Behaviour of R C Wide Beams Using Headed Bars in Lap Splices

Ahmed M. Tarabia; Mohie S. Shoukry; Ahmed M. Yassin

doi:10.15866/irece.v4i4.6872

Behaviour of R C Wide Beams Using Headed Bars in Lap Splices

Ahmed M. Tarabia^(1*), Mohie S. Shoukry⁽²⁾, Ahmed M. Yassin⁽³⁾

^(*) Corresponding author

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DOI: https://doi.org/10.15866/irece.v4i4.6872

Abstract

The main objective of this paper is to study the behavior and strength of reinforced concrete wide beams with headed bar lap splice of tension steel reinforcement. An experimental program was conducted on eight simply supported concrete beams. The main studied variables were: lap splices length, spacing of vertical stirrups in the splice zone, and the cut-off ratio of the spliced bars. It was concluded that for the use of the lap splice length as that recommended by ACI 318-08, without the use of stirrups at the spliced zone, the change of the cut off ratio from 50% to 100% resulted in a brittle failure and a reduction in ductility. On the other hand, there is a drastic increase in ductility of beams when stirrups in the lap zone were used.
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Keywords

Concrete Beams; Headed Bars; Lap Splice; Ductility

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References

ECP 203-2007 “Egyptian Code for Design and Construction of Reinforced Concrete Structures (The Permanent committee for Egyptian code, 2007).

Eurocode 2 1992-1, “Design of Concrete Structures – part 1: General Rules and Rules for Buildings,” (European committee for standardization, 2001.)
http://dx.doi.org/10.3403/03221508

BS 8110: part 1:1997 "Structural Use of Concrete, Part 1.Code of Practice for Design and Construction," (British standard institution, 1997).

ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary,” (American Concrete Institute, Farmington Hills, MI, 2008, 465 pp
http://dx.doi.org/10.1061/(asce)1076-0431(1996)2:3(120.3)

CSA A23.3-04, “Design of Concrete Structures,” (Canadian Standards Association, December 2004).

Thompson, M. K., Young, M. J., Jirsa, J. O., Breen, J. E., and Klingner, R. E., “Anchorage of Headed Reinforcement in CCT Nodes,” Center for Transportation Research Report 1855-2, Austin, Texas, May 2002.

Thompson, M. K., Ledesma, A. L., Jirsa, J. O., Breen, J. E., and Klingner, R. E., “Anchorage of Headed Reinforcement in Lap Splices,” (Center for Transportation Research Report 1855-3, Austin, Texas, May 2002).

Chutarat, N., and Aboutaha, R. S. " Cyclic Response of Exterior Reinforced Concrete Beam-Column Joints Reinforced with Headed Bars - Experimental Investigation," ACI Structural Journal, V. 100, No. 2, March-April 2003, pp. 259-264.
http://dx.doi.org/10.14359/12490

Chun, S. C., and Kim, D. Y., “Evaluation of Mechanical Anchorage of Reinforcement by Exterior Beam-Column Joint Experiments,” Proceedings of 13th World Conference on Earthquake Engineering, Vancouver, BC, Canada, 2004. Paper No. 0326.

Seo, S. Y., Yoon, S. J., and Lee, W. J. “Structural Behavior of R/C Deep Beams with Headed Longitudinal Reinforcements,” Proceedings of 13th World Conference on Earthquake Engineering, Vancouver, BC, Canada, 2004. Paper No. 58.

Chun, S. C., Oh, B., Lee, S. H. and Naito, C. J., “Anchorage Strength and Behavior of Headed Bars in Exterior Beam-Column Joints,” ACI Structural Journal, V. 106, No. 5, September-October 2009, pp. 579-590.
http://dx.doi.org/10.14359/51663098

Kang, T. H., Ha, S. S., and Choi, D. U., “Bar Pullout Tests and Seismic Tests of Small-Headed Bars in Beam-Column Joints,” ACI Structural Journal, V. 107, No. 1, January-February 2010, pp. 32-42.
http://dx.doi.org/10.14359/51663386

Yassin, A. M., “Behavior of Reinforced Concrete Wide Beams Provided With Lap Splices Using Headed Bars,” M.Sc. thesis, Faculty of Engineering, Alexandria University, Alexandria, Egypt, 2013.

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