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2003 Fiscal Year Final Research Report Summary

Ultimate Earthquake Resistant Capacity of CFT-Frame Based on Dynamic Collapse Behavior

Research Project

Project/Area Number 14550573
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Building structures/materials
Research InstitutionKumamoto University

Principal Investigator

SAISHO Motoo  Kumamoto University, Faculty of Engineering, Professor, 工学部, 教授 (40040448)

Project Period (FY) 2002 – 2003
KeywordsEarthquake resistant capacity / Concrete filled steel tube / Seismic response / Restoring force characteristics / Crack / Local buckling / Collapse of frame / Damage factor
Research Abstract

The seismic response and damage of many concrete filled steel tube frames (CFT frames) under strong ground motion have been analyzed numerically and it is pointed out that the ultimate earthquake resistant capacity of CFT frame, which is decided on the basis of the dynamic collapse of CFT frame, is strongly effected not only by the story-shear strength distribution and the column-over-design factor but also by the filled concrete-to-steel tube strength ratio.
To predict the ultimate earthquake resistant capacity of CFT frame and the effects of these design factors on it, a simple design formula is derived from the calculated seismic responses of CFT frame. It is ascertained that the formula is simple but it can approximate well the damage ratio of CFT frame that is corresponding to the ultimate earthquake resistant capacity of it.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] M.Saisho, M.Kato, S.Gao: "Local Buckling of CFT-Column under Seismic Load"Proceedings of 13^<th> World Conference on Earthquake Engineering (13WCEE). Paper.2614. 1-15 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Saisho, K.Goto: "Ultimate Earthquake Resistant Capacity of CFT-Frame"Proceedings of 13^<th> World Conference on Earthquake Engineering (13WCEE). Paper.2613. 1-15 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Saisho: "Dynamic Collapse of CFT-Frame under Extremely Strong Ground Motion"Proceedings of 13^<th> World Conference on Earthquake Engineering (13WCEE). Paper.1877. 1-15 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 最相完雄, 中山隆文, 高淑雲: "コンクリート充填円形鋼管柱の鋼管局部座屈に関する研究"日本建築学会構造系論文集. 第567号. 189-196 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 最相元雄: "強震動を受けるコンクリート充填鋼管多層骨組の損傷と終局耐震性能に関する研究"日本建築学会構造系論文集. 第577号. 137-144 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Saisho, M.Kato, S.Gao: "Local Buckling of CFT-Column under Seismic Load"Proceedings of 13^<th> World Conference on Earthquake Engineering (13WCEE). Paper No.2614. 1-15 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Saisho, K.Goto: "Ultimate Earthquake Resistant Capcity of CFT-Frame"Proceedings of 13^<th> World Conference on Earthquake Engineering (13WCEE). Paper No.2613. 1-15 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Saisho: "Dynamic Collapse of CFT-Frame under Extremely Strong Ground Motion"Proceedings of 13^<th> World Conference on Earthquake Engineering (13WCEE). Paper No.1877. 1-15 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Saisho, T.Nakayama, S.Gao: "Local Buckling of Concrete Filled Circular Steel Tube Column"Journal of Structural and Construction Engineering (AIJ). No.567. 189-196 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Saisho: "Seismic Response and Ultimate Earthquake Resistant Capacity of Concrete Filled Steel Tube Frame"Journal of Structural and Construction Engineering (AIJ). No.577. 137-144 (2004)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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