Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Evaluation of Snow Load Using a Snow Simulation Wind Tunnel for Single Span and Multiple Span Green House Roofs

설시뮬레이션풍동을 이용한 단동형과 연동형 비닐하우스 지붕에 대한 적설하중평가

  • 유기표 (전북대학교 건축공학과)
  • Received : 2012.04.05
  • Published : 2012.07.25
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Abstract

Heavy snowfall has damaged standalone green houses and the typical pattern was, regardless of area, M shaped collapse resulting from the breakdown of roof rafters by excessive snow load on the roof. As to the pattern of damage to multi span green houses by heavy snowfall, excessive snow load worked on the hollow parts and pressed the rafters and, as a result, the columns were broken and tilted. This study purposed to analyze snowdrift pattern by conducting a snow simulation wind tunnel experiment on single span and multiple span green house roofs using artificial snow. Snow depth was larger on single span roofs than on multiple span ones. However, Snow depth on the hollow part between two houses in multiple span green houses was larger than that on the top of the roof. When three standalone green houses were deployed in parallel, the middle one showed 18 20% larger snow depth than the others. The largest snow depth was measured on the top of each green house, and snow depth at the part where wind direction changed was 20 30% less than that at other parts.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. 이태훈, "폭설에 대비한 비닐하우스의 보수 및 보강", 대한건축학회 춘계학술발표대회 논문집 구조계, 21(1),2001
  2. 원예연구소, "기상재해에 의한 원예시설 피해양상과 대책"
  3. 이석건, 이종원, 이현우, "지역별 소형 비닐하우스의 구조특성 분석", 한국생물환경조절학회 심포지엄, 2002
  4. 건축구조기준, 대한건축학회, 2009
  5. Taylor D.A, Schriver W.R. (1980) "Unbalanced snow distributions for the design of Arch-Shaped roofs in Canada", Canadian Journal of Civil Engineering Vol. 7, No. 4, pp. 651-656 https://doi.org/10.1139/l80-078
  6. Isyumov N, Davenpord AG. (1974) "A probailistic to the prediction of snow loads", Candion Journal of Civil Engineering, Vol. 1, pp. 28-49 https://doi.org/10.1139/l74-003
  7. Isyumov N, Mikitiuk M. (1989) "Wind tunnel model tests of snow drift on a two-level flat roof", Proceedings of the 6th U.S. National Conference on Wind Engineering, Vol. II, pp. A6-47 to A6-58
  8. Finney E.A. "Snow control on the highways", Michigan Engineering Experiment Station bulletin No. 57, pp.1-62
  9. 遠藤 明久, 苫米地(1984), "活性白土を 用いた 風洞實驗による 水平遲棚, 山形遲棚の 屋上積雪形狀", 日本建築學會 構造系 論文報告集, 357互
  10. Kim D.H, Kwok K.C.S, Rohde H.F.(1989), "Wind tunnel model study of Antarctic snowdrifting", Proceedings of 10th Australasian Fluid Mechanics Conference, Vol. 2, pp. 9.35-9.38
  11. Mellor M. (1965), "Blowing snow", Cold Region Sciences and Engineering, Part III, A3C, U.S. Army Cold Regions Research And Engineering Laboratory.
  12. 유기표, "모의눈의 상사와 풍동실험장치를 이용한 건축물의 적설형태에 대한연구", 대한건축학회논문집 구조계, 27(4), 2011