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Design of Expansion Segment of Precast Prestressed Concrete Segmental Box Girder bridges Using Strut and Tie Model

  • 오병환 (서울대학교 토목공학과) ;
  • 이형준 (서울대학교 토목공학과) ;
  • 김익현 (서울대학교 토목공학과 대학 원) ;
  • 한승환 (서울대학교 토목공학과 대학원)
  • 발행 : 1995.04.01

초록

In recent years, precast prestressed concrete segmental box girder bridges have been increasingly constructed Expansion disphragm segment of this type bridge transfers forces from the superstructure onto bearing or column, and plays an important roll of anchorage zone for longitudinal prestressed forces. Non-linear stresses occur inside of diaphragms by these extensive concentrated forces. In this study, the strut-and-tie models are proposed to design an expansion segment rationally. A formula to determine the effective transverse prestressed forces is proposed on the basis of these models. The present study is expected to provide an effective tool to design expansion segment of prestressed concrete bridges rationally.

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