간척지 내 단동형 온실의 풍하중에 대한 구조 안정성 분석
Structural Safety of Single-Span Greenhouses under Wind Load of Costal Reclaimed Lands
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
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.
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.
참고문헌 (21)
- "EN13031, Greenhouses - Design and construction – Part 1 Commercial production greenhouses", European Standards, ~ (2001)
- 김동우, "지붕곡률에 따른 복숭아형 온실의 풍압계수 평가", 한국풍공학회지, 18(4), pp.215~223 (2014), 한국풍공학회
- 김락우, "풍동을 이용한 간척지 내 양지붕형 온실의 지붕 경사에 따른 풍압계수 평가", 시설원예‧식물공장, 23(4), pp.269~280 (2014), (사) 한국생물환경조절학회
- Greenhouse structural requirements, "KRC", Korea Rural Community Corporation, ~ (1995)
- Kwon, K. S., "Evaluation of wind pressure coefficients of single-span greenhouses built on reclaimed coastal land using a large-sized wind tunnel", Biosystems Engineering, 141, pp.58~81 (2016)
- 이종원, "성주지역 참외 재배용 온실구조 현황 및 모델 개발", 시설원예‧식물공장, 23(2), pp.95~108 (2014), (사) 한국생물환경조절학회
- Lee, J. W., "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), pp.280~285 (2013)
- Lee, S. G., "Analysis of wind force coefficients for structural design of houses", Annual Meeting of the Korean Society for Bio-Environmental Control, pp.16~17 (1993)
- Study on requirement for structural design of greenhouse in reclaimed land, "Lee, S. Y.", National Institute of Agricultural Sciences, Rural Development Administration, 15~157, pp.Project number PJ009492 (2016)
- Standard designs and specifications for disaster resilience of horticultural facilities, "MAFRA", Ministry of Agriculture, Food and Rural Affairs, ~, pp.No. 2014-78 (2014)
- Greenhouse and protected vegetable production statistics 2015, "MAFRA", Ministry of Agriculture, Food and Rural Affairs, ~, pp.No. 11-1543000-000051-10 (2015)
- Standards for structural design of greenhouses, "MFAFF", Ministry for Food, Agriculture, Forestry and Fisheries, ~, pp.No. 99-Yu Tong 34 (1999)
- Notification of using reclaimed land, "MFAFF", Ministry for Food, Agriculture, Forestry and Fisheries, ~, pp.No. 2010-47 (2010)
- Specification and Drawing of Horticulture facility, "MFAFF", Ministry for Food, Agriculture, Forestry and Fisheries, ~, pp.No. 2010-128 (2010)
- Nam, S. W., "A study on the standard durable years of pipe framed greenhouses", Journal of the Korean Society of Agricultural Engineers, 43(1), pp.96~101 (2001)
- 박순응, "폭설시 대변위해석을 이용한 온실의 피해원인 분석", 한국공간구조학회지, 10(2), pp.61~68 (2010), 한국공간구조학회
- Robertson, A. P., "Wind pressures on permeably and impermeably-clad structures", Journal of Wind Engineering and Industrial Aerodynamics, 90, pp.461~474 (2002)
- 서원명, "착색단고추 재배용 1-2W 형 개조온실 구조의 안정성 검토", 시설원예‧식물공장, 17(3), pp.197~203 (2008), (사) 한국생물환경조절학회
- 윤용철, "딸기재배용 단동비닐하우스의 내재해성 검토", 농업생명과학연구, 41(3), pp.63~68 (2007), 농업생명과학연구원
- Yun, N. K, "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, pp.319~322 (2008)
- 윤성욱, "간척지 내 온실설계를 위한 설계하중 산정", 농업생명과학연구, 47(3), pp.123~131 (2013), 농업생명과학연구원