Simulation of crowd dynamics in pedestrian evacuation concerning panic contagion:A cellular automaton approach  

作　　者：Guan-Ning Wang Tao Chen Jin-Wei Chen Kaifeng Deng Ru-Dong Wang 王冠宁;陈涛;陈锦炜;邓凯丰;王汝栋(Institute of Public Safety Research/Department of Engineering Physics,Tsinghua University,Beijing 100084,China;Department of Electronic Engineering,Tsinghua University,Beijing 100084,China;Hefei Institute for Public Safety Research,Tsinghua University,Hefei 230601,China)

机构地区：[1]Institute of Public Safety Research/Department of Engineering Physics,Tsinghua University,Beijing 100084,China [2]Department of Electronic Engineering,Tsinghua University,Beijing 100084,China [3]Hefei Institute for Public Safety Research,Tsinghua University,Hefei 230601,China

出　　处：《Chinese Physics B》2022年第6期241-253,共13页中国物理B（英文版）

基　　金：supported by the National Key Technology Research and Development Program of China(Grant No.2019YFC0810804);the National Natural Science Foundation of China(Grant No.7197010332)。

摘　　要：The study of the panic evacuation process is of great significance to emergency management.Panic not only causes negative emotions such as irritability and anxiety,but also affects the pedestrians decision-making process,thereby inducing the abnormal crowd behavior.Prompted by the epidemiological SIR model,an extended floor field cellular automaton model was proposed to investigate the pedestrian dynamics under the threat of hazard resulting from the panic contagion.In the model,the conception of panic transmission status(PTS)was put forward to describe pedestrians’behavior who could transmit panic emotions to others.The model also indicated the pedestrian movement was governed by the static and hazard threat floor field.Then rules that panic could influence decision-making process were set up based on the floor field theory.The simulation results show that the stronger the pedestrian panic,the more sensitive pedestrians are to hazards,and the less able to rationally find safe exits.However,when the crowd density is high,the panic contagion has a less impact on the evacuation process of pedestrians.It is also found that when the hazard position is closer to the exit,the panic will propagate for a longer time and have a greater impact on the evacuation.The results also suggest that as the extent of pedestrian’s familiarity with the environment increases,pedestrians spend less time to escape from the room and are less sensitive to the hazard.In addition,it is essential to point out that,compared with the impact of panic contagion,the pedestrian’s familiarity with environment has a more significant influence on the evacuation.

关 键 词：HAZARD panic contagion EVACUATION cellular automaton 

分 类 号：TP301.1[自动化与计算机技术—计算机系统结构] D035[自动化与计算机技术—计算机科学与技术]