Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Study on the Ultimate Strength of Gusset Plate-Circular Hollow Section(CHS) Joint

거셋플레이트-원형강관 접합부의 극한내력 도출에 관한 연구

  • 김우범 (공주대학교 건축공학과) ;
  • 신경재 (경북대학교 건축.토목공학부) ;
  • 최형화 (공주대학교 건축공학과)
  • Received : 2011.01.31
  • Accepted : 2011.10.05
  • Published : 2011.10.27
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Abstract

The demand for the circular hollow section (CHS) has been increasing due to its structural advantage in long-span structures and high-rise buildings. There are not enough researches on the CHS structure, though. The behavior of the gusset plate CHS joint, to predict the ultimate strength, is not easy to predict because the load deflection curve does not show consistency. Therefore, in this study, experiments and finite element analysis (FEA) were carried out to determine the ultimate strength according to the proposed ultimate deformation limit. Finally, a reasonable ultimate strength formula was proposed through comparisons with other design guides.

최근에 구조물의 대형화와 단면성능의 구조적 장점 때문에 원형강관의 사용이 증가하고 있다. 그러나 원형강관의 사용이 증가함에도 불구하고 국내에서는 이에 대한 연구가 매우 미흡한 실정이다. 원형강관-거셋플레이트 접합부의 극한강도의 판단은 매우 복잡한 국부변형과, 실험 및 유한요소해석 결과의 하중변위곡선 상에서 최대강도가 일관성 있게 나타나지 않기 때문에 간단하지가 않다. 따라서 본 연구에서는 실험과 유한요소해석을 바탕으로 극한변형에 의한 극한내력을 도출하고 기존 접합부 내력식과 비교하여 거셋플레이트-원형강관 접합부에 적합한 내력식을 제안하고자 한다.

Keywords

References

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