Study On The Passenger Flow Carrying Capacity Of Urban Rail Transit Station

In recent years,with the rapid development of urban rail transit in our country,the rail transit network of big cities has formed gradually,relieving the pressure of road traffic effectively,It’s convenience people’s travelling greatly.However,with the rapid growth of passenger flow,Traffic congestion problem is becoming more and more serious,which makes people pay more and more attention to the reasonable evaluation of passenger flow capacity of urban rail transit stations.In this thesis,taking parts of Beijing metro station as an example,through analysis the internal and external factors of the station,the concept of passenger flow carrying capacity in the station and the passenger flow capacity of the station system is given.The relationship between the influence factors and the passenger capacity of the station is studied from four aspects:the train operation organization,the type of land use around the station,the arrangement of the facilities in the station and the connection with other modes of transportation.Through comprehensive evaluation and simulation calculation,the passenger flow carrying capacity of the station is evaluated and calculated quantitatively.It provides theoretical support for the rational planning and design of the station,land development,coping with the impact of large passenger flow and traffic dispatching.The main research contents include:(1)In the train operation organization,through analysis the relationship between the passenger flow carrying capacity of the train and the station,we can get the optimization proposal of increasing the passenger flow capacity of the station.In the facility layout of the station,For example the Xidan station,we can analyze the passenger flow density velocity relation of various facilities in the station,and find the limit of passenger flow carrying capacity in the station.In terms of the type of land use around the station,taking parts of the station of Beijing metro line 1 as an example,the thesis studies the nonlinear regression relation between land use type,building area,volume rate,land mixed utilization,land use intensity and station passenger flow in the 600m area around the station;in rail transit and the railway traffic connection with the transportation mode,the number of conventional bus stations around the Beijing rail transit station,the number of car parking lot,the number of public bicycle parking lot and the passenger flow data of the Beijing metro operation company are counted,we can obtain the linear relationship between the passenger traffic and the different traffic connection modes,and analysis the positive and negative correlation.(2)In order to evaluate the passenger flow capacity of the urban rail transit station system,this thesis selects 18 evaluation indexes based on four aspects and divides the passenger flow capacity of the station system into 4 grades,which are weak loading(IV),suitable loading(III),slight overloading(II)and severe overloading(I).Through expert scoring,the membership function of cloud model evaluation set is obtained and cloud calculation is carried out.Xidan station is between suitable load and slight overloading,and it has a trend towards slight overload.Guan Zhuang station is between weak load and suitable load,and has the trend of developing towards suitable load.The evaluation results are analyzed and compared,and optimization suggestions are put forward.(3)According to the Metro Design Technical Standard,the maximum capacity of the station bottleneck is used as the quantitative calculation basis for the passenger flow carrying capacity inside the metro station;Building the system dynamics model of the rail traffic station by using the Vensim simulation software,analysis the passenger flow carrying capacity and the influence factors of the transfer station system through the non transfer station system are analyzed respectively.With the example of Xi Erqi station,analyzes the fluctuation of passenger flow under the influence of the single factor of passenger flow carrying capacity of the station system,and draws the sensitivity of the influencing factors,providing a theoretical basis for the rational evaluation of the passenger flow capacity of urban rail transit stations.