Steel and Composite Structures

  • 제2권6호
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  • Pages.411-428
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  • 2002
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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F. E.-assisted design of the eaves bracket of a cold-formed steel portal frame

  • Lim, J.B.P. (The Steel Construction Institute) ;
  • Nethercot, D.A. (I.C.S.T.M.)
  • 투고 : 2002.07.01
  • 심사 : 2002.09.01
  • 발행 : 2002.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Non-linear large-displacement elasto-plastic finite element analyses are used to propose design recommendations for the eaves bracket of a cold-formed steel portal frame. Owing to the thinness of the sheet steel used for the brackets, such a structural design problem is not trivial as the brackets need to be designed against failure through buckling; without availability of the finite element method, expensive laboratory testing would therefore be required. In this paper, the finite element method is firstly used to predict the plastic moment capacity of the eaves bracket. Parametric studies are then used to propose design recommendations for the eaves bracket against two potential buckling modes of failure: (1) buckling of the stiffened free-edge into one-half sine wave, (2) local plate buckling of the exposed triangular bracket area.The results of full-scale laboratory tests on selected geometries of eaves bracket demonstrate that the proposed design recommendations are conservative. The use of the finite element method in this way exploits modern computational techniques for an otherwise difficult structural design problem.

키워드

참고문헌

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피인용 문헌

  1. Optimum Joint Detail for a General Cold-Formed Steel Portal Frame vol.15, pp.9, 2012, https://doi.org/10.1260/1369-4332.15.9.1623
  2. Research on cold-formed steel connections: A state-of-the-art review vol.20, pp.1, 2016, https://doi.org/10.12989/scs.2016.20.1.021
  3. Ultimate strength of bolted moment-connections between cold-formed steel members vol.41, pp.11, 2003, https://doi.org/10.1016/S0263-8231(03)00045-4
  4. Experimental and numerical study on a full scale apex connection of cold-formed steel portal frames vol.94, 2015, https://doi.org/10.1016/j.tws.2015.04.004
  5. Finite Element Idealization of a Cold-Formed Steel Portal Frame vol.130, pp.1, 2004, https://doi.org/10.1061/(ASCE)0733-9445(2004)130:1(78)
  6. Effects of elevated temperatures on bolted moment-connections between cold-formed steel members vol.29, pp.10, 2007, https://doi.org/10.1016/j.engstruct.2006.11.027
  7. Design of Top-hat Purlins for Cold-formed Steel Portal Frames vol.7, 2016, https://doi.org/10.1016/j.istruc.2016.06.006