Study on Scale Effect of Miniaturization for Structural Test Specimen

2022 Fiscal Year Final Research Report

• Project/Area Number: 20H03047
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 40020:Wood science-related
• Research Institution: Oita University
• Principal Investigator: TANAKA Kei 大分大学, 理工学部, 准教授 (00325698)
• Co-Investigator(Kenkyū-buntansha): 森 拓郎 広島大学, 先進理工系科学研究科(工), 准教授 (00335225)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 構造実験 / 縮小試験体 / せん断強度 / ドリフトピン接合 / GIR接合 / モーメント抵抗接合 / 寸法効果

Outline of Final Research Achievements

In this study, full-scale, 1/2, and 1/3 laminated lumber was manufactured based on JAS. Material and basic joints tests which are important structural elements, were carried out to conducted on the effects of material anisotropy and dimensional effects. For the purpose of practical verification, and reverse symmetrical shear test and a JIS chair-type shear test were performed using their, and the shear performance was evaluated. In addition, in order to verify the structural characteristics of the column-to-beam moment resistance joint using specimens of steel plate-inserted drift-pin joints, and GIR joint with full-scale and 1/3 scale, the size effect was investigated.

Free Research Field

建築構造学

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、現在急速に進んでいる木造建築の大型化や高層化に対して必要な新しい技術開発とその構造性能や安全性の検証において、他構造と同様の縮小モデル実験を効率的に実施し、その成果を実際の建物の設計に反映させるために不可欠なものである。また、現在実施されている縮小モデルによる構造検証に対して、その危険性や留意点について警鐘を鳴らすとともに、安全な活用に向けた一案を提示するものである。