Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Eccentric Axial Loading Test for Concrete-Encased L-section Columns using 800MPa Steel and 100MPa Concrete

800MPa 강재 및 100MPa 콘크리트를 적용한 ㄱ형 강재 매입형 합성기둥의 편심압축실험

  • Kim, Chang-Su (Samsung C & T Corporation, Engineering & Construction Group) ;
  • Park, Hong Gun (Seoul National Univ., Dept. of Architecture and Architectural Engineering) ;
  • Lee, Ho Jun (Seoul National Univ., Dept. of Architecture and Architectural Engineering) ;
  • Choi, In Rak (Research Institute of Industrial Science & Technology, Steel Structure Research Div.)
  • 김창수 (삼성물산 건설부문, 기술연구센터) ;
  • 박홍근 (서울대학교, 건축학과) ;
  • 이호준 (서울대학교, 건축학과) ;
  • 최인락 (포항산업과학연구원, 강구조연구소)
  • Received : 2012.11.12
  • Accepted : 2013.03.25
  • Published : 2013.04.27
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Abstract

Eccentric axial loading test was performed for concrete-encased columns using 800MPa steel and 100MPa concrete. To maximize the contribution of the high-strength steel, L-shaped steel sections were placed at four corners, and connected to each other by lattices, links, or battens. Compared to a H-section of the same area, the moment-arm and strain of the L-sections are increased. Also, the corner L-sections provide good lateral confinement to concrete core. The test results showed that the peak strength and effective flexural stiffness of the L-section columns were increased by more than 1.4 times those of the H-section column.

800MPa급 강재와 100MPa급 콘크리트를 적용한 매입형 합성기둥에 대하여 편심압축실험을 수행하였다. 강재단면의 모멘트팔길이와 변형(응력)을 증가시켜 고강도강재의 성능활용을 극대화할 수 있도록, ㄱ형 강재단면을 네 모서리에 집중 배치한 후, 래티스철근, 링크철근, 띠판을 이용하여 일체화하였다. 이 경우 강재단면의 강력한 횡구속효과로 인해 심부콘크리트의 성능도 개선된다. 실험결과 ㄱ형 강재 매입형 기둥은 H형 강재 매입형 기둥에 비하여 최대강도와 유효휨강성이 1.4배 이상 증가하였다.

Keywords

References

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