中国物理B ›› 2025, Vol. 34 ›› Issue (1): 18903-018903.doi: 10.1088/1674-1056/ad94e2

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Experimental study on egress capacity of key facilities in pressurized oxygen-supplement compartments

Kai-Qiang Wang(王凯强)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. 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
  • 收稿日期:2024-09-06 修回日期:2024-11-05 接受日期:2024-11-20 发布日期:2025-01-02
  • 通讯作者: Zhi-Gang Shi, Jun Zhang E-mail:szg@usst.edu.cn;junz@ustc.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 72174189, 72001095, and 72304123).

Experimental study on egress capacity of key facilities in pressurized oxygen-supplement compartments

Kai-Qiang Wang(王凯强)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. 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
  • Received:2024-09-06 Revised:2024-11-05 Accepted:2024-11-20 Published:2025-01-02
  • Contact: Zhi-Gang Shi, Jun Zhang E-mail:szg@usst.edu.cn;junz@ustc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 72174189, 72001095, and 72304123).

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摘要： 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.

关键词: pressurized staircase, pressure transition cabin, escape window, pedestrian movement

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.

Key words: pressurized staircase, pressure transition cabin, escape window, pedestrian movement

中图分类号:  (Transportation)

  • 89.40.-a
89.60.Ec (Environmental safety) 01.50.Pa (Laboratory experiments and apparatus) 91.60.Gf (High-pressure behavior)