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Dynamic Ultimate Bahavier of Reinforced Concrete Hollow Pier under Combined Loads

Research Project

Project/Area Number 07455181
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

IEMURA Hirokazu  Fac.of Engineering, Kyoto University Professor, 工学研究科, 教授 (10026362)

Co-Investigator(Kenkyū-buntansha) INOUE Susumu  Osaka Institute of Technology, Fac.of Engineering, Assoc.Professor, 工学部, 助教授 (30168447)
TAKAHASHI Yoshikazu  Fac.of Engineering, Kyoto University Research Associate, 工学研究科, 助手 (10283623)
IGARASHI Akira  Fac.of Engineering, Kyoto University Assoc.Professor, 工学研究科, 助教授 (80263101)
WATANABE Fumio  Fac.of Engineering, Kyoto University Professor, 工学研究科, 教授 (50026267)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 1996: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥5,400,000 (Direct Cost: ¥5,400,000)
KeywordsHigh Pier / Hollow Section / Reinforced Concrete / Shear Failure / Flexural Failure / Model Experiment / Ultimate Strength / Energy Dissipation / ひび割れ進展
Research Abstract

This research presents results from testing and analysis of RC hollow piers to clarify their fundamental behavior under combined loads.
1.The ultimate displacement of RC hollow beams are smaller than the same-size filled beam, and the capacity of displacement and energy dissipation tend to be lower than that. At the ultimate state, the energy dissipation is about 20% inferior to the filled beam. After the hollow beam reaches the peak strength, the deterioration of its strength is rapid.
2.In the flange part of a hollow section there are many flexural cracks. Once these cracks develop into the web part, they are turned into shear cracks. This phenomenon occurs not only in case of shear failure specimen but flexural failure specimen. This is why the narrow width of the web of the hollow section requires careful consideration on its shear strength, when hollow section is adopted.
3.The experimental result of separation of pier displacement into flexural and shear components shows that the influence of shear is increasing when the cyclic load becomes larger even if the flexural failure dominates. This leads to the conclusion that the analysis that deals with only flexural behavior has the limitation when we analyze RC hollow piers, so the shear behavior must be considered in cojunction with flexural behavior.
4.When high axial loading is used, the load-displacement curve shows that the displacement capacity tends to become worse because of the rebar buckling and the spalling of cover concrete. From this it follows that inprovement of structural details, such as increasing the shear reinforcement ratio, is important to enhance the displacement capacity of hollow piers under high axial load.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 家村浩和: "橋梁の被害と復旧・補強" 安全工学. Vol. 34. 425-435 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 家村浩和: "中空断面RC部材のせん断挙動に関する解析" 土木学会 年次学術講演概要集. 第5部. 960-961 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 家村浩和: "中空断面RC梁部材の正負交番荷重下における曲げせん断特性" 土木学会 年次学術講演概要集. 第5部. 830-831 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 家村浩和: "複合力が作用するRC柱部材の修正圧縮場理論によるせん断解析" 土木学会 年次学術講演概要集. 第5部. 760-761 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 井上晋: "中空断面RC部材のせん断耐荷挙動に関する検討" コンクリート工学年次論文報告集. Vol. 18, No. 2. 677-682 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 井上晋: "Flexural and Shear Behavier of Reinforced Concrete Hollow Beams under Reversed Cyclic Loads" Proc. of 11th World Conference in Earthquake Engineering. Paper No. 1359. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hirokazu Iemura: "Damage of Bridges and Retrofit" Journal of Japan Society for Safety Engineering. Vol.34. 425-435 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hirokazu Iemura: "Shear Analysis of RC Hollow Beams" Proc.of the 50th Annual Conference of JSCE. Vol.5. 960-961 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hirokazu Iemura: "Experiment of RC Hollow Beams under Reversed Cyclic Loads" Proc.of the 50th Annual Conference of JSCE. Vol.5. 830-831 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hirokazu Iemura: "Shear Analysis of RC Hollow Columns under Combined Loads" Proc.of the 51st Annual Conference of JSCE. Vol.5. 760-761 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Susumu Inoue: "Study on Shear Behavior of RC Hollow Beams" Proc.of Annual Conference of JCI. Vol.18, No.2. 677-682 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Susumu Inoue: "Flexural and Shear Behavior of Reinforced Concrete Hollow Beams under Reversed Cyclic Loads" Proc.of 11th World Conference on Earthquake Engineening. Paper No.1359. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 家村浩和: "複合力が作用するRC柱部材の修正圧縮場理論によるせん断解析" 土木学会 年次学術講演概要集. 第5部. 760-761 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 井上晋: "中空断面RC部材のせん断耐荷挙動に関する検討" コンクリート工学年次論文報告集. Vol.18,No.2. 677-682 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 井上晋: "Flexural and Shear Behavier of Reinforced Concrete Hollow Beams under Reversed Cyclic Loads" Proc.of 11th World Conference on Earthquake Engineering. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 高橋良和: "耐震工学へのオブジェクト指向技術の適用に関する1、2の考察" 土木情報システム論文集. Vol.5. 123-130 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 家村浩和: "中空断面RC橋脚のせん断特性に関する検討" 土木学会関西支部年次学術講演概要. (発表予定). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 家村浩和: "中空断面RC柱部材の曲げ変形性能に関する実験的研究" 土木学会関西支部年次学術講演概要. (発表予定). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 家村浩和: "中空断面RC部材のせん断挙動に関する解析" 土木学会年次学術講演概要集. 第5部. 960-961 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 家村浩和: "中空断面RC梁部材の正負交番荷重下における曲げせん断特性" 土木学会年次学術講演概要集. 第5部. 830-831 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 井上 晋: "Flexural and Sheer Behavior of Reinforced Concrete Hollow Beams under Reversed Cyclic Loads" Proc. of 11th World Conference on Earthquake Engineering. 発表予定 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 家村浩和: "橋梁の被害と復旧・補強" 安全工学. Vol.34. 425-435 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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