DOI QR코드

DOI QR Code

Mechanical behaviour of concrete filled double skin steel tubular stub columns confined by FRP under axial compression

  • Wang, Jun (College of Civil Engineering, Nanjing Tech University) ;
  • Liu, Weiqing (College of Civil Engineering, Nanjing Tech University) ;
  • Zhou, Ding (College of Civil Engineering, Nanjing Tech University) ;
  • Zhu, Lu (College of Civil Engineering, Nanjing Tech University) ;
  • Fang, Hai (College of Civil Engineering, Nanjing Tech University)
  • 투고 : 2012.07.16
  • 심사 : 2014.03.18
  • 발행 : 2014.10.25

초록

The present study focuses on the mechanical behaviour of concrete filled double skin steel tubular (CFDST) stub columns confined by fiber reinforced polymer (FRP). A series of axial compression tests have been conducted on two CFDST stub columns, eight CFDST stub columns confined by FRP and a concrete-filled steel tubular (CFST) stub column confined by FRP, respectively. The influences of hollow section ratio, FRP wall thickness and fibre longitudinal-circumferential proportion on the load-strain curve and the concrete stress-strain curve for stub columns with annular section were discussed. The test results displayed that the FRP jacket can obviously enhance the carrying capacity of stub columns. Based on the test results, a new model which includes the effects of confinement factor, hollow section ratio and lateral confining pressure of the outer steel tube was proposed to calculate the compressive strength of confined concrete. Using the present concrete strength model, the formula to predict the carrying capacity of CFDST stub columns confined by FRP was derived. The theoretically predicted results agree well with those obtained from the experiments and FE analysis. The present method is also adapted to calculate the carrying capacity of CFST stub columns confined by FRP.

