Clarification of shear mechanism and vibration properties of large timber joints

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K06157
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 40020:Wood science-related
• Research Institution: Hokkaido University
• Principal Investigator: Sawata Kei 北海道大学, 農学研究院, 准教授 (10433145)
• Co-Investigator(Kenkyū-buntansha): 冨高 亮介 地方独立行政法人北海道立総合研究機構, 森林研究本部 林産試験場, 研究職員 (40782545)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: ドリフトピン / 仮動的試験 / モーメント抵抗型接合 / 固有周波数 / 鋼板間隔

Outline of Final Research Achievements

The static lateral loading test and pseudo dynamic loading test were conducted on the multiple shear drift-pinned timber joints, and the shear behavior and vibration properties were investigated on the joints with different steel plate arrangement and number of steel plate. The structural performance of drift-pinned joints and moment resisting joints were increased when the number of inserted steel plate increased. The type of increased structural performance depended on the arrangement of steel plates. From the pseudo dynamic loading test, the response of moment resisting joints depended on the input frequency. The frequency that exhibited large response obtained from the pseudo dynamic loading test was close to that calculated from the initial stiffness obtained from the static lateral loading test.

Free Research Field

木質構造

Academic Significance and Societal Importance of the Research Achievements

本研究では、鋼板の配置と枚数が鋼板複数枚挿入ドリフトピン接合部のせん断挙動および振動特性に与える影響を調べた。その結果、この接合部のせん断挙動を、降伏理論および弾性床上の梁理論を用いて定性的に評価することができた。また静的性能と仮動的性能の関係性も明らかとなり、学術的に意義深い。この成果は、大規模木造接合部へこの接合法を適用する可能性を開くことになり、社会的意義も大きい。