ANALYTICAL STUDY OF THE SECTION OF THE RC BEAMS STRENGTHENED FOR FLEXURE WITH FRP MATERIALS

Žarko Petrović, Slobodan Ranković, Marina Mijalković, Bojan Milošević

DOI Number
https://doi.org/10.2298/FUACE210719003P
First page
015
Last page
030

Abstract


Strengthening of concrete structures is applied as a solution for various deterioration problems in civil engineering practice. This paper presents an analytical study of the behaviour of cross-section of reinforced concrete (RC) beam, strengthened for flexure with fiber reinforced polymer (FRP) materials. Using the balance of internal forces in the cross section through all phases of stress through which the section passes, a program was written in the MATLAB software, the execution of which produced a curve of dependence between bending moment and curvature, which is one of the most important indicators of cross section behaviour. The parameters varied in this study are the amount and type of FRP reinforcement and the obtained results indicate a significant influence of additional FRP reinforcement both on the yielding and ultimate bending moment, and on the bending stiffness of the strengthened cross section.

Keywords

reinforced concrete beams, cross-section analysis, fiber reinforced polymer materials, strengthening

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References


Fib, Bulletin.14 (Task Group 9.3). Externally Bonded FRP Reinforcement for RC Structures. Technical Report on the Design and Use of Externally Bonded Fiber Reinforced Polymer Reinforcement (FRP EBR) for Reinforced Concrete Structures; International Federation for Structural Concrete: Lausanne, Switzerland, 2001.

Bilotta, A.; Ceroni, F.; di Ludovico, M.; Nigro, E.; Pecce, M.; Manfredi, G. Bond efficiency of EBR and NSM systems for strengthening concrete members. J. Compos. Constr. 2011, 15, 757–772.

ISIS Educational Module 2. An Introduction to FRP Composites for Construction; A Canadian Network of Centres of Excellence: Ottawa, ON, Canada, 2006.

Ranković, S. Experimental and Theoretical Analysis of Limit State RC Linear Plane Structures Strengthened with NSM FRP Elements; Doctoral Dissertation, Faculty of Civil Engineering and Architecture, University of Niš: Niš, Serbia, 2011; p. 177.

Rahman, M.M.; Jumaat, M.Z. The Effect of CFRP Laminate Length for Strengthening the Tension Zone of the Reinforced Concrete T-Beam. J. Sci. Res. Rep. 2013, 2, 626–640.

Wang, X.; Zhou, C. Numerical investigation for the flexural strengthening of reinforced concrete beams with external pre-stressed HFRP sheets. Constr. Build. Mater. 2018, 804–815, doi:10.1016/j.conbuildmat.2018.08.219.

13. Zhang, C.; Wang, J. Viscoelastic analysis of FRP strengthened reinforced concrete beams. Compos. Struct. 2011, 93, 3200–3208, doi:10.1016/j.compstruct.2011.06.006.

Vasseur, L., Matthys, S. and Taerwe, L. (2006). Analytical study of a 2-span reinforced concrete beam strengthened with fibre reinforced polymer. IABSE Symposium Report, 92(10), pp.39-46.

Akbarzadeh, H. and Maghsoudi, A. (2010). Experimental and analytical investigation of reinforced high strength concrete continuous beams strengthened with fiber reinforced polymer. Materials & Design, 31(3), pp.1130- 1147.

Teng, J. G., Zhang, J. W. and Smith, S. T. (2002). Interfacial Stresses in Reinforced Concrete Beams Bonded with a Soffit Plate: a Finite Element Study. Construction and Building Materials, 16(1), pp. 1-14

Bank, L. (2006). Composites for construction. Hoboken, N.J.: John Wiley & Sons.

Collins, M. P., and Mitchell, D. (1987). Prestressed concrete basics, Canadian Prestressed Concrete Institute (CPCI), Ottawa.

Badawai, M. (2007). Monotonic and Fatigue Flexural Behaviour of RC Beams Strengthened with prestressed NSM CFRP Rods. PhD thesis. University of Waterloo, Waterloo, Ontario, Canada.

(ISIS, 2004 - adapted for NSM strengthening method)

Bajić, N. (1985). Prilog nelinearnoj analizi armiranobetonskih elemenata. Doktorska disertacija. Građevinski fakultet, Beograd.

Petrović, Ž. Experimental—Theoretical Analysis of Limit States of Continuous Beams Made of Self-Compacting Concrete Strengthened with Fiber Reinforced Polymer (FRP). Ph.D. Thesis, University of Niš, Niš, Serbia, 2016; p. 247.

G. Eason, B. Noble and I. N. Sneddon, "On certain integrals of Lipschitz-Hankel type involving products of Bessel functions", Phil. Trans. Roy. Soc. London, vol. A247, pp. 529-551, April 1955.

J. C. Maxwell, A Treatise on Electricity and Magnetism, 3rd ed., vol. 2. Oxford: Clarendon, 1892, pp. 68-73.

L. S. Jacobs and C. P. Bean, "Fine particles, thin films and exchange anisotrophy", in Magnetism, vol. III, G.T. Rado and H. Suhl, Eds. New York: Academic, 1963, pp 271-350.

K. Elissa, "Title of paper if known", unpublished.

R. Nicole, "Title of paper with only first word capitalized", J. Name Stand. Abbrev., in press.

Y. Yorozu, M. Hirano, K. Oka and Y. Tagawa, "Electronic spectroscopy studies on megneto-optical media and plastic substrate interface", IEEE Transl. J. Magn. Japan, vol. 2, pp.740-741, August 1987 (Digests 9th Annual Conf. Magnetics Japan, p. 301, 1982).

M. Young, The Technical Writer's Handbook, Mill Valley, CA: University Science, 1989.

W. A. Sabin, The Gregg Reference Manual, 6th ed., Gregg Division, McGraw-Hill, New York, 1985.

The University of Chicago Press, The Chicago Manual of Style, 13th ed. Univ. of Chicago Press, 1982.

E. R. Tufte, The Visual Display of Quantitative Information, Graphics Press, Cheshire, Connecticut, 1983.


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