Interfacial Shear Stress Calculation of Concrete Beams Strengthened with FRP Plate Based on Energy Theory

Abstract:

The collaborative work between FRP plate and concrete is achieved through the binder, so the interface of them is the weak links. Under external loading, the relative slip occurred on the interface between FRP plate and concrete causes the redistribution of stress and then the bearing capacity of the member will be reduced. Especially the FRP plate is a kind of resin material and its physical and mechanical properties will change with temperature and time. Based on energy variation principle, the differential equations of interfacial shear stress meanwhile to considering temperature and creep effect of concrete beams strengthened with FRP plate are established, in which the strain-energy of concrete beam, FRP plate and glue layer are calculated. And the calculated formulas of interfacial shear stress for a single point load are given.

• Periodical: Applied Mechanics and Materials (Volumes 501-504)
• Pages: 736-739
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.501-504.736
• Online since: January 2014
• Authors: Jia Yang, Lian Guang Wang, Wen Yu Hou
• Keywords: Concrete Beam, Energy Theory, FRP Plate, Interfacial Shear Stress

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