Treatment of Anchorage of Main Bars in Reinforced Concrete by Codes of Practice -A Critical Review (Part One: Straight Bar Anchorages)
Keywords:
straight anchorage, bond stress, anchorage length, concrete strength, concrete cover, transverse reinforcement, transverse pressureAbstract
This paper compares important provisions and parameters related to anchorage of straight bars in reinforced concrete of BS8110, EC2 and ACI-318 as well as empirical equations by by Orangun et al , Darwin et al. and Batayneh are also considered in a parametric study.
The study investigates the parameters which have influences on the bond and anchorage as there are some of them have not been considered by all of them and found their significance in obtaining more accurate bond resistance like transverse pressure, transverse reinforcement, the yield strength of the transverse reinforcement, bar geometry, anchorage length, concrete cover and transverse pressure.
A parametric study and test results from literature are used in demonstrating the treatments by them and significant commentaries are given.
References
BS8110 Structural use of concrete, Part 1, Code of practice for design and construction,
British Standards Institution, London 2005.
EuroCode 2: Design of Concrete Structures - Part 1-1: General rules and rules for
buildings. BS EN 1992-1-1: 2004, British Standards Institution London, Dec.2004
ACI 318M-05, Building code requirements for structural concrete, American Concrete
Institute, Farmington Hills. MI. 2005.
Orangun C.O., Jirsa J.O. and Breen J.E., A re-evaluation of test data on development
length and splices, Journal of American Concrete Institute. Proceedings, Vol.74 No.3,
March. 1977, pp 114-122.
Darwin D., Zuo J., Tholen M. L. and Idun E.K., Development length criteria for
conventional and high relative rib area reinforcing bars, ACI Structural Journal,
Vol.193 No.3, May June 1996, pp 347-359.
Batayneh.M.K., The effects of lateral compression on bond between deformed
reinforcing bars and concrete. Ph.D thesis. Oxford Brookes University. 1993.
Andreasen B.S. , Anchorage of ribbed reinforcing bars, Report R238, Dept. of
Structural Engineering, Technical University of Denmark, Lyngby, 1989.
Nielsen M.P., Limit analysis and concrete plasticity.2nd edition, CRC Press LLC.USA.
Tepfers.R., A theory of bond applied to overlapped tensile reinforcement splices for
deformed bars. Publication 73.2, Division of Concrete Structures, Chalmers Tekniska
Hogskola, Goteborg. 1973.
Morita S. and Fujii S., Bond capacity of deformed bars due to splitting of surrounding
concrete . Proceedings of the International Conference on Bond in Concrete. Paisley.
Scotland. June. Applied Science Publishers, London. 1982 , pp 331-341.
Jensen J.H, Forkammede armeringsstaengers forankring , specielt ved vederlag,
Reports R155 and 156, Dept. of Structural Engineering, Technical University of
Denmark, Lyngby, 1982.
Magnusson J., Bond and anchorage of ribbed bars in high-strength concrete, Ph.D
thesis, Dept. of Structural Engineering , Chalmers University of Technology, Goteborg,
Sweden, 2000.
Shin S.W. and Choi J.S., Bond characteristics of reinforcing bars embedded in high
strength concrete , proceedings 4th International Symposium on Utilization of High –
Strength/ High performance Concrete, Paris 1996, pp 1185-1193.
Untrauer R.E. and Henry R. L., Influence of normal pressure on bond strength.
Journal of American Concrete Institute. Proceedings, Vol.62, No.5. May 1965, pp 577-
Maeda M.,Otani S. and Aoyama H., Bond splitting strength in reinforced concrete
members, Transactions of the Japan Concrete Institute, V13,1991, pp 581-588.
Sakurada T., Morohashi N. and Tanaka R., Effect of transverse reinforcement on bond
splitting strength of lap splices, Transactions of the Japan Concrete Institute,V15,1993,
pp 573-580.
Azizinamini A., Chisata M. and Gosh S.K., Tension development length of reinforcing
bars embedded in high-strength concrete, Engineering Structures V17, No.7,1995.
pp512-522
Cleland D.J, Cummings S.J, Rankin G.I.B , Taylor S and Scott R.H. Influence
of reinforcement anchorage on the bending and shear capacity of bridge decks, The
Structural Engineer, Vol.79 No.16, August 2001, pp24-31.
Cairns J. and Jones K, Influence of rib geometry on strength of lapped joints:
an experimental and analytical study, Magazine of Concrete Research, Vol 47
No 172, Sept.1995. pp 253-262.
Hamad B.S., Bond strength improvement of reinforcing bars with specially designed rib
geometries, ACI Structural Journal, Vol. 92, No.1, January-February.1995, pp 3-13.
Darwin D.,Tholen M.L., Idun E.K. and Zuo J., Splice strength of high relative rib area
reinforcing bars, ACI Structural Journal, Vol. 93 ,No.1, January-February. 1996, pp
-107.
Mylrea T.D., The carrying capacity of semi-circular hooks, ACI Journal, Proceedings
Vol.24, 1928, pp 240-272
Downloads
Published
Issue
Section
License
Copyright © The Author(s). This article is published under the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
