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Evaluation on Applicability of Built-up Square Tubular Compression Members Fabricated with HSA800 High Performance Steel Considering Local Buckling

국부좌굴을 고려한 건축구조용 고성능강(HSA800) 조립각형강관 압축재의 적용성 평가

  • Received : 2013.02.01
  • Accepted : 2013.05.29
  • Published : 2013.06.27

Abstract

Recently, high-performance steels have been increasingly used for structural materials in buildings and bridges with the demand for high-rise and long-span of main structures. This paper offers a series of basic study for the design specification of structural members using high performance steel, that is material properties of HSA800 (High-performance rolled steel for building structures). Built-up square tube stub columns with variables of width-to-thickness ratios are planned as a parametric study in order to investigate the local buckling behaviors and check the current design limit of width-to-thickness ratio. In addition, the buckling behaviors of stub columns obtained finite element (FE) analysis were compared with those from experimental tests. The verified FE model was used for parametric study and checked applicability of high-strength steel on current design specification.

최근 구조물의 고층화, 대형화 및 장스팬 활용 등의 요구로 고강도 고성능 재료의 건축물과 교량에의 적용이 증가하는 추세이다. 본 논문은 고성능강(HSA800)의 건축구조용 재료 특성과 고성능강재를 사용한 부재의 설계 기준을 위한 기본적인 연구의 일부이다. 조립각형강관 기둥의 국부좌굴 거동과 현행 폭두께비 설계 제한치를 검토하기 위하여 다양한 폭두께비 변수를 계획하고, 단축압축실험을 실시하였다. 또한, 유한요소결과로 얻어낸 단주의 국부좌굴거동을 실험결과와 비교하였으며 검증된 해석모델을 이용하여 변수연구를 수행하였고 현행 설계기준의 적용성에 대해 검토하였다.

Keywords

References

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