Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
권호 표지

Structural Reinforcement Methods and Structural Safety Analysis for the Elevated Eaves Height 1-2W Type Plastic Greenhouse

측고를 높인 1-2W형 비닐하우스의 구조안전성 분석 및 구조보강 방법

  • Ryu, Hee-Ryong (Protected Horticulture Research Station, NIHHS, RDA) ;
  • Yu, In-Ho (Protected Horticulture Research Station, NIHHS, RDA) ;
  • Cho, Myeong-Whan (Protected Horticulture Research Station, NIHHS, RDA) ;
  • Um, Yeong-Cheol (Department of Horticultural Crop Research, NIHHS, RDA)
  • 류희룡 (농촌진흥청 국립원예특작과학원 시설원예시험장) ;
  • 유인호 (농촌진흥청 국립원예특작과학원 시설원예시험장) ;
  • 조명환 (농촌진흥청 국립원예특작과학원 시설원예시험장) ;
  • 엄영철 (농촌진흥청 국립원예특작과학원 원예작물부)
  • Published : 2009.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study was conducted to find proper structural reinforcement methods for the 4.5m-high (eaves height) 1-2W type plastic greenhouse. 3D finite element analysis was used to analyze the steel-tube structure. The 4.5m-high 1-2W type plastic greenhouse was modified by welding 1.5m-long steel-pipes into a 3.0m-tall columns of the standard 1-2W type plastic greenhouse. This remodeling method is widely used in Korea with farmer's discretion to increase the production when they grow paprika. But it is not based on the quantitative structural analysis. The proposed reinforcement methods were proved to stand against the design wind velocity of $40m{\cdot}s^{-1}$ and snow depth of 40cm. It strongly implies that the cross beam between side columns and wind resistance walls, and the lattice type cross beam should be good reinforcements to improve the structural safety of the elevated eaves height plastic greenhouse.

파프리카를 재배하는 농가에서는 생산성 증대를 위하여 비닐하우스 측고를 관행 3.0m에서 4.5m까지 높이고 있으나 이에 대한 구조안전성 검토 없이 시공이 이루어지고 있는 실정이다. 이 연구에서는 측고가 4.5m로 상승된 1-2W형 비닐하우스를 대상으로 풍속 $40m{\cdot}s^{-1}$, 적설심 40cm의 설계하중에 대하여 구조안전성 분석을 수행하고 적절한 구조보강방법을 제시하였다. 3차원 프레임해석을 이용하여 구조해석을 수행한 결과, 측면 방풍벽의 보강이 반드시 필요한 상태였으며 파프리카 작물하중으로 인하여 매우 취약해지는 중방의 보강이 요구되었다. 측면 보강 방법으로써는 외측 기둥과 방풍벽을 보강이음을 이용하며 서로 연결해주고, 외측 기둥 간격에 따라 방풍벽 부재를 보강하는 방법이 가장 효과가 큰 것으로 분석되었다. 중방의 경우 비닐하우스 폭의 $1/17{\sim}1/20$의 높이로 2중 중방구조를 만들고 그 사이를 사재로 연결하여 트러스 형태로 보강하는 방법이 가장 큰 효과를 보였다.

