Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Analysis of rectangular hybrid steel-GFRP reinforced concrete beam columns

  • El-Heloua, Rafic G. (Civil and Environmental Engineering, Syracuse University) ;
  • Aboutaha, Riyad S. (Civil and Environmental Engineering, Syracuse University)
  • Received : 2014.08.01
  • Accepted : 2015.07.16
  • Published : 2015.08.25
⟨ Previous Next ⟩

Abstract

In this study, nominal moment-axial load interaction diagrams, moment-curvature relationships, and ductility of rectangular hybrid beam-column concrete sections are analyzed using the modified Hognestad concrete model. The hybrid columns are primarily reinforced with steel bars with additional Glass Fiber Reinforced Polymer (GFRP) control bars. Parameters investigated include amount, pattern, location, and material properties of concrete, steel, and GFRP. The study was implemented using a user defined comprehensive $MATLAB^{(R)}$ simulation model to find an efficient hybrid section design maximizing strength and ductility. Generating lower bond stresses than steel bars at the concrete interface, auxiliary GFRP bars minimize damage in the concrete core of beam-column sections. Their usage prevents excessive yielding of the core longitudinal bars during frequent moderate cyclic deformations, which leads to significant damage in the foundations of bridges or beam-column spliced sections where repair is difficult and expensive. Analytical results from this study shows that hybrid steel-GFRP composite concrete sections where GFRP is used as auxiliary bars show adequate ductility with a significant increase in strength. Results also compare different design parameters reaching a number of design recommendations for the proposed hybrid section.

