Rchr

J-GLOBAL ID：200901068233969992 Update date: Nov. 12, 2024

Ikago Kohju

イカゴコウジユ | Ikago Kohju

Affiliation and department：
Job title： Professor
Homepage URL (1)： https://sites.google.com/site/ikagolab/home

Research field (1)： Building structures and materials

Research keywords (6)：速度依存型ダンパー , 制振構造 , 免震構造 , 逆問題 , エネルギー変分原理 , 最適設計

Research theme for competitive and other funds (26)：

2003 - 現在建築構造物最適設計手法の実務利用に関する研究
1994 - 現在建築構造物地震時最大応答エネルギーの逆問題型変分原理
2021 - 2025 Development of a seismic response inverse method based on fish-bone model to estimate damage and physical parameters in buildings
2022 - 2024 軽量コンパクトなアクティブ・ダイナミック・マス制震ダンパーの開発
2022 - 2024 Development of a small-size and light-weight active inerter damper for seismic protection

2021 - 2024 質量可変型回転慣性質量ダンパーを用いた応答変位・加速度を共に低減する免震技術開発

2021 - 2023 長大斜張橋の地震時応答制御に有効なダイナミック・マス制振装置の開発

2021 - 2023 Development of an inerter-damper for the seismic protection of long-span suspension bridges

2020 - 2023 Development of an innovative inerter-damper for high-performance seismic isolation system

2020 - 2023 High-performance control of nonlinear shaking table tests performed for examinations of displacement suppression of seismic isolation buildings

2020 - 2023 超高層の耐震設計に死角はないか?-漸増ねじれ倒壊とそのカラクリ-

2019 - 2023 Development of a displacement dependent passive variable VC system for improving the seismic resistance of historic RC buildings

2019 - 2021 Challenge toward simultaneous reduction in displacement and acceleration in a low-frequency structure by physical implementation of rate-independent linear damping

2018 - 2021 Optimal design of energy absorbers in seismic response control of structures considering epistemic uncertainties

2018 - 2021 Feasibility study on variable inerter mass damper using hydraulic gear motor incorporated into seismic isolation structures

2018 - 2021 Development of a passive rate-independent linear damping device effective in displacement control of seismic isolated builings

2017 - 2021 Study on the techniques for improving the seismic resistance of school buildings damaged by 2015 Nepal-Gorkha earthquake

2016 - 2019 Development of the hybrid base isolation structure system with extreme long natural period by the dynamic mass and the variable oil damper

2015 - 2018 Feasibility study on base isolated structure incorporated with viscous mass damper

2015 - 2018 Sophistication and practical application of a smart-passive control device for the protection of buildings against long-period/long-duration ground motions

2014 - 2018 Development of energy harvesting technique from large scale structural vibration using large mass ratio TMD

2012 - 2015 Development of rotary inertial damper having force restriction mechanism for response control of seismically isolated structures

2011 - 2014 Evaluation and improvement of seismic performance for existing high-rise buildings subjected to high-level earthquake ground motions

2011 - 2014 Development of Displacement Control Design Method

2009 - 2011 Development of a tuned viscous mass damper system for seismic damage control of building structures.

2008 - Seismic control design using the Tuned Viscous Mass Dampers.

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Papers (453)：

Yusuke Suzuki, Mayako Tada, Ryuta Enokida, Jiro Takagi, Yoshikazu Araki, Sanjay Pareek, Sanghun Lee, Kohju Ikago, Jia Guo, Kshitij C. Shrestha, et al. Feasibility of sliding base isolation for rubble stone masonry buildings in the Himalayan Mountain range. Frontiers in Built Environment. 2024. 10
Wei Liu, Kohju Ikago, Jiang Liu. Modal decomposition of multi-degree-of-freedom structure with non-proportionally distributed rate-independent linear damping. Computers & Structures. 2024. 297. 107316-107316
Iori Fukuda, Kohju Ikago, Yoshikazu Araki, David J. Wagg. Inelastic torsional buckling of simple three-dimensional moment resisting frame. Frontiers in Built Environment. 2024. 10
Wei Liu, Yi-Qing Ni, Kohju Ikago, Wai Kei Ao. Seismic control of base-isolated structures using rate-independent damping devices. Journal of Building Engineering. 2023. 78. 107744-107744
毛塚尚太郎, 長浜慧昌, 五十子幸樹. 免震構造物の変位制御における減衰力の周波数帯域制限効果その2 分数次因果モデルによる因果的検討. 日本建築学会大会学術講演梗概集. 2023. 575-576

