The Adaptability Study Of Refined Section Density Of Passenger Flow And Transport Organization In Urban Rail Transit

After years of construction,the rail transit systems of major cities in China have developed rapidly.And many cities have formed rail transit networks.In the context of rapid urban growth and rapid population growth,the passenger traffic of urban rail transit systems continues to grow.In order to ensure the quality of service,the urban rail transit operating unit should meet the demand of passenger under different conditions.Therefore,it is of great research value to study the changing characteristics of passenger flow and verify the adaptability of passenger flow and transportation organization scheme.section density of passenger flow is an important indicator for urban rail transit passenger flow analysis,and also a key basis for the formulation of transport organization decision-making.However,urban rail transit operating units usually use different degrees of estimation methods when calculating the section density of passenger flow,which makes the result error larger.In order to reduce the calculation error of section density of passenger flow in time interval,this thesis focuses on the calculation method of section density of passenger flow in time interval based on the definition of section density of passenger flow.Through the analysis of refined section density of passenger flow and the adaptability of transportation organization scheme,it provides for the subsequent adjustment of transportation organization plan in accordance with.The main research contents of this thesis are as follows:First,the urban rail transit network is abstracted and processed.And the graphics are converted into data that conforms to the programming operation.The effective path mathematical model is established by analyzing the passenger travel behavior.And the effective path set is searched based on the condition of the transfer limit upper limit in the model.Secondly,by analyzing the transaction data of urban rail transit gates,the current full-day OD table is generated.On this basis,the Logit model is used to distribute passenger flow in the effective path set,and the passenger flow distribution is verified based on the existing urban rail transit statistics.Then,combined with the urban rail transit gate transaction data,passenger flow guarantee measures and transportation organization plan,analyze the passenger travel steps,and sort out the solution ideas of the refined section density of passenger flow in the time interval.On this basis,the refined calculation method of section density of passenger flow in the time interval is proposed.Finally,taking Chengdu Metro as a typical case,the design transportation capacity of each route in the current transportation organization scheme is calculated.And compared with the calculation results of refined section density of passenger flow in the time interval,the conclusions of the adaptability of passenger flow and transportation organization scheme are briefly analyzed.