Shrinkage and Creep Effects on Continuous Prestressed Concrete Girder Bridges

연속 프리스트레스트 콘크리트 거더교에서 건조수축과 크리프의 영향

  • 조선규 (서울산업대학교 토목공학과) ;
  • 윤석구 (서울산업대학교 토목공학과) ;
  • 이종민 (서울산업대학교 토목공학과) ;
  • 최연왕 (세명대학교 토목공학과) ;
  • 정지승 (동양대학교 토목환경공학과)
  • Published : 2004.11.01

Abstract

The Prestressed concrete girder bridges(PSC girder bridges), consisting of prestressed concrete girders and cast-in-place deck slabs, are sensitive to creep and shrinkage of concrete. Shrinkage and creep produce additional internal forces md deformations in PSC girder bridges. The long-term behavior of the PSC girder bridges depends on time-dependent properties of materials, amount of prestressing, methods and sequences of construction and age at loading. The purpose of this study is to predict the long-term behavior of PSC girder bridge. For this purpose, Computer program for Time-dependent analysis of PSC girder bridge has been developed. thereafter, Time-dependent analysis using developed computer program was carried out about 3-span continuous PSC girder bridges. Various construction timing sequences were used for parametric study.

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