基于非均匀静地板场的多因子疏散模型研究

针对现有地板场模型在设置静态场场值及场景维度应用上的局限性,提出一种非均匀静地板场模型。以单个圆形/圆球(以疏散出口为圆心/球心,出口所在单元格宽度为半径)和元胞空间的重合面积/体积作为静态地板场场值的设置基准,确定4种不同疏散场景下的静地板场场值设置方法。应用MATLAB软件对小型疏散场景进行模拟仿真。结果表明：在地板场模型中,静地板场场值对疏散步长影响显著,而引导人员表现为“反向引导”作用;动静地板场相互作用会抑制疏散效率;引导作用对元胞演化信息熵和疏散步长的影响程度相近;相较于常规静地板模型,所构建的非均匀静地板场模型对引导作用变化的展现效果更加明显,能为精确制定诱导策略提供参考依据。

Study on Multi-factor Evacuation Model Based onNon-uniform Static Floor Field

A non-uniform static floor field model is proposed to improve the limitations of existing floor field models in setting static field values and scene dimensions. Taking the overlapping area / volume of a single circular / spherical sphere (the evacuation exits as the center / spherical center, and the width of the cell at the exit as the radius) and cell space as the setting benchmark of the static floor field value, the setting methods of the static floor field value in four different evacuation scenarios are determined. The MATLAB software is used to simulate the small evacuation scene. The results show that in the model, the static floor field has a significant effect on the evacuation step length, while the guide has a "reverse guidance" effect, and the interaction between the static and dynamic floor field inhibits the evacuation efficiency The Influence of guidance on the information entropy of cell evolution and the length of evacuation step is similar. Compared with the conventional static floor model, the non-uniform static floor model is more effective in showing the change of guiding function, and it can provide reference for making guidance strategy accurately.