Treatment of Anchorage of Main Bars in Reinforced Concrete by Codes of Practice -A Critical Review (Part One: Straight Bar Anchorages)

Authors

  • Rizgar Amin Agha University of Sulaimani

Keywords:

straight anchorage, bond stress, anchorage length, concrete strength, concrete cover, transverse reinforcement, transverse pressure

Abstract

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.

Author Biography

  • Rizgar Amin Agha, University of Sulaimani
    Faculty of Engineering

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

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Published

2014-08-15

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How to Cite

Treatment of Anchorage of Main Bars in Reinforced Concrete by Codes of Practice -A Critical Review (Part One: Straight Bar Anchorages). (2014). Asian Journal of Applied Sciences, 2(4). https://ajouronline.com/index.php/AJAS/article/view/1607

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