Study On The Stopping Capacity Of The Bay Bus Station

With the increasingly serious traffic congestion in China,the development of public transport has become an inevitable trend,and the development of public transport in China has gradually accelerated.As the infrastructure of urban roads,bus stations are also important nodes of public transport lines.The parking process of bus stations has attracted more and more attention.It is of great significance to analyze the operation process of buses at bus stations and sort out the operation mechanism of buses to improve the parking capacity of bus stations,optimize the operation efficiency of buses and maintain the good operation of bus systems in cities.This thesis first classifies the bus stations according to the three directions of setting position,setting method and setting form,and discusses the use conditions,advantages and disadvantages of various bus stations,and then determines that the research direction of this thesis is the bay bus station.Through the detailed analysis of different types of harbor bus stops,the research objects of this thesis are determined to be conventional harbor bus stops,tandem double harbor bus stops and parallel double platform double harbor bus stops.Finally,the characteristics of the three types of bus stations are studied in detail,and the whole process of bus parking is sorted out,and the conflict points of buses in the operation of various stations are summarized.Secondly,six typical harbor-type bus stations in Chongqing were selected as the research objects.The GPS data of bus operation were cleaned to obtain the operation data of the required bus lines.At the same time,the field investigation of bus parking process was carried out to obtain the survey data.Then the data after cleaning is compared with the field survey data to verify the validity of GPS data.Then,the factors that may affect the bus stop time are analyzed from three aspects : bus station setting,bus operation characteristics and surrounding environment characteristics.The influencing factors are divided into two categories according to classification variables and numerical variables,with a total of 9 variables.Firstly,the KM method in the survival analysis method is used to study the four classification variables,and it is found that the four classification variables will affect the bus stop time.Secondly,the Cox model is used to comprehensively analyze the nine variables,and the risk function of bus stop time is obtained.It is determined that the three factors of bus arrival rate,bus station berth number and maximum number of people on and off the bus have the greatest impact on bus stop time.Then the bus station is divided into saturated state and unsaturated state.For the bus stations in the saturated state,the parking capacity models of three types of bay bus stations are constructed by analyzing the bus operation characteristics,the interaction between the main and auxiliary stations and the queuing theory.The model is solved by matlab software,and the recommended number of berths for various types of harbor bus stations under different traffic conditions is obtained.For the bus station in the unsaturated state,the state transition diagram method is used to simulate the operation process of the bus on the platform,and the bus stop capacity calculation model is constructed.The Monte Carlo experiment method is used to solve the model,and the docking ability of different types of harbor bus stations is compared.It is found that the docking ability of the tandem double harbor bus station is greater than that of the parallel and conventional harbor bus stations under the same conditions.Finally,taking a typical harbor style bus station in Chongqing as an example,a field investigation was conducted on the bus station.After analysis,it was found that the setting of the bus stop cannot meet the stopping needs of the bus route.In order to ensure the normal operation of the platform,the bus stop needs to be renovated.Firstly,a simulation model of the target bus station was constructed using Vissim simulation software.The simulation results of the stopping capacity of the target bus station were obtained through simulation,and compared with the theoretical model calculation results to verify the effectiveness of the model.Secondly,the target station was transformed into a series double bay and a parallel double bay bus station,and two types of bus stations were simulated.The simulation results were compared with the theoretical model calculation results,verifying the effectiveness of the bus station stopping capacity model.Finally,a comparative analysis was conducted on the optimization efficiency of the stopping capacity and average bus delay of the two renovation schemes,and it was concluded that transforming the target station into a series double harbor bus station can more effectively improve the stopping capacity of the bus station and better meet the needs of the target station.