Keywords

References

  1. ASAE. 1997. ASAE standard. 44th ed. ASAE, St. Joseph, Mich, USA. EP288.5;EP460;EP486
  2. British Standard Institution. 2002. Standard BS EN 13031-1 :2001 Greenhouses: -design and construction-part 1: commercial production greenhouses. BSI British Standard, London, UK
  3. Castellano, S., A. Candura,. and G., Scarascia-Mugnozza. 2005. Greenhouse structure SLS analysis: Experiment results and normative aspects. ISHS Acta Horticulturae 691:701-708
  4. Iribarne, L., lA. Torres, and A. Pena. 2007. Using computer modeling technique to design tunnel greenhouse structures. Computers in Industry 58(5):403-415 https://doi.org/10.1016/j.compind.2006.09.001
  5. Japan Greenhouse Horticulture Association. 2005. Handbook of protected horticulture. 5th ed. Horticulture Information Center, Tokyo, Japan. p. 38-50
  6. Jeon, J.G, J.H. Yun, K.w. Kim, and L.B. Lee. 1998. Analysis of structural safety for arch typed plastic house while working the carrier of hanged monorail by fern. Proceedings of Korean Society for Agricultural Machinery, 1998 Winter Conference 129-135 (in Korean)
  7. Jeong, S.W., J.Y. Park, M.R. Huh, and J.C. Park. 2008. Analysis on the safety structure under 1-2W type greenhouse for paprika culture. Proceedings of Korean Society for Bio-Environment Control, 2008 Spring Conference 17(1):398-401 (in Korean)
  8. Kim, M.K., J.E. Son, S.w. Nam, D.G. Lee, and S.J. Rhie. 1992a. Studies on the structural design ofbiological production facility: Frequecy analysis of weather data for design load estimation. Journal of Biological Production Facilities & Environment Control 1(1):1-13 (in Korean)
  9. Kim, M.K., l.E. Son, and S.W. Nam. 1992b. Studies on the structural design of biological production facility:(2) Simple method for design load estimation and safety test. Journal of Biological Production Facilities & Environment Control 1(2):148-153 (in Korean)
  10. Kim, K.W., J.H. Yun, Y.S. Chang, and J.K. Jeun. 1998. 3-D structural safety analysis in plastic greenhouse (l-2W type) by computer-aided fern. Proceedings of Korean Society for Agricultural Machinery, 1998 Summer Conference 129-135 (in Korean)
  11. Kim, K.W., M.S. Kim, J.H. Yun, J.K. Jeun, and L.B. Lee. 2003. A 3D-structural beam optimization for a venlo-type plastic-film house using computer aided fern. Proceedings of Korean Society for Agricultural Machinery, 1998 Summer Conference 360-365 (in Korean)
  12. Korea Rural Economic Institute. 2008. The actual condition and subjects of Paprika in Korea
  13. Lee, H.W. and S.K. Lee. 1993. Distribution of wind force coefficients on the three-span arched house. Journal of Biological Production Facilities & Environment Control 2(1 ):46-52 (in Korean)
  14. Lee, S.K. and H.W. Lee. 1992a. Distribution of wind force coefficients on the single-span arched house. Journal of Biological Production Facilities & Environment Control 1(1):28-36 (in Korean)
  15. Lee, S.K. and H.W. Lee. 1992b. Distribution of wind force coefficients on the two-span arched house. Journal of Biological Production Facilities & Environment Control 1(2):142-148 (in Korean)
  16. Lee, S.K., et al. 1995. Greenhouse structural requirements. Rural Development Corporation of Korea (in Korean)
  17. Lee, S.H., Y.K. Hong, N.K. Yun, K.W. Kim, and Y.H. Cho. 2006. Analysis of snow safety for ginseng shading structure. Proceedings of Korean Society for BioEnvironment Control, 2006 Autumn Conference 15(2):378-381 (in Korean)
  18. Lee, S.Y., H.H. Kim, H. Chun, Y.S. Kwon, and K.M. Lee. 1998. Study on material and structural size of 1-2W type greenhouse by structural analysis simulation. Proceedings of Korean Society for Bio-Environment Control, 1998 Autumn Conference 7:89-93 (in Korean)
  19. Ministry of Agriculture and Forestry. 2007. Development of optimum model and design systems for saving structural material and improving safety of greenhouse structure (in Korean)
  20. National Greenhouse Manufacturers Association. 2004. Structural design manual
  21. Suh, W.M., M.K. Choi, Y.H. Bae, J.W. Lee, and Y.C. Yoon. 2008. Structural safety analysis ofa modified 1-2W type greenhouse enhanced tbr culturing paprika. J. Bio-Env. Con. 17(3): 197-203 (in Korean)
  22. Son, J.E. 1994. Determination of resonable unit snow weight and greatest gust speed for design of agricultural structures and their applications. Journal of Biological Production Facilities & Environment Control 3(1):1-9 (in Korean)
  23. Yoon, Y.C., W.M. Suh, and J.H. Cho. 2001. The uplift capacity of plane and corrugated piles for pipe frame greenhouse. J. Bio-Env. Con. 10(3):148-154 (in Korean)
  24. You, H.Y., Y. Pack, H.J. Kim, H. Chun, and I.H. Yu. 2007. A study on structural behaviour characteristics of high-rise improved 1-2W vinyl-house for paprika cultivation. Proceedings of Korean Society for BioEnvironmcnt Control, 2007 Autumn Conference 16(2):42 (in Korean)
  25. You, H.Y., Y.A. Shin, M.W. Cho, and I.H. Yu. 2008. A study of structure-soil interaction problem of greenhouse foundations. Proceedings of Korean Society for Bio-Environment Conc Conference 17(1 ):456-460 (in Korean)
  26. Yum, S.H., H.J. Kim, H. Chun, S.Y. Lee, Y.I. Kang, Y.H. Kim, and Y.H. Kim. 2005. Analysis of the structural safety in a non-heating greenhouse with a single cover tbr Citrus cultivation in Jeju. J. Bio-Env. Con. 14(3):166-173 (in Korean)