Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Flexural Capacity Evaluation of Prestressed Steel-Concrete Composite Beams with Discontinuous Webse

불연속웨브가 도입된 프리스트레스트 강-콘크리트 합성보의 휨성능 평가

  • 오재열 (서울시립대학교 건축공학과) ;
  • 이득행 (서울시립대학교 건축공학과) ;
  • 김강수 (서울시립대학교 건축공학과) ;
  • 강현 (서울시립대학교 도시과학연구원) ;
  • 김흥열 (한국건설기술연구원 화재안전연구센터) ;
  • 김형준 (한국건설기술연구원 화재안전연구센터)
  • Published : 2013.01.25
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Abstract

A corrugated steel plate has very little axial stiffness in longitudinal direction due to the accordion effect resulted from its geometric characteristics. Based on this phenomenon, the corrugated webbed steel beams can be utilized for prestressed members to get greater prestressing efficiency on the top and bottom flanges of steel beams that are the main resistant elements against the bending moment. Also, the resistance to any unbalanced construction loading can be improved and the composite action between concrete and steel web can be significantly enhanced by the corrugated web. Due to this reason, researches on the corrugated webbed steel beams have been continued so far. Manufacturing the corrugated webs, however, may have considerable disadvantageous in workability and economical point of view. In this study, therefore, the prestressed composite beam with discontinuous webs has been developed to improve such shortcomings of the corrugated webbed steel beam system. In order to verify the structural performance of the developed prestressed steel-concrete composite beam, its prestressing efficiency has been compared to the steel beams with corrugated webs by finite element analysis, and two full-scaled specimens were also fabricated and tested to evaluate their structural behavior.

Keywords

References

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