行人最大速度对行人流影响的研究  

Study on the Effect of the Maximum Velocity of Pedestrians on Pedestrian Flow

作　　者：刘祥树[1] 陆安山[1] 

机构地区：[1]钦州学院物理与材料科学学院,广西钦州535000

出　　处：《钦州学院学报》2011年第3期43-47,共5页Journal of Qinzhou University

基　　金：广西自然科学基金(桂科自0889019);钦州学院校级科研项目(2010XJKY-51C)

摘　　要：应用改进的格子气模型(即将行人的最大速度扩展到大于1)研究行人的最大速度对过道中单向和双向行人流的影响。模拟结果显示:最大速度为5时所对应基本图的临界密度跟实验值比较符合,说明该扩展是必要的;在一定范围内随着行人最大速度的增大道路的整体通行能力增强同时临界密度减小;双向行人流的时空斑图显示行人最大速度的增大加快了拥堵的形成过程(即缩短了行人从局部拥堵演化为完全拥堵的时间)。In the present paper, upgraded lattice gas model in which the maximum velocity of pedestrians is extended beyond one is used to study the effect of the maximum velocity of pedestrians on unidirectional and bidirectional flow pedestrian flow. It is shown by the simulation ： When the vmax is 5, the critical density of the corresponding fundamental diagram is in comparatively good agreement with empirical results. With the increase of Vmax within a certain scale, while the overall traffic capacity increa- ses, the critical density decreases. The space-time spot diagram of the bidirectional flow indicates that the increase of Vmax accelerates the forming process of traffic congestion, which means that the span from partial traffic congestion to complete traffic congestion has been reduced.

关 键 词：行人最大速度 行人流 格子气模型 双向行人流 临界密度 

分 类 号：N93[自然科学总论]