Steel and Composite Structures

  • 제40권5호
  • /
  • Pages.733-746
  • /
  • 2021
  • /
  • 1229-9367(pISSN)
  • /
  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Parametric study and Improved design guidelines of CFS battened built-up columns

  • Vijayanand, S. (Department of Civil Engineering, Kongu Engineering College) ;
  • Anbarasu, M. (Department of Civil Engineering, Government College of Engineering)
  • 투고 : 2021.05.28
  • 심사 : 2021.08.07
  • 발행 : 2021.09.10
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents the parametric study on the strength and behaviour of CFS closed built-up battened columns. The CFS closed built-up battened column consists of two lipped channels placed face-to-face with a uniform spacing of battens. Finite element models are validated with the results of the test specimens available in the thesis of the first author. The parametric study on 176 cold-formed steel built-up column sections is extended by using the validated finite element modeling covering a wide range of global column slenderness, plate slenderness and yield stress. The numerical results from the parametric study are compared with the design strengths calculated by the European specifications (EN1993-1-3:2006) and AISI Specifications (AISI S100:2016). The comparison of parametric results with the design strength predictions has indicated the design guidelines of the specifications need improvement. The design strength predictions of the specifications are also assessed by conducting the reliability analysis. Therefore, the exiting design rules are modified to improve the accuracy of the design strength predictions for the CFS closed built-up battened columns subjected to the axial compression. Furthermore, the reliability of the proposed methods is confirmed by means of reliability analysis.

