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Unified Bond Model for Externally Bonded Reinforcement

Research Project

Project/Area Number 13450177
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 InstitutionHokkaido University

Principal Investigator

UEDA Tamon  Hokkaido Univ., Div. of Structural and Geotechnical Eng., Associate Professor, 大学院・工学研究科, 助教授 (00151796)

Co-Investigator(Kenkyū-buntansha) KONNO Katsuyuki  Hokkaido Institute of Technology, Dept. of Civil Engineering, Associate Professor, 工学部, 助教授 (80290667)
SATO Yasuhiko  Hokkaido Univ., Div. of Structural and Geotechnical Eng., Research Associate, 大学院・工学研究科, 助手 (60261327)
FURUUCHI Hitoshi  Hokkaido Univ., Div. of Structural and Geotechnical Eng., Research Associate, 大学院・工学研究科, 助手 (60165462)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥15,100,000 (Direct Cost: ¥15,100,000)
Fiscal Year 2003: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2002: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2001: ¥9,500,000 (Direct Cost: ¥9,500,000)
KeywordsExternal bonding / Shear bond model / Tensile bond model / Mixed-made debonding / Bond strength / Effective bond length / Punching out capacity / Interfacial fracture energy / 混合モード剥離 / 剥離破壊エネルギー / 鉄筋コンクリート / 連続繊維シート / 鋼板 / 付着 / 付着-すべり関係 / 剥離 / 接着樹脂
Research Abstract

