Steel and Composite Structures

  • 제41권5호
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  • Pages.637-648
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  • 2021
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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CFRP strengthening of steel beam curved in plan

  • Keykha, Amir Hamzeh (Department of Civil Engineering, Zahedan Branch, Islamic Azad University)
  • 투고 : 2019.12.14
  • 심사 : 2021.10.29
  • 발행 : 2021.12.10
⟨ 이전 논문 다음 논문 ⟩

초록

Nowadays, one of the practical, fast and easy ways to strengthen steel elements is the use of Carbon Fiber Reinforced Polymer (CFRP). Most previous research in the CFRP strengthening of steel members has carried out on straight steel members. The main difference between horizontal curved beams and straight beams under vertical load is the presence of torsional moment in the horizontal curved beams. In the other words, the horizontal curved beams are analyzed and designed for simultaneous internal forces included bending moment, torsional moment, and shear force. The horizontal curved steel beams are usually used in buildings, bridges, trusses, and others. This study explored the effect of the CFRP strengthening on the behavior of the horizontal curved square hollow section (SHS) steel beams. Four specimens were analyzed, one non-strengthened curved steel beam as a control column and three horizontal curved steel beams strengthened using CFRP sheets (under concentrated load and uniform distributed load). To analyze the horizontal curved steel beams, three dimensional (3D) modeling and nonlinear static analysis methods using ANSYS software were applied. The results indicated that application of CFRP sheets in some specific locations of the horizontal curved steel beams could increase the ultimate capacity of these beams, significantly. Also, the results indicated when the horizontal curved steel beams were under distributed load, the increase rate in the ultimate capacity was more than in the case when these beams were under concentrated load.

