China Safety Science Journal ›› 2023, Vol. 33 ›› Issue (9): 196-203.doi: 10.16265/j.cnki.issn1003-3033.2023.09.2178

• Public safety • Previous Articles     Next Articles

Construction and stability analysis of an evacuation model for contrary movement personnel

DENG Qing1,2(), ZHOU Zheng1,2, DENG Li3, JIANG Huiling1,4,**(), ZHOU Liang1,2, ZHOU Zhengqing1,2   

  1. 1 Research Institute of Macro-Safety Science, University of Science and Technology Beijing, Beijing 100083, China
    2 School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
    3 Central South Architectural Design Institute Co., Wuhan Hubei 430071, China
    4 Technical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2023-03-01 Revised:2023-06-13 Online:2023-09-28 Published:2024-03-28
  • Contact: JIANG Huiling

Abstract:

To accurately depict the evolution process of individual behavior conflicts during evacuations and improve evacuation efficiency, the evolutionary game theory was applied to analyze the evolution of evacuation behaviors in two typical scenarios involving contrary movement personnel. The impact of population density, level of emergency severity, and individual psychological gains on the choice of cooperative or competitive strategies by individuals was discussed. The dynamic evolution process of game players and the influence of parameter adjustment on the strategy selection of both sides could be demonstrated with the help of Matlab. The simulation results showed that under certain constraints, there were five equilibrium points which were (1,0), (0,1), (1,1), (0,0), and a saddle point. It is found that different types of retrograde pedestrians benefit from different proportions, but the influencing parameters of their behavior evolution have the same influence trend. When the psychological benefits of regular evacuees, the risk level of the accident, and the additional time loss of counterflow individuals increase, evacuees tend to adopt a yielding strategy. Conversely, when the cost of competition for regular evacuees and the rewards of successful competition for counterflow individuals decrease, the counterflow individuals tend to adopt a yielding strategy.

Key words: retrograde behavior, evolutionary game, stable analysis, pedestrian evacuation, evacuation efficiency