Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
권호 표지
DOI QR코드

DOI QR Code

Structural Safety of Single-Span Greenhouses under Wind Load of Costal Reclaimed Lands

간척지 내 단동형 온실의 풍하중에 대한 구조 안정성 분석

  • Hong, Se-Woon (Department of Food, Agricultural and Biological Engineering, The Ohio State University) ;
  • Kim, Rack-Woo (Department of Rural Systems Engineering, College of Agriculture and Life Sciences, Seoul National University) ;
  • Choi, Won (Department of Rural Systems Engineering, College of Agriculture and Life Sciences, Seoul National University)
  • Received : 2017.07.13
  • Accepted : 2017.07.20
  • Published : 2017.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

Coastal reclamation has created large flat lands, part of which is an attractive site to construct greenhouse complexes for the horticulture industry. Wind environments over these coastal lands are entirely different from those of the inland area, and demand increased structural safety. The objective of this study is to evaluate the structural safety of two single-span greenhouses, peach type and even-span type, under the wind characteristics of coastal reclaimed lands. The wind pressure coefficients acting on the walls and roofs of two greenhouses were measured by wind tunnel experiments, and those acting on the roofs were approximately two times larger than those suggested by the existing design guidelines. Consequently, structural analysis conducted by SAP2000 showed that greenhouse structures designed by the existing guidelines might lead to structural failure under coastal wind conditions because their maximum allowable wind speeds were lower than the design wind speed. Especially, the peach type greenhouse constructed in a reclaimed land could be damaged by approximately 48 % of the design wind speed and needed improvement of structural designs. This study suggested increasing the spacing of rafters with thicker pipes for the peach type greenhouse to enhance economic feasibility of the building under strong wind conditions of reclaimed lands.

Keywords

References

  1. EN13031, 2001. Greenhouses - Design and construction - Part 1 Commercial production greenhouses. European Standards.
  2. Kim, D. W., K. C. Ryu, and S. J. Joo, 2014a. Estimation of wind pressure coefficients on peach-type greenhouse according to roof curvature. Journal of the Wind Engineering Institute of Korea 18(4): 215-223 (in Korean).
  3. Kim, R. W., D. W. Kim, K. C. Ryu, J. S. Kwon, and I. B. Lee, 2014b. Estimation of wind pressure coefficients on even-span greenhouse built in reclaimed land according to roof slop using wind tunnel. Protected Horticulture and Plant Factory 23(4): 269-280 (in Korean). https://doi.org/10.12791/KSBEC.2014.23.4.269
  4. KRC, 1995. Greenhouse structural requirements. Korea Rural Community Corporation.
  5. Kwon, K. S., D. W. Kim, R. W. Kim, T. H. Ha, and I. B. Lee, 2016. Evaluation of wind pressure coefficients of single-span greenhouses built on reclaimed coastal land using a large-sized wind tunnel. Biosystems Engineering 141: 58-81. https://doi.org/10.1016/j.biosystemseng.2015.11.007
  6. Lee, J. W., H. B. Chul, H. W. Lee, and S. W. Chung, 2014. Current status and development of greenhouse models for oriental melon cultivation in Seongju region. Protected Horticulture and Plant Factory 23(2): 95-108 (in Korean). https://doi.org/10.12791/KSBEC.2014.23.2.95
  7. Lee, J. W., 2013. Analysis of safety wind speed and snow depth for single-span plastic greenhouse according to growing crops. Current Research on Agriculture and Life Sciences 31(4): 280-285 (in Korean). https://doi.org/10.14518/crals.2013.31.4.009
  8. Lee, S. G., H. W. Lee, and J. W. Lee, 1993. Analysis of wind force coefficients for structural design of houses. Annual Meeting of the Korean Society for Bio-Environmental Control, 1993: 16-17 (in Korean).
  9. Lee, S. Y., 2016. Study on requirement for structural design of greenhouse in reclaimed land, 15-157. Project number PJ009492. Jeollabuk-do: National Institute of Agricultural Sciences, Rural Development Administration (in Korean).
  10. MAFRA, 2014. Standard designs and specifications for disaster resilience of horticultural facilities. Ministry of Agriculture, Food and Rural Affairs, No. 2014-78 (in Korean).
  11. MAFRA, 2016. Greenhouse and protected vegetable production statistics 2015. Ministry of Agriculture, Food and Rural Affairs, No. 11-1543000-000051-10. Sejong (in Korean).
  12. MFAFF, 1999. Standards for structural design of greenhouses. Ministry for Food, Agriculture, Forestry and Fisheries, No. 99-Yu Tong 34 (in Korean).
  13. MFAFF, 2010a. Notification of using reclaimed land. Ministry for Food, Agriculture, Forestry and Fisheries, No. 2010-47 (in Korean).
  14. MFAFF, 2010b. Specification and Drawing of Horticulture facility. Ministry for Food, Agriculture, Forestry and Fisheries, No. 2010-128 (in Korean).
  15. Nam, S. W., 2001. A study on the standard durable years of pipe framed greenhouses. Journal of the Korean Society of Agricultural Engineers 43(1): 96-101 (in Korean).
  16. Park, S. E., J. W. Lee, S. G. Lee, H. W. Lee, and J. H. Choi, 2010. The cause analysis of greenhouse damage for heavy snow using large displacement analysis. Journal of the Korean Association for Spatial Structures 10(2): 61-68 (in Korean).
  17. Robertson, A. P., Ph. Roux, J. Gratraud, G. Scarascia, S. Castellano, M. Dufresne de Virel, and P. Palier, 2002. Wind pressures on permeably and impermeably-clad structures. Journal of Wind Engineering and Industrial Aerodynamics 90: 461-474. https://doi.org/10.1016/S0167-6105(01)00210-0
  18. Suh, W. M., M. K. Choi, Y. H. Bae, J. W. Lee, and Y. C. Yoon, 2008. Structural safety analysis of a modified 1-2W type greenhouse enhanced for culturing paprika. Journal of Bio-Environment Control 17(3): 197-203 (in Korean).
  19. Yoon, Y. C., T. K. Kim, M. G. Choi, Y. J. Kim, J. W. Lee, and W. M. Shu, 2007. Natural disaster resistance of single-span plastic greenhouse for strawberry cultivation. Journal of Agriculture & Life Science 41(3): 63-68 (in Korean).
  20. Yun, N. K, S. H. Yum, G. W. Kim, S. H. Lee, and Y. H. Cho, 2008. Study on wind pressure distribution and coefficient of arched type single-span greenhouse by wind tunnel test. Annual Meeting of the Korean Society for Bio-Environmental Control 2008: 319-322 (in Korean).
  21. Yun, S. W., M. K. Choi, C. Yu, J. W. Lee, S. Y. Lee, and Y. C. Yoon, 2013. Estimation of design load for greenhouse applicable in coastal reclaimed lands. Journal of Agriculture & Life Science 47(3): 123-131 (in Korean).