@article{oai:repository.naro.go.jp:00006816,
 author = {YOSHIKOSHI, Hisashi and 吉越, 恆 and 吉越, 恒 and 松田, 周 and MATSUDA, Shu and 川嶋, 浩樹 and KAWASHIMA, Hiroki},
 journal = {農研機構研究報告, Journal of the NARO Research and Development},
 month = {Oct},
 note = {The design strength of a greenhouse constructed using scaffold materials was analyzed by three-dimensional structural analysis under required wind and snow loads. The greenhouse was built on an empirical research site along the southern coast of Iwate Prefecture and published as a construction manual, In addition, we calculated three strengthened models to provide a reinforced
structure that is capable of withstanding heavier snowfall.
 The original model of the greenhouse structure was resistant to a snow load of 40 cm in depth as well as a wind load of 35 m/s.
However, under a snow load of 67 cm in depth, even when no structural member of the greenhouse exceeded the allowable bending stress, the original model needed an additional supporting structure. This was because the deflection of the rafter significantly exceeded the guideline for deformation.
 The strengthened models that added post, beam, and strut support to the rafter into the original structure without an interior column successfully suppressed the deformation of the rafter. However, under a snow load of 75 cm in depth, a particular part of the connection member subject to excess bending might be damaged. The reinforcement employing the interior column to the
structure,even when the column span is widened from 1.8 m to 2.0 m,may have still greater endurance to a heavy snow area., 現地施工した建設足場資材利用園芸ハウスの構造解析を行い，耐候性を評価し，耐雪性を向上させる補強方法を検討した．耐候性の評価では，概ね耐風速35 m/s，耐積雪深40 cm の設計強度が確認され，台風被害が少なく，積雪の少ない三陸沿岸南部では十分であるが，より積雪の多い県内他地域の設計用積雪深67 cm では，構造体の許容応力度は範囲内にあるものの，無柱断面における垂木のたわみが許容変形限界を大きく超えるため，垂木を支える補強が不可欠であった．現地施工モデルに3 種の耐雪補強方法を設定し，耐雪性を比較したところ，現地施工モデルの無柱断面に，作業性を悪化させないよう中柱を設置せず，垂木を支持する束，および梁と方づえを追加した補強方法では，屋根のたわみが軽減される可能性が示された．しかし，構造の一部にクランプの破壊に至るような曲げモーメントが作用することも予想されたため，75 cm を超える積雪地においては，中柱で支持する耐雪補強が望ましい．中柱を伴う補強方法では，資材に伴うコスト増を抑えるためにスパンを1.8 m から2.0 m に広げても，中柱を設置しない補強方法より構造全体の余裕が高まることから，安全かつ効果的な耐雪補強方法と考えられた．, 6章: 営農再開に向けた施設園芸の復興支援 /原著論文
Chapter6: Support and research trials for reconstruction of horticultural production areas toward the resumption of farming /Original articule},
 pages = {191--198},
 title = {岩手県沿岸地域の震災復興に資する園芸施設の現地評価: 第2報 建設足場資材利用園芸ハウスの耐候性と補強方法},
 volume = {8},
 year = {2021},
 yomi = {ヨシコシ, ヒサシ and マツダ, シュウ and カワシマ, ヒロキ}
}