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SIMULATION OF SNOW LOAD DISTRIBUTION ON GREENHOUSE USING DEM TECHNIQUE
Authors: Hyo-hyeog Jeong, Sang-Yeon Lee, Uk-Hyeon Yeo, Se-Jun Park, Cristina Decano, Yeong-bae Choi, Jeong-Hwa Cho, Jun-Gyu Kim, In-Bok Lee
Identifier: CSBE21916
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Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » Regular Sessions
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Description: As the frequency of heavy snow has increased due to weather changes over the past decade, South Korea has suffered 79.5 million dollars (2009~2018) in damage to horticultural facilities. The damage to horticultural facilities will cause secondary damage to farmers due to reduced crop production period, so the establishment of prediction and warning system is necessary. The destruction in horticultural facilities by snow is caused by excess load exceeding the design load or eccentric load. Eccentric load is caused by the unequal distribution of snow depending on the wind environment and roof type. However, it is difficult to prepare for collapse according to eccentric load since the standard for domestic facilities assumed a uniform snowload in the structure. Therefore, the purpose of this study is to identify the snow load distribution characteristics of horticultural facilities. In order to identify the snow load distribution of horticultural facilities, series of lab experiments using artificial snow were conducted according to greenhouse models and sloping plates. In addition, numerical analysis models were developed based on Discrete Element Method (DEM). DEM model was validated through comparison with laboratory experimental results (Errors 4.9% to 7.4%). Simulation was performed according to the wind environment, roof shape, and span number through the validated DEM model. Based on the results, the structural safety of greenhouses considering the snow load distribution can be evaluated and the foundation of prediction and warning system for the destruction of horticultural facilities by heavy snow can be prepared.
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Building & Materials
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Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: Korea, Republic of (South Korea)
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: As the frequency of heavy snow has increased due to weather changes over the past decade, South Korea has suffered 79.5 million dollars (2009~2018) in damage to horticultural facilities. The damage to horticultural facilities will cause secondary damage to farmers due to reduced crop production period, so the establishment of prediction and warning system is necessary. The destruction in horticultural facilities by snow is caused by excess load exceeding the design load or eccentric load. Eccentric load is caused by the unequal distribution of snow depending on the wind environment and roof type. However, it is difficult to prepare for collapse according to eccentric load since the standard for domestic facilities assumed a uniform snowload in the structure. Therefore, the purpose of this study is to identify the snow load distribution characteristics of horticultural facilities. In order to identify the snow load distribution of horticultural facilities, series of lab experiments using artificial snow were conducted according to greenhouse models and sloping plates. In addition, numerical analysis models were developed based on Discrete Element Method (DEM). DEM model was validated through comparison with laboratory experimental results (Errors 4.9% to 7.4%). Simulation was performed according to the wind environment, roof shape, and span number through the validated DEM model. Based on the results, the structural safety of greenhouses considering the snow load distribution can be evaluated and the foundation of prediction and warning system for the destruction of horticultural facilities by heavy snow can be prepared.
Keywords:
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2021-06-11
Technical field:
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Building & Materials
Other information:
Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: Korea, Republic of (South Korea)
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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