成果名称：Tangential Change Behavior and Pedestrian Simulation of Multi-channel Evacuation Crowd

作者：Lianghai Jin;Mei Fang;Shu Chen;Wenfan Lei; Yun Chen

期刊：Mathematical Problems in Engineering

摘要：In evacuation, the velocity difference of adjacent pedestrians before and after often leads to tangential change of pedestrian location in channel.This tangential change behavior and its interaction disturb the stable state of crowd evacuation in multiple channels, which can affect the efficiency of crowd evacuation and even cause trampling accidents. This paper considers the dynamic comfort distance and the expected speed and analyzes the relative position changes after pedestrian change lane. It investigates the conditions of tangential change behavior and defines the rules of tangential change behavior processing. Meanwhile, it investigates the crowd's tangential change behavior and its interaction process, revealing the crowd evacuation mechanism of tangential change behavior conditions. Simulation results show that as the crowd density gradually increases, pedestrians exhibit the evolutionary characteristic of“no tangential change → occasional tangential change → frequent tangential change → closely following”. The evacuation speed is obviously influenced by pedestrian’s tangential change behavior and crowd density, when the pedestrian density ρ=2.0 and ρ=3.0, the tangential change behavior not only makes the speed difference and fluctuation between different lanes great, but also has the same effect on the average speed of pedestrians. The results of this study can provide theoretical insights into the organization of multi-channel evacuation and expand the theoretical space of crowd dynamics in an evacuation.

论文创新点：从微观的切变行为层面，通过加载舒适距离、最小需求距离等变量，重新设定行人移动规则，采用元胞自动机方法，解释多股道行人通行的宏观规律。

论文链接：https://www.hindawi.com/search/all/tangential+change+behavior+and+pedestrian+simulation+of+multi+channel+evacuation+crowd/