Reinforced Concrete Beams with Plates Glued to their Soffits
Publication: Journal of Structural Engineering
Volume 118, Issue 8
Abstract
Reinforced concrete beams can be strengthened and stiffened by gluing steel plates to the tension face of the beam. However, experimental tests show that shear and flexural forces can cause these externally bonded plates to peel away before the design load is reached. In this paper, peeling due to shear forces and the interaction between shear peeling and flexural peeling is studied, and the results are used to formulate a design procedure to prevent debonding due to peeling for reinforced concrete beams that have been strengthened or stiffened by gluing steel plates to their soffits. It is shown that this system is better suited for the strengthening of reinforced concrete slabs than reinforced concrete beams, although it enhances the serviceability requirements of both types of structures.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Australian Standard 3600–1988 Concrete Structures. (1988). Standards Association of Australia, Sydney, New South Wales, Australia.
2.
Johnson, R. P., and Tait, C. J. (1981). “The strength in combined bending and tension of concrete beams with externally bonded reinforcing plates.” Build. Envir., 16(4), 287–299.
3.
Jones, R., Swamy, R. N., and Charif, A. (1988). “Plate separation and anchorage of reinforced concrete beams strengthened by epoxy‐bonded steel plates.” Struct. Engr., 66(5), 85–94.
4.
Mattock, A. H., and Hawkins, N. M. (1972). “Shear transfer in reinforced concrete—recent research.” PCI J., (Mar.‐Apr.), 55–73.
5.
Oehlers, D. J., and Moran, J. P. (1990). “Premature failure of externally plated reinforced concrete beams.” J. Struct. Engrg., ASCE, 116(4), 978–995.
6.
Ong, K. C. G., and Cusens, A. R. (1982). “Flexural tests of steel‐concrete open sandwiches.” Mag. Concr. Res., 34(102), 130–138.
7.
Parkinson, J. (1978). “Glue solves a sticky problem for Gestetner.” New Civ. Engrg., 310(Sept), 26–27.
8.
Roberts, T. M., and Haji‐Kazemi, H. (1989). “Theoretical study of the behaviour of reinforced concrete beams strengthened by externally bonded steel plates,” Proc., Inst. Civ. Engrs., Part 2, 87, 39–55.
9.
Van Gemert, D. A. (1981). “Repairing of concrete structures by externally bonded steel plates.” Proc., ICP/RILEM/IBK Int. Symp. on Plastics in Mat. and Struct. Engrg., Prague, Czechoslovakia, 519–526.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 118 • Issue 8 • August 1992
Pages: 2023 - 2038
Copyright
Copyright © 1992 ASCE.
History
Published online: Aug 1, 1992
Published in print: Aug 1992
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.