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Experimental study on egress capacity of key facilities in pressurized oxygen-supplement compartments |
| Kai-Qiang Wang(王开强)1,†, Xue-Hua Song(宋雪华)2,†, Wei-Jun Liu(刘卫军)1, Kang Wen(文康)1, Zhi-Gang Shi(石志钢)3,4,‡, Jun Zhang(张俊)2,§, Bin Yao(姚斌)2, and Wei-Guo Song(宋卫国)2 |
1 China Construction Institute of Advanced Technology, Wuhan 450000, China;
2 State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;
3 Business School, University of Shanghai for Science and Technology, Shanghai 200093, China;
4 School of Intelligent Emergency Management, University of Shanghai for Science and Technology, Shanghai 200093, China |
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Abstract Pressurized buildings have emerged as a novel architectural solution to alleviate altitude illness in high-altitude regions. Unlike conventional buildings, evacuation from this kind of building has to experience a depressurization time, which results in air expansion and heat absorption, creating a dense fog and impairing sight within the buildings. Evacuation experiments were performed in a pressurized oxygen-supplement compartment to investigate the pedestrian motion properties. Based on the questionnaires, participants reported varying degrees of symptoms such as ear blockage, reduced environmental noise, and dizziness, which had a measurable impact on their mobility. We focus on the evacuation parameters through three basic building components: staircases, pressure transition cabins, and escape windows. As the visibility in the compartment decreases from high to low, the movement patterns of pedestrian shift from triangular to single-file with a significant decline in evacuation efficiency. It is found that there is a linear relationship between evacuation time and the number of evacuees through escape windows. The pressure transition cabin is a crucial evacuation route in emergencies, and evacuation time is recommended as the key metric for assessing its effectiveness. These findings offer valuable insights for emergency evacuation strategies in pressurized buildings.
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Received: 06 September 2024
Revised: 05 November 2024
Accepted manuscript online: 20 November 2024
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PACS:
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89.40.-a
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(Transportation)
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89.60.Ec
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(Environmental safety)
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01.50.Pa
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(Laboratory experiments and apparatus)
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91.60.Gf
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(High-pressure behavior)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 72174189, 72001095, and 72304123). |
Corresponding Authors:
Zhi-Gang Shi, Jun Zhang
E-mail: szg@usst.edu.cn;junz@ustc.edu.cn
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Cite this article:
Kai-Qiang Wang(王开强), Xue-Hua Song(宋雪华), Wei-Jun Liu(刘卫军), Kang Wen(文康), Zhi-Gang Shi(石志钢), Jun Zhang(张俊), Bin Yao(姚斌), and Wei-Guo Song(宋卫国) Experimental study on egress capacity of key facilities in pressurized oxygen-supplement compartments 2025 Chin. Phys. B 34 018903
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