This study presents a unified local bond stress-slip model for interface between concrete and externally bonded reinforcing material (shear bond model). The shear bond model was derived based on a reinforcing material stress-slip relationship at loaded end of pullout bond test, so that necessary measurement was simplified and the data scatter problem was minimized. The shear bond model needs only two material constants, interfacial fracture energy and interfacial ductility factor. The shear bond model was expanded to be bond stress-slip-reinforcing material strain model to express cases with a short bond length. Both original and expanded shear bond models consider effects of mechanical properties of reinforcing materials, adhesive materials and concrete substrate. Besides the shear band model, the prediction formula for interfacial fracture energy, effective bond length and bond strength for given anchorage length are presented. Reliability of the proposed unified shear bond model together with the proposed formula for interfacial fracture energy, effective bond length and bond strength for a given bond length is presented by comparing the calculated results with experimental results.
Tension bond model is examined experimentally and it is disclosed that the bond strength (or interfacial fracture energy) is not affected by stiffness of adhesive materials, which is different from the cases of shear bond model. A test method to represent a mixed mode for bond (shear and tension bond) is newly developed. Using this method, an interaction diagram of shear bond strength and tension bond strength is presented, which shows that the shear bond strength is reduced only by 10% even under tension bond stress equal to 90% of the tension bond strength. The theoretical method to calculate punching out capacity of reinforcing material externally bonded in orthogonal direction is also presented.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] DAI Jianguo, UEDA Tamon, SATO Yasuhiko: "Development of the Nonlinear Bond Stress-Slip Model of Fiber Reinforced Plastics Sheet-Concrete Interfaces with a Simple Method"Composites in Construction, ASCE. (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jianguo DAI, Tamon UEDA, Yasuhiko SATO: "Dowel Effects on Interface Shear Bond Force Transfer in Concrete Beams Strengthened with FRP Sheets"Proceedings of JCI. 26. (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jianguo DAI, Tamon UEDA, Muttaqin HASAN, Yasuhiko SATO: "Mode I Fracture Behavior of FRP-Concrete Interfaces"Proceedings of JCI. 25(1). 1577-1582 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jianguo DAI, Yasuhiko SATO, Tamon UEDA: "Improving the Load Transfer and Effective Bond Length for FRP Composite Bonded to Concrete"Proceedings of JCI. 24(2). 1423-1428 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jianguo DAI, Tamon UEDA, Yasuhiko SATO, Hadiyono JAQIN: "Dowel resistances of bond interfaces between FRP sheets and concrete Design"Proceedings of 2^<nd> International Conference on FRP Composites in Civil Engineering (CICE2004). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] DAI Jianguo, UEDA Tamon, SATO Yasuhika: "Development of the Nonlinear Bond Stress-Slip Model of Fiber Reinforced Plastics Sheet-Concrete Interfaces with a Simple Method"Composites in Construction, ASCE. (to be printed). (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jianguo DAI, Tamon UEDA, Yasuhiko SATO: "Dowel Effects on Interface Shear Bond Force Transfer in Concrete Beams Strengthened with FRP Sheet"Proceedings of JCI. (to be printed). (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jianguo DAI, Tamon UEDA, Muttaqin HASAN, Yasuhiko SATO: "Mode I Fracture Behavior of FRP-Concrete Interfaces"Proceedings of JCI. Vol.25,No.1. 1577-1582 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jianguo DAI, Yasuhiko SATO, Tamon UEDA: "Improving the Load Transfer and Effective Bond Length for FRP Composite Bonded to Concrete"Proceedings of JCI. Vol.24,No.2. 1423-1428 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jianguo DAI, Tamon UEDA, Yasuhiko SATO, Hadiyono JAQIN: "Dowel resistances of bond interfaces between FRP sheets and concrete"Proceedings of 2^<nd> International Conference on FRP Composites in Civil Engineering (CICE2004). (to be printed). (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] DAI Jianguo, UEDA Tamon, SATO Yasuhiko: "Development of the Nonlinear Bond Stress-Slip Model of Fiber Reinforced Plastics Sheet-Concrete Interfaces with a Simple Method"Journal of Composites for Construction, ASCE. (掲載予定). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] DAI Jianguo, UEDA Tamon, SATO Yasuhiko: "Dowel Effects on Interface Shear Bond Force Transfer In FRP Sheet Flexurally Strengthened Concrete Beams"Proceedings of Japan Concrete Institute. Vo1.26(掲載予定). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Jianguo Dai, Tamon Ueda, Hiroki Ozaki, Yasuhiko Sato: "Experimental Study on the Mix-Mode Fracture of FRP Sheet-Concrete Interfaces"Proceedings of the International Symposium on Latest Achievement of Technology and Research on Retrofitting Concrete Structures, JCI. 121-128 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tamon Ueda, Jianguo Dai, Yasuhiko Sato: "A Nonlinear Bond Stress-Slip Relationship for FRP Sheet-Concrete Interface"Proceedings of the International Symposium on Latest Achievement of Technology and Research on Retrofitting Concrete Structures, JCI. 113-120 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Jianguo DAI: "Improving the Load Transfer and Effective Bond Length for FRP Composite Bonded to Concrete"Proceedings of Japan Concrete Institute. Vol24, No.2. 1423-1428 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tamon Ueda: "New Approach for Usage of Continuous Fiber as Non-Metallic Reinforcement of Concrete"Structural Engineering International, IABSE. Vol12, No.2. 111-116 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 尾崎 宏喜: "RC梁に接着した曲げ補強シートの必要接着長に関する実験的研究"土木学会北海道支部平成14年度論文報告集. 第59号. 756-759 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.G.DAI: "LOCAL BOND STRESS SLIP RELATIONS FOR FRP SHEETS-CONCRETE INTERFACES"Proceedings of FRPRCS-6. (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Jianguo DAI: "MODE I FRACTURE BEHAVIORS OF FRP-CONCRETE INTERFACES"Proceedings of Japan Concrete Institute. Vol24, No.2. (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] DAI Jianguo: "Experimental Study on Effects of Resins on Bond Force Transfer of Carbon Fiber Sheet-Concrete Interface"Proceedings of 7^<th> Japan International SAMPE Symposium & Exhibition. 395-398 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] UEDA Tamon: "Bond Behavior and Seismic Retrofitting Effect of Polyacetal Fiber Sheet"Proceedings of the International Conference on FRP Composites in Civil engineering. Vol.2. 1041-1050 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 御厨 一慶: "ポリアセタール繊維シートの付着性状に関する基礎研究"性能照査型システムにおけるコンクリート構造物の補強 第II部 シンポジウム論文集,コンクリート技術シリーズ,土木学会. No.42. II-51-II-58 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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