Analysis Of Regional Rail Transit Passenger Flow Based On Trip Chain

In recent years,parts of China have entered the stage of rapid urbanization,and the population and economic scale have been rising.With the continuous development of China’s economy,the construction of transportation infrastructure is also increasingly perfect.In order to meet the diverse needs of residents’ travel modes,the construction of rail transit has developed rapidly.The layout of high-speed railway is gradually intensifying,and the construction of urban rail transit is gradually expanding,all showing a trend of network and multi-standard.However,each city has its own advantages and disadvantages.The prosperity of its political,economic and cultural life cannot be developed without a healthy transportation network,which requires close exchanges and cooperation with each other to achieve sustainable development.Important content of development.The purpose of this article is to analyze the regional rail transit passenger flow based on the trip chain,and taking the travelling passengers within the area as the research object.Firstly,the scope of regional rail transit is defined on the basis of urban agglomeration.Based on the characteristics of regional rail transit,the definition of the regional rail transit travel chain studied in this paper is given,and its influencing factors are analyzed.Based on this,regional rail transit summarizes the overall characteristics of the transportation trip chain;then briefly introduce and compare the RP and SP survey methods of passenger travel behavior surveys,and design a questionnaire to conduct a survey to conduct a brief statistical analysis of the personal attributes and travel behavior of the surveyed passengers;The basic concepts of non-aggregate model,the theory of utility randomness and maximization are summarized,and a typical non-aggregate model is introduced.Then,using the nested Logit model in the discrete selection model,a three-layer NL model based on the trip chain’s regional rail transit passenger flow sharing rate was established.The upper layer of the model constrains the lower layer of the model through conditional probability,and the lower layer of the model uses the logarithm of its total utility as a characteristic variable of the upper model.The specific method of the model is given to make it more comprehensive.Study the regional rail passenger flow.Finally,passenger flow of Chengdu-Chongqing area is analyzed with examples.Using passenger survey data of Chengdu-Chongqing area,a three-layer NL model is established to analyze and analyze the passenger flow,including the proportion of each type of travel chain and the length of the travel chain.Click to analyze the travel characteristics of passenger flow and show the corresponding results in the form of charts.