상부플랜지를 감소시킨 합성보의 휨내력에 관한 실험적 연구

An Experimental Study on Flexural Strength of Composite Beam with Reduced Top Flange of Steel

  • 문찬일 (건국대학교 건축공학과) ;
  • 정재훈 (건국대학교 건축공학과) ;
  • 김진무 (예우건축 구조연구소) ;
  • 주경재 (건국대학교 건축공학과)
  • 투고 : 2000.05.15
  • 발행 : 2000.07.31

초록

In simply supported composite beams, the neutral axis of the composite cross section usually is located the top flange of the steel I-shape, so that the top flange does not impart much strength to the member. This suggests that omitting the top flange entirely could be a means to lower the cost of the beam without greatly reducing the strength. The purpose of this investigation is to research flexural strength and behavior of the composite beams with reduced top flange of steel. Five specimens with H and inverted T steel section were tested. As the test results, comparison of the experimental to computed full-plastic moment, and variations of flexural strength with reduced top flange were analyzed.

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