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1998 Fiscal Year Final Research Report Summary

Restoring Force Characteristics of CFT-Column under Seismic Load

Research Project

Project/Area Number 08455263
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

SAISHO Motoo  Kumamoto University, Department of Architecture and Civil Engineering, Professor, 工学部・環境システム工学科, 教授 (40040448)

Co-Investigator(Kenkyū-buntansha) MITSUNARI Kazuaki  Arai-Gumi Company, Engineering Department, Head of Engineers, 技術本部・技術部長
Project Period (FY) 1996 – 1998
KeywordsColumn / CFT / Crack / Ultimate State / Ultimate Strength / Superposed Strength / Restoring Force Characteristics / Restoring Force Model
Research Abstract

1) Experimental Study on Ultimate Behaviors of High-Strength Concrete Filled Steel Tube
To investigate the ultimate behavior of high-strength concrete filled steel tube (CFT), dynamic loading test of CFT column has been carried out. From the test results it is shown that the steel tube of CFT column cracks in the ultimate state and the fracture of CFT column is brittle.
2) Ultimate Bending Strength of High-Strength Concrete Filled Steel tube Column
On the basis of stub-column test of concrete filled steel tube and calculation of steel tube stress, the equation of confined concrete strength of CFT column is derived. By the use of the equation of confined concrete strength, the method to predict the ultimate bending strength of CFT column is proposed. This method can predict well the maximum bending strength of CFT column test even if CFT column is the super high-strength concrete filled steel tube.
3) Crack of Steel Tube and Plastic Deformation Capacity of Concrete Filled Steel Tube Column
The ultimate state of CFT column due to the steel tube crack is examined and the condition of fracture is obtained on the basis of test data. By the use of this fracture condition the equation to calculate the accumulated plastic deformation capacity of CFT column is proposed.
4) Restoring Force Characteristics and Model of Concrete Filled Steel Tube Column
A restoring force model of CFT column is obtained from the cyclic loading test of CFT column. The proposed restoring force model is composed of the Tri-linear model and the Clough model and easily applicable to seismic response analysis of CFT frames under strong ground motion. The proposed model is defined by the yield strength, the ultimate strength and the accumulated plastic deformation capacity of CFT column. By the use of the energy absorbing capacity of CFT column, it is ascertained that the presented model can predict well the restoring force characteristics of the CFT specimens.

  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 最相元雄, 岡部猛, 光成和昭: "超高強度コンクリート充填鋼管短柱の拘束効果と終局耐力に関する実験的研究"構造工学論文集. Vol.428. 351-359 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Mitsunari, M.Saisho: "Ultimate Strength and Plastic Deformation Capacity of CFT Beam-Column Subjected to Dynamic Load"Proceedings of the Eleventh World Conference on Earthquake Engineering (11WCEE). 414 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 最相元雄, 光成和昭: "超高強度コンクリート充填鋼管せん断曲げ柱の終局挙動に関する実験的研究"日本建築学会構造系論文集. 第520号. 133-140 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 最相元雄, 安部貴之, 中矢浩二: "超高強度コンクリート充填鋼管柱の終局曲げ耐力に関する研究"日本建築学会構造系論文集. 第523号. 133-140 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 最相元雄, 光成和昭, 松山輝男, 北村成久, 西元洋一: "Palmgren-Miner則によるコンクリート充填円形鋼管柱の鋼管亀裂と累積塑性変形能力に関する研究"鋼構造年次論文報告集. 第7巻. 277-284 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 最相元雄, 光成和昭, 松山輝男, 辻大介, 平山洋介: "コンクリート充填鋼管柱の動的復元力モデルの提案"鋼構造年次論文報告集. 第7巻. 285-292 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 最相元雄, 松山輝男: "コンクリート充填鋼管柱の鋼管亀裂と累積塑性変形能力に関する研究"日本建築学会構造系論文集. 第528号. 167-174 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Saisho, T.Matsuyama: "Restoring Force Characteristics and Model of Concrete Filled Steel-Tube Column"Proceedings of the Twelfth World Conference on Earthquake Engineering (12WCEE). 1090 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 最相元雄, 辻大介, 西元洋一: "コンクリート充填鋼管柱の復元力特性と復元力モデルに関する研究"日本建築学会構造系論文集. 第531号. 181-188 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Saisho, T.Okabe and K. Mitsunari: "Experimental Study on Confining Effect and Ultimate Strength of High-Strength Concrete Filled Steel Tube"Journal of Structural Engineering. 42B. 351-359 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Mitsunari and M.Saisho: "Ultimate Strength and Plastic Deformation Capacity of CFT Beam-Column Subjected to Dynamic Load"Proceedings of the Eleventh World Conference on Earthquake Engineering(11WCEE). No 414. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Saisho and K.Mitsunari: "Experimental Study on Ultimate Behaviors of High-Strength Concrete Filled Steel Tube"Journal of Structural and Construction Engineering(Transactions of Architectural Institute of Japan). 520. 133-140 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Saisho, T. Abe and K. Nakaya: "Ultimate Bending Strength of High-Strength Concrete Filled Steel-Tube Column"Journal of Structural and Construction Engineering(Transactions of Architectural Institute of Japan). 523. 133-140 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Saisho, K. Mitsunari and et al.: "Crack of Steel Tube and Accumulated Plastic Deformation Capacity of CFT Column on the Basis of the Palmgren-Miner Rule"Journal of Constructional Steel. 7. 277-284 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Saisho, K. Mitsunari and et al.: "Dynamic Restoring Force Model of Concrete Filled Steel Tube Column"Journal of Constructional Steel. 7. 285-292 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Saisho and T. Matsuyama: "Crack of Steel Tube and Plastic Deformation Capacity of Concrete Filled Steel Tube Column"Journal of Structural and Construction Engineering(Transactions of Architectural Institute of Japan). 528. 167-174 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Saisho and T.Matsuyama: "Restoring Force Characteristics and Model of Concrete Filled Steel-Tube Column"Proceedings of the Twelfth World Conference on Earthquake Engineering (12WCEE). No.1090. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Saisho, D. Tsuji and Y. Nishimoto: "Restoring Force Characteristics and Model of Concrete Filled Steel Tube Column"Journal of Structural and Construction Engineering (Transactions of Architectural Institute of Japan). 531. 181-188 (2000)

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

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Published: 2004-04-14  

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