2023 Fiscal Year Final Research Report
Proposal of a universal design method for wooden vibration control housing that enables continued use after a large earthquake
| Project/Area Number |
19H00790
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Medium-sized Section 23:Architecture, building engineering, and related fields
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
Sakata Hiroyasu 東京工業大学, 環境・社会理工学院, 教授 (80205749)
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| Co-Investigator(Kenkyū-buntansha) |
山崎 義弘 国立研究開発法人建築研究所, 材料研究グループ, 主任研究員 (70644425)
松田 和浩 名城大学, 理工学部, 准教授 (80567397)
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| Project Period (FY) |
2019-04-01 – 2024-03-31
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| Keywords | 戸建て木質住宅 / 木質耐力壁 / 木質制振住宅 / 木質制振壁 / 耐力壁の性能劣化 / 制振設計法 |
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| Outline of Final Research Achievements |
The application of vibration control systems can improve the seismic performance and continuous functionality of wooden houses. This research proposed a universal seismic design method for wooden houses with energy dissipation wall, while its high capacity was also confirmed by experiments and numerical analysis. Initially, this research provided a method for evaluating the capacity reduction effects and estimating the damping ratio of timber wall under a deformation history. Using this method, a response spectrum corresponding to the deformation history is derived and verification results showed its rationality. By integrating these discussions, the proposed method can predict the maximum story drift, residual seismic capacity, and other indexes when structures are subjected to multiple earthquakes. Furthermore, a quantitative comparison of the residual seismic capacity presented that wooden houses with vibration control systems exhibit higher capacity than those without such systems.
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| Free Research Field |
建築構造
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| Academic Significance and Societal Importance of the Research Achievements |
地震による経済的損失を抑え、早期復興を実現するには、国民の生活基盤を支える戸建て木質住宅の耐震性向上は最優先課題の一つであり、建物の倒壊を防ぐという最低限の目標だけでなく、継続使用性まで確保されなければならない。木質住宅に対し制振デバイスを適用するための汎用設計法が存在しないため、その普及が妨げられている。本研究は、構造体の損傷だけでなく、仕上げ材などの非構造体の損傷にも着目し、地震により構造体・非構造体に生じる損傷の多寡と性能劣化・修復費用の関係を調べ、さらには制振デバイスによる損傷抑制効果を明示できる木質制振住宅の設計法を提案し、制振技術の健全な普及に貢献しうるものである。
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