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MISC (11)：

五十子幸樹. ダイナミック・マスダンパーを用いた建築物振動制御. 制振技術. 2021. 43. 2-6
五十子幸樹. 超高層・免震建物の地震時過大変形に伴う諸問題の解決. 翠巒. 2020
IKAGO Kohju. ダイナミック・マスダンパーとその応用-質量増幅機構による構造制御-. THE STEEL STRUCTURAL TECHNOLOGY. 2019. 32. 377. 48-49
Kohju Ikago. Seismic Control of Building Structures. JABS. 2016. 131. 1681. 26-27
五十子幸樹. 免震制振国際共同研究の新しい枠組み. MENSHIN. 2016. 92. 1-2

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Patents (13)：

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Books (1)：

Displacement Control Design of Building Structures
Maruzen Publishing Co.,Ltd. 2012 ISBN:9784621086308

Lectures and oral presentations (378)：

質量分布や剛性分布が高さ方向に著しく変化する構造物への同調粘性マスダンパーの適用に関する一検討
(第10回構造物の安全性・信頼性に関する国内シンポジウム 2023)
免震構造物の変位制御における減衰力の周波数帯域制限効果その2 分数次因果モデルによる因果的検討
(2023年度日本建築学会大会(京都) 2023)
免震構造物の変位制御における減衰力の周波数帯域制限効果その1 複素減衰の帯域制限型モデルによる非因果的検討
(2023年度日本建築学会大会(京都) 2023)
An External Seismic Energy Dissipative System for Buildings using the Tuned Viscous Mass Damper
(2023年度日本建築学会大会(京都) 2023)
A Physical Realization Model for Approximating the Ideal Rate-independent Linear Damping Using the Tuned Viscous Mass Damper
(2023)

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Works (9)：

大阪第一地方合同庁舎耐震改修工事(構造設計)
2008 -
フジテック滋賀2期製作所研究塔(構造設計)
2006 -
グランドメゾン大手前タワー(構造設計)
2005 -
福岡国際会議場(構造設計)
2003 -
新中之島三井ビルディング(構造設計)
2002 -

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Education (2)：

- 2005 Kyoto University Graduate School, Division of Engineering 建築学専攻
- 1992 Kyoto University Faculty of Engineering 建築系学科

Professional career (1)：

博士(工学) (Kyoto University)

Work history (4)：

2013/02 - 現在 International Research Institute of Disaster Science Professor
2008/06 - 2013/01 東北大学工学研究科・工学部 Associate Professor
2005/01 - 2008/05 株式会社日建設計構造設計主管
1992/04 - 2004/12 株式会社日建設計

Committee career (11)：

2021/04 - 現在 Architectural Institute of Japan Chief of Subcommittee on Structural Control
2016/04 - 現在 (財)福島県建築安全機構構造計算適合性判定技術監視委員会副委員長
2010/04 - 2021/03 Architectural Institute of Japan Subcommittee on Structural Control
2018/11 - 2019/03 国立大学法人室蘭工業大学国立大学法人室蘭工業大学外部評価委員
2018/09 - 2018/12 公益社団法人日本地震工学会第15回日本地震工学シンポジウム運営委員会委員

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Awards (3)：

2016/09 - Japan Society for Promotion of Science Beset Reviewer Award 2017, Japan Society for Promotion of Science
2015/05/29 - 一般社団法人日本建築学会 2015年日本建築学会著作賞免震建物や超高層建物など、一般建築物と比較して大地震時に応答変位が過大となる構造物を対象とし、応答変位そのものを抑制する「変位制御設計」に関し、著者が長年精力的に取り組んで来た研究成果をまとめた著作である。本書で提案された先駆的な「変位制御設計」の社会的な重要性はますます高まっていくと考えられ、その理論的な基盤となるべき非常に優れた著作である。
2013/02 - Architectural Institute of Japan, Architectural Institute of Korea, and Architectural Society of China. Journal of Asian Architecture and Building Engineering, Best Papaer Award 2012 Best paper Award 2012, Journal of Asian Architecture and Building Engineering

Association Membership(s) (3)：

American Society of Civil Engineers , Japan Association for Earthquake Engineering , Architectural Institute of Japan

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