2022 Fiscal Year Final Research Report
Development of a displacement dependent passive variable VC system for improving the seismic resistance of historic RC buildings
Project/Area Number |
19H02279
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 23010:Building structures and materials-related
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Research Institution | Hokkaido University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
五十子 幸樹 東北大学, 災害科学国際研究所, 教授 (20521983)
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Project Period (FY) |
2019-04-01 – 2023-03-31
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Keywords | パッシブ制振構造 / 地震応答制御 / 可変摩擦ダンパー / 剛性リセット式装置 / 鉄筋コンクリート構造 |
Outline of Final Research Achievements |
This research proposed a hybrid vibration control system consisting of a variable friction damper and a resettable stiffness type device with a displacement dependent characteristic that passively adapts to seismic inputs ranging from small to large levels. The dynamic characteristics of the variable friction damper and resettable stiffness type device were obtained through dynamic loading tests. Also, the response behavior of the parallel hybrid system of the variable friction damper and resettable stiffness type device was investigated through shaking table tests. Moreover, the seismic vibration control effects of buildings with the parallel hybrid system of the variable friction damper and resettable stiffness type device were numerically evaluated. Furthermore, the effective settings of the stiffness and damping force of the variable friction damper and resettable stiffness type device were investigated.
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Free Research Field |
構造工学、耐震工学、建築構造、制振構造、鉄筋コンクリート構造
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Academic Significance and Societal Importance of the Research Achievements |
歴史的に価値のある鉄筋コンクリート造建築物を保存活用し将来へ伝えていくことは重要であり、そのためには耐震性向上が不可欠となる。また、巨大地震災害に対する備えは現代社会の喫緊の重要課題である。その有効な対応策の一つに、制振構造の適用による建築物の耐震性向上が挙げられる。本研究では、小から極大レベルまでの地震動入力に対して受動的に可変適応する変位依存型の特性を持つ、可変摩擦ダンパーと剛性リセット式装置の併用によるハイブリット型制振システムを新たに提案し、実験および解析の両面から検討を行った。
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