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Fundamental Study on Elasto-Plastic Behavior of Concrete Encased Steel Members

Research Project

Project/Area Number 63550341
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 土木構造
Research InstitutionOsaka City University

Principal Investigator

KITADA Toshiyuki  Osaka City University, Department of Civil Engineering, Associate Professor, 工学部, 助教授 (30029334)

Co-Investigator(Kenkyū-buntansha) 酒造 敏廣  大阪市立大学, 工学部, 助手 (90137175)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1989: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1988: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsComposite structure / Composite column / compression / Torsion / Bond strength / 突起付鋼板 / 定着長 / 合成柱 / ねじりモ-メント / 圧縮強度 / 3軸応力状態にあるコンクリート
Research Abstract

1. The ultimate compressive load of concrete-encased steel short columns with circular cross-section is 1.3-1.6 times the cumulated load of the squash loads of the isolated steel tube and confined concrete. This is because the confined concrete is subjected to triaxial stresses at the ultimate state and then its apparent compressive strength increases.
2. The ultimate compressive load of concrete-encased steel short columns with rectangular cross-section can be approximated by the cumulated load of the confined concrete squash load and the steel plate ultimate load evaluated as the ultimate compressive load of a plate with all the edges built-in.
3. The mean shear stress-slip displacement curves at the interface of the outer steel plate with small ribs and confined concrete in the composite member were obtained having the rib height as parameter, and the transference mechanism of the force in the outer steel plate to the confined concrete is formulated.
4. The ultimate torsional moment of composite members with rectangular cross-section is 1.17-1.23 times the cumulated torsional moment of the fully plastic torsional moment of the outer steel plate and the collapse torsional moment of the isolated concrete section. However, supposed that the ultimate shear stress of confined concrete is taken as 0.5 tines the compressive strength of concrete, the ultimate torsional moment can be accurately evaluated by the cumulated torsional moment.
5. Composite members subjected to compression or torsion possesses such an excellent ductility that no reduction of strength is observed even after the ultimate state.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 北田俊行・吉田康樹・中井博: "コンクリ-トを充填した鋼管短柱の弾塑性挙動に関する基礎的研究" 構造工学論文集. 34.A. 255-264 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 北田俊行・中井博・才村幸生・吉田康樹: "突起付鋼板とコンクリ-トとの境界面の付着挙動および付着強度に関する実験的研究" 合成構造の活用に関するシンポジウム講演論文集. 2. 183-188 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 北田俊行・中井博・才村幸生・吉田康樹: "突起付鋼板を用いた合成角形短柱の耐荷力に関する実験的研究" 合成構造の活用に関するシンポジウム講演論文集. 2. 189-194 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 北田俊行・中井博・才村幸生・神崎昭雅: "コンクリ-トを充てんした鋼製箱形断面部材の終局ねじりモ-メントに関する実験的研究" 構造工学論文集. 37.A. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kitada, T., Y. Yoshida and H. Nakai: "Fundamental Study on Elastoplastic Behavior of Concrete Encased Steel Tubular Columns" Journal of Structural Engineering, JSCE, Vol.34A, pp.255-264, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kitada, T., H. Nakai, Y. Saimura and Y. Yoshida: "Experimental Study on Bond Strength of Intersection between Concrete and Rolled Steel Plate with Small Ribs" Proceedings of the 2nd Symposium on Research and Application of Composite Constructions, JSCE, pp.183-188, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kitada, T., H. Nakai, Y. Saimura and Y. Yoshida: "Experimental Study on Ultimate Strength of Composite Square Short Columns Using Rolled Steel Plate with Small Ribs" Proceedings of the 2nd Symposium on Research and Application of Composite Constructions, JSCE, pp.189-194, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kitada, T., H. Nakai, Y. Saimura and A. Kanzaki: "Experimental Study on Ultimate Torsional Moment of Concrete Encased Steel Box Members (to be presented)" Journal of Structural Engineering, JSCE, Vol.37A, 1991.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 北田俊行・中井博・才村幸生・吉田康樹: "突起付鋼板とコンクリ-トとの境界面の付着挙動および付着強度に関する実験的研究" 合成構造の活用に関するシンポジウム講演論文集. 2. 183-188 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 北田俊行・中井博・才村幸生・吉田康樹: "突起付鋼板を用いた合成角形短柱の耐荷力に関する実験研究" 合成構造の活用に関するシンポジウム講演論文集. 2. 189-194 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 北田俊行・中井博・才村幸生・神崎昭雅: "コンクリ-トを充てんした鋼製箱形断面部材の終局ねじりモ-メントに関する実験的研究" 構造工学論文集. 37A. (1991)

    • Related Report
      1989 Annual Research Report
  • [Publications] 北田俊行,吉田康樹,中井博: 構造工学論文集. Vol.34A. 255-264 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 吉田康樹,中井博,北田俊行,木村幸生: 土木学会第43回年次学術講演会. 43. 258-259 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 北田俊行,中井博,木村幸生,吉田康樹: 土木学会関西支部年次学術講演会概要集. (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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