키워드

참고문헌

  1. Al Zand, A.W., Badaruzzaman, W.H.W., Mutalib, A.A. and Qahtan, A.H. (2015), "Finite element analysis of square CFST beam strengthened by CFRP composite material", Thin-Wall. Struct., 96, 348-358. https://doi.org/10.1016/j.tws.2015.08.019.
  2. Afnani, A., Erkmen, R.E. and Niki, V. (2017), "An efficient formulation for thin-walled beams curved in plan", International J. Steel Struct., 17(3), 1087-1102. https://doi.org/10.1007/s13296-017-9018-5.
  3. Awaludin, A. and Sari, D.P. (2015), "Numerical and experimental study on repaired steel beam using carbon fiber reinforced polymer", IABSE-JSCE Joint Conference on Advances in Bridge Engineering-III, Dhaka, Bangladesh. (This research is a conference article and has no DOI.), (https://www.researchgate.net/publication/293251324_Numerical_and_Experimental_Study_on_Repaired_Steel_Beams_using_Carbon_Fiber_Reinforced_Polymer).
  4. Barghi, M., Azadbakht, M. and Hadad, M. (2012), "Evaluating the ductility and shear behaviour of carbon fibre reinforced polymer and glass fibre reinforced polymer reinforced concrete columns", Struct. Des. Tall Spec. Build., 21(4), 249-264. https://doi.org/10.1002/tal.590.
  5. Devi, U. and Amanat, K.M. (2015), "Non-linear finite element investigation on the behavior of CFRP strengthened steel square HSS columns under compression", Int. J. Steel Struct,, 15(3), 671-680. https://doi.org/10.1007/s13296-015-9013-7.
  6. Erkmen, R.E. and Bradford, M.A. (2009) "Nonlinear elastic analysis of composite beams curved in-plan", Eng. Struct., 31(7), 1613-1624. https://doi.org/10.1016/j.engstruct.2009.02.016.
  7. Haedir, J., Bambach, M.R., Zhao, X.L. and Grzebieta, R.H. (2009), "Strength of circular hollow sections (CHS) tubular beams externally reinforced by carbon FRP sheets in pure bending", Thin-Wall. Struct., 47(10), 1136-1147. https://doi.org/10.1016/j.tws.2008.10.017
  8. Idris, Y. and Ozbakkaloglu, T. (2014), "Flexural behavior of FRPHSC-steel composite beams", Thin-Wall. Struct., 80, 207-216. https://doi.org/10.1016/j.tws.2014.03.011.
  9. Kabir, M.H., Fawzia, S., Chan, T.H.T., Gamage, J.C.P.H. and Bai, J.B. (2016), "Experimental and numerical investigation of the behaviour of CFRP strengthened CHS beams subjected to bending", Eng. Struct., 113, 160-173. https://doi.org/10.1016/j.engstruct.2016.01.047.
  10. Keykha, A.H., Nekooei, M. and Rahgozar, R. (2015), "Experimental and theoretical analysis of hollow steel columns strengthening by CFRP", Civil Eng. Dimension, 17(2), 101-107. https://doi.org/10.9744/ced.17.2.101-107.
  11. Keykha, A.H., Nekooei, M. and Rahgozar, R. (2016), "Analysis and strengthening of SHS steel columns using CFRP composite materials", Compos. Mech. Comput. Appl. Int. J., 7(4), 275-290. https://doi.org/10.1615/compmechcomputapplintj.v7.i4.20.
  12. Keykha, A.H. (2017a), "3D finite element analysis of deficient hollow steel beams strengthened using CFRP composite under torsional load", Compos. Mech. Comput. Appl. Int. J., 8(4), 287-297. https://doi.org/10.1615/CompMechComputApplIntJ.v8.i4.20.
  13. Keykha, A.H. (2017b), "CFRP strengthening of steel columns subjected to eccentric compression loading", Steel Compos. Struct., 23(1), 87-94. https://doi.org/10.12989/.2017.23.1.087.
  14. Keykha, A.H. (2017c), "Numerical investigation of SHS steel beam-columns strengthened using CFRP composite", Steel Compos. Struct., 25 (5), 593-601. https://doi.org/10.12989/scs.2017.25.5.593
  15. Keykha, A.H. (2017d). Numerical investigation on the behavior of SHS steel frames strengthened using CFRP. Steel Compos. Struct., 24(5), 561-568. https://doi.org/10.12989/scs.2017.24.5.561.
  16. Keykha, A.H. (2018a), "A numerical investigation on the structural behavior of deficient steel frames strengthened using CFRP composite", Civil Eng. Dimension, 20(1), 1-7. https://doi.org/10.9744/ced.20.1.1-7
  17. Keykha, A.H. (2018b), "Numerical investigation of continuous hollow steel beam strengthened using CFRP", Struct. Eng. Mech., 66(4), 439-444. https://doi.org/10.12989/sem.2018.66.4.439.
  18. Keykha, A.H. (2019a), "Assessment of structural behavior of vertical curved hollow steel beams strengthened using CFRP composite", Practice Periodical on Structural Design and Construction, 24(4), 04019021. https://doi.org/10.1061/(ASCE)SC.1943-5576.0000440.
  19. Keykha, A.H. (2019b), "Behavior of defective curved steel beams strengthened by a CFRP composite", Mech. Compos. Mater., 55 (4), 525-534. https://doi.org/10.1007/s11029-019-09831-y.
  20. Kim, H., Lee, K.H., Lee, Y.H. and Lee, J. (2012), "Axial behavior of concrete-filled carbon fiber-reinforced polymer composite columns", Struct. Des. Tall Spec. Build., 21(3), 178-193. https://doi.org/10.1002/tal.585.
  21. Nayak, C.B. (2021), "Experimental and numerical investigation on compressive and flexural behavior of structural steel tubular beams strengthened with AFRP composites", J. King Saud Univ.-Eng. Sci., 33(2), 88-94. https://doi.org/10.1016/j.jksues.2020.02.001.
  22. Rahai, A.R. and Saberi, M.R. (2011), "Experimental and numerical investigation of damaged concrete beams strengthened with FRP composed of different fibres and resins", Struct. Des. Tall Spec. Build., 20(8), 972-985. https://doi.org/10.1002/tal.570.
  23. Sundarraja, M.C. and Prabhu, G.G. (2013), "Flexural behaviour of CFST members strengthened using CFRP composites", Steel Compos. Struct., 15(6), 623-643. https://doi.org/10.12989/scs.2013.15.6.623.
  24. Teng, J.G., Fernando, D. and Yu, T. (2015), "Finite element modelling of debonding failures in steel beams flexurally strengthened with CFRP laminates", Eng. Struct., 86, 213-224. https://doi.org/10.1016/j.engstruct.2015.01.003