키워드

참고문헌

  1. Bank, L.C. (2006), Composites for Construction: Structural Design with FRP Materials, John Wiley & Sons.
  2. Furlong, R.W. (1967), "Strength of steel-encased concrete beam-columns", J. Struct. Div., 93(5), 113-125.
  3. Haedir, J., Zhao, X.L., Bambach, M.R. and Grzebieta, R.H. (2010), "Analysis of CFRP externally-reinforced steel CHS tubular beams", Compos. Struct., 92(12), 2992-3001. https://doi.org/10.1016/j.compstruct.2010.05.012
  4. Han, L.H., Huang, H. and Zhao, X.L. (2009), "Analytical behaviour of concrete-filled double skin steel tubular (CFDST) beam-columns under cyclic loading", Thin-Wall. Struct., 47(6-7), 668-680.
  5. Hu, H.T. and Su, F.C. (2011), "Nonlinear analysis of short concrete-filled double skin tube columns subjected to axial compressive forces", Marine Struct., 24(4), 319-337. https://doi.org/10.1016/j.marstruc.2011.05.001
  6. Jiao, H. and Zhao, X.L. (2004), "CFRP strengthened butt-welded very high strength (VHS) circular steel tubes", Thin-Wall. Struct., 42(7), 963-978. https://doi.org/10.1016/j.tws.2004.03.003
  7. JTS 153-3-2007 (China Code) (2007), Technical Specification for Corrosion Protection of Steel Structures for Sea Port Construction, Ministry of Transport of the People's Republic of China.
  8. Karimi, K., Tait, M.J. and EI-Dakhakhni, W.W. (2011), "Testing and modeling of a novel FRP-encased steel-concrete composite column", Compos. Struct., 93(5), 1463-1473. https://doi.org/10.1016/j.compstruct.2010.11.017
  9. Knowles, R.B. and Park, R. (1969), "Strength of concrete-filled steel tubular columns", J. Struct. Div., 95(12), 2565-2587.
  10. Lam, L. and Teng, J.G. (2003), "Design-oriented stress-strain models for FRP-confined concrete", Construct. Build. Mater., 17(6), 471-489. https://doi.org/10.1016/S0950-0618(03)00045-X
  11. Miller, T.C., Chajes, M.J., Mertz, D.R. and Hastings, J.N. (2001), "Strengthening of a steel bridge girder using CFRP plates", J. Bridge Eng., 6(6), 514-522. https://doi.org/10.1061/(ASCE)1084-0702(2001)6:6(514)
  12. Montague, P. (1978), "The experimental behaviour of double-skinned, composite, circular cylindrical shells under external pressure", J. Mech. Eng. Sci., 20(1), 21-34. https://doi.org/10.1243/JMES_JOUR_1978_020_005_02
  13. Nie, J.G. and Liao, Y.B. (2008), "Bearing capacity calculations for concrete filled double skin tubes", J. Tsinghua Univ. (Sci. & Tech.), 48(3), 312-315. [In Chinese]
  14. Nishino, T. and Furukawa, T. (2003), "Strength and deformation capacities of circular hollow section steel member reinforced with carbon fiber", J. Struct. Eng., B, 49B, 489-496.
  15. Park, J.W., Hong, Y.K., Hong, G.S., Kim, J.H. and Choi, S.M. (2011), "Design formulas of concrete filled circular steel tubes reinforced by carbon fiber reinforced plastic sheets", Procedia Eng., 14, 2916-2922. https://doi.org/10.1016/j.proeng.2011.07.367
  16. Schnerch, D. and Rizkalla, S. (2004), "Strengthening of scaled steel-concrete composite girders and steel monopole towers with CFRP", FRP Composite in Civil Engineering, Taylor & Francis Group, London, UK.
  17. Seica, M.V. and Packer, J.A. (2007), "FRP materials for the rehabilitation of tubular steel structures, for underwater applications", Compos. Struct., 80(3), 440-450. https://doi.org/10.1016/j.compstruct.2006.05.029
  18. Sen, R. and Liby, L. (1994), "Repair of steel composite bridge sections using carbon fiber reinforced plastic laminates, U.S", Department of Transportation Contract B-7932; University of South Florida, Tampa, FL, USA.
  19. Shaat, A. and Fam, A. (2006), "Axial loading tests on CFRP-retrofitted short and long HSS steel columns", Can. J. Civil Eng., 33(4), 458-470. https://doi.org/10.1139/l05-042
  20. Tao, Z., Han, L.H. and Zhao, X.L. (2004), "Behaviour of concrete-filled double skin (CHS inner and CHS outer) steel tubular stub columns and beam-columns", J. Construct. Steel Res., 60(8), 1129-1158. https://doi.org/10.1016/j.jcsr.2003.11.008
  21. Tao, Z., Han, L.H. and Wang, L.L. (2007), "Compressive and flexural behaviour of CFRP-repaired concrete-filled steel tubes after exposure to fire", J. Construct. Steel Res., 63(8), 1116-1126. https://doi.org/10.1016/j.jcsr.2006.09.007
  22. Tao, Z., Han, L.H. and Zhuang, J.P. (2008), "Cyclic performance of fire-damaged concrete-filled steel tubular beam-columns repaired with CFRP wraps", J. Construct. Steel Res., 64(1), 37-50. https://doi.org/10.1016/j.jcsr.2007.02.004
  23. Teng, J.G. and Hu, Y.M. (2007), "Behaviour of FRP-jacketed circular steel tubes and cylindrical shells under axial compression", Construct. Build. Mater., 21(4), 827-838. https://doi.org/10.1016/j.conbuildmat.2006.06.016
  24. Teng, J.G., Yu, T., Wong, Y.L. and Dong, S.L. (2007), "Hybrid FRP-concrete-steel tubular columns: Concept and behavior", Construct. Build. Mater., 21(4), 846-854. https://doi.org/10.1016/j.conbuildmat.2006.06.017
  25. Wang, Q.L., Wu, W. and Zhao, Y.H. (2005a), "An experimental study on concentrically concrete circular CFRP-steel composite tubular stub columns", China Civil Eng. J., 38(10): 44-48. [In Chinese]
  26. Wang, Q.L., Zhao, C.L., Zhang, H.B. and Zhang, Y.D. (2005b), "The simplified calculation of bearing capacity on concentrically concrete circular CFRP-steel composite tubular stub columns", J. Shenyang Jianzhu Univ. (Natural Science, China), 21(6), 612-615. [In Chinese]
  27. Zhao, X.L. and Zhang, L. (2007), "State-of the-art review on FRP strengthened steel structures", Eng. Struct., 29(8), 1808-1823. https://doi.org/10.1016/j.engstruct.2006.10.006
  28. Zhao, X.L., Grzebieta, R.H. and Elchalakani, M. (2002), "Tests of concrete-filled double skin CHS composite stub columns", Steel Compos. Struct., Int. J., 2(2),129-146. https://doi.org/10.12989/scs.2002.2.2.129

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  8. Axial Compression Behaviour of Hybrid Double-Skin Tubular Columns Filled with Rubcrete vol.3, pp.2, 2014, https://doi.org/10.3390/jcs3020062
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