Keywords

References

  1. AASHTO (2012), "AASHTO-LRFD Bridge Design Specifications", American Association of State Highway and Transportation Officials, Sixth Edition, Washington DC.
  2. Aboutaha, R.S. (2005). "Investigation of mechanical properties of $ComBAR^{(R)}$", Sponsored Research Report, Syracuse University, Syracuse, NY, USA.
  3. Aboutaha, R.S., El-Helou, R.G. and Shraideh, M.S. (2011), "Guide for the use of $ComBAR^{(R)}$ Control Rebars for Relocating Plastic Hinge Regions in Steel Reinforced Concrete Bridge Columns", Sponsored Research Report, Syracuse University, Syracuse, NY, USA.
  4. Aboutaha, R.S., El-Helou, R.G. and Shraideh, M.S., (2012), "Seismic Control of Plastic Mechanism of Steel Reinforced Concrete Columns by the Use of GFRP Bars", The Third Asia-Pacific Conference on FRP in Structures (APFIS 2012), The University of Hokkaido, Sapporo, Hokkaido, Japan.
  5. American Concrete Institute (ACI) (2006), "Guide for the design and construction of structural concrete reinforced with FRP bars", ACI 440.1R-06., Detroit.
  6. Ang, B.G., Priestley, M.J.N. and Paulay, T. (1989), "Seismic shear strength of circular reinforced concrete columns", ACI. Struct. J., 86(1), 45-59.
  7. Baena, M., Torres, L., Albert, T. and Barris, C. (2009), "Experimental study of bond behavior between concrete and FRP bars using a pull-out test", Compo. Part. B - Eng., 40(8), 784-797.
  8. Chen, R.H.L., Choi, J.H., GangaRao, H.V. and Kopac, P.A. (2008). "Steel versus GFRP rebars?", Federal Highway Administration, 72(2), FHWA-HRT-08-006.
  9. Ehsani, M.R., Saadatmanesh, H. and Tao, S. (1996), "Design recommendations for bond of GFRP rebars to concrete", J. Struct. Eng. - ASCE, 122(3), 247-254. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:3(247)
  10. El-Helou, R.G. (2012), "Analysis of Rectangular Hybrid Steel-GFRP Reinforced Concrete Bridge Columns", Master's Thesis, Syracuse University, Syracuse, NY, USA.
  11. Harajli, M. and Abouniaj, M. (2010), "Bond performance of GFRP bars in tension: experimental evaluation and assessment of ACI 440 guidelines", J. Compos. Constr., 14(6), 659-668. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000139
  12. Hose, Y., Seible, F. and Priestley, M.J. (1997), "Strategic Relocation of Plastic Hinges in Bridge Columns", Report No. SSRP-97/05, University of California San Diego.
  13. Malvar, J.L. (1995), "Tensile and bond properties of GFRP Reinforcing Bars", ACI. Struct. J., 92(3), 276-285.
  14. MATLAB(C) (2011) by MathWorks, http://www.mathworks.com/products/matlab/
  15. Newman, N., Ayoub, A. and Belarbi, A. (2010), "Development length of straight FRP composite bars embedded in concrete", J. Reinf. Plast. Comp., 29, 571-589. https://doi.org/10.1177/0731684408100262
  16. Okelo, R. and Yuan, R. (2005), "Bond strength of fiber reinforced polymer rebars in normal strength concrete", J. Compos. Constr., 9(3), 203-213. https://doi.org/10.1061/(ASCE)1090-0268(2005)9:3(203)
  17. Olivia, M. and Parthasarathi, M. (2005), "Curvature ductility of reinforced concrete beam", Teknik. Sipil., 6(1), 1-13.
  18. Park, R. and Pauley, T. (1975), "Reinforced Concrete Structures", John Wiley & Sons., Canada
  19. Park, R. and Ruitong, D. (1988), "Ductility of doubly reinforced concrete beam", ACI. Struct. J., 85, 217-225.
  20. Pauley, T. and Priestley, M.J.N. (1988), "Seismic Design of Reinforced Concrete and Masonry Building", John Wiley and Sons. Inc., New York, NY, USA.
  21. Pecce, M., Manfredi, G., Realfonzo, R. and Cosenza, E. (2001), "Experimental and analytical evaluation of bond properties of GFRP bars", J. Mater. Civil. Eng., 13(4), 282-290. https://doi.org/10.1061/(ASCE)0899-1561(2001)13:4(282)
  22. Smith, P.E. (1996), "Strategic Relocation of Plastic Hinges in Bridge Columns", Master's Thesis, The University of California San Diego, San Diego, CA, USA.
  23. Soong, W.H., Raghavan, J. and Rizkalla, S.H. (2010), "Fundamental mechanisms of bonding of glass fiber reinforced polymer reinforcement to concrete", Constr. Build. Mater., 25(6), 2813-2821. https://doi.org/10.1016/j.conbuildmat.2010.12.054
  24. Tighiouart, B., Benmokrane, B. and Gao, D. (1998), "Investigation of bond in concrete member with fibre reinforced polymer (FRP) bars", Constr. Build. Mater., 12(8), 453-462. https://doi.org/10.1016/S0950-0618(98)00027-0
  25. Toutanji, H.A. and Saafi, M. (2000), "Flexural behavior of concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars", ACI. Struct. J., 97(72), 712-719.

Cited by

  1. Flexural performance of FRP-reinforced concrete encased steel composite beams vol.59, pp.4, 2016, https://doi.org/10.12989/sem.2016.59.4.775
  2. Buckling of concrete columns retrofitted with Nano-Fiber Reinforced Polymer (NFRP) vol.18, pp.5, 2016, https://doi.org/10.12989/cac.2016.18.5.1053
  3. Buckling analysis of embedded concrete columns armed with carbon nanotubes vol.17, pp.5, 2016, https://doi.org/10.12989/cac.2016.17.5.567
  4. Weight minimum design of concrete beam strengthened with glass fiber reinforced polymer bar using genetic algorithm vol.19, pp.2, 2017, https://doi.org/10.12989/cac.2017.19.2.127
  5. Vibration analysis of silica nanoparticles-reinforced concrete beams considering agglomeration effects vol.19, pp.3, 2015, https://doi.org/10.12989/cac.2017.19.3.333
  6. Seismic response of concrete columns with nanofiber reinforced polymer layer vol.20, pp.3, 2015, https://doi.org/10.12989/cac.2017.20.3.361
  7. Dynamic stress, strain and deflection analysis of pipes conveying nanofluid buried in the soil medium considering damping effects subjected to earthquake load vol.24, pp.5, 2015, https://doi.org/10.12989/cac.2019.24.5.445