키워드

참고문헌

  1. ABAQUS (2014), ABAQUS Standard (Version 6.14.2), Johnston, RI: Simulia Inc.
  2. AISI (2007), North American specification for the design of cold formed steel structural members, Washington, DC, USA.
  3. AISI (2016), North American specification for the design of cold formed steel structural members, Washington, DC, USA.
  4. Anbarasu, M. and Ashraf, M. (2016), "Behaviour and design of cold-formed lean duplex stainless steel lipped channel columns", Thin-Wall. Struct., 104, 106-115. https://doi.org/10.1016/j.tws.2016.03.012.
  5. Anbarasu, M. and Dar, M. (2020a), "Axial capacity of CFS built-up columns comprising of lipped channels with spacers: Nonlinear response and design", Eng. Struct., 213(1). https://doi.org/10.1016/j.engstruct.2020.110559.
  6. Anbarasu, M. and Dar, M. (2020b), "Improved design procedure for battened cold-formed steel built-up columns composed of lipped angles", J. Constru. Steel Res., 164, 105781. https://doi.org/10.1016/j.jcsr.2019.105781.
  7. Anbarasu, M. and Sukumar, S. (2014), "Influence of spacers on ultimate strength of intermediate length thin walled columns", Steel Compos. Struct., 16(4), 437-454. https://doi.org/10.12989/scs.2014.16.4.437.
  8. Anbarasu, M., Kumar, S.B. and Sukumar, S. (2013), "Study on the effect of ties in the intermediate length cold formed steel (CFS) columns", Struct. Eng. Mech., 46(3), 323-335. https://doi.org/10.12989/sem.2013.46.3.323.
  9. AS1170.1 (2002), Standards Association of Australia, Sydney, Australia.
  10. ASCE (2006), Minimum design loads for buildings and other structures, ASCE/SEI7-05. American Society of Civil Engineers Standard; 2006., China, October.
  11. Australian Standard, SAA Loading Code, Part1: Dead and Live Loads and Load Combinations.
  12. Bandula Heva, Y. and Mahendran, M. (2012), "Flexural-torsional buckling tests of CFS compression members at elevated temperatures", Steel Compos. Struct., 14(3), 205-227. https://doi.org/10.12989/scs.2013.14.3.205.
  13. Biggs, K.A., Ramseyer, C., Ree, S. and Kang, T.H.K. (2015), "Experimental testing of cold-formed built-up members in pure compression", Steel Compos. Struct., 18(6), 1331-1351. https://doi.org/10.12989/scs.2015.18.6.1331.
  14. Dabaon, M., Ellobody, E. and Ramzy, K. (2015), "Experimental investigation of built-up CFS section battened columns", Thin-Wall. Struct., 92, 137-145. https://doi.org/10.1016/j.tws.2015.03.001.
  15. Dar, M.A., Sahoo, D.R. and Jain, A.K. (2020), "Influence of chord compactness and slenderness on axial compression behavior of built-up battened CFS columns", J. Build. Eng., 32. https://doi.org/10.1016/j.jobe.2020.101743.
  16. Dar, M.A., Sahoo, D.R. and Jain, A.K. (2021a), "Interaction between chord compactness and lacing slenderness in CFS built-up columns", Structures, 30. https://doi.org/10.1016/j.istruc.2021.01.065.
  17. Dar, M.A., Sahoo, D.R., Jain, A.K. and Sharma S (2021b), "Monotonic tests and numerical validation of cold-formed steel battened built-up columns", Thin-Wal. Struct., 159. https://doi.org/10.1016/j.tws.2020.107275.
  18. Dar, M.A., Sahoo, D.R., Pulikkal, S. and Jain, A.K. (2018a), "Behaviour of laced built-up CFS columns: Experimental investigation and numerical validation", Thin-Wall. Struct., 132, 398-409. https://doi.org/10.1016/j.tws.2018.09.012.
  19. Dar, M.A., Subramanian, N., Dar, A.R., Anbarasu, M., James BP Lim. And Atif, M. (2018b), Behaviour of partly stiffened cold-formed steel built-up beams: Experimental investigation and numerical validation", Adv. Struct. Eng., 22(1), 172-186. https://doi.org/10.1177/1369433218782767.
  20. Devi, S.V. and Singh, K.D. (2020), "Finite element study of lean duplex stainless steel semi-elliptical hollow section members with circular perforation subjected to torsion", Thin-Wall. Struct., 146. https://doi.org/10.1016/j.tws.2019.106464.
  21. El Aghoury, M., Salem, A., Hanna, M. and Amoush, E. (2013), "Ultimate capacity of battened columns composed of four equal slender angles", Thin-Wall. Struct., 63, 175-185. https://doi.org/10.1016/j.tws.2012.07.019.
  22. El Aghoury, M., Salem, A., Hanna, M. and Amoush, E. (2015), "Strength of cold formed battened columns subjected to eccentric axial compressive force", J. Constr. Steel Res., 113, 58-70. https://doi.org/10.1016/j.jcsr.2015.04.008.
  23. Eurocode 3 (2005), Design of steel structures-Part1-1: General rules and rules for building, BS EN 1993-1-1, London.
  24. Eurocode 3 (2006), Design of steel structures-Part 1-3: General rules supplementary rules for cold-formed members and sheeting, BS EN 1993-1-3, Brussels.
  25. Eurocode 3 (2006), Design of steels tructures-Part1-5: Plated structural elements, BS EN 1993-1-5, London.
  26. Ghannam, M. (2017), "Axial load capacity of CFS built-up stub columns", Int. J. Steel Struct., 17(4), 1273-1283. https://doi.org/10.1007/s13296-017-1202-0.
  27. Gunalan, S. and Mahendran, M. (2013), "Improved design rules for fixed ended CFS columns subject to flexural-torsional buckling", Thin-Wall. Struct., 73, 1-17. https://doi.org/10.1016/j.tws.2013.06.013.
  28. Imran, M., Mahendran, M. and Keerthan, P. (2017), "Sensitivity of resistance of cold-formed steel tubular columns to elevated temperature mechanical properties", Appl. Fire Eng., 11-18. https://doi.org/10.1201/9781315107202-2.
