Comparative evaluation of damping performance of hysteretic dampers for high-rise buildings under strong winds and gusts

• Project/Area Number: 17K06643
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Kobe University
• Principal Investigator: Takeuchi Takashi 神戸大学, 工学研究科, 助教 (80624395)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 動的風応答計算 / 立ち上がり時間の短い突風 / 載荷速度 / 数値流体計算 / 高速載荷 / 建築構造・材料 / 風力 / 流体

Outline of Final Research Achievements

To clarify the effects of the strain rate on the lateral load-displacement relationship of a hysteretic damper and the effects of the mean wind force on the response of buildings with hysteretic dampers under strong winds and gusts, this study have investigated the unsteady wind force acting on buildings under gusts by using a computational fluid dynamics software. And the dynamic behavior of a hysteretic damper have been experimentally investigated by using a high speed actuator. In addition, the response of buildings with hysteretic dampers under strong winds have been numerically investigated.

Academic Significance and Societal Importance of the Research Achievements

本研究で実施した風外力に対する履歴ダンパーの特性に関する検討および，履歴ダンパー付き建物の動的風応答特性の検討の成果は，これまでに十分に明らかにされていなかった風荷重時のダンパーの履歴挙動の解明につながり，風外力を受ける建物に履歴ダンパーを用いた際の特性を把握する上での資料になると共に，その効果を検討する上での一助となるものであり，延いては，風外力が支配的となる高層建築物における履歴ダンパーの利活用の幅の拡大に繋がるものである。

Research Products

• [Journal Article] STUDY ON ULTIMATE STRENGTH AND DEFORMATION CAPACITY OF CONFINED STEEL PANELS (2020)
  • Author(s): 竹内 崇、孫 玉平
  • Journal Title: Journal of Structural and Construction Engineering (Transactions of AIJ) Volume: 85 Issue: 768 Pages: 263-273
  • DOI: 10.3130/aijs.85.263
  • NAID: 130007802871
  • ISSN: 1340-4202, 1881-8153
  • Peer Reviewed
• [Journal Article] Effects of wind direction on local wind force and wind response of a building under short-rise-time gusts (2018)
  • Author(s): Takashi Takeuchi, Naohiro Takeuchi, Junji Maeda, Yong Chul Kim
  • Journal Title: Proceedings of 7th International Symposium on Computational Wind Engineering Volume: -
  • Peer Reviewed
• [Journal Article] Characteristics of local wind force and wind response of a building under short-rise-time gusts (2017)
  • Author(s): Takashi TAKEUCHI, Naohiro Takeuchi, Junji Maeda, Yong Chul Kim
  • Journal Title: Proceedings of 9th Asia-Pacific Conference on Wind Engineering Volume: 1
  • Peer Reviewed
• [Presentation] Effects of wind direction on local wind force and wind response of a building under short-rise-time gusts (2018)
  • Author(s): Takashi TAKEUCHI, Naohiro TAKEUCHI, Junji MAEDA, Yong Chul KIM
  • Organizer: The 7th International Symposium on Computational Wind Engineering 2018.
  • Int'l Joint Research
• [Presentation] 突風下の木造住宅の柱-土台接合部の引き抜き性能に及ぼす載荷速度の影響に関する実験的研究（その2 引き寄せ金物による接合） (2018)
  • Author(s): 竹内崇，孫玉平
  • Organizer: 日本建築学会大会
• [Presentation] Unsteady wind force on a low-rise building under a short-rise-time gust (2017)
  • Author(s): Takashi Takeuchi
  • Organizer: International Symposium on Novel Engineering Materials and Structures
  • Int'l Joint Research