中国物理B ›› 2012, Vol. 21 ›› Issue (5): 50501-050501.doi: 10.1088/1674-1056/21/5/050501

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Simulation of pedestrian evacuation based on an improved dynamic parameter model

朱诺,贾斌,邵春福,岳昊   

  1. MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2011-09-29 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
  • 基金资助:
    Project is supported by the National Natural Science Foundation of China (Grant Nos. 71071013, 71001004, 71071012, and 71131001) and the Fundamental Research Funds for the Central Universities, China (Grant No. 2011YJS241).

Simulation of pedestrian evacuation based on an improved dynamic parameter model

Zhu Nuo(朱诺), Jia Bin(贾斌), Shao Chun-Fu(邵春福), and Yue Hao(岳昊)   

  1. MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China
  • Received:2011-09-29 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
  • Supported by:
    Project is supported by the National Natural Science Foundation of China (Grant Nos. 71071013, 71001004, 71071012, and 71131001) and the Fundamental Research Funds for the Central Universities, China (Grant No. 2011YJS241).

摘要: An improved dynamic parameter model is presented based on cellular automata. The dynamic parameters, including direction parameter, empty parameter, and cognition parameter, are formulated to simplify tactically the process of making decisions for pedestrians. The improved model reflects the judgement of pedestrians on surrounding conditions and the action of choosing or decision. According to the two-dimensional cellular automaton Moore neighborhood we establish the pedestrian moving rule, and carry out corresponding simulations of pedestrian evacuation. The improved model considers the impact of pedestrian density near exits on the evacuation process. Simulated and experimental results demonstrate that the improvement makes sense due to the fact that except for the spatial distance to exits, people also choose an exit according to the pedestrian density around exits. The impact factors α, β, and γ are introduced to describe transition payoff, and their optimal values are determined through simulation. Moreover, the effects of pedestrian distribution, pedestrian density, and the width of exits on the evacuation time are discussed. The optimal exit layout, i.e., the optimal position and width, is offered. The comparison between the simulated results obtained with the improved model and that from a previous model and experiments indicates that the improved model can reproduce experimental results well. Thus, it has great significance for further study, and important instructional meaning for pedestrian evacuation so as to reduce the number of casualties.

关键词: cellular automata, pedestrian evacuation, dynamic parameter, evacuation time

Abstract: An improved dynamic parameter model is presented based on cellular automata. The dynamic parameters, including direction parameter, empty parameter, and cognition parameter, are formulated to simplify tactically the process of making decisions for pedestrians. The improved model reflects the judgement of pedestrians on surrounding conditions and the action of choosing or decision. According to the two-dimensional cellular automaton Moore neighborhood we establish the pedestrian moving rule, and carry out corresponding simulations of pedestrian evacuation. The improved model considers the impact of pedestrian density near exits on the evacuation process. Simulated and experimental results demonstrate that the improvement makes sense due to the fact that except for the spatial distance to exits, people also choose an exit according to the pedestrian density around exits. The impact factors $\alpha$, $\beta$, and $\gamma$ are introduced to describe transition payoff, and their optimal values are determined through simulation. Moreover, the effects of pedestrian distribution, pedestrian density, and the width of exits on the evacuation time are discussed. The optimal exit layout, i.e., the optimal position and width, is offered. The comparison between the simulated results obtained with the improved model and that from a previous model and experiments indicates that the improved model can reproduce experimental results well. Thus, it has great significance for further study, and important instructional meaning for pedestrian evacuation so as to reduce the number of casualties.

Key words: cellular automata, pedestrian evacuation, dynamic parameter, evacuation time

中图分类号:  (Fluctuation phenomena, random processes, noise, and Brownian motion)

  • 05.40.-a
05.50.+q (Lattice theory and statistics)