Steel and Composite Structures

  • 제29권4호
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  • Pages.465-481
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  • 2018
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Ultimate strength and strain models proposed for CFRP confined concrete cylinders

  • Berradia, Mohammed (Department of Civil Engineering, Laboratory of Structures, Geotechnics and Risks (LSGR), Hassiba Benbouali University of Chlef) ;
  • Kassoul, Amar (Department of Civil Engineering, Laboratory of Structures, Geotechnics and Risks (LSGR), Hassiba Benbouali University of Chlef)
  • 투고 : 2018.03.27
  • 심사 : 2018.11.08
  • 발행 : 2018.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

The use of external carbon-fiber-reinforced polymer (CFRP) laminates is one of the most effective techniques existing for the confinement of circular concrete specimens. Currently, several researches have been made to develop models for predicting the ultimate conditions of this type of confinement. As most of the major existing models were developed based on limited experimental database. This paper presents the development of new confinement ultimate conditions, strength and strain models, for concrete cylinders confined with CFRP composites based on a statistical analysis of a large existing experimental database of 310 cylindrical concrete specimens wrapped with CFRP. The database is used to evaluate the performance of the proposed and major existing strength and strain models. Based on the two different statistical indices, the coefficient of determination ($R^2$) and the Root Mean Square Error (RMSE), the two proposed confinement ultimate conditions presents a good performance compared to the major existing models except the models of Lam and Teng (2003) and Youssef et al. (2007) which have relatively similar performance to the proposed models.

