2023 Fiscal Year Final Research Report
Development of isolation technology for responses using variable inerter mass damper
Project/Area Number |
21H01483
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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 | Kansai 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)
榎田 竜太 東北大学, 災害科学国際研究所, 准教授 (20788624)
松田 敏 関西大学, 環境都市工学部, 教授 (60278603)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | ダイナミック・マス / 免震構造 / 性能可変 / 動的加力実験 / 長周期地震動 |
Outline of Final Research Achievements |
We developed a "variable-mass rotary inertia mass damper" (hereinafter denoted as "variable-inerter damper"), in which the added inerter changes according to the response, and clarified the performance of the developed damper through dynamic loading experiments and shake table experiments. We also proposed a simulation analysis method for the developed variable inerter damper, especially a numerical analysis method for when the inerter changes, and clarified the validity of the proposed method through its consistency with the experimental results. In addition, we clarify the design method of this damper and its advantages over other dampers when introducing a variable inerter damper into the seismic isolation layer of a base-isolated structure through time history response analysis. In particular, it was shown that during long-period, long-duration earthquakes, both the displacement of the seismic isolation layer and the response acceleration can be suppressed more than other dampers.
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Free Research Field |
制振構造
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Academic Significance and Societal Importance of the Research Achievements |
ダイナミック・マスは現在、建築構造分野で注目されている技術の一つである。その中でも、性能が変わるといった研究は他に類を見ない。また免震構造については昨今の大規模地震の頻発からも有効性が改めて取りざたされており、今後の免震構造における性能の高度化は必要になる可能性も低くない。本研究は、この免震構造とダイナミック・マスの融合を、質量可変という今までにない切り口で遂行した研究であり、今後の免震構造の高性能化の一翼を担う可能性があると考えられ、学術的意義、社会的意義の大きい研究であったと考えている。
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