DOI QR코드

DOI QR Code

Novel pin jointed moment connection for cold-formed steel trusses

  • Mathison, Chris (Holmes Consulting LP) ;
  • Roy, Krishanu (Department of Civil and Environmental Engineering, The University of Auckland) ;
  • Clifton, G. Charles (Department of Civil and Environmental Engineering, The University of Auckland) ;
  • Ahmadi, Amin (Department of Civil and Environmental Engineering, The University of Auckland) ;
  • Masood, Rehan (Department of Civil and Environmental Engineering, The University of Auckland) ;
  • Lim, James B.P. (Department of Civil and Environmental Engineering, The University of Auckland)
  • 투고 : 2018.12.18
  • 심사 : 2019.04.24
  • 발행 : 2019.06.10

초록

Portal frame structures, made up of cold-formed steel trusses, are increasingly being used for lightweight building construction. A novel pin-jointed moment connector, called the Howick Rivet Connector (HRC), was developed and tested previously in T-joints and truss assemblage to determine its reliable strength, stiffness and moment resisting capacity. This paper presents an experimental study on the HRC, in moment resisting cold-formed steel trusses. The connection method is devised where intersecting truss members are confined by a gusset connected by HRCs to create a rigid moment connection. In total, three large scale experiments were conducted to determine the elastic capacity and cyclic behaviour of the gusseted truss moment connection comprising HRC connectors. Theoretical failure loads were also calculated and compared against the experimental failure loads. Results show that the HRCs work effectively at carrying high shear loads between the members of the truss, enabling rigid behaviour to be developed and giving elastic behaviour without tilting up to a defined yield point. An extended gusset connection has been proposed to maximize the moment carrying capacity in a truss knee connection using the HRCs, in which they are aligned around the perimeter of the gusset to maximize the moment capacity and to increase the stability of the truss knee joint.

키워드

과제정보

연구 과제 주관 기관 : Howick Ltd.

참고문헌

  1. Ahmadi, A., Mathieson, C., Clifton, G.C., Das, R. and Lim, J.B.P. (2016), "An experimental study on a novel cold-formed steel connection for light gauge open channel steel trusses", J. Constr. Steel Res., 122, 70-79. https://doi.org/10.1016/j.jcsr.2016.02.007
  2. American Iron and Steel Institute (2012), North American specification for the design of cold-formed Steel Structural Members; NAS S100.
  3. Australia/New Zealand Standard (AS/NZS) (2005), Cold-Formed Steel Structures, AS/NZS 4600:2005; Standards Australia/Standards New Zealand.
  4. Australia/New Zealand Standard (AS/NZS) (2002), Structural Design Actions, AS/NZS 1170:2002; Standards Australia/Standards New Zealand.
  5. Beena, K., Naveen, K. and Shruti, S. (2017), "Behaviour of bolted connections in concrete-filled steel tubular beam-column joints", Steel Compos. Struct., Int. J., 25(4), 443-456. http://dx.doi.org/10.12989/scs.2017.25.4.443
  6. Darcy, G. and Mahendran, M. (2008), "Development of a new cold-formed steel building system", Adv. Struct. Eng., 11(6), 661-677. https://doi.org/10.1260/136943308787543621
  7. Dundu, M. (2011), "Design approach of cold-formed steel portal frames", Int. J. Steel Struct., 11(3), 259-273. https://doi.org/10.1007/s13296-011-3002-2
  8. Kaitila, O., Kesti, J. and Makelainent, P. (2001), "The behaviour of a new type of connection system for light-weight steel structures applied to roof trusses", Steel Compos. Struct., Int. J., 1(1), 17-32. http://dx.doi.org/10.12989/scs.2001.1.1.017
  9. Li, D., Uy, B., Patel, V. and Aslani, F. (2017), "Analysis and design of demountable embedded steel column base connections", Steel Compos. Struct., Int. J., 23(3), 303-315. http://dx.doi.org/10.12989/scs.2017.23.3.303
  10. Lim, J.B.P. and Nethercot, D.A. (2004), "Finite element idealization of a cold-formed steel portal frame", J. Struct. Eng., 130(1), 78-94. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:1(78)
  11. Mathieson, C., Clifton, G.C. and Lim, J.B.P. (2016), "Novel pinjointed connection for cold-formed steel trusses", J. Constr. Steel Res., 116, 173-182. https://doi.org/10.1016/j.jcsr.2015.08.009
  12. Mills, J.E. (2000), "Knee joints in cold-formed channel portal frames", (R.A. Laboube and W.W. Yu Eds.), In: Recent Research and Developments in Cold-Formed Steel Design and Construction, pp. 577-592.
  13. Mills, J.E. (2012), "Knee joints in cold-formed channel portal frames: problems and pitfalls", Austral. J. Struct. Eng., 13(2), 191-202.
  14. Mills, J.E. and Laboube, R. (2004), "Self-drilling screw joints for cold-formed channel portal frames", J. Struct. Eng., 130(11), 1799-1806. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:11(1799)
  15. Nunez, E., Torres, R. and Herrera, R. (2017), "Seismic performance of moment connections in steel moment frames with HSS columns", Steel Compos. Struct., Int. J., 25(3), 271-286. http://dx.doi.org/10.12989/scs.2017.25.3.271
  16. Roy, K., Ting, T.C.H., Lau, H.H. and Lim, J.B.P. (2018a), "Nonlinear behaviour of back-to-back gapped built-up coldformed steel channel sections under compression", J. Constr. Steel Res., 147, 257-276. https://doi.org/10.1016/j.jcsr.2018.04.007
  17. Roy, K., Ting, T.C.H., Lau, H.H. and Lim, J.B.P. (2018b), "Nonlinear behavior of axially loaded back-to-back built-up cold-formed steel un-lipped channel sections", Steel Compos. Struct., Int. J., 28(2), 233-250. http://dx.doi.org/10.12989/scs.2018.28.2.233
  18. Roy, K., Ting, T.C.H., Lau, H.H. and Lim, J.B.P. (2018c), "Effect of thickness on the behaviour of axially loaded back-to-back cold-formed steel built-up channel sections - Experimental and numerical investigation", Structures, 16, 327-346. https://doi.org/10.1016/j.istruc.2018.09.009
  19. Roy, K., Mohammadjani, C. and Lim, J.B.P. (2019), "Experimental and numerical investigation into the behaviour of face-to-face built-up cold-formed steel channel sections under compression", Thin-Wall. Struct., 134, 291-309. https://doi.org/10.1016/j.tws.2018.09.045
  20. Teh, L.H. and Yazici, V. (2013), "Shear lag and eccentricity effects of bolted connections in cold-formed steel sections", Eng. Struct., 52, 536-544. https://doi.org/10.1016/j.engstruct.2013.03.024
  21. Ting, T.C.H., Roy, K., Lau, H.H. and Lim, J.B.P. (2018), "Effect of screw spacing on behavior of axially loaded back-to-back coldformed steel built-up channel sections", Adv. Struct. Eng., 21(3), 474-487. https://doi.org/10.1260/1369-4332.15.9.1623
  22. Wrzesien, A., Lim, J.B.P. and Nethercot, D. (2012), "Optimum joint detail for a general cold-formed steel portal frame", Adv. Struct. Eng., 15(9), 1623-1640. https://doi.org/10.1260/1369-4332.15.9.1623