摘要
提出并建立了一种人群疏散仿真模型。针对疏散空间中障碍物的动态布局,采用网格法获得各障碍物包围盒坐标,依据最短路径原则采用几何法确定每个个体起始疏散路径,解决了人群疏散的空间连续性问题。针对人群疏散时个体之间的差异性,依据个体与个体之间的作用力、摩擦力动态改变个体的行进方向,以及依据人群密度采用人群疏散速度模型实时确定每个个体的运动速度,解决了个体之间的动态避碰、绕行和超越等问题。针对人群疏散时多个出口的选择问题,提出了把出口拥挤状态与个体心理慌乱状态相结合的出口选择方法。最后采用粒子系统实现了上述人群疏散行为的二维仿真并取得了较好的效果。
A model of crowd evacuation simulation is presented. For dynamic layout situation of obstacles in evacuation space, this model uses grids to get the coordinates of the obstacle′s bounding box and uses the geometry rule to get each individual evacuation route based on the best route rule, which resolves the problem of space continuity. For the individual difference in crowd evacuation, this model uses acting force between individuals and frictions to change the direction of individual advancing and uses speed model on the base of density to get real-time speed of individual, which resolves the problem of collision, avoidance and excess among the individuals. For the exit selecting problem, a method to select the exit by combining the exit′s congestion state with the individual nervous state is presented. Finally, a two-dimensional behavior simulation of crowd evacuation is realized by using particle system and good effect is obtained.
出处
《中国安全科学学报》
CAS
CSCD
2008年第2期22-27,共6页
China Safety Science Journal
基金
江苏省社会发展计划基金资助(BS2007048)
南京市软件产业计划资助(2007软资119)
关键词
人群疏散
行为仿真
粒子系统
几何模型
社会力模型
crowd evacuation
behavior simulation
particle system
geometry model
social force model
