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为了改善既有行人微观仿真模型计算效率与模型精度的矛盾,遵循“时空离散,属性连续”的原则,建立“大网格,小时段”的仿真环境。根据障碍物空间占有率的大小将网格分为空地网格、完全障碍物网格、渠化障碍物网格和小型障碍物网格4类,研究不同“体型”行人通过网格的速度衰减变化,并引入机会成本,建立基于动态广义势能场的行人微观仿真模型。通过仿真实验,从行人步速、轨迹和基本图对模型进行验证。结果表明本模型能兼顾效率与精度,并充分体现行人特性的差异。
In order to improve the contradiction between the computational efficiency and model accuracy of the existing pedestrian microscopic simulation model, the simulation environment of “big grid and small period” is established by following the principle of “spatiotemporal dispersion and attribute continuity”. According to the occupancy rate of obstacles, the grids are divided into four categories: open space grid, complete obstacle grid, canyon barrier grid and small obstacle grid. Speed decay, and introduces the opportunity cost. A pedestrian microcosmic simulation model based on the dynamic generalized potential field is established. Through simulation experiments, the model is verified from the pedestrian pace, trajectory and the basic map. The results show that this model can balance the efficiency and accuracy, and fully reflect the differences of pedestrian characteristics.