Steel and Composite Structures

  • 제10권3호
  • /
  • Pages.281-295
  • /
  • 2010
  • /
  • 1229-9367(pISSN)
  • /
  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Experimental and numerical analysis of composite beams strengthened by CFRP laminates in hogging moment region

  • El-Shihy, A.M. (Department of Structural Engineering, Faculty of Engineering, Zagazig University) ;
  • Fawzy, H.M. (Department of Structural Engineering, Faculty of Engineering, Zagazig University) ;
  • Mustafa, S.A. (Department of Structural Engineering, Faculty of Engineering, Zagazig University) ;
  • El-Zohairy, A.A. (Department of Structural Engineering, Faculty of Engineering, Zagazig University)
  • 투고 : 2009.12.14
  • 심사 : 2010.06.07
  • 발행 : 2010.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

An experimental and a non linear finite element investigation on the behavior of steel-concrete composite beams stiffened in hogging moment region with Carbon Fiber Reinforced Plastics (CFRP) sheets is presented in this paper. A total of five specimens were tested under two-point loads. Three of the composite beams included concrete slab while the other two beams had composite slabs. The stiffening was achieved by attaching CFRP sheets to the concrete surface at the position of negative bending moment. The suggested CFRP sheets arrangement enhanced the overall beam behavior and increased the composite beam capacity. Valuable parametric study was conducted using a three dimensional finite element model using ANSYS program. Both geometrical and material nonlinearity were included. The studied parameters included CFRP sheet arrangement, concrete strength and degree of shear connection.

키워드

참고문헌

  1. ANSYS Element Manual, Tenth Edition, Swanson Analysis System Inc.
  2. Ashour, A.F., El-Refaie, S.A. and Garrity, S.W. (2004), "Flexural strengthening of RC continuous beams using CFRP laminates", J. Cement. Concrete. Compos., 26, 765-775. https://doi.org/10.1016/j.cemconcomp.2003.07.002
  3. Bangash, M.Y.H. (1989), Numerical modeling and applications, Elsevier Science Publishers Ltd., London, England.
  4. British Standard Institution (1990), Structural use of steel work in building, Part 3, Section 3.1: Code of practice for design of composite beams, BS 5950, BSI, London.
  5. Buyukozturk, O., Gunes, O. and Karca, E. (2004), "Progress on understanding debonding problems in reinforced concrete and steel members strengthened using FRP composites", Constr. Build. Mat., 18(1), 9-19. https://doi.org/10.1016/S0950-0618(03)00094-1
  6. Donnet, J-P. and R.C. Bansal. (1990), Carbon fibers, Marcel Deckker, Inc., New York.
  7. Eurocode 4 (1992), Design of composite steel and concrete structures, Part 1.1: General rules and rules for buildings, Commission of the European communities.
  8. Gao, B., Leung, C.K.Y. and Kim, J.K. (2005), "Failure diagrams of FRP strengthened RC beams", J. Compos. Struct., 1-16.
  9. Gere, J.M. and Timoshenko, S.P. (1997), Mechanics of materials, PWS Publishing Company, Boston, Massachusetts.
  10. Gibson, R.F. (1994), Principles of composite material mechanics, McGraw-Hill, Inc., New York.
  11. Kaw, A.K. (1997), Mechanics of composite materials, CRC Press LLC, Boca Raton, Florida.
  12. Li, L.J., Guo, Y.C., Liu, F. and Bungey, J.H. (2006), "An experimental and numerical study of the effect of thickness and length of CFRP on performance of repaired reinforced concrete beams", J. Constr. Build. Mat., 20(10), 901-909. https://doi.org/10.1016/j.conbuildmat.2005.06.020
  13. Loh, H.Y., Uy, B. and Bradford, M.A. (2004), "The effect of partial shear connection in the hogging moment regions of composite beams. Part I-Experimental study", J. Constr. Steel. Res., 60(6), 897-919. https://doi.org/10.1016/j.jcsr.2003.10.007
  14. Loh, H.Y., Uy, B. and Bradford, M.A. (2004), "The effect of partial shear connection in the hogging moment regions of composite beams. Part II-Analytical study", J. Constr. Steel. Res., 60(6), 921-962. https://doi.org/10.1016/j.jcsr.2003.10.008
  15. Mertz, D.R. and Gillespie, J.W. (1996), "Rehabilitation of steel bridge girders through the application of advanced composites materials", Final Report, NCHRP-93-ID011, TRB. Washington, DC: National Research Council.
  16. Sen, R., Liby, L., Spillet, K. and Mullins, G. (1995), "Strengthening steel composite bridge members using CFRP laminates", Proceedings of the second international RILEM symposium on non-metallic (FRP) reinforcement for concrete structures, Ghent, Belgium.
  17. Sikadur-330 (2005), "Impregnation resin for fabric reinforcement", Version no. 01.03.
  18. Sikawrap Hex-230C, "Carbon fiber fabric strengthening system", Version no. 05.04.
  19. Teng, J.G. and Smith, S.T. (2002), "FRP-strengthened RC beams. II: assessment of debonding strength models", J. Eng. Struct., 24, 397-417. https://doi.org/10.1016/S0141-0296(01)00106-7
  20. Wipf, T.J., Saidy, A.H. and Klaiber, F. W. (2007), "Strengthening of steel concrete composite girders using carbon fiber reinforced polymer plates", Constr. Build. Mat., 21(2), 295-302. https://doi.org/10.1016/j.conbuildmat.2005.08.018

피인용 문헌

  1. Structural performance of composite double beam system vol.19, pp.2, 2016, https://doi.org/10.1177/1369433215624599
  2. Improving strength, stiffness and ductility of CFDST columns by external confinement vol.75, 2014, https://doi.org/10.1016/j.tws.2013.10.009
  3. Uni-axial behaviour of normal-strength concrete-filled-steel-tube columns with external confinement vol.3, pp.6, 2012, https://doi.org/10.12989/eas.2012.3.6.889
  4. Behavior of FRP bonded to steel under freeze thaw cycles vol.14, pp.1, 2010, https://doi.org/10.12989/scs.2013.14.1.041