The Study On Operation Organization Of Urban Rail Transit Of Express/Local Train

With the expansion of urban scale and the growth of urban residents' travel demands,there are more and more urban rail transit long lines which gradually formed.The traditional all-stop scheme operation cannot fully meet with passengers' diverse demands due to the unbalanced passenger flow and large proportion of long distance passengers along the urban rail transit lines.Compared with the traditional operation,express/ local operation is a new one that requires operating certain proportion of skip-stop train based on operating all-stop train.The mode of express/local train can not only solve the urban traffic congestion and meet with passengers' diverse demands but also reduce the enterprises' cost and improve the service level of urban rail transit.Based on the concluded successful operation experience from China and foreign countries,this paper analyzed the organizational conditions and overtaking problems of express/local train from the theoretical perspective.The objective of established optimization model of the express/local train stop schedule was to maximize the interests of both passengers and companies,and the genetic algorithm was to solve the model.Here are five parts of the study:(1)The concept of express/local train operation mode was expounded,the advantages and disadvantages of express/local operation were analyzed from the view of passengers and companies.This paper summarized the classifications of express/local train operation mode,and the cases at home and abroad of express/local train were analyzed in detail from the aspects of line profile,train stop and station track.(2)This paper summarized the organizational conditions of express/local train operation mode base on passenger flow and line.What's more,this paper discussed the other related factors of operation organization of express/local train systematically.(3)Both time velocity curve and change of train energy consumption of express/local train were studied by simulation technique,and time benefits and economic benefits between express train and local train were analyzed.This paper analyzed the overtaking of express/local train include condition,position,numbers and station track of overtaking stations.(4)marshalling scheme and routing form of operation organization of express/local train were analyzed,this paper established optimization model for express/local train stop schedule plan in order to maximize the interests of both passengers and companies,and the genetic algorithm was designed to solve the model.(5)The characteristics of the passenger flow of certain urban rail transit line were extracted,and the genetic algorithm was applied to solve the established model by MatlabR2014 b.Finally,this paper obtained satisfied express/local train stop scheme plan.