The Behavior of Prestressed Composite Box Girder

프리스트레스트 합성상자형교의 거동 특성

  • 김주형 (도화종합기술공사) ;
  • 한택희 (고려대학교 토목환경공학과) ;
  • 김종헌 (고려대학교 토목환경공학과) ;
  • 강영종 (고려대학교 토목환경공학과)
  • Published : 2001.11.01

Abstract

In case of continuous steel box-girder bridges, the magnitude of the longitudinal tensile stress on concrete in internal support is larger than the tensile strength of concrete. In this paper, the parametric study was performed to present the effective magnitude of the longitudinal prestress for reducing the longitudinal tensile stress to decrease under the tensile strength of concrete. The parametric study is conducted with changing the steel box-girder section and the span length of bridge. Three dimensional finite element analyses are conducted with ABAQUS program. The behavior of the steel box-girder bridge with prestress is investigated through experimental works on a analogous steel box-girder bridge model, and their results are compared with those of analytical studies.

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