关键词: 交通工程, 随机行为波动, 社会力模型, 行人, 人行横道

Abstract:

To make pedestrian microscopic simulation model more comprehensive, this paper builds a pedestrian microscopic simulation model to describe pedestrian crossing process considering random behavior based on social force model. In the modified model, the influence of random behavior on pedestrian crossing is studied. Two models are modeled to represent random behavior from speed and force. Based on the simulation results, on condition that the ratio of bidirectional pedestrian is 1:1, the pedestrian simulation trajectories and the relationship between the crossing time and crossing pedestrian number are acquired. Besides, when random behavior anisotropic character λ_αε takes different values from 0 to 1, the difference between pedestrian simulation crossing time and calculates crossing time based on crossing time empirical model are compared and analyzed. It is found that random behavior leads the crossing time to increase, and the second modified social force model can reproduce the crossing trajectories similar to actual crossing trajectories. when random behavior anisotropic character λ_αε takes different values from 0.5 to 1, pedestrian simulation crossing time of second modified social force model are closest to calculated crossing time based on crossing time empirical model.

Key words: traffic engineering, random behavior fluctuations, social force model, pedestrian, crosswalk