ABSTRACT

The current study evaluates the influence of different exit quantity and location on evacuation efficiency of underground commercial street, and analyzes the difference of evacuation efficiency. The author selected the same underground commercial street design, with different locations layout of various exports. The improved RVO is used to generate the regional evacuation path tree according to the evacuation hierarchy of underground commercial street. A node monitoring mechanism is introduced to calculate and store the evacuation path of personnel nodes to prevent “penetration” and simulation stagnation. This paper analyzes the influence of the number and location of evacuation exits on evacuation efficiency by comparing the evacuation time of personnel, and puts forward relevant design principles. The experimental results show that under the same condition of layout and the total width of the outlet, simply increasing the number of outlets cannot effectively improve the fire evacuation efficiency of the underground commercial street. With the same number of exits, symmetrical distribution of both sides with the exit location is more conducive in improving the evacuation efficiency. This paper is expected to provide suggestions for the design of the number and location of the underground commercial street exit.

摘要

本研究评估了不同出口数量和位置对地下商业街疏散效率的影响，分析了疏散效率的差异。笔者选择了相同的地下商业街设计，不同出口的位置布局不同。改进后的RVO用于根据地下商业街疏散等级生成区域疏散路径树。引入节点监控机制，计算并存储人员节点的疏散路径，防止“穿透”和模拟停滞。本文通过比较人员疏散时间，分析疏散出口数量和位置对疏散效率的影响，并提出相关设计原则。实验结果表明，在相同布局和出口总宽度的条件下，单纯增加出口数量并不能有效提高地下商业街的消防疏散效率。在出口数量相同的情况下，两侧与出口位置对称分布更有利于提高疏散效率。本文有望为地下商业街出口数量和位置的设计提供建议。两侧与出口位置对称分布更有利于提高疏散效率。本文有望为地下商业街出口数量和位置的设计提供建议。两侧与出口位置对称分布更有利于提高疏散效率。本文有望为地下商业街出口数量和位置的设计提供建议。