Structural Engineering and Mechanics

  • 제9권5호
  • /
  • Pages.491-504
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  • 2000
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Retrofitting by adhesive bonding steel plates to the sides of R.C. beams. Part 1: Debonding of plates due to flexure

  • Oehlers, Deric. J. (Department of Civil and Environmental Engineering, University of Adelaide) ;
  • Nguyen, Ninh T. (Department of Civil and Environmental Engineering, University of Adelaide) ;
  • Bradford, Mark A. (School of Civil Engineering, University of New South Wales)
  • 발행 : 2000.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

A convenient method for enhancing the strength and stiffness of existing reinforced concrete beams is to bond adhesively steel plates to their tension faces. However, there is a limit to the applicability of tension face plating as the tension face plates are prone to premature debonding and, furthermore, the addition of the plate reduces the ductility of the beam. An alternative approach to tension face plating is to bond adhesively steel plates to the sides of reinforced concrete beams, as side plates are less prone to debonding and can allow the beam to remain ductile. Debonding at the ends of the side plates due to flexural forces, that is flexural peeling, is studied in this paper. A fundamental mathematical model for flexural peeling is developed, which is calibrated experimentally to produce design rules for preventing premature debonding of the plate-ends due to flexural forces. In the companion paper, the effect of shear forces on flexural peeling is quantified to produce design rules that are applied to the strengthening and stiffening of continuous reinforced concrete beams.

키워드

참고문헌

  1. Nguyen, N.T. and Oehlers, D.J. (1997a), "A mathematical model for flexural peeling of side-plated glued beams", Dept. of Civil and Environmental Engng., University of Adelaide, Research Report R 143, Feb.
  2. Nguyen, N.T and Oehlers, D.J. (1997b), "Experimental investigation of flexural peeling of glued side-plated beams". Dept. of Civil and Environmental Engng., University of Adelaide, Research Report R 141, Feb.
  3. Nguyen, N.T. and Oehlers, D.J. (1997c), "Interaction curves for flexural and shear peeling of side-plated glued beams". Dept. of Civil and Environmental Engng., University of Adelaide, Research Report R 152, April.
  4. Oehlers, D.J. and Moran, J.P. (1990), "Premature failure of externally plated reinforced concrete beams". Journal of Structural Engineering, ASCE, 116(4), 978-995, April. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:4(978)
  5. Oehlers, D.J. (1992), "Reinforced concrete beams with plates glued to their soffits", Journal of Structural Engineering, ASCE, 118(8), Aug. 2023-2038. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:8(2023)
  6. Oehlers, D.J. (1995), "Rules for bonding steel plates to existing reinforced concrete slabs", Australian Civil Engineering Transactions, CE37(1), Feb., 15-20.
  7. Oehlers, D.J., Mohamed Ali, M.S. and Lou, W. (1998a), "Upgrading continuous reinforced concrete beams by gluing steel plates to their tension faces". Journal of Structural Engineering, ASCE, Mar., 124(3).
  8. Oehlers, D.J., Nguyen, N.T. and Bradford, M.A. (2000). "Retrofitting by adhesive bonding steel plates to the sides of R.C. beams", Structural Engineering and Mechanics, An Int'l Journal, 9(5).
  9. Ryder, G.H. (1974), Strength of Materials, Macmillan, London.
  10. Smith, S.T. and Bradford, M.A. (1995), "Ductility of reinforced concrete beams with side and soffit plates", Proceedings of the 14th Australasian Conference on the Mechanics of Structures and Materials, University of Tasmania, Hobart, Australia, Dec.
  11. Swamy, R.N., Jones, R. and Bloxham, J.W. (1987), "Structural behaviour of reinforced concrete beams strengthened by epoxy-bonded steel plates", The Structural Engineer, 65A(2), Feb., pp59-68.

피인용 문헌

  1. Assessment of the Predictive Performance of Existing Analytical Models for Debonding of Near-Surface Mounted FRP Strips vol.13, pp.2, 2010, https://doi.org/10.1260/1369-4332.13.2.299
  2. Comparison between FRP and steel plating of reinforced concrete beams vol.32, pp.9, 2001, https://doi.org/10.1016/S1359-835X(01)00088-4
  3. Generic non-linear modelling of a bi-material composite beam with partial shear interaction vol.44, pp.3, 2009, https://doi.org/10.1016/j.ijnonlinmec.2008.11.011
  4. A structural engineering approach to adhesive bonding longitudinal plates to RC beams and slabs vol.34, pp.9, 2003, https://doi.org/10.1016/S1359-835X(03)00153-2
  5. FRP Plates Adhesively Bonded to Reinforced Concrete Beams: Generic Debonding Mechanisms vol.9, pp.6, 2006, https://doi.org/10.1260/136943306779369482
  6. Investigation of critical diagonal crack debonding in plated RC beams vol.39, pp.3, 2008, https://doi.org/10.1016/j.compositesb.2007.02.021
  7. Seismic behavior of strengthened reinforced concrete coupling beams by bolted steel plates, Part 1: Experimental study vol.27, pp.2, 2007, https://doi.org/10.12989/sem.2007.27.2.149
  8. Retrofitting by adhesive bonding steel plates to the sides of R.C. beams. Part 2: Debonding of plates due to shear and design rules vol.9, pp.5, 2000, https://doi.org/10.12989/sem.2000.9.5.505
  9. Experimental study on flexural strength of modular composite profile beams vol.7, pp.1, 2000, https://doi.org/10.12989/scs.2007.7.1.071
  10. Experimental study on flexural strength of reinforced modular composite profiled beams vol.8, pp.4, 2000, https://doi.org/10.12989/scs.2008.8.4.313
  11. Study on behavior of T-section modular composite profiled beams vol.10, pp.5, 2000, https://doi.org/10.12989/scs.2010.10.5.457
  12. Debonding failure analysis of prestressed FRP strengthened RC beams vol.66, pp.4, 2000, https://doi.org/10.12989/sem.2018.66.4.543