Renforcement des poutres FGM par des plaques FRP (Cas d’imperfection de la poutre)
Résumé
This work presents a method for determining the elastic shear and peel stresses in an adhesive joint between a strengthening plate and functionally graded beam (FGB). The beam is assumed to be isotropic with a constant Poisson’s ratio and exponentially-varying elastic modulus through the beam thickness. The effect of physical imperfection was introduced through a coefficient α which tends to reduce the value of Young modulus of beam FG. An analytical solution is proposed on the basic beam theory; several numerical examples are presented and discussed emphasizing the effect of different parameter governing the evolution of the interface stress. Keywords: Adhesive stress – FGB Beam – StrengtheningRéférences
[1] Caractérisation expérimentale et modélisation de la fissuration dans une poutre en béton armé réparée par matériaux composite. Compte rendu des 13ème journées nationales sur les composites, vol.1, 2003, p.193-204 [2] Propagation d’ondes élastiques au sein d’un guide d’ondes élastiques anisotrope à gradient unidirectionnel sous chargement fluide, Compte Rendue Mécanique ; 336 (9) : 722– 730, 2008. [3] A. TOUNSI, S.A. MEFTAH, E.A. ADDA BEDIA .Approximate analysis of the interfacial stress concentrations in FRP – RC hybrid beams. Composite Interfaces, 2006; 13(7): 561 – 571 [4] Analyse des contraintes d’interface dans les poutres renforcées par des plaques composites collées sous précontrainte, thèse de doctorat LM§H [5] A. TOUNSI, SA. MEFTAH EA. ADDA BEDIA. Creep and Shrinkage Effect on Adhesive Stresses in RC Beams Strengthened with Composite Laminates.Composites Sciences and Technology 2007; 67: 933 – 942 [6] Hussain M, Sharif A, Basunbul I, Balluch M.H et Al Sulaimani G.J., “Flexural behaviour of precracked reinforced concrete beams strengthened externally gy steel plates”. ACI Structural Journal, 92 (1), 14-22, 1995. [7] Johnson R.P and Tait C.J., “The strength in combined bending and tension of concrete beams with externally bonded reinforcing plates”. Building and Environment, 16 (4), 287- 299, 1981 [8] Interfacial stresses in RC beams bonded with a soffit plate: A finite element study. Construction and Building Materials 2002;16(1):1–14. [9] Interfacial stresses in externally FRP plated concrete beams. Int. J. of Adhesion & Adhesives, 2007; 27: 207 – 215 [10] Improved theoretical solution for interfacial stresses in concrete beams strengthened with FRP plate.” Inter J Solids and Structures 2006; 43:4154 –74.
Publiée
2016-10-01
Comment citer
BOURADA, Fouad; AMARA, Khaled; BOURADA, Mohamed.
Renforcement des poutres FGM par des plaques FRP (Cas d’imperfection de la poutre).
Science des matériaux (Laboratoire LARHYSS), [S.l.], v. 7, oct. 2016.
ISSN 2352-9954.
Disponible à l'adresse : >https://revues.univ-biskra.dz/index.php/sdm/article/view/1821>. Date de consultation : 22 déc. 2024
Rubrique
Articles