Modeling And Simulation Of Microscopic Pedestrian Flow In Subway Station Hubs

With the development of world economic, crowds of the city become much worse, demand of transportation and traffic system increase greatly. As an important manner of city public transport and traffic, MTR system plays more and more important role. But the pedestrian flow gather quickly in different space and times, especially in high level of pedestrian flow, mass pedestrian flow produce too many blocks in subway station, result in station works under overload, level of station service decreases rapidly, travel cost of pedestrians increases more and more. So through deeply research of the principle of pedestrian flow gathering and distribution in subway station, then strengths the capacities of station, improves service level, distribute the pedestrian flow quickly. From this view point, basing methodologies and theories of pedestrian flow, this paper build the model of gathering and distribution of pedestrian flow in subway station, then design and implement the simulation software system of the model. With the simulation software system, this research estimates adaptation of subway station in different gathering and distribution of pedestrian flow conditions, then find out the bottle neck of service level, at last provide solution estimation for subway station building and rebuilding. Details of the research below:(1) Combining our country actual condition, this paper model the microscopic gathering and distribution of pedestrian flow in subway station, called gathering and distribution model. Separate the model into three part, pedestrian walking, abstracting characters of subway facilities, and reaching pedestrian flow. Basing cellar auto machismo, the pedestrian walking model obeys principles of nearest route hunting and walking along right part of road, fit characters of pedestrian of our country very well. With mechanism of splitting simulation clock time, the model describes the pedestrian velocity and detecting of knocking more real; building methodology of abstracting characters of subway facilities to build subway in simulation environment; with the distribution of passion, research the reach pedestrian flow.(2) Basing gathering and distribution model, this paper build software framework of simulation of the microscopic gathering and distribution of pedestrian flow in subway station, called software framework. With methodology of Object-Oriented, building a common simulation framework, a common simulation framework of the microscopic gathering and distribution of pedestrian flow in subway station, components of pedestrian walking and characteristics of subway facilities in software framework. In software framework, building separation of simulation and simulation monitoring mechanism and caching nearest routes mechanism to improve the capacities of simulation system. At last give a methodology named responsibility driven building to build a simulation of the microscopic gathering and distribution of pedestrian flow in subway station application system basing the software framework.(3) With the software framework and responsibility driven methodology, this paper build simulation of the microscopic gathering and distribution of pedestrian flow in XiZhiMen station application system. With the XiZhiMen simulation system, simulating a whole day from 5:00 to 23:00, analyzing the gathering data and monitoring results, give an analysis and explanation of bottle neck spreading with the subway train schedules, with the bottle neck spreading and a whole day simulation result, the paper estimates the service of XiZhiMen, through analyzing the estimation, give solutions to reduce the limits and bottle necks in the XiZhiMen station.