Research on Dynamic Calculation of Passenger Flow in Urban Rail Network Basd on the Coupling Model of Passenger Flow and Train Operation*

In the operation process of urban rail transit network, it is necessary to grasp the dynamic changes in passenger flow and calculate the real-time passenger flow of the line network during future operation periods, so as to provide real-time passenger flow data support for dynamic operation management and control. In order to better describe the interaction between train operation and passenger flow, the weighted-edge network topology diagram of urban rail network is established firstly. Based on the data of automatic fare collection system (AFC), a dynamic Origin-Destination(OD, the starting and ending points of a passenger's journey) matrix is built, and the Dijkstra algorithm is used to simulate the path selection process of the passengers, the link relationship, and the OD decomposition of passenger flow is carried out based on the train operation. Then, dynamic analysis is conducted on the platform passenger flow and cross-section passenger flow to obtain the dynamic change patterns of inbound passenger flow, outbound passenger flow. Then the dynamic analysis of platform passenger flow and cross-section passenger flow is carried out to obtain relationship between micro indicators such as inbound passenger flow, outbound passenger flow, boarding passenger flow, dewll passenger flow and alighting passenger flow. Based on the interactive relationship between passengers and train operation, the dynamic calculation model of passenger flow of rail transit network is constructed based on the coupling model between passenger flow and train operation, and the platform passenger flow and cross-section passenger flow are calculated. Finally, the feasibility of the model is verified using an actual subway network of China as an example.