키워드

참고문헌

  1. ACI 440 (2008), Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures; American Concrete Institute, USA.
  2. Aire, C., Gettu, R. and Casas, J.R. (2001), "Study of the compressive behavior of concrete confined by fiber reinforced composites", International Conference on Composites in Constructions, A.A. Balkema Publishers, Lisse, The Netherlands, pp. 239-243.
  3. Benzaid, R., Mesbah, H. and Chikh, N. (2010), "FRP-confined concrete cylinders: axial compression experiments and strength model", J. Reinf. Plast. Compos., 29(16), 2469-2488. https://doi.org/10.1177/0731684409355199
  4. Berradia, M. and Kassoul, A. (2017), "Combine effect of CFRPTSR confinement on circular reinforced concrete columns", Comput. Concrete, Int. J., 19(1), 041-049.
  5. Berthet, J.F., Ferrier, E. and Hamelin, P. (2005), "Compressive behavior of concrete externally confined by composite jackets. Part A: Experimental study", Constr. Build Mater., 19(3), 223-232. https://doi.org/10.1016/j.conbuildmat.2004.05.012
  6. Bullo, S. (2003), "Experimental study of the effects of the ultimate strain of fiber reinforced plastic jackets on the behavior of confined concrete", International Conference on Composites Inconstruction, Cosenza, Italy, pp. 465-470.
  7. Carey, S.A. and Harries, K.A. (2003), "The effects of shape, „gap‟, and scale on the behavior and modeling of variably confined concrete", Report no. ST03-05; University of South Carolina, CO, USA.
  8. Carey, S.A. and Harries, K.A. (2005), "Axial behavior and modeling of small-, medium-, and large-scale cylindrical sections confined with CFRP jackets", ACI. Struct. J., 102(4), 596-604.
  9. Cui, C. and Sheikh, S.A. (2010), "Experimental study of normaland high-strength concrete confined with fiber-reinforced polymers", J. Compos. Constr., 14(5), 553-561. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000116
  10. De Lorenzis, L., Micelli, F. and La Tegola, A. (2002), "Influence of specimen size and resin type on the behavior of FRPconfined concrete cylinders", Proceedings of the 1st International Conference on Advanced Polymer Composites for Structural Applications in Construction, Thomas Telford, London, UK, pp. 231-39.
  11. Fahmy, M. and Wu, Z. (2010), "Evaluating and proposing models of circular concrete columns confined with different FRP composites", Compos. Part B: Eng., 41(3), 199-213. https://doi.org/10.1016/j.compositesb.2009.12.001
  12. Fanggi, B.A.L. and Ozbakkaloglu, T. (2015), "Square FRP-HSCsteel composite columns: Behavior under axial compression", Eng. Struct., 92, 156-171.
  13. Fardis, M.N. and Khalili, H.H. (1982), "FRP-encased concrete as a structural material", Mag. Concr. Res., 34(121), 191-202. https://doi.org/10.1680/macr.1982.34.121.191
  14. Harmon, T.G. and Slattery, K.T. (1992), "Advanced composite confinement of concrete", Proceedings of the 1st International Conference on Advanced Composite Materials in Bridges and Structures, Canadian Society for Civil Engineering, Sherbrooke, Canada, pp.299-306.
  15. Howie, I. and Karbhari, V.M. (1995), "Effect of tow sheet composite wrap architecture on strengthening of concrete due to confinement. I: Experimental studies", J. Reinf. Plast. Compos., 14(9), 1008-1030.
  16. Ilki, A., Kumbasar, N. and Koc, V. (2004), "Low strength concrete members externally confined with FRP sheets", Struct. Eng. Mech., Int. J., 18(2), 167-194.
  17. Jiang, T. and Teng, J.G. (2007), "Analysis-oriented stress-strain models for FRP-confined concrete", Eng. Struct., 29(11), 2968-2986. https://doi.org/10.1016/j.engstruct.2007.01.010
  18. Kono, S., Inazumi, M. and Kaku, T. (1998), "Evaluation of confining effects of CFRP sheets on reinforced concrete members", Proceedings of the 2nd International Conference on Composites in Infrastructure, University of Arizona, Tucson, AZ, USA, pp. 343-55.
  19. Lam, L. and Teng, J.G. (2003), "Design-oriented stress-strain model for FRP-confined concrete", Const. Build. Mater., 17(6-7), 471-489. https://doi.org/10.1016/S0950-0618(03)00045-X
  20. Lam, L. and Teng, J.G. (2004), "Ultimate condition of fiber reinforced polymer-confined concrete", J. Compos. Constr., 8(6), 539-548. https://doi.org/10.1061/(ASCE)1090-0268(2004)8:6(539)
  21. Lam, L., Teng, J.G., Cheung, C.H. and Xiao, Y. (2006) "FRPconfined concrete under axial cyclic compression", Cem. Concrete Compos., 28(10), 949-958. https://doi.org/10.1016/j.cemconcomp.2006.07.007
  22. Lezgy-Nazargah, M., Dezhangah, M. and Sepehrinia, M. (2018), "The effects of different FRP/concrete bond-slip laws on the 3D nonlinear FE modeling of retrofitted RC beams - A sensitivity analysis", Steel Compos. Struct., Int. J., 26(6), 347-360.
  23. Lu, W.Y., Yu, H.W., Chen, C.L., Liu, S.L. and Chen, T.C. (2015), "High-strength concrete deep beams with openings strengthened by carbon fiber reinforced plastics", Comput. Concrete, Int. J., 15(1), 21-35.
  24. Mahdi Razavi, S. and Zahiraniza, M. (2018), "Rehabilitation of notched circular hollow sectional steel beam using CFRP patch", Steel Compos. Struct., Int. J., 26(2), 151-161.
  25. Matthys, S., Toutanji, H., Audenaert, K. and Taerwe, L. (2005), "Axial load behavior of largescale columns confined with fiberreinforced polymer composites", ACI. Struct. J., 102(2), 258-267.
