An extended social force model considering the psychological impact of the hazard source and its behavioural manifestation
An extended social force model considering the psychological impact of the hazard source and its behavioural manifestation
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DOI：
10.1016/j.physa.2023.129127
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发表时间：
2023-08
期刊：
影响因子：
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通讯作者：
Kaifeng Deng;Xiangming Hu;Meng Li;Tao Chen
中科院分区：
文献类型：
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作者：
Kaifeng Deng;Xiangming Hu;Meng Li;Tao Chen
危险源是疏散的本质原因，它对行人的心理状态产生影响，并进一步表现在行人的行为模式上。本研究旨在根据先前的实验结果，将非扩散性危险源集成到社会力模型中，并模拟预疏散延迟时间和由危险源属性控制的虚拟排斥力。结合前面的实验结果验证了这种整合，随后的模拟表明：1）预疏散延迟时间是造成危险源影响的主要因素；2）斥力产生的绕行效应显着延长了稀疏人群的疏散时间；3）瓶颈附近适度（但不是更强）的斥力提高了密集人群通过瓶颈的效率。
The hazard source is the essential cause for evacuations, and it has an impact on the psychological state of the pedestrians, which is further manifested in their behavioural patterns. This study aims to integrate a non-spreading hazard source into the social force model following the results from a previous experiment, and to simulate the pre-evacuation delay time and a virtual repulsion force from the hazard source, controlled by its properties. The integration is validated with the results of the previous experiment, and subsequent simulations reveal 1) that the pre-evacuation delay time is the major contributor to the effects of the hazard source, 2) that the detour effect, generated by the repulsion force, significantly lengthens the evacuation time for sparse crowds, and 3) that a moderate (but not stronger) repulsion force near the bottleneck improves the efficiency to pass through it for dense crowds.