Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Behavior of Steel Box Girder Bridge According to the Placing Sequences of Concrete Slab (I)

강합성 상자형 교량의 바닥판 타설에 따른 거동 연구(I) - 해석모델 및 현장실험 -

  • 곽효경 (한국과학기술원 토목공학과) ;
  • 서영재 (한국과학기술원 토목공학과) ;
  • 정찬묵 (우송산업대학교 토목공학과) ;
  • 박영하 (한국도로공사 도로연구소 콘크리트 구조연구실)
  • Received : 1999.11.18
  • Published : 2000.04.27
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Abstract

In this study, both experimental and analytical study for behavior of the existing composite steel box girder bridges, constructed along with the procedure of continuous placing slab, are conducted to establish the validity of the proposed model. The layer approach is adopted to determine the equilibrium condition in a section to consider the different material properties and concrete cracking across the sectional depth, and the beam element stiffness is constructed on the basis of the assumed displacement field formulation and the 3-points Gaussian Integration. In addition, the effects of creep and shrinkage of concrete for time-dependent behavior of the bridge are taken into consideration. Finally, both analytical and experimental results are compared.

이 연구에서는 강박스 거더 교량의 연속 바닥판 타설에 따른 거동규명을 위해 시공중인 교량에 대한 현장실험과 해석을 수행하였다. 해석 및 실험 결과는 교축을 따라 교량의 거동이 크게 변하는 몇몇 점들에서 단명의 상, 하부 플랜지의 변형률로 나타내었으며 이를 통해 제안된 해석모델의 적합성을 검토하였다. 해석적 연구를 위해 사용한 모델은 단면해석의 경우 적층단면을 사용하였으며 요소 강성은 변위법과 3점 가우스 수치적분을 사용하여 구성하였다. 끝으로 해석결과와 실험결과를 비교, 검토하였다.

Keywords

Acknowledgement

Grant : 합성형 교량의 설계, 시공 및 유지관리 기술개발연구

Supported by : 한국도로공사

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