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Structural performance of cold-formed steel composite beams

  • Dar, M. Adil (Department of Civil Engineering, Indian Institute of Technology Delhi) ;
  • Subramanian, N. ;
  • Anbarasu, M. (Department of Civil Engineering, Government College of Engineering Salem) ;
  • Dar, A.R. (Department of Civil Engineering, National Institute of Technology Srinagar) ;
  • Lim, James B.P. (Department of Civil & Environmental Engineering, University of Auckland)
  • 투고 : 2017.04.13
  • 심사 : 2018.04.23
  • 발행 : 2018.06.10

초록

This study presents a novel method of improving the strength and stiffness of cold-formed steel (CFS) beams. Flexural members are primary members in most of the structures. Hence, there is an urgent need in the CFS industry to look beyond the conventional CFS beam sections and develop novel techniques to address the severe local buckling problems that exist in CFS flexural members. The primary objective of this study was to develop new CFS composite beam sections with improved structural performance and economy. This paper presents an experimental study conducted on different CFS composite beams with simply supported end conditions under four point loading. Material properties and geometric imperfections of the models were measured. The test strengths of the models are compared with the design strengths predicted by using Australian/New Zealand Standard for cold-formed steel structures. Furthermore, to ensure high precision testing, a special testing rig was also developed for testing of long span beams. The description of test models, testing rig features and test results are presented here. For better interpretation of results, a comparison of the test results with a hot rolled section is also presented. The test results have shown that the proposed CFS composite beams are promising both in terms of better structural performance as well as economy.

