Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Evaluation of Flexural Strength of Hybrid Girder composed of HSB800 and HSB600 Steel

HSB800 및 HSB600 강재를 적용한 하이브리드거더의 휨강도 평가

  • Park, Yong Myung (Department of Civil Engineering, Pusan National University) ;
  • Kang, Ji Hoon (Department of Civil Engineering, Pusan National University) ;
  • Lee, Kun Joon (Department of Civil Engineering, Pusan National University) ;
  • Kim, Hee Soon (Department of Civil Engineering, Pusan National University)
  • Received : 2014.07.14
  • Accepted : 2014.10.29
  • Published : 2014.12.27
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Abstract

In this paper, flexural resistance of hybrid girder under uniform bending moment was evaluated, which is composed of HSB800 and HSB600 steel for the flange and web, respectively. Doubly-symmetric and monosymmetric sections with noncompact or compact flange and slender, noncompact or compact web were considered. Nonlinear analyses with 3-dim. shell element model were performed to determine the 'flexural resistance of section' and the 'lateral torsional buckling strength' by taking initial imperfection and residual stress into account. The numerical results were compared with the AASHTO LRFD and Eurocode 3 specifications and also the applicability of AASHTO LRFD appendix A6 was examined for the sections with noncompact and compact web.

HSB800과 HSB600 강재를 플랜지와 웨브에 적용하고 균일휨모멘트를 받는 하이브리드거더의 휨강도 평가를 위한 연구를 수행하였다. 비조밀 및 조밀플랜지와 세장, 비조밀 및 조밀 웨브를 갖는 이축 및 일축대칭 단면들을 대상으로 하였으며, 3차원 쉘요소 모델에 초기처짐과 잔류응력의 영향을 고려하여 '단면 휨강도' 및 '횡비틀림좌굴 강도'를 비선형해석으로부터 평가하였다. 수치해석 결과는 AASHTO LRFD 및 Eurocode 3 기준과 비교하였으며, 비조밀 및 조밀 웨브를 갖는 단면에 대해서는 AASHTO LRFD 부록 A6 기준의 적용성을 분석하였다.

Keywords

References

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