Analyzing pedestrian merging flow on a floor–stair interface using an extended lattice gas model
Analyzing pedestrian merging flow on a floor–stair interface using an extended lattice gas model
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DOI：
10.1177/0037549714526294
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
F. Huo;Weiguo Song;W. Lv;K. Liew
中科院分区：
文献类型：
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作者：
F. Huo;Weiguo Song;W. Lv;K. Liew
楼层-楼梯界面是高层建筑逃生楼梯的重要组成部分，楼层-楼梯界面的合流特性对研究高层建筑人员疏散具有重要意义。在本文中，原来的格子气模型进行了扩展，考虑内侧步行偏好，转弯行为和不同的期望速度。然后利用扩展的模型模拟了楼层-楼梯界面的合流流动。仿真结果的基本图形与经验数据的趋势相同，发现当走廊与楼梯相邻时，楼层与楼梯交界处的合并会延缓行人在楼梯上的运动，降低行人在楼梯上的运动速度。研究了两种典型的楼-梯界面结构对行人合流行为的影响。结果表明，走廊与楼梯入口相对的平台相连，可以改善人员疏散过程。本文的研究结果对了解层-梯界面行人合流流的特性和建筑结构设计具有一定的参考价值。
The floor–stair interface is a critical component of the escape stairs in high-rise buildings, and the characteristics of the merging flow in the floor–stair interface is also significant for investigating the evacuation of high-rise buildings. In this paper, the original lattice gas model is extended by considering inner-side walking preferences, turning behavior and different desired speeds. Then the merging flow in the floor–stair interface is simulated with the extended model. The fundamental diagram of the simulation results has the same tendency as the empirical data and it is found that the merging at the floor–stair interface could retard the motion of pedestrians on the incoming stairs and reduce the motion speed in the case when the corridors are adjacent to the incoming stairs. The effect of two kinds of typical structures of the floor–stair interface on pedestrian merging behavior is investigated. The results show that the evacuation process will be improved when the corridor is connected to the landing opposite to the incoming stairs. The results given in this paper may be helpful in understanding the characteristics of pedestrian merging flow in floor–stair interfaces and in designing building structures.