  26. Micelli, F., Myers, J.J. and Murthy, S. (2001), "Effect of environmental cycles on concrete cylinders confined with FRP", Proceedings of International Conference on Composites in Constructions, A.A. Balkema Publishers, Lisse, The Netherlands, pp. 317-322.
  27. Modarelli, R., Micelli, F. and Manni, O. (2005), "FRPconfinement of hollow concrete cylinders and prisms", Proceedings of the 7th international symposium on fiber reinforced polymer reinforcement for reinforced concrete structures (FRPRCS-7), NO. SP-230; American Concrete Institute, Farmington, MI, USA, pp. 1029-1046.
  28. Morsy, A. and Mahmoud, E.T. (2013), "Bonding techniques for flexural strengthening of R.C. beams using CFRP laminates", Ain. Sha. Eng. J., 4(3), 369-374. https://doi.org/10.1016/j.asej.2012.11.004
  29. Nam, J.W., Yoon, I.S. and Yi, S.T. (2016), "Numerical evaluation of FRP composite retrofitted reinforced concrete wall subjected to blast load", Comput. Concrete, Int. J., 17(2), 215-225. https://doi.org/10.12989/cac.2016.17.2.215
  30. Newman, K. and Newman, J.B. (1971), "Failure theories and design criteria for plain concrete", Proceedings of International Conference on Structures, Solid Mechanics, and Engineering Design, Wiley Interscience, New York City, NY, USA, pp. 936-995.
  31. Ozbakkaloglu, T. (2013), "Compressive behavior of concretefilled FRP tube columns: Assessment of critical column parameters", Eng. Struct., 51, 188-199.
  32. Ozbakkaloglu, T. and Lim, J.C. (2013), "Axial compressive behavior of FRP-confined concrete: Experimental test database and a new design-oriented model", Compos. Part B., 55, 607-634.
  33. Picher, F. and Rochette, P. (1996), "Labossiere P. Confinement of concrete cylinders with CFRP", Proceedings of the 1st International Conference on Composites for Infrastructures, University of Arizona, Tucson, AZ, USA, pp. 829-841.
  34. Richart, F.E., Brandtzaeg, A. and Brown, R.L. (1929), "The failure of plain and spirally reinforced concrete in compression", Engineering Experiment Station Bulletin No. 190; University of Illinois, Urbana, IL, USA.
  35. Rochette, P. and Labossiere, P. (2000), "Axial testing of rectangular column models confined with composites", J. Compos. Constr., 4(3), 129-136. https://doi.org/10.1061/(ASCE)1090-0268(2000)4:3(129)
  36. Rousakis, T. and Tepfers, R. (2004), "Behavior of concrete confined by high E-modulus carbon FRP sheets, subjected to monotonic and cyclic axial compressive load", Nord. Concr. Res. J., 31(1), 73-82.
  37. Sadeghian, P. and Fam, A. (2015), "Improved design-oriented confinement models for FRP-wrapped concrete cylinders based on statistical analyses", Eng. Struct., 87, 162-182.
  38. Shahawy, M., Mirmiran, A. and Beitelman, A. (2000), "Test and modeling of carbon-wrapped concrete columns", Compos. B. Eng., 31(6-7), 471-480.
  39. Shehata, I.A.E.M., Carneiro, L.A.V. and Shehata, L.C.D. (2002), "Strength of short concrete columns confined with CFRP sheets", Mater. Struct., 35(1), 50-58. https://doi.org/10.1007/BF02482090
  40. Teng, J.G., Jiang, T., Lam, L. and Luo, Y.Z. (2009), "Refinement of a design-oriented stress-strain model for FRP-confined concrete", J. Compos. Constr., 13(4), 269-78. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000012
  41. Valdmanis, V., De Lorenzis, L., Rousakis, T. and Tepfers, R. (2007), "Behavior and capacity of CFRP-confined concrete cylinders sub-jected to monotonic and cyclic axial compressive load." Struct. Concrete, 8(4), 187-200. https://doi.org/10.1680/stco.2007.8.4.187
  42. Wang, L.M. and Wu, Y.F. (2008), "Effect of corner radius on the performance of CFRP-confined square concrete columns: test", Eng. Struct., 30(2), 493-505. https://doi.org/10.1016/j.engstruct.2007.04.016
  43. Watanable, K., Nakamura, H., Honda, T., Toyoshima, M., Iso, M., Fujimaki, T., Kaneto, M. and Shirai, N. (1997), "Confinement effect of FRP sheet on strength and ductility of concrete cylinders under uniaxial compression", Proceedings of the 3rd International Symposium on Non-metallic FRP Reinforcement for Concrete Structures, Japan Concrete Institute, Sapporo, Japan, pp. 233-240.
  44. Wu, Y.F. and Jiang, J.F. (2013), "Effective strain of FRP for confined cylindrical concrete columns", Compos. Struct., 95, 479-491. https://doi.org/10.1016/j.compstruct.2012.08.021
  45. Xiao, Y. and Wu, H. (2000), "Compressive behavior of concrete confined by carbon fiber composite jackets", J. Mater. Civil Eng., 12(2), 139-146. https://doi.org/10.1061/(ASCE)0899-1561(2000)12:2(139)
  46. Xiao, Q.G., Teng, J.G. and Yu, T. (2010), "Behavior and modeling of confined high-strength concrete", J. Compos. Constr., 249-259. DOI: 10.1061/(ASCE)CC.1943-5614.0000070
  47. Youssef, M.N. (2003), "Stress strain model for concrete confined by FRP composites", Doctoral Dissertation; University of California-Irvine, Irvine, CA, USA, 310 p.
  48. Youssef, M.N., Feng, M.Q. and Mosallam, A.S. (2007), "Stressstrain model for concrete confined by FRP composites", Compos. Part B., 38(5-6), 614-628. https://doi.org/10.1016/j.compositesb.2006.07.020
  49. Zhang, H.Y., Hao, X. and Fan, W. (2016), "Experimental study on high temperature properties of carbon fiber sheets strengthened concrete cylinders using geopolymer as adhesive", Proc. Eng., 135, 47-55.

피인용 문헌

  1. Strength and strain modeling of CFRP -confined concrete cylinders using ANNs vol.27, pp.3, 2018, https://doi.org/10.12989/cac.2021.27.3.225