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1998 Fiscal Year Final Research Report Summary

Nonlinear Hysteresis Behavior of Precast/Prestressed Concrete Member

Research Project

Project/Area Number 08455247
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Building structures/materials
Research InstitutionThe University of Tokyo

Principal Investigator

SHIOHARA Hitoshi  The University of Tokyo, Graduate School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (50272365)

Co-Investigator(Kenkyū-buntansha) MATSUMORI Taizo  The University of Tokyo, Graduate School of Engineering, Research Associate, 大学院・工学系研究科, 助手 (10272361)
OTANI Shunsuke  The University of Tokyo, Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (30133101)
Project Period (FY) 1996 – 1998
KeywordsPrestressed Concrete / Hysteresis Behavior / Bond-Slip / Prestressing Steel / Moment-Rotation Relation / Beam-Column Connection
Research Abstract

Prestressed Concrete (PC) members subjected to cyclic bending and shear shows non-linear hysteresis behavior characterized with (1) S-shape loops with origin-oriented unloading branch, and (2) smaller capacity to dissipate hysteretic energy than ordianry reinforced concrete (RC) members. These characteristics seems to be influenced by many factors including amount of prestressing steel, shear force level and bond-slip of between concrete and prestressing steel. The objective of this study is to identify the reason of the characteristics by tests and analyses.
In the first year, six prestressing beam specimens were loaded to failure subjected to pure cyclic bending, parameter of which included bond-slip capacity of prestressing steel. In the next year, three 1/2.7 scale exterior beam column joint specimens were loaded to failure to investigate the effect of the slab and shear-to-span ratioin PC members. In the last year, two interior and two exterior beam column joint subassemblies with prestressing in beam were tested to investigate the effect of prestress on the strength and deformation of beam-column connections.
From those test results, it is revealed that the strength, stiffness and shape of hysteresis loop were significantly affected by the bond-slip characteristics of prestressing steel. Hence, non-linear cyclic flexural analysis with Bernouri's assumption was extended to be applicable to the PC members taking into account the effect of constitutive relation of bond-slipl. The reliability of the analytical method is examined using the test data.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 高 〓: "プレストレストコンクリートはりの曲げモーメント・曲率に関する実験" コンクリート工学年次論文報告集. 第19巻第2号. 69-74 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 伊藤 央: "プレストレスト鉄筋コンクリート造梁部材の繰り返し載荷実験" コンクリート工学年次論文報告集. 第19巻第2号. 1137-1142 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 杉本 訓祥: "プレストレスト鉄筋コンクリート造部材の履歴復元力特性" コンクリート工学年次論文報告集. 第19巻第2号. 1143-1148 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 伊藤 央: "PRC造ト型骨組みの復元力特性に及ぼすスラブおよびせん断スパンの影響" コンクリート工学年次論文報告集. 第20巻第3号. 751-756 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shi GAO,Hitoshi SHIOHARA and Shunsuke OTANI: "Test of Moment-Curvature of Prestressed Concrete Beams" Proceedings of the Japan Concrete Institute. Vol19, No.2, June. 69-74 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi ITOH,Kuniyoshi SUGIMOTO,Hitoshi SHIOHARA and Shunsuke OTANI: "An Experimental Study on Cyclic Loads of Prestressed Concrete Beams" Proceedings of the Japan Concrete Institute. Vol.19, No.2, June. 1137-1142 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kuniyoshi SUGIMOTO,Hiroshi ITOH,Hitoshi SHIOHARA and Shunsuke OTANI: "Characteristics of Prestressed Concrete Beams under Cyclic Loading" Proceedings of the Japan Concrete Institute. Vol.19, No.2, June. 1143-11428 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi ITOH,Tetsumi WATANAB,Hitoshi SHIOHARA and Shunsuke OTANI: "Effects of Slabs and Shear Span Ratio on Restoring Force Characteristics of Prestressed Reinforced Concrete" Proceedings of the Japan Concrete Institute. Vol.20, No.2, June. 751-756 (1998)

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

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Published: 1999-12-08  

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