Shear Strength of RC Beams Strengthened with Bonded Steel or FRP Plates
Publication: Journal of Structural Engineering
Volume 127, Issue 4
Abstract
Bonding by epoxy resins of metallic or nonmetallic plates to the tension face of a reinforced concrete (RC) member (i.e., plate bonding technology) is now a widely used technique to retrofit/upgrade existing RC structures that have been damaged or are structurally inadequate. To ensure successful and cost-effective applications, engineers must improve their knowledge of the actual behavior of these structures, especially with regard to the interaction mechanisms between concrete and the bonded plate. This paper presents a truss model capable of describing the ultimate behavior of externally bonded RC beams. The effectiveness of the proposed approach is validated by comparing the obtained numerical results with some experimental data that is available in the literature.
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References
1.
An, W., Saadatmanesh, H., and Ehsani, M. R. (1991). “RC beams strengthened with FRP plates. II: Analysis and parametric study.”J. Struct. Engrg., ASCE, 117(11), 3434–3455.
2.
Arduini, M., Di Tommaso, A., and Nanni, A. ( 1997). “Brittle failure in FRP plate and sheet bonded beams.” ACI Struct. J., 94(4), 363–370.
3.
Chajes, M. J., Finch, W. W., Januszka, T. F., and Thomson, T. A. ( 1996). “Bond and force transfer of composite material plates bonded to concrete.” ACI Struct. J., 93(2), 208–217.
4.
Chen, W. F. ( 1975). Limit analysis and soil plasticity, Elsevier Science, New York.
5.
Chen, W. F. ( 1979). “Constitutive equations for concrete.” Proc., IABSE Colloquium Copenhagen 1979, Plasticity in Reinforced Concrete, 11–34.
6.
David, E., Djelal, C., and Buyle-Bodin, F. ( 1997). “Repair and strengthening of reinforced concrete beams using composite materials.” Proc., 7th Int. Conf. on Struct. Faults and Repair, Vol. 2, 169–173.
7.
Fanning, P. ( 1997). “Experimental testing and numerical modelling of reinforced concrete beams strengthened using fibre reinforced composite materials.” Proc., 7th Int. Conf. on Struct. Faults and Repair, Vol. 2, 211–217.
8.
Hong, S. ( 1996). “Truss model for tension bars in reinforced concrete beams: Tension-tension-compression regions.” ACI Struct. J., 93(6), 729–738.
9.
Hsu, T. T. C. ( 1993). Unified theory of reinforced concrete, CRC, Boca Raton, Fla.
10.
Hussain, M., Sharif, A., Basunbul, I. A., Baluch, M. H., and Al-Sulaimani, G. J. ( 1995). “Flexural behavior of precracked reinforced concrete beams strengthened externally by steel plates.” ACI Struct. J., 92(1), 14–22.
11.
Hutchinson, A. R., and Rahimi, H. ( 1996). “Flexural strengthening of concrete beams with externally bonded FRP reinforcement.” Proc., 2nd Int. Conf. on Advanced Compos. Mat. in Bridges and Struct. (ACMBS), 519–526.
12.
Nanni, A. (1993). “Flexural behavior and design of RC members using FRP reinforcement.”J. Struct. Engrg., ASCE, 119(11), 3344–3359.
13.
Neubauer, U., and Rostasy, F. ( 1997). “Design aspects of concrete structures strengthened with externally bonded CFRP-plates.” Proc., 7th Int. Conf. on Struct. Faults and Repair, Vol. 2, 109–118.
14.
Nielsen, M. P. ( 1984). Limit analysis and concrete plasticity, Prentice-Hall, Englewood Cliffs, N.J.
15.
Nielsen, M. P., and Braestrup, M. W. ( 1975). “Plastic shear strength of reinforced concrete beams.”Bygningsstatiske Meddelelser, 46(3), 61–99.
16.
Quantrill, R. J., Hollaway, L. C., Thorne, A. M., and Parke, G. A. R. ( 1995). “Preliminary research on the strengthening of reinforced concrete beams using GFRP.” Proc., Non-Metallic (FRP) Reinforcement for Concrete Struct., RILEM, Paris, 541–550.
17.
Roberts, T. M. ( 1989). “Approximate analysis of shear and normal stress concentrations in the adhesive layer of plated RC beams.”The Struct. Engr., London, 67(12), 229–233.
18.
Spadea, G., Bencardino, F., and Swamy, R. N. (1998). “Structural behaviour of composite RC beams with externally bonded CFRP.”J. Compos. for Constr., ASCE, 2(3), 132–137.
19.
Spadea, G., Bencardino, F., and Swamy, R. N. ( 1997). “Strengthening and upgrading structures with bonded CFRP sheets: Design aspects for structural integrity.” Proc., 3rd Int. Symp. on Non-Metallic (FRP) Reinforcement for Concrete Struct., Vol. 1, 629–636.
20.
Swamy, R. N., Hobbs, B., and Roberts, M. ( 1995). “Structural behaviour of externally bonded steel plated reinforced concrete beams after long term natural exposure.”The Struct. Engr., London, 73(16), 255–261.
21.
Swamy, R. N., Jones, R., and Bloxhan, J. ( 1987). “Structural behaviour of reinforced concrete beams strengthened by epoxy-bonded steel plates.” The Struct. Engr., London, 65A(2), 59–68.
22.
Swamy, R. N., Jones, R., and Charif, A. ( 1986). “Shear adhesion properties of epoxy resin adhesive.” Proc., Int. Symp., 741–755.
23.
Varastehpour, H., and Hamelin, P. ( 1996a). “Experimental study of RC beams strengthened with CFRP plate.” Proc., 2nd Int. Conf. on Advanced Compos. Mat. in Bridges and Struct. (ACMBS), 555–563.
24.
Varastehpour, H., and Hamelin, P. ( 1996b). “Analysis and study of failure mechanism of RC beam strengthened with FRP plate.” Proc., 2nd Int. Conf. on Advanced Comp. Mat. in Bridges and Struct. (ACMBS), 527–536.
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Received: Mar 26, 1999
Published online: Apr 1, 2001
Published in print: Apr 2001
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