簡易設施結構耐風設計之研究

Studies on the Improvement of Wind Resistance Capacity in the Walk-in Tunnel Greenhouse in Taiwan

張金元(Chin-Yuan Chang) ； 田雲生(Yun-Sheng Tien) ； 陳令錫(Ling-Hsi Chen)

《臺中區農業改良場研究彙報》 114期 (2012/03) Pp. 45-55

https://doi.org/10.6956/BTDAIS.201203.0045

摘要

簡易設施廣泛應用於作物栽培，然臺灣夏季有強風侵襲，在結構耐風能力不足情況下常使設施損壞，因此適度提昇設施結構耐風能力，能降低固定資本之損失。本研究採用內政部營建署之耐風設計規範進行簡易設施結構強度分析，分別以對照組及四種補強方式進行計算，結果顯示，設施在承受側向風速47.5 m/s風壓力作用時，未進行補強結構設計之對照組，其變形量為22.6 mm，而四種補強方式之變形量結果排序，分別為倒T形結構18.1 mm、山形結構15.0 mm、V形結構13.9 mm、1(1/4)”管徑10.8 mm，可知以1(1/4)”管徑之鍍鋅鐵管耐風能力最佳，管材用量也為全部模組中最高，而其所需重量增幅達28%；採用山形結構補強方式，則可以最經濟之管材用量得到較低變形結果，而管材增量僅4.35%。

關鍵字

簡易設施 ； 結構 ； 颱風

並列摘要

Walk in tunnel type of greenhouse is widely used to grow crop in Taiwan. The walk in tunnel greenhouse with a low wind-resistance capacity may be damaged by typhoon in the summer in Taiwan. To improve the structural resistance of the walk in tunnel greenhouse is crucie to reduce the natural disaster loss. In this study, CPAMI greenhouse structure specifications were included in the analyses of wind-resistant performance of greenhouse. Four improved design models and a control structure was under comparison. At 47.5 m/s wind pressure, the deformation of the control structure was 22.6 mm. Deformations of the four improved designs: inverted T-type, Hill-type, V-Type, and 11/4” diameter were 18.1, 15.0, 13.9, 10.8 mm, respectively. Among the four models, 11/4” diameter model obtained the best wind-resistance capacity, but with the highest cost. The increase of pipe weight was 28%. Alternatively, Hill-type structure had lowest pipe weight increase (4.35%) with a lower deformation. Thus, Hill-type structural improvement is an economical choice for the greenhouse culture.

並列關鍵字

Walk in Greenhouse ； structures ； typhoons