Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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The Relationship Between Walking Speed and Available Walking Height

보행 가능 높이에 따른 재실자의 보행속력에 관한 연구

  • Son, Jong-Yeong (School of Architectural, Civil, Environmental and Energy Engineering, Kyungpook National University) ;
  • Bae, Young-Hoon (School of Architectural, Civil, Environmental and Energy Engineering, Kyungpook National University) ;
  • Jeon, Gyu-Yeob (Department of Architectural Engineering, Jeju National University) ;
  • Hong, Won-Hwa (School of Architectural, Civil, Environmental and Energy Engineering, Kyungpook National University) ;
  • Shin, Young-Min (School of Architectural, Civil, Environmental and Energy Engineering, Kyungpook National University)
  • 손종영 (경북대학교 건설환경에너지공학부 대학원) ;
  • 배영훈 (경북대학교 건설환경에너지공학부 대학원) ;
  • 전규엽 (제주대학교 건축학부) ;
  • 홍원화 (경북대학교 건설환경에너지공학부) ;
  • 신영민 (경북대학교 건설환경에너지공학부 대학원)
  • Received : 2020.01.06
  • Accepted : 2020.02.11
  • Published : 2020.04.30
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Abstract

During fire outbreaks, smoke accumulates from the ceiling and reduces the available walking height of people passing through. In this study, a walking experiment was conducted to investigate the relationship between the walking speed of people and available walking height. Twenty-three participants were enrolled. Based on the results, the lower the available walking height, the lower the average walking speed of the participants. However, a significant difference was noted only in the walking speed when the available walking height was 1.2 m compared to the free walking speed. In addition, there was no significant difference among participants in terms of their BMI index grade. However, in the case of participants with normal BMI, the walking speed at a 1.2 m available walking height was significantly lower than when walking freely. Further, in the case of overweight participants, the walking speed at 1.8 m and 1.7 m available walking height was significantly increased compared to that when walking freely.

건물화재 시 발생한 연기는 천장에서부터 내려오는 특성을 가진다. 이러한 특성으로 인해 화재상황에 따라 연기가 존재하는 공간을 지나는 사람들의 보행 가능 높이는 낮아지게 된다. 이에 본 연구에서는 보행 가능 높이에 따라 사람들의 보행속력을 분석하기 위해 보행실험을 수행하였다. 실험은 남녀 총 23명의 참가자가 참여하였다. 실험에 대한 분석결과, 전체적으로 보행 가능 높이가 낮아질수록 실험참가자들의 평균 보행속도는 낮아졌다. 하지만 보행가능 높이가 1.2 m일 때의 보행속도만이 자유보행속도와 비교하여 유의미한 차이를 나타냈다. 또한, 실험참가자들의 BMI 지수 등급(저체중, 정상, 과체중, 비만)에 따라 분석한 결과 각 BMI 지수 등급 사이에는 유의미한 차이를 나타내지 못했다. 하지만 정상 등급은 경우 보행 가능 높이가 1.2 m에서의 보행속도가 정상 등급의 자유보행속도와 비교하여 유의미하게 저하되었고, 과체중 등급의 경우 1.8 m, 1.7 m에서의 보행속도가 과체중 등급의 자유보행속도와 비교하여 유의미하게 증가하였다.

Keywords

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