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Experimental Studies on Creep Behavior of Continuous Composite Girders using Precast Concrete Slab

Research Project

Project/Area Number 60850090
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 土木構造
Research InstitutionOsaka City University, Faculty of Engineering

Principal Investigator

NAKAI Hiroshi  Professur, Osaka City University, Faculty of Engineering, 工学部, 教授 (00047052)

Co-Investigator(Kenkyū-buntansha) 竹中 裕文  (株)春本鐡工所, 設計部, 課長代理
KURITA Akimitsu  Assistant Professor, Osaka Institute of Technology, 工学部, 講師 (90121798)
WATRANABE Eiichi  Professor, Kyoto University, School of Engineering, 工学部, 教授 (30026174)
FUJII Manabu  Professor,Kyoto University, School of Engineering, 工学部, 教授 (30031074)
TAKENAKA Hirohumi  Chief Engineer,Harumoto Iron Works Company Ltd
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1987: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1986: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1985: ¥3,600,000 (Direct Cost: ¥3,600,000)
KeywordsPrecast concrete slab / Adustment of prestress force / Continuous composite girder / Creep / Relaxation / 粘弾性問題の解析 / 合成桁 / プレキャストコンクリート / プレストレス / プレキヤスト床版 / リラクゼーション
Research Abstract

A great number of studies have been reported on the composite girders with precast concrete slabs in the last 3 decades. Since the pioneering work by K. Sattler in 1960, the study has been extended by many references and an innovative work by K. Roik composing precast concrete slab with steel girders through high tension bolts. Furthermore,the use of precast concrete slabs in Japan is reported by some of research groups and this type of construction is becoming universally accepted, particulary in West Germany, Switzerlan, France and U.S.A. Most of the RC slabs of Japanese highway bridges are still being built by pouring concrete at the sites. However, cast-in-place concrete slabs are quite difficult to meet the prescribed quality requirement, to cut down human labor and the construction period. In addition, damages of the RC slabs of highway bridges have been considered to be one of the most serious problems and the rapid repairing and replacement of the damaged slabs are among the most important engineering problems.
Discussed in this study is the prediction of the creep behavior of a new type of steel girders composed with precast prestressed concrete slabs constructed with introduction of prestress force after the composition so referred to as the PPCS (Prestressed Precast Counste Slab) method.
To investgate the creep and relaxation behavior of a continuous composite girder, model girders were built by the PPCS method and loaded under various conditions during past two years. Thus obtained data were compared with the analytical results based upon the visco-elastie theory of composite girders and their properties were discussed from various points of views. Moreover, and approximate method for predicting the creep stress of a continuous composite girder by using equivalent Young'smodulus ratio of the concrete is also discussed together with the numerical examples.
Finally, it is directed that the remaining problems to be solved in the future.

Report

(3 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • 1985 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Manabu FUJII: Japan Concrete Institute. Seminar on Precast Concrete Constriuction in Seismic Zones. 2. 239-258 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 栗田 章光: 土木学会構造工学委員会,合成構造の活用に関する シンポジュウム 講演会論文集. 49-56 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 中井 博: 土木学会,構造工学論文集. 33A. 285-298 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Eiichi WATANABE: Engineering Foundation Conference, Composite Construction, New England College,Henniker, New Hampshire, U.S.A.(1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Eiichi WATANABE: Proc. of JSCE, Structural Engineering/ Earthquake Engineering. 392/I-9. (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 中井 博: "プレキャスト床版合成桁の設計・施工 -床版の急速資工と耐久性向上のために-" 森北出版(株), (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Manabu FUJII: "Studies on Composite Girder Bridges using Prestressed Concrete Slab" Seminar on Precast Concrete Construction in Seismic Zones, Japan Concrete Institute. 239-258 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Akimitsu KURITA: "Creep and Shrinkage Analysis of Steel and Concrete Composite Constructions by Matrix Method" Proceeding of Symposium on Research and Application of Composite Construction. JSCE. 49-56 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi NAKAI: "An Experimental Study on Time-Dependent Behaviors of Creep in Composite Girder by using Prestressed Precast Concrete Slabs" Jornal of Structural Engineering, JSCE. 275-284 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi NAKAI: "Creep and Relaxation of Precast Composite Girder" Jouranal of Structural Engineering, JSCE. 285-298 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Eiichi WATANABE: "Creep in Precast Composite Girder" Engineering Foundation Conference, Composite Construction. New England College, Henniker, Hew Hampshere, U.S.A.(1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi NAKAI: Morikita Shuppan Book Company Ltd.Design and Construction of Precast Concrete Composite Girders - for Rapid Construction and Improvement of Durabillity of Slab -, 240 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 中井博,藤井学,渡辺英一,竹中裕文: 昭和61年度土木学会関西支部年次学術講演会講演概要集. I-78-1-I-78-2 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 中井博,藤井学,渡辺英一,竹中裕文: 土木学会第41回年次学術講演会講演概要集第1部. 431-432 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 中井博,渡辺英一,林圭一,竹中裕文: 土木学会第41回年次学術講演会講演概要集第1部. 435-436 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 中井博,藤井学,渡辺英一,竹中裕文: 構造工学論文集,土木学会. 33A. 275-284 (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 中井博,渡辺英一,竹中裕文,林圭一: 構造工学論文集,土木学会. 33A. 285-298 (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 昭和61年度 土木学会年次学術講演会概要集. (1986)

    • Related Report
      1985 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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