Use of carbon fiber reinforced composite in reinforced concrete beam subjected to unplanned discontinuity: reinforcement and finite element numerical analysis
DOI:
https://doi.org/10.5216/reec.v19i2.76850Keywords:
Structural Reinforcement, Carbon fiber reinforced composite, Numerical Analysis, Finite Elements, ShearAbstract
The execution of unplanned perforations in structural elements, especially in beams, has become a routine practice in the construction environment, caused by the lack of compatibility and interaction of professionals in the design stage. After the discontinuity of the structural element, a redistribution and significant increase in efforts develop, systemically affecting the performance of the element, and requiring the application of structural reinforcement. With this, one of the types of reinforcements that have been effective in its application is the carbon fiber reinforced composite (CRFC). Thus, the objective of this work is to demonstrate the executive process of the application of this reinforcement in beams with unforeseen discontinuity, as well as to prove its effectiveness through computational analysis. For this purpose, to perform the numerical simulation, the finite element method (FEM) was used, with the aid of the commercial software ANSYS. At first, the beams were modeled without and with perforation, and finally the implementation of CRFC. After the analysis, it was found that the carbon fiber contributes fundamentally to the absorption of tensