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Evacuation dynamics considering pedestrians' movement behavior change with fire and smoke spreading

机译：考虑行人运动行为随火和烟扩散而变化的疏散动力学

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This paper proposes an extended Floor-Field (FF) model to study the pedestrian evacuation dynamics with the influence of the fire and the smoke spreading. The spreading of smoke is from top to bottom, which leaves less and less room for the movement of pedestrians. And thus, the movement behavior of pedestrians is divided into three stages: normal walk, bent-over walk, and crawl. In the new model, the influence of the fire and the smoke on the movement of pedestrians is modeled by the fire floor field and the smoke floor field respectively. Numerical simulations are carried out to study the evacuation dynamics under fire and smoke. The influences of personnel density, fire location, exit width, fire spreading rate, and smoke spreading rate, on the evacuation efficiency are analyzed in detail. The simulation results show that the pedestrian evacuation dynamics is highly related to fire location in the room and the spreading rates of the fire and the smoke. Those results can bring some guidance to design the building structure and make the evacuation strategy in emergency situation. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文提出了一种扩展的落地模型（FF），以研究在火灾和烟尘扩散影响下的行人疏散动态。烟雾从上到下散布，为行人的活动留下了越来越少的空间。因此，行人的运动行为分为三个阶段：正常行走，弯腰行走和爬行。在新模型中，火和烟对行人运动的影响分别通过火场和烟场来建模。进行了数值模拟，以研究火灾和烟雾下的疏散动态。详细分析了人员密度，火场位置，出口宽度，火势蔓延率和烟尘蔓延率对疏散效率的影响。仿真结果表明，行人疏散动力学与房间内的火灾位置以及火灾和烟气的扩散率密切相关。这些结果可为设计建筑结构和制定紧急情况下的疏散策略提供指导。 （C）2016 Elsevier Ltd.保留所有权利。

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