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참고문헌

  1. Anbarasu, M. and Sukumar, S. (2013), "Study on the effect of ties in the intermediate length cold formed steel (CFS) columns", Struct. Eng. Mech., Int. J., 46(3), 323-335. https://doi.org/10.12989/sem.2013.46.3.323
  2. Anbarasu, M. and Sukumar, S, (2014), "Influence of spacers on ultimate strength of intermediate length thin walled columns", Steel Compos. Struct., Int. J., 16(4), 37-454.
  3. Bayan, A, Sariffuddin, S. and Hanim, O. (2011), "Cold-formed steel joints and structures -A review", Int. J. Civil Struct. Eng., 2(2), 621-634.
  4. Dar, M.A., Yusuf, M., Dar, A.R. and Raju, J. (2015), "Experimental study on innovative sections for cold formed steel beams", Steel Compos. Struct., Int. J., 19(6), 1599-1610. https://doi.org/10.12989/scs.2015.19.6.1599
  5. Dar, M.A., Subramanian, N., Dar, A.R. and Raju, J. (2015), "Experimental investigations on the structural behaviour of a distressed bridge", Struct. Eng. Mech., Int. J., 56(4), 695-705. https://doi.org/10.12989/sem.2015.56.4.695
  6. Dubina, D., Ungureanu, V. and Landolfo, R. (2012), Design of Cold-formed Steel Structures: Eurocode 3: Design of Steel Structures. Part 1-3 Design of cold-formed Steel Structures, Wiley.
  7. Hancock, G.M. (2001), Cold-Formed Steel Designing and Analysis, Marcel Dekker, Sydney, Australia.
  8. Heva, Y.B. and Mahendran, M. (2013), "Flexural-torsional buckling tests of cold-formed steel compression members at elevated temperatures", Steel Compos. Struct., Int. J., 14(3), 205-227. https://doi.org/10.12989/scs.2013.14.3.205
  9. IS 1608 (2005), Indian Standard-Metallic Materials - Tensile Testing at Ambient Temperature; Bureau of Indian Standards, New Delhi, India.
  10. IS 800 (2007), Indian Standard Code of Practice for General Construction in Steel; Bureau of Indian Standards, New Delhi, India.
  11. Kumar, N. and Sahoo, D.R. (2016), "Optimization of lip length and aspect ratio of thin channel sections under minor axes bending", Thin-Wall. Struct., 100, 158-169. https://doi.org/10.1016/j.tws.2015.12.015
  12. Laim, L., Rodrigues, J.P.C. and da Silva, L.S. (2013), "Experimental and numerical analysis on the structural behaviour of cold-formed steel beams", Thin-Wall. Struct., 72, 1-13. https://doi.org/10.1016/j.tws.2013.06.008
  13. Lindner, J., Schmidt, J.S. and Subramanian, N. (1983), "Traglastversuche an zweifeldtragern mit dunnwandigen CProfilen", Der Stahlbau, Volume 52, May, pp. 143-147.
  14. Lukowicz, A. and Urbanska-Galewska, E. (2014), "Deformations of innovative cold-formed 'GEB' sections", Proceedings of the 7th European Conference on Steel and Composite Structures, Naples, Italy, September.
  15. Manikandan, P., Sukumar, S. and Balaji, T.U. (2014), "Effective shaping of cold-formed thin-walled built-up beams in pure bending", Arab. J. Sci. Eng., 39(8), 6043-6054. https://doi.org/10.1007/s13369-014-1261-x
  16. McDonald, M., Heiyantuduwa, M.A. and Rhodes, J. (2008), "Recent developments in the design of cold-formed steel members and structures", Thin-Wall. Struct., 46(9), 1047-1053. https://doi.org/10.1016/j.tws.2008.01.039
  17. O'Connor, C., Goldsmith, P.R. and Ryall, T.J. (1965), "The Reinforcement of Steel Beams to improve Beam Buckling Strength", Civil Engineering Transaction, Institute of Engineers Australia.
  18. Paczos, P. (2014), "Experimental investigation of C-beams with non-standard flanges", J. Constr. Steel Res., 93, 77-87. https://doi.org/10.1016/j.jcsr.2013.09.009
  19. Siahaan, R., Keerthan, P. and Mahendran, M. (2014), "Section moment capacity tests of rivet-fastened rectangular hollow flange channel beams", Proceedings of the 22nd International Specialty Conference on Cold-Formed Steel Design and Construction, St. Louis, MO, USA, November, pp. 277-294.
  20. Standards of Australia (2005), Cold-formed Steel Structures, AS/NZS 4600.
  21. Tondini, N. and Morbioli, A. (2014), "Experimental analysis of cold-formed steel rectangular hollow flange sections", Proceedings of European Conference on Steel and Composite Structures, Naples, Italy, September.
  22. Valsa Ipe, T., Sharada Bai, H., Manjulavani, K. and Iqbal, M.M.Z. (2013), "Flexural behaviour of cold-formed steel-concrete composite beams", Steel Compos. Struct., Int. J., 14(2), 105-120. https://doi.org/10.12989/scs.2013.14.2.105
  23. Wang, L. and Young, B. (2014a), "Cold-formed steel channel sections with web stiffeners subjected to local and distortional buckling - Part I: tests and finite element analysis", Proceedings of the 22nd International Specialty Conference on Cold-Formed Steel Design and Construction, St. Louis, MO, USA, November, pp. 229-242.
  24. Wang, L. and Young, B. (2014b), "Cold-formed steel channel sections with web stiffeners subjected to local and distortional buckling - Part II: parametric study and design rules", Proceedings of the 22nd International Specialty Conference on Cold-Formed Steel Design and Construction, St. Louis, MO, USA, November, pp. 243-258.
  25. Wang, L. and Young, B. (2014c), "Design of cold-formed steel channels with stiffened webs subjected to bending", Thin-Wall. Struct., 85, 81-92. https://doi.org/10.1016/j.tws.2014.08.002
  26. Wang, F.L., Yang, J. and Lim, J. (2014), "Numerical studies of collapse behaviour of multi-span beams with cold-formed sigma sections', In Proceedings of the 22nd International Specialty Conference on Cold-Formed Steel Design and Construction, St. Louis, MO, USA, November, pp. 345-358.
  27. Winter, G. (1970), Commentary on the 1968 Edition of the specification for the Design of Cold-formed Steel Structural Members, American Iron & Steel Institute, New York, NY, USA.
  28. Yu, C. and Schafer, B.W. (2002), "Local buckling tests on coldformed steel beams", Proceedings of the 16th International Specialty Conference on Cold-Formed Steel Structures, Orlando, FL, USA, October.
  29. Yu, C. and Schafer, B.W. (2006), "Distortional buckling tests on cold-formed steel beams", J. Struct. Eng., ASCE, 132(4), 515-528. https://doi.org/10.1061/(ASCE)0733-9445(2006)132:4(515)
  30. Zhao, W. (2001), "Behaviour and design of cold-formed steel hollow flange sections under axial compression", Ph.D. Thesis; School of Civil Engineering, Queensland University of Technology, Brisbane, Australia.
  31. Zhou, W. and Jiang, L. (2017), "Distortional buckling of coldformed lipped channel columns subjected to axial compression", Steel Compos. Struct., Int. J., 23(3), 331-338. https://doi.org/10.12989/scs.2017.23.3.331

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