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Seismic Performance of Reinforced Concrete Columns Confined in Square Steel Tube with Thin Steel Wall

Research Project

Project/Area Number 09650630
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Building structures/materials
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

SAKINO Kenji  Human-Environment Studies, KYUSHU UNIVERSITY,Professor, 人間環境学研究科, 教授 (70037985)

Co-Investigator(Kenkyū-buntansha) YUPING Sun  Human-Environment Studies, KYUSHU UNIVERSITY,Associate Professor, 人間環境学研究科, 助教授 (00243915)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 1998: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1997: ¥2,300,000 (Direct Cost: ¥2,300,000)
KeywordsTubed column / Square steel tube / Width to wall-thickness ratio / Cyclic shearing force / Axial load level / Shear capacity / Flexural capacity / Deformation capacity / せん断破壊 / 耐震性
Research Abstract

In the experimental phase of research, total of twenty-three reinforced concrete columns confined in square steel tube (tubed columns) were subjected to cyclic shearing force and deformed in a double curvature pattern. The experimental parameters were aspect ratio of column (2.0-4.0), width to wall-thickness ratio (B/t=28- 117), and magnitude of axial load. The following conclusions are reached on bases of the research.
1. The failure modes of tubed columns with aspect ratio of 2.0 and 4.0 are shear failure and flexural failure, respectively. It is noteworthy that lateral deformation capacity is greatly enhanced with the decrease in Bit ratio and with the decrease of axial load level even in the short columns failed in shear.
2. The flexural strengths of columns can be satisfactorily evaluated using the simplified method that utilizes the equivalent stress block based on the stress-strain model for confined concrete proposed by Sakino and San. They should be enhanced using a factor that takes the effect of extra confinement from end stubs into consideration.
3. The lateral load capacities, as dominated by shear, for short column specimens can be fairly evaluated using AIJ-A method, which is analytical method based on plastic theory, although it underestimates the capacity of specimens with large lateral steel ratios. On the other hand, the Arakawa's empirical shear formula also can be used.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 安田健太郎,Aklan Amin,孫玉平,崎野健治: "鋼管横補強正方形RC柱の耐震性能に関する実験的研究 その1 せん断スパン比1.5の柱の実験" 日本建築学会研究報告 九州支部. 第37号・1. 213-216 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 安田健太郎,Aklan Amin,孫玉平,崎野健治: "鋼管横補強正方形RC柱の耐震性能に関する実験的研究 その2 せん断スパン比1.0の柱の実験" 日本建築学会研究報告 九州支部. 第37号・1. 209-212 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 安田健太郎,Aklan Amin,孫玉平,崎野健治: "鋼管横補強正方形RC短柱の変形性能に関する実験的研究" コンクリート工学年次論文報告集. 第20巻第1号. 551-556 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 川口晃,安田健太郎,孫玉平,崎野健治,A.Aklan: "鋼管横補強正方形RC短柱の耐震性能 その1 実験概要" 日本建築学会大会学術講演梗概集. 構造IV. 283-284 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 安田健太郎,孫玉平,崎野健治,A.Aklan: "鋼管横補強正方形RC短柱の耐震性能 その2 実験結果" 日本建築学会大会学術講演梗概集. 構造IV. 285-286 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Sun,K.Sakino,A.Aklan,Y.Ikenono: "Ultimate Strength and Deformability of RC Column Retrofitted by Square Steel Tube" Proceedings of the 2^<nd> International RILEM Conference. 619-632 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Kawaguchi, K.Yasuda, A.Aklan, Y.Sun, and K.Sakino: "Seismic Performance of R/C Columns Retrofitted by Square Steel Tube Part 1 Experimental Result of Columns with Shear Span Ratio of 1.5" AIJ Kyushu Chapter Architectural Research Meeting (Structure). Vol.37. 209-212 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Yasuda, A.Aklan, Y.Sun and K.Sakino: "Seismic Performance of R/C Columns Retrofitted by Square Steel Tube Part 2 Experimental Result of Columns with Shear Span Ratio of 1.0" AIJ Kyushu Chapter Architectural Research Meeting (Structure). Vol.37. 213-216 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Yasuda, A.Aklan, Y.San and K.Sakino: "Deformability of RC Short Columns confined by Square Steel Tube" Proceeding of the Japan Concrete Institute. Vol.20, No.1. 551-556 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Kawaguchi, K.Yasuda, Y.Sun, K.Sakino and A.Aklan: "Seismic behavior of R/C Short Columns Confined by Summaries of Technical Papers of Square Steel Tube Part 1 Outlines of test" Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan. Structures IV. 283-284 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Yasuda, Y,Sun, K.Sakino and A.Aklan: "Seismic behavior of R/C Short Columns Confined by Summaries of Technical Papers of Square Steel Tube Part 2 Test Results" Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan. Structures IV. 285-286 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Sun, K.Sakino, A.Aklan and Y.Ikenono: "Ultimate Strength and Deformability of RC Column Retrofitted by Square Steel Tube" Proceedings of the 2^<nd> International RILEM Conference. 619-632 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 川口晃,安田健太郎,孫玉平,崎野健治,A.Aklan: "鋼管横補強正方形RC短柱の耐震性能 その1 実験概要" 日本建築学会大会学術講演梗概集. 構造IV. 283-284 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 安田健太郎,孫玉平,崎野健治,A.Aklan: "鋼管横補強正方形RC短柱の耐震性能 その2 実験結果" 日本建築学会大会学術講演梗概集. 構造IV. 285-286 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Sun,K.Sakino,A.Aklan,Y.Ikenono: "Ultimate Strength and Deformability of RC Column Retrofitted by Square Steel Tube" Proceedings of the 2^<nd> International RILEM Conference. 619-632 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 孫玉平,池之野陽一,安田健太郎,Aklan Amin,崎野健治,: "鋼管横補強柱の塑性ヒンジ長さの推定" 日本建築学会研究報告 九州支部. 第38号・1 印刷中. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 安田健太郎,孫玉平,崎野健治,Aklan Amin: "鋼管横補強正方形RC柱の耐力評価" 日本建築学会研究報告 九州支部. 第38号・1 印刷中. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 池之野陽一,孫玉平,崎野健治: "角形鋼管横補強RC柱の曲げ終局強度について" 日本建築学会研究報告 九州支部. 第37号・I(印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 安田健太郎,Aklan Amin,孫玉平,崎野健治: "鋼管横補強正方形RC柱の耐震性能に関する実験的研究 その1 せん断スパン比1.5の柱の実験" 日本建築学会研究報告 九州支部. 第37号・I(印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 安田健太郎,Aklan Amin,孫玉平,崎野健治: "鋼管横補強正方形RC柱の耐震性能に関する実験的研究 その2 せん断スパン比1.0の柱の実験" 日本建築学会研究報告 九州支部. 第37号・I(印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 安田健太郎,Aklan Amin,孫玉平,崎野健治: "鋼管横補強正方形RC短柱の変形性能に関する実験的研究" コンクリート工学年次論文報告集. 第20号(印刷中). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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