectiveness and practicability of the theoretical method and the system of passenger flow assignment are verified.