Development of rotary inertial damper having force restriction mechanism for response control of seismically isolated structures
Project/Area Number |
24360220
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Building structures/materials
|
Research Institution | Tohoku University |
Principal Investigator |
IKAGO Kohju 東北大学, 災害科学国際研究所, 教授 (20521983)
|
Co-Investigator(Kenkyū-buntansha) |
IKENAGA Masahiro 東北大学, 工学研究科, 助教 (50552402)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2014: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2013: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2012: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
|
Keywords | ダイナミック・マス / 変位制御 / 免震構造 / 最適制御 / 定点理論 / 軸力リリーフ機構 / ダンパー / 振動制御 / 変位制御設計 / 増幅機構 / フライホイール / 軸力制限 |
Outline of Final Research Achievements |
This research work derived a closed form optimal design of a new damper system consisting of rotary inertial damper having a force restriction mechanism and a spring element connecting it to the structure. The optimal damper restriction force and spring stiffness are determined such that the peak of the acceleration amplification factor obtained by linearizing the hysteretic property of the force restriction mechanism is equal to the amplification factor at the fixed point of the resonance curve. Furthermore, series of experiments using small scale and full scale damper are conducted to validate the effectiveness of the proposed damper.
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Report
(4 results)
Research Products
(25 results)