Elastic analysis of interfacial stresses in prestressedPFGM-RC hybrid beams
Rabahi Abderezak, Benferhat Rabia, T. H. Daouadji
Jun 1, 2018
Citations
13
Citations
Journal
Advances in materials research
Full text
Semantic Scholar
Key Takeaway Key Takeaway: Interfacial stresses in prestressed PFGM-RC hybrid beams can cause premature failure due to high concentrations of shear and normal stresses at the ends of the plate.
Abstract
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.