  29. Kherbouche, S. and Megnounif, A. (2019), "Numerical study and design of thin walled cold formed steel built-up open and closed section columns", Eng. Struct., 179, 670-682. https://doi.org/10.1016/j.engstruct.2018.10.069.
  30. Kripka, M. and Chamberlain Pravia, Z.M. (2013), "CFS channel columns optimization with simulated annealing method", Struct. Eng. Mech., 48(3), 383-394. https://doi.org/10.12989/sem.2013.48.3.383.
  31. Lu, Y., Li, W., Zhou, T. and Wu, H. (2017), "Novel local buckling formulae for cold-formed C-section columns considering end condition effect", Thin-Wall. Struct., 116, 265-276. https://doi.org/10.1016/j.tws.2017.02.034.
  32. Maia, W., Vieira Jr, L., Schafer, B. and Malite, M. (2016), "Experimental and numerical investigation of CFS double angle members under compression", J. Constr. Steel Res., 121, 398-412. https://doi.org/10.1016/j.jcsr.2016.03.003.
  33. Megnounif, A., Djafour, M., Belarbi, A. and Kerdal, D. (2008), "Strength buckling predictions of CFS built-up columns", Struct. Eng. Mech., 28(4), 443-460. https://doi.org/10.12989/sem.2008.28.4.443.
  34. Megnounif, A., Djafour, M., Belarbi, A. and Kerdal, D. (2008), "Strength buckling predictions of CFS built-up columns", Struct. Eng. Mech., 28(4), 443-460. https://doi.org/10.12989/sem.2008.28.4.443.
  35. Muthuraj, H., Sekar, S., Mahendran, M. and Deepak, O. (2017), "Post buckling mechanics and strength of CFS columns exhibiting Local-Distortional interaction mode failure", Struct. Eng. Mech., 64(5), 621-640. https://doi.org/10.12989/sem.2017.64.5.621.
  36. Nie, S., Zhou, T., Liao, F. and Yang, D. (2019), "Study on axial compressive behavior of quadruple C-channel built-up CFS columns", Struct. Eng. Mech., 70(4), 499-511. https://doi.org/10.12989/sem.2019.70.4.499.
  37. Roy, K., Ting, T.C.H., Lau, H.H. and Lim, J.B. (2018), "Nonlinear behavior of axially loaded back-to-back built-up CFS un-lipped channel sections", Steel Compos. Struct., 28(2), 233-250. https://doi.org/10.12989/scs.2018.28.2.233.
  38. Roy, K., Ting, T.C.H., Lau, H.H. and Lim, J.B.P. (2019a), "Experimental and numerical investigations on the axial capacity of cold- formed steel built-up box sections", J. Constr. Steel Res., 160, 411-427. https://doi.org/10.1016/j.jcsr.2019.05.038.
  39. Roy, K., Lau, H.H. and Lim, J.B.P. (2019b), "Finite element modelling of back-to-back built-up cold-formed stainless-steel lipped channels under axial compression", Steel Compos. Struct., 33(1), 37-66. https://doi.org/10.12989/scs.2019.33.1.037
  40. Schafer, B.W. and Pecoz, T. (1998), "Computational modelling of cold-formed steel: characterizing geometric imperfections and residual stresses", J. Constr. Steel Res., 47(3), 193-210. https://doi.org/10.1016/S0143-974X(98)00007-8.
  41. Selvaraj, S. and Madhavan, M. (2021), "Design of cold-formed steel built-up columns subjected to local-global interactive buckling using direct strength method", Thin-Wall. Struct., 159. https://doi.org/10.1016/j.tws.2020.107305.
  42. Shi, G., Liu, Z., Ban, H., Zhang, Y., Shi, Y. and Wang, Y. (2012), "Tests and finite element analysis on the local buckling of 420 MPa steel equal angle columns under axial compression", Steel Compos. Struct., 12(1), 31-51. https://doi.org/10.12989/scs.2011.12.1.031.
  43. Standards of Australia (2018), CFS Structures, AS/NZS 4600.
  44. Szymczak, C.K. and Kujawa, M. (2019), "Buckling and initial post-local buckling behaviour of cold-formed channel member flange", Thin-Wall. Struct., 137, 177-184. https://doi.org/10.1016/j.tws.2019.01.011
  45. Veljkovic. M. and Johansson, B. (2008), "Thin-walled steel columns with partially closed cross-section: Tests and computer simulations", J. Constr. Steel Res., 64(7-8), 816-821. https://doi.org/10.1016/j.jcsr.2008.01.038.
  46. Vijayanand, S. (2021), "Axial capacity assessment and nonlinear behaviour of cold-formed steel built-up columns", PhD Thesis Anna university, Chennai, India.
  47. Vijayanand, S. and Anbarasu, M. (2017), "Effect of spacers on ultimate strength and behavior of cold-formed steel built-up columns", J. Procedia Eng., 173, 1423-1430. https://doi.org/10.1016/j.proeng.2016.12.205
  48. Vijayanand, S. and Anbarasu, M. (2020), "Behavior of CFS built-up battened columns: Parametric study and design recommendation", Struct. Eng. Mech., 74(3), 381-394. https://doi.org/10.12989/sem.2020.74.3.381.
  49. Whittle, J. and Ramseyer, C. (2009), "Buckling capacities of axially loaded, cold-formed, built-up C-channels", Thin-Wall. Struct., 47(2), 190-201. https://doi.org/10.1016/j.tws.2008.05.014.
  50. Young, B. and Chen, J. (2008), "Design of CFS built-up closed sections with intermediate stiffeners", J. Struct. Eng., 134(5), 727-737. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:5(727).
  51. Zhang, J.H. and Young, B. (2015), "Numerical investigation and design of cold-formed steel built-up open section columns with longitudinal stiffeners", Thin-Wall. Struct., 89, 178-191. https://doi.org/10.1016/j.tws.2014.12.011.
  52. Zhang, J.H. and Young, B. (2018), "Finite element analysis and design of CFS built-up closed section columns with web stiffeners", Thin-Wall. Struct., 131, 223-237. https://doi.org/10.1016/j.tws.2018.06.008.
  53. Zhou, W. and Jiang, L. (2017), "Distortional buckling of cold-formed lipped channel columns subjected to axial compression", Steel Compos. Struct., 23(3), 331-338. https://doi.org/10.12989/scs.2017.23.3.331.