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Advances in Materials Research
  Volume 7, Number 2, June 2018 , pages 83-103

Elastic analysis of interfacial stresses in prestressed PFGM-RC hybrid beams
Rabahi Abderezak, Benferhat Rabia, Tahar Hassaine Daouadji, Boussad Abbes, Adim Belkacem and Fazilay Abbes

    In this paper, the problem of interfacial stresses in damaged reinforced concrete beams strengthened with bonded prestressed functionally graded material plate and subjected to a uniformly distributed load, arbitrarily positioned single point load, or two symmetric point loads is developed using linear elastic theory. The adopted model takes into account the adherend shear deformations by assuming a linear shear stress through the depth of the damaged RC beam. This solution is intended for application to beams made of all kinds of materials bonded with a thin FGM plate. The results show that there exists a high concentration of both shear and normal stress at the ends of the functionally graded material plate, which might result in premature failure of the strengthening scheme at these locations. Finally, numerical comparisons between the existing solutions and the present new solution enable a clear appreciation of the effects of various parameters of the beams on the distributions of the interfacial stresses.
Key Words
    damaged concrete beam; prestressed plate; functionally graded material plate; interfacial stresses; strengthening
Rabahi Abderezak, Benferhat Rabia, Tahar Hassaine Daouadji:1Département de génie civil, Université Ibn Khaldoun Tiaret; BP 78 Zaaroura, Tiaret, Algérie.
2Laboratoire de Géomatique et Développement Durable, Université de Tiaret, Algérie.

Boussad Abbes,Fazilay Abbes: Laboratoire Grespi Campus du Moulin de la Housse, Reims Cedex 2, France
Adim Belkacem: Laboratoire de Géomatique et Développement Durable, Université de Tiaret, Algérie,
Département de technologies, Centre Universitaire Tissemsilt, Algérie

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