Pre-stressed seismic wooden structural system with Butterfly-shaped wooden wall

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04798
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23010:Building structures and materials-related
• Research Institution: Shibaura Institute of Technology
• Principal Investigator: ISHIKAWA YUJI 芝浦工業大学, システム理工学部, 教授 (80421923)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: CLT / LVL / エンジリアリングウッド / ＳＤＧｓ / 耐震補強 / 耐震壁 / JIS(日本産業規格) / せん断圧縮特性

Outline of Final Research Achievements

This study first reports on the practical application of wooden butterfly-shaped block seismic walls, which were applied to the Owase City council building retrofitted in 2021 by CLT butterfly-shaped blocks as seismic retrofitting of the existing RC building. Because Owase City in Mie, which promoted SDG's activities and utilize local timber.The results of this study were compared with those of CLT and LVL in accordance with the concrete compression test based on JIS A1108, so that the material properties of the two types of engineering wood can be directly compared. The results of the study showed that the usefulness of CLT and LVL can be expressed with concrete values. Furthermore, by utilizing the research results, BLT, CLT and LVL butterfly block element tests were conducted, We will continue our research on a structural system that combines wooden butterfly block seismic walls and wooden displaced control structure as an issue to be considered in the future.

Free Research Field

建築構造

Academic Significance and Societal Importance of the Research Achievements

これまでと異なるアプローチによって、直接的にコンクリートとの材料特性の比較を行うことによって、具体的なエンジニアリングウッドの有用性を、これまでに耐震性能に関する研究成果が多く蓄積されている鉄筋コンクロート構造の研究成果と連動させて検討できる基礎データを構築した。また、CLT蝶形ブロック耐震壁による耐震補強ではあるが実用化がなされてことは、今後は、ＳＤＧｓを含めた資源循環型材料の利活用について推進したい事業主と共に、提案技術を発展拡大できる可能性があることが分かった。