Research On Passenger Flow Cahracteristics And Improvement Schemes Of Metro Capacity Bottleneck

In the process of rapid developing of China urban metro,passenger record is constantly refreshed in the simulation of the large capacity,high speed,good punctuality and excellent comfort.Because of such a growth,the network has shown some bottlenecks;especially the contradiction between the capacitiy and passenger has arisen gradually.At present,metro network has preliminarily formation in some large cities,and studying and solving the capacity bottleneck has become more and more urgent.However,there is not any valuable research about capacity bottleneck in China and abroad.This thesis is established on this background,which proved to be a prospective study.Based on the development reality of metro and advanced experience in China and abroad,this paper takes a series of related research on capacitybottleneck.First,this paper put forward the method of recognizing bottleneck by using the ratio v/c,which is considered as the foundation of this study on capacity bottleneck."v"is calculated by passenger flow distribution and "c" is calculated by capacity of the train.Secondly,this paper analyzes reasons that caused capacity bottleneck and puts forward the coreresponding countermeasures to relieve it,including metro transport organization and transit regulation.The express line proved to be suitable and effective to relieve the bottleneck.Finally,by appling genetic arithmetic,this paper puts forward a model to formulate an express line and discuss the effect.