中文摘要：

为再现坡度设施中密集人群的挤压倒地现象，建立一种势函数场元胞自动机模型．该模型采用耦合行人之间挤压作用力场的坡度人行设施势函数场作为人群行走方向的“导航图”．利用模型分析斜坡角度、人群密度与行人挤压倒地现象之间的作用机制，提出两两结队行走策略可以减少倒地人数．模拟结果表明采用两两结队行走策略时倒地人数不超过总人数的10％．

英文摘要：

A potential field cellular automata model is proposed to reproduce the pushing down phenomena for crowd evacuation. In this model, the moving direction of the crowd on a domain with a ramp is navigated by combing a pushing force field within a cost potential field. In addition, the proposed model is employed to analyze the interaction among the ramp angle, the crowd initial density and the pushing down phenomena. The analysis shows that the two-people-together strategy may decrease the number of pedestrians falling to the ground, and the simulation shows that the percentage is only less than 10% of the pedestrians.