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Development of Ductile Segmental External Prestressed Concrete and Its Design Method

Research Project

Project/Area Number 07555435
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

MUTSUYOSHI Hiroshi  Saitama University, Faculty of Engineering, Proffesor, 工学部, 教授 (60134334)

Co-Investigator(Kenkyū-buntansha) UMEHARA Hidetaka  Nagoya Institute of Technology, Faculty of Eng.Proffesor, 工学部, 教授 (70151933)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1996: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsPRESTRESSED CONCRETE / EXTERNAL PRESTRESSING / SEGMENTAL PC / DUCTILITY / 外ケーブルPC / プレキャストセグメント / プレストレスコンクリート
Research Abstract

The application of precast segmental structures with external prestressing is getting popular due to economical and time saving construction. However, since segmental externally prestressed concrete (SEPC) member shows brittle failure at the ultimate state, it has hardly been constructed in earthquake areas. When such a structure is applied to elevated bridge structures whose girders are fixed on top of the reinforced concrete bent and subjected to big earthquakes, some extent of ductility or deformation capacity of the girder will be required.
In this study, the ductility improvement of SEPC beams has been developed, and analytical method to predict the load-deformation and design method for SEPC structures have also been established. An experimental investigation was conducted on a series of monolithic and precast segmental simply supported beams. The test variables were ; a) type of joint condition (dry or epoxy), b) provision of confinement reinforcements, c) method of prestressing (external or external together with internal bonded) and d) number of deviators (two or three). An analytical program that consists of an intensive iterative technique has been developed to predict the flexural behavior of the beams considering the material and structural non-linearities. The ultimate behavior of beams with dry or epoxy joints was nearly the same. There was a remarkable increase in the ultimate deflection for the beams with confinements. The experimental results were compared with the analytical predictions from the elastic range to the ultimate state. There was good agreement between them. From the above results it is concluded that the ductility could be improved by provision of confinements in precast SEPC beams and such structures can be erected in seismic areas. From many analytical results, design equations for flexural strength were proposed.

Report

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

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 山口統央・睦好宏史 他: "プレキャストブロックと外ケーブルを用いたPC単純桁及び連続梁の曲げ性状" コンクリート工学年次論文報告集. 17-2. 749-754 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Matupayont.S,Mutsuyoshi,H.他: "Flexural Analysis of Two-Span Continuous Prestressed Concrete Beam with External Tendons" Proceedings of JCI. 17・2. 755-760 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Aravinthan,T.,Mutsuyoshi,H.他: "Moment Redistribution in Prestressed Concrete Continuous Beams with External Tendons" Transactions of the Japan Concrete Institute. 17. 197-202 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Mutsuyoshi,H.,Tsuchida K.他: "Flexural Behavior and Proposal of Design Equation for Flexural Strength of Externally Prestressed Concrete Members" CONCRETE LIBRARY OF JSCE. 28・12. 65-77 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 睦好宏史・山口統央 他: "プレキャストセグメントを用いた外ケーブル式PCはりの曲げ性状および靱性改善に関する研究" 土木学会論文集. 544.V-32. 155-165 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 谷口裕史・睦好宏史 他: "ロープ系連続繊維補強材を外ケーブル緊張材に用いたPC部材の曲げ性状に関する研究" 土木学会論文集. 544.V-32. 167-175 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Aravinthan,T.,Mutsuyoshi,H.他: "Flexural Behavior of Twospan Continuous Segmental PC Beams with External Tendons" Proceedings of JCI. 18・2. 1121-1126 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 藤岡篤史・Aravinthan,T.睦好宏史 他: "プレキャストセグメントを用いた2スパーン連続外ケーブルPC梁に関する研究" プレストレスコンクリート技術協会第6回シンポジウム論文集. 303-308 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yamaguchi, T., Mutsuyoshi, H., Koseki, K.and Tokuyama, S.: "Flexural Behavior of Segmental PC single and Two-span beams with external Prestressing" Proceedings of JCI. Vol.17, No.2. 749-754 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Matupayont, S., Mutsuyoshi, H., Yamaguchi, T.And Machida, A.: "Flexural Analysis of Two-Span Continuous Prestressed Concrete Beam with External Tendons" Proceedings of JCI. Vol.17, No.2. 755-760 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Matupayont, S., Mutsuyoshi, H., Yamaguchi, T.And Machida, A.: "Flexural Analysis of Two-Span Continuous Prestressed Concrete Beam with External Tendons" Transactions of the Japan Concrete Institute. Vol.17. 197-2027 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Mutsuyoshi, H., Tsuchida, K., Matupayont, S.And Machida, S.: "Flexural Behavior and Proposal of Design Equation for Flexural Strength of Externally Prestressed Concrete Members" CONCRETE LIBRARY OF JSCE. NO.28. 65-77 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Mutsuyoshi, H., Yamaguchi, T., Matupayont, S.and Tokuyama, S.: "Flexural Behavior and Improvement of Ductility of Precast Segmental PC Beams with External Tendons" Journal of Materials, Concrete, Structures and Pavements, JSCE. No.544/V-32. 155-166 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Taniguchi, H., Mutsuyoshi, H.Kita, T.And Machida, A.: "Bending Characteristics of PC Members Using Aramid Rope as External Cables" Journal of Materials, Concrete, Structures and Pavements, JSCE. No.544/V-32. 167-176 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Aravinthan, T., Mutsuyoshi, H., Fujioka, A.and Hishiki, Y.: "Flexural Behavior of Two Span Continuous Segmental PC Beams with External Tendons" Proceedings of JCI. Vol.18, No.2. 1121-1126 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Fujioka, A., Aravinthan, T., Mutsuyoshi, H., and Arai, T.: "Two Span Continuous Segmental PC Beams with External Tendons" Proceedings of the 6th Symposium on Developments in Prestressed Concrete. 303-308 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 睦好宏史他3名: "プレキャストセグメントを用いた外ケーブル式PCはりの曲げ性状および靱性改善に関する研究" 土木学会 論文集. NO.515/V-32. (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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