A Study on the Behavior of Prestressed Concrete Box Girder Bridges According to material Properties

재료특성치의 변화로 인한 프리스트레스트 콘크리트 박스거더 교량의 거동분석

  • 오병환 (정회원, 서울대학교 토목공학과) ;
  • 양인환 (정회원, 서울대학교 토목공학과 대학원) ;
  • 김의성 (정회원, 서울대학교 토목공학과 대학원) ;
  • 최인혁 (정회원, 동부건설기술연구소) ;
  • 김세훈 (정회원, 서울대학교 토목공학과 대학원)
  • Published : 1997.10.01

Abstract

Recently, the prestressed concrete box girder bridges are increasingly built at various locations in the world. The mechanical and structural behavior of prestressed concrete brides varies because of time-dependent material properties and sequential change of structural system due to stepwise construction. The time-dependent behavior of concrete is of importance in the design and construction of segmentally constructed and cast-in-place prestressed concrete box girder bridges. The structural response is affected b variations in creep, shrinkage properties of concrete. In this study, the example of time-dependent deformations is extended to establish how the variability in concrete properties affects the accuracy of the calculated deformations in such a bridge, and finally the results are discussed.

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