Risk-Field Based Modeling for Pedestrian Emergency Evacuation Combined with Alternative Route Strategy
Risk-Field Based Modeling for Pedestrian Emergency Evacuation Combined with Alternative Route Strategy
复制标题
基于风险场的行人紧急疏散建模与替代路线策略相结合
DOI：
10.1155/2017/3405619
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发表时间：
2017-01-01
影响因子：
--
通讯作者：
Wang, Jian
中科院分区：
文献类型：
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作者：
Wang, Chao;Wang, Jian
近几十年来，随着踩踏、火灾、恐怖袭击等突发事件的频繁发生，人们迫切需要建立符合实际的疏散模型来描述行人和灾害的动态过程。本文提出了一种结合危险因素的扩展楼层场模型，用于应急疏散。设计了一种新的动态改道机制来解释疏散人员的退出选择行为，同时充分探索了一个推荐的动态风险场模型来处理灾害的动力学特征。通过对特定房间结构的数值模拟，验证了该模型的有效性。详细分析了模型参数对人员疏散效率和死亡人数的影响。仿真结果表明，该模型是有效的，对疏散人员的出口选择行为有积极的影响，并且疏散过程中人员获得的感知信息（如人群密度）与死亡人数密切相关。
For the past decades, with the frequent occurrence of emergencies, such as stampede, fire, and terrorist attack, the urgent requirements of developing realistic evacuation models to describe pedestrian and disaster dynamics are put forward. In this paper, an extended floor-field (FF) model combined with risk factors is presented for emergency evacuation. A novel dynamic rerouting mechanism is designed to elucidate the exit choice behavior of evacuees, and meanwhile, a recommended dynamic risk-field model is fully explored to deal with dynamical features of disaster. The proposed model is validated through numerical simulations with specific room structures. The effects of model parameters on evacuation efficiency and death toll are analyzed in detail. Simulation results show that the proposed model is effective and has a positive influence on evacuees’ exit choice behavior, and the death toll is closely related to the perceived information obtained by evacuee, such as the crowd density during the evacuation process.