Research On Microscopic Simulation Model And System Of Pedestrian Flow In Urban Rail Transit Station

With the expanding of urban rail transit network, urban rail transit has gradually become an indispensable trip model. As the node of the rail traffic network, the rail transit station has significant characteristics, such as a large passenger flow density, the short train operation interval time and so on. In order to predict whether the design of the rail transit station can meet the demands of passenger flow in the near future or the long-dated, and evaluate the service level of the rail transit station, we need to make a simulation on the passenger flow in the rail transit station. However, most of the existing simulation system at present can only be used for a particular station, and cannot apply to the others. Therefore, the study on a general simulation model and system, which can simulate the different station in rail transit network, find out the different station capacity bottlenecks, and improve the travel efficiency of passenger in the station, has the vital significance.Firstly, this paper analyzes the structure of the urban rail transit station and the activity process of passenger in the station. According to the analysis, the passenger behavior in the station can be divided into the decision-making behavior and the activity behavior. And we summarize the equipment characteristics of the rail transit station. Based on the summary, the paper studies the passenger different behavior characteristics in different station equipment.Secondly, according to the characteristics of the rail transit station facilities, this paper proposes a "hierarchical simulation" method, and abstracts the different facilities in the station to establish the general simulation model, which includes the rail transit station environment simulation model, the simulation model of the train and the simulation model of the pedestrian. According to the passenger flow behavior in rail transit stations, the paper builds the passenger simulation models of various kinds of typical activities in the rail transit station.Thirdly, according to the characteristics of the passengers moving in the rail transit station, the paper establishes the passenger perception moving model. By calculating the benefits of path, vision and type, which the moving passenger can get, the paper quantifies the perception of passenger on the surrounding environment and to make passengers move more in line with the actual situation in the station. And by the model, it simulates a series of microscopic passenger behavior in the station, such as freedom walk, avoiding, surpassing, following, swap places and so on. Finally, in order to verify the model and the versatility of the system, this paper uses the general urban rail transit station simulation system to make a simulation of a subway station facilities environment and make a microscopic simulation of the passenger in this station. And then analyze the microscopic passenger behavior and macroscopic behavior characteristics. By comparing the simulation results with the actual situation, the paper verifies the effectiveness of the proposed model and algorithm.