Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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A Study on the Structural Behavior of Profiled Composite Beams

박판 냉간성형강 합성보의 구조적 거동에 관한 연구

  • 양구록 (영남대학교 토목공학과) ;
  • 황영서 (영남대학교 토목공학과) ;
  • 송준엽 (영남대학교 토목공학과) ;
  • 권영봉 (영남대학교 토목공학과)
  • Received : 1998.11.10
  • Published : 1999.04.27
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Abstract

An analytical study on the behavior of composite beams, which are composed of cold-formed profiled steel sheeting and normal strength concrete, is described. An analytical method to trace the nonlinear behavior of a composite beam is developed to include the nonlinear material properties of steel sheeting, reinforcing steel bar and concrete. A simple Power Model has also been proposed for the nonlinear moment-curvature relation of the composite beam. The model, which has been originally used to predict the flexural capacity of the beam to column connections, is adapted to the composite beams. The load-deflection behavior of the beams has been simulated by the step-by-step numerical integration using the moment-curvature relation obtained by the Power Model. The results have been compared with test results.

본 논문에서는 냉간성형 profiled steel sheeting과 보통강도의 콘크리트로 이루어진 합성보의 휨거동에 관한 연구를 통하여 새로운 형식의 보부재의 사용가능성을 검토하였다. 합성보의 비선형거동을 추적하기 위하여 profiled steel sheeting, 철근 및 콘크리트의 재료비선형을 포함할 수 있는 해석적 방법을 개발하였으며, 합성보의 비선형 모멘트-곡률 관계를 나타낼 수 있는 Power Model식을 제시하였다. Power Model은 원래 보-기둥 접합부의 모멘트-회전각과의 관계를 예측하기 위해 제안된 것이나 합성보에 맞게 수정하였다. 합성보의 하중-처짐 거동은 Power Model에 의한 모멘트-곡률 관계를 이용하여 변위조절법인 단계별 수치적분법을 적용하여 계산하였으며, 실험결과와 비교하였다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

References

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