Performance of occupant evacuation in a super high-rise building up to 583 m
Performance of occupant evacuation in a super high-rise building up to 583 m
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DOI：
10.1016/j.physa.2021.126643
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发表时间：
2022-03-01
影响因子：
3.3
通讯作者：
Gao, Yan
中科院分区：
文献类型：
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作者：
Huang, Zhongyi;Fan, Rui;Gao, Yan
楼梯间是超高层建筑的主要疏散通道，通过足尺实验揭示超高层建筑楼梯间的疏散特性，对安全疏散具有重要意义。然而，目前很少有研究集中在这类建筑中的人群疏散性能，特别是集体运动的情况下。在垂直高度为583 m的世界第二高楼上海中心大厦进行了人员疏散实验。提取了69名参与者在58个楼梯段的疏散速度，并分析和讨论了行程距离、性别、年龄和密度对下降速度的影响。根据研究结果，旅行高度高9.63%的参与者花费的疏散时间长16.39%，但在每个组内的速度不随移动距离的增加而降低，我们提出了一个有趣的假设，旅行距离可能会影响下降速度，但需要进一步验证。雌性的速度显著低于雄性，雌性对行进距离的增加更为敏感。与此同时，年轻的参与者表现出比老年人更好的疏散能力，包括他们疏散得更快，受汇流影响更小。研究结果为相关疏散模型的验证和标定提供了依据，也为超高层建筑应急疏散设施的设计提供了基础数据。(C) 2021 Elsevier B. V.保留所有权利。
The stairwell is the main evacuation channel of super high-rise buildings, so revealing the evacuation characteristics on stairs in such buildings based on a full-scale experiment is critical for safer evacuation. However, currently there are few studies focusing on the evacuation performance of crowd in such buildings, especially for the collective movement scenarios. Here, an evacuation experiment is carried out in Shanghai Tower with a vertical height of 583 m, which is the second tallest building in the world. The evacuation speeds for 69 participants in 58 stair sections are extracted and the effects of travel distance, gender, age and density on descent speeds are analyzed and discussed. According to the result that the group of participants with a 9.63% higher travel height spends a 16.39% longer evacuation time, yet within each group the speed does not decrease with the increase of the moving distance, we propose an interesting hypothesis that the travel distance may affect descent speed, but it needs to be further verified. The speeds of the female are significantly lower than those of the male and the female are more sensitive to the increase of travel distance. At the same time, younger participants show better evacuation ability than the older ones, including that they evacuate faster and are less affected by the confluence. Furthermore, a new method is proposed to calculate density and the fundamental diagram These results are useful for the validation and calibration of related evacuation models, and can provide basic data for the design of emergency evacuation facilities in super high-rise buildings. (C)& nbsp;2021 Elsevier B.V. All rights reserved.