Analysis On The Intensity Of Passenger Flow And Transfer Organization In Urban Rail Transit

Urban rail transit systems in China have gradually entered into a new stage of network-based operation. For rail lines spread over the city center, the passenger volume is close to the capacity limitation. However, in rail lines located at the suburb area, the passenger volume grow up slowly and it is even far below the expected volume. It is of great significance to study the law of passenger intensity in different kinds of rail lines, for both planning and operation. Network-based operation is demanding more convenient and efficient transfer organization. Research on transfer organization is helpful to improve the service quality and attraction of urban rail transit systems.This thesis analyzes the influencing factors and principal law on the intensity of passenger flow. This thesis analyzes the transfer process at stations, and explores the influencing of transfer efficiency on the competitiveness of urban railways and the traveler’s route choice behavior. This thesis also discusses the transfer organization in urban railways from both network planning and station design. In addition, this thesis analyzes the competitiveness of urban railways in airport and inter-city railway hub and presents the effective methods to increase the market sharing rate of urban rail transit systems. The main contents and conclusions are as follows.(1) This thesis analyzes the law of passenger intensity of different kinds of urban rail lines and networks. This thesis explores the fundamental connotation of passenger intensity, and analyzes the influencing factors impact on passenger intensity and proposes a method to evaluate the importance of different factors. The results show that the proportion of transfer stations, population size and rail line density have significant influences on the intensity of network passenger flow. For rail lines, transfer convenience and the length of lines in central district have significant influences on the intensity of passenger flow. Disequilibrium of the intensity of passenger flow is discussed, which shows that the intensity decreases in proper order according to urban line, inter-suburban line, urban-suburb line and suburban line.(2) The effects of transfer efficiency on competitiveness of urban urban rail transit and passenger route choice behavior are analyzed. A competitiveness model of urban rail transit is proposed, which shows that the attraction of urban rail transit increases with the improvement of transfer efficiency. Walking time and transfer environment are significant contributors to the attraction of urban rail transit. Taking into account the traveler cognitive differences, a multinomial logit model considering transfer efficiency is proposed, which is able to better describe the traveler choice behaviors through the empirical surveys.(3) From the perspective of network planning, transfer convenience and travel efficiency in different network morphologys are analyzed. The connotation and evaluation methods of transfer convenience are proposed. Based on the analysis on transfer convenience in different network morphologys, it reveals that transfer transfer convenience become smaller in proper order according to radiology ring network, grid ring network, radial network and grid network. Assuming the resident trip is evenly distributed on spatial, this thesis analyes the influencing of network morphologys on travel efficiency. It is found that travel efficiency is reduced in proper order according to radiology ring network, radial network, grid ring network and grid network.(4) From the perspective of transfer station design, the transfer time in different design of transfer station for both two-line transfer and three-wire transfer are analyzed. A viewpoint is proposed that in two-line transfer the average transfer time is longer in proper order according to liner shape transfer than in "T" transfer, and in three-wire transfer the average transfer time becomes smaller in triangle transfer,"*" transfer and liner shape transfer. The effects of network morphology and transfer station design on transfer efficiency and convenience are discussed empirically in several typical cities.(5) The competitiveness of urban railways in airport and inter-city railway hubs are studied considering the characteristics of rail transit and other transportation modes. An improved multinomial logit model is proposed and the parameters are calibrated and validated by surveys on airport and inter-city railway hub. Several effective methods of improvement in transfer organization and fare adjustment to increase the market sharing rate of urban rail transit systems are presented.