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木ダボによる大断面円柱材の縦継ぎ(第2報)縦継ぎされた円柱材の曲げ性能

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Title: 木ダボによる大断面円柱材の縦継ぎ(第2報)縦継ぎされた円柱材の曲げ性能
Other Titles: End joint with glued-in hardwood dowels in large section column timber II. Bending properties of column timbers jointed with glued-in hardwood dowels.
Authors: 藤田, 誠1 Browse this author
小泉, 章夫2 Browse this author →KAKEN DB
佐々木, 貴信3 Browse this author
飯島, 泰男4 Browse this author
樋口, 聡5 Browse this author
原田, 浩司6 Browse this author
Authors(alt): Fujita, Makoto1
Koizumi, Akio2
Sasaki, Takanobu3
Iijima, Yasuo4
Higuchi, Satoshi5
Harada, koji6
Keywords: 引抜型接合具
無垢材
スギ
Issue Date: 1-Aug-2004
Publisher: 日本木材加工技術協会
Journal Title: 木材工業
Volume: 59
Issue: 8
Start Page: 353
End Page: 359
Abstract: The application of glued-in hardwood dowels to end-jointing of large section column timbers was considered. Test column timbers were glued laminated timber (GLT) and solid wood. Test column timbers were made of sugi (Cryptomeria japonica) and were end-jointed with hard wood dowels (Acer saccharum). In this study, we maed a series of four points bending tests to evaluated bending strength and stiffness for jointed column timbers. For GLT colums, the ratio between the experimental MOR and the calculated MOR in Type I and II were 0.809 and 0.995. For solid colums, the experimental MOR were lower than the calculated values, but variations of the experimental MOR were small. The ratio between the experimental MOR and the calculated MOR in Type III was 0.854 on average. For solid and GLT colums. the calculated deflection considering additional deflection caused by the pull-out displacement of dowels did not agree with the experimental values. This is because the end-joint cross section was glued together.
木ダボを引抜抵抗型の接合具として利用した構造材の縦継ぎに関する一連の研究がなされている。本研究の目的は、引抜型接合具としての木ダボを大断面の無垢材に適用した場合の曲げ性能の把握である。前報では、乾燥工程において被着材に生じる断面内での水分傾斜の影響を把握するため、被着材含水率の木ダボ引抜性能におよぼす影響を実験的に検討した。本報では縦継ぎされた大断面無垢材が実用的な耐力を有するか把握するため曲げ試験を行った。
Rights: 著作権は日本木材加工技術協会にある。利用は著作権の範囲内に限られる。
Type: article
URI: http://hdl.handle.net/2115/68157
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小泉 章夫

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