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

Hyun Ho Shin; Man Kwon Choi; Myeong Whan Cho; Jin Hyun Kim; Tae Cheol Seo; Choung Kuen Lee; Seung Yu Kim

doi:10.12791/KSBEC.2022.31.4.438

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2022 Vol.31, Issue 4 Preview Page Next Page

Original Articles

Structural Performance Evaluation of a Multi-span Greenhouse with Venlo-type Roof According to Bracing Installation 가새 설치에 따른 벤로형 지붕 연동온실의 구조성능 평가

31 October 2022. pp. 438-443

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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.

Keywords

FEA

bracing

lateral stiffness

wind load

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.

키워드

가새

유한요소해석

풍하중

횡강성

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Information

Publisher :The Korean Society for Bio-Environment Control
Publisher(Ko) :(사)한국생물환경조절학회
Journal Title :Journal of Bio-Environment Control
Journal Title(Ko) :생물환경조절학회지
Volume : 31
No :4
Pages :438-443
Received Date : 2022-10-05
Accepted Date : 2022-10-21
DOI :https://doi.org/10.12791/KSBEC.2022.31.4.438

Journal of Bio-Environment Control ISSN:1229-4675(Print) 2765-3641(Online) 생물환경조절학회지

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