Journal of Bio-Environment Control (생물환경조절학회지)

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

DOI QR Code

Structural Performance Evaluation of a Multi-span Greenhouse with Venlo-type Roof According to Bracing Installation

가새 설치에 따른 벤로형 지붕 연동온실의 구조성능 평가

  • Shin, Hyun Ho (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Choi, Man Kwon (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Cho, Myeong Whan (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Kim, Jin Hyun (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Seo, Tae Cheol (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Lee, Choung Kuen (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Kim, Seung Yu (Vegetable Research Division, NIHHS, RDA)
  • 신현호 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 최만권 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 조명환 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 김진현 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 서태철 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 이충근 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 김승유 (농촌진흥청 국립원예특작과학원 채소과)
  • Received : 2022.10.05
  • Accepted : 2022.10.21
  • Published : 2022.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, the lateral loading test was performed to analyze structural performance of multi-span plastic greenhouse through full-scale experiment and numerical analysis. In order to analyze the lateral stiffness and stress, we installed 9 displacement sensors and 19 strain gauge sensors on the specimen, respectively, and load of l mm per minute was applied until the specimen failure. In the comparison between the full-scale experiment and the structural analysis results of a multi-span greenhouse with venlo-type roof according to bracing installation, there was a large difference in the lateral stiffness of the structure. By installing a brace system, the lateral stiffness measured near the side elevation of the specimen increased by up 44%. As the bracing joint used in the field did not secure sufficient rigidity, the external force could not be transmitted to the entire structure properly. Therefore, it is necessary to establish a bracing construction method and design standards in order for a greenhouse to which bracing applied to have sufficient performance.

본 연구에서는 실대형 실험과 구조해석을 통해서 현장에서 사용되는 가새 시스템을 적용한 강관 골조 플라스틱 연동온실의 횡하중 가력시험을 수행하고 성능을 분석하였다. 횡강성과 응력을 분석하기 위해 실험체에 변위와 변형률계를 각각 9개소 및 16개소 설치하였으며 가새의 설치 유무에 따른 성능을 비교하기 위해 구조해석을 수행하였다. 실대형 실험과 가새의 설치 유무에 따른 구조해석 결과 비교에서 구조물의 횡강성이 많은 차이를 보였다. 실험체의 측고 부근에서 측정한 횡강성은 가새 시스템을 설치함으로 강성을 최대 44%까지 증가시켰다. 현장에서 사용하는 가새의 접합부가 충분한 강성을 확보하지 못함으로써 외력을 전체 구조물에 적절히 전달하지 못하여 횡강성이 구조해석 결과보다 많이 저하되는 현상이 나타났다. 따라서 온실 설계 시 구조성능의 신뢰성을 높이기 위해서 가새 시스템의 연결방법, 설치위치, 부재의 최대길이 등 온실의 접합부에 대한 명확한 시공방법과 설계기준이 정립되어 온실 설계가 이루어져야 할 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 연구사업(과제번호: PJ015063012022)의 지원에 의해 이루어진 것임.

References

  1. Cho K.H., and S.B. Kim 2019, Compressive strength of concrete-encased composite columns according to design specifications. J Korean Soc Steel Const 31:223-231. (in Korean) doi:10.7781/kjoss.2019.31.3.223
  2. Choi M.K., H.R. Ryu, M.W. Cho, and I.H. Yu 2017, Effect of the member joint on structural performance of an arch-type multi-span greenhouse: A full-scale experimental and numerical study. Protected Hort Plant Fac 26:402-410. (in Korean) doi:10.12791/KSBEC.2017.26.4.402
  3. Choi M.K., H.R. Ryu, M.W. Cho, and I.H. Yu 2018, Evaluation of steel-pipe connections in plastic greenhouse using bending test. Protected Hort Plant Fac 27:391-399. (in Korean) doi:10.12791/KSBEC.2018.27.4.391
  4. Chung D.H., G.Y. Kim, and J.H. Won 2015, Effects of minimum horizontal load on structural safety of system supports. J Korean Soc Saf 30:37-43. (in Korean) doi:10.14346/JKOSOS.2015.30.5.37
  5. Lee S.W., S.C. Jeong, S.J. Kim, and J.H. Won 2020, Experimental study on ultimate load of system scaffolding according to catwalk width and bracing installation. J Korean Soc Steel Const 32:127-137. (in Korean) doi:10.7781/kjoss.2020.32.2.127
  6. MAFRA and RDA 2014, Design and construction code on horticultural and herbal facilities for disaster resistance. National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Korea. (in Korean)
  7. Park S.E., J.W. Lee, S.G. Lee, and J.H. Choi 2010, Analysis and reinforcing method of greenhouse frame for reducing heavy snow damage. J Korean Soc Hazard Mitig 10:1-7. (in Korean)
  8. Park Y.S., G. Cui, and Y.C. Park 2018, Experimental study on compressive seam strength of bolted connection in extra-deep corrugated steel plates. J Korean Soc Steel Const 30:309-316. (in Korean) doi:10.7781/kjoss.2018.30.5.309
  9. Yoo J.H. 2009, Evaluation of gusset plate connection stiffness in braced frames. J Korean Soc Steel Const 21:105-113. (in Korean)
  10. Yu I.H., E.H. Lee, M.W. Cho, H.R. Ryu, and Y.C. Kim 2012, Development of multi-span plastic greenhouse for tomato cultivation. J Bio-Env Con 21:428-436. (in Korean) https://doi.org/10.12791/KSBEC.2012.21.4.428
  11. Yum S.H., S.H. Kim, S.B. Lee, M.Y. Kim, and C.S. Kim 2010, Effect of a supplementary pole on the structural stability in the single-span plastic greenhouses. J Bio-Env Con 19:63-69. (in Korean)