Structural Engineering and Mechanics

  • 제49권2호
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  • Pages.147-161
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  • 2014
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical study on the moment capacity of zed-section purlins under uplift loading

  • Zhu, Jue (Faculty of Mechanical Engineering and Mechanics, Ningbo University) ;
  • Chen, Jian-Kang (Faculty of Mechanical Engineering and Mechanics, Ningbo University) ;
  • Ren, Chong (School of Civil Engineering, University of Birmingham)
  • 투고 : 2013.05.22
  • 심사 : 2013.08.16
  • 발행 : 2014.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper a nonlinear finite element analysis model is established for cold-formed steel zed-section purlins subjected to uplift loading. In the model, the lateral and rotational restraints provided by the sheeting to the purlin are simplified as a lateral rigid restraint imposed at the upper flange-web junction and a rotational spring restraint applied at the mid of the upper flange where the sheeting is fixed. The analyses are performed by considering both geometrical and material nonlinearities. The influences of the rotational spring stiffness and initial geometrical imperfections on the uplift loading capacity of the purlin are investigated numerically. It is found that the rotational spring stiffness has significant influence on the purlin performance. However, the influence of the initial geometric imperfections on the purlin performance is found only in purlins of medium or long length with no or low rotational spring stiffness.

키워드

참고문헌

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피인용 문헌

  1. Dynamic instability of channel-section beams under periodic loading pp.1537-6532, 2018, https://doi.org/10.1080/15376494.2018.1501521
  2. Dynamic characteristics and wind-induced vibration coefficients of purlin-sheet roofs vol.22, pp.5, 2016, https://doi.org/10.12989/scs.2016.22.5.1039
  3. Bending-Induced Cross-Sectional Deformation of Cold-Formed Steel Channel-Section Beams vol.2021, pp.None, 2014, https://doi.org/10.1155/2021/8897756
  4. Lateral-torsional deformations of single-span and two-span thin-walled beams with continuous bracing vol.179, pp.None, 2014, https://doi.org/10.1016/j.jcsr.2021.106534