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http://dx.doi.org/10.12989/sem.2021.78.5.573

Impact of thermal effects in FRP-RC hybrid cantilever beams  

Tahar, Hassaine Daouadji (Civil Engineering Department, University of Tiaret)
Abderezak, Rabahi (Civil Engineering Department, University of Tiaret)
Rabia, Benferhat (Civil Engineering Department, University of Tiaret)
Tounsi, Abdelouahed (YFL (Yonsei Frontier Lab), Yonsei University)
Publication Information
Structural Engineering and Mechanics / v.78, no.5, 2021 , pp. 573-583 More about this Journal
Abstract
This paper presents a theoretical approach of the structures reinforced with bonded FRP composites, taking into account loading model, shear lag effect and the thermal effect. These composites are used, in particular, for rehabilitation of structures by stopping the propagation of the cracks. They improve rigidity and resistance, and prolong their lifespan. In this paper, an original model is presented to predict and to determine the stresses concentration at the FRP end, with the new theory analysis approach. The model is based on equilibrium and deformations compatibility requirements in and all parts of the strengthened beam, i.e., the concrete beam, the FRP plate and the adhesive layer. The theoretical predictions are compared with other existing solutions. The numerical resolution was finalized by taking into account the physical and geometric properties of materials that may play an important role in reducing the stress values. This solution is general in nature and may be applicable to all kinds of materials.
Keywords
interfacial stresses; RC beam; strengthening; shear lag effect; thermal effects; composite materials;
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