Structural Engineering and Mechanics

  • 제43권5호
  • /
  • Pages.623-636
  • /
  • 2012
  • /
  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Behaviour of fiber reinforced concrete beams with spliced tension steel reinforcement

  • Safan, Mohamed A. (Civil Engineering Department, Faculty of Engineering, Menoufia University)
  • 투고 : 2011.12.26
  • 심사 : 2012.08.09
  • 발행 : 2012.09.10
⟨ 이전 논문 다음 논문 ⟩

초록

The aim of the current work is to describe the flexural behaviour of simply supported concrete beams with tension reinforcement spliced at mid-span. The parameters included in the study were the type of the concrete, the splice length and the configuration of the hooked splice. Fifteen beams were cast using an ordinary concrete mix and two fiber reinforced concrete mixes incorporating steel and polypropylene fibers. Each concrete mix was used to cast five beams with continuous, spliced and hooked spliced tension steel bars. A test beam was reinforced on the tension side with two 12 mm bars and the splice length was 20 and 40 times the bar diameter. The hooked bars were spliced along 20 times the bar diameter and provided with 45-degree and 90-degree hooks. The test results in terms of cracking and ultimate loads, cracking patterns, ductility, and failure modes are reported. The results demonstrated the consequences due to short splices and the improvement in the structural behaviour due to the use of hooks and the confinement provided by the steel and polypropylene fibers.

키워드

참고문헌

  1. ACI 408.3-01/408.3R-01 (2001), "Splice and development length of high relative rib area reinforcing bars in tension", ACI Committee 408, 6.
  2. ACI 544.1R-96 (2002), "Report on fiber reinforced concrete", ACI Committee 544, 66.
  3. ACI 408R-03 (2003), "Bond and development of straight reinforcing bars in tension", ACI Committee 408, 49.
  4. ACI 408.2R-92 (2005), "Bond under cyclic loads", ACI Committee 408, 32.
  5. ACI 407R-07 (2007), "Report on fiber-reinforced polymer (FRP) reinforcement for concrete structures", ACI Committee 440, 104.
  6. ACI 318R-08 (2008), "Building code requirements for structural concrete (318-08) and commentary", ACI Committee 318, 471.
  7. ASTM A820 "Standard Specification for Steel Fibers for Fiber-Reinforced Concrete", 4.
  8. Azizinamini, A., Stark, M., Roller, J. and Ghosh, S. (1993), "Bond performance of reinforcing bars embedded in high-strength concrete", ACI Struct. J., 90(5), 554-561.
  9. BS-EN 197-1 (2000), "Cement: composition, specifications, and conformity criteria for common cements", British Standards, 52.
  10. Bilal, S.H., Harajli, M.H. and Ghaida, J. (2001), "Effect of fiber reinforcement on bond strength of tension lap splices in high strength concrete", ACI Struct. J., 98(5), 638-647.
  11. Bilal, S.H., Soudki, K.A., Harajli, M.H. and Rteil, A. (2004), "Experimental and analytical evaluation of bond strength of reinforcement in fiber reinforced polymer-wrapped high strength concrete beams", ACI Struct. J., 101(6), 747-754.
  12. Bilal, S.H., Abou Haidar, E.Y. and Harahjli, M.H. (2011), "Effect of steel fibers on bond strength of hooked bars in normal strength concrete", ACI Struct. J., 108(1), 42-50.
  13. Darwin, D. and Graham, E.K. (1993), "Effect of deformation height and spacing on bond strength of reinforcing bars", ACI Struct. J., 90(6), 646-657.
  14. Esfahani, R. and Rangan, V. (1998), "Bond between normal strength and high-strength concrete (HSC) and reinforcing bars in splices in beams", ACI Struct. J., 95(3), 272-280.
  15. Ezeldin, A.S. and Balaguru, P.N. (1989), "Bond behavior of normal and high strength fiber concrete", ACI Mater. J., 86(5), 515-524.
  16. FIB (2000), "Bond of reinforcement in concrete", State-of-the-art Report, FIB Bulletin 10, Switzerland.
  17. Harajli, M.H., Hout, M. and Jalkh, W. (1995), "Local bond stress-slip behavior of reinforcing bars embedded in plain and fiber concrete", ACI Mater. J., 92(4), 343-354.
  18. Harajli, M.H. and Salloukh, K.A. (1997), "Effect of fibers on development/splice strength of reinforcing bars in tension", ACI Mater. J., 94(4), 317-324.
  19. Harajli, M.H., Bilal, S.H. and Rteil, A.A. (2004), "Effect of confinement on bond strength between steel bars and concrete", ACI Struct. J., 101(5), 595-603.
  20. Harahjli, M.H. (2005), "Bond strengthening of steel bars using external FRP confinement: Implications on the static and cyclic response of RC members", ACI Special Publication, 230, 579-596.
  21. Harajli, M.H. (2006), "Effect of confinement using steel, FRC, or FRP on the bond stress-slip response of steel bars under cyclic loading", Mater. Struct., 39, 621-634.
  22. Leung, H.Y. (2003), "Flexural performance of concrete beam splices with different surrounding concretes", Struct. Survey, 21(5), 216-224. https://doi.org/10.1108/02630800310511550
  23. Mehmet, K., Turk, K. and Zulfu, C.U. (2010) "Investigation of bond between lap-spliced steel bar and selfcompacting concrete: the role of silica fume", Can. J. Civ. Eng., 37, 420-428. https://doi.org/10.1139/L09-159
  24. Pimanmas, A. and Thai, D.X. (2011), "Response of lap splice of reinforcing bars confined by FRP wrapping: application to nonlinear analysis of RC column", Struct. Eng. Mech., 37(1), 111-129. https://doi.org/10.12989/sem.2011.37.1.111
  25. Soroushian, P., Mirza, F. and Alhozaimy, A. (1994), "Bonding of confined steel fiber reinforced concrete to deformed bars", ACI Mater. J., 91(2), 141-149.
  26. Turk, K. (2003), "Bond strength of reinforcement in splices in beams", Struct. Eng. Mech., 16(4), 1-9. https://doi.org/10.12989/sem.2003.16.1.001
  27. Turk, K., Caliskan, S. and Yildirim, M.S. (2005), "Influence of loading condition and reinforcement size on the concrete/reinforcement bond strength", Struct. Eng. Mech., 19(3), 337-346. https://doi.org/10.12989/sem.2005.19.3.337
  28. Thai, D.X. and Pimanmas, A. (2011), "Response of lap splice of reinforcing bars confined by FRP wrapping: modelling approach", Struct. Eng. Mech., 37(1), 95-110. https://doi.org/10.12989/sem.2011.37.1.095
  29. Zuo, J. and Darwin, D. (2000), "Splice strength of conventional and high relative rib area bars and high strength concrete", ACI Struct. J., 97(4), 630-641.

피인용 문헌

  1. Experimental study of the tensile and flexural mechanical properties of directionally distributed steel fibre-reinforced concrete pp.2041-3076, 2018, https://doi.org/10.1177/1464420718782555
  2. Impact resistance of polypropylene fiber reinforced concrete two-way slabs vol.62, pp.3, 2017, https://doi.org/10.12989/sem.2017.62.3.373
  3. Performance Evaluation of Metallic and Synthetic Fiber Hybridization on the Cyclic Behavior of Exterior Beam-Column Joint vol.7, pp.1, 2012, https://doi.org/10.1520/acem20170137
  4. Experimental and numerical studies on flexural behavior of high strength concrete beams containing waste glass vol.11, pp.3, 2012, https://doi.org/10.12989/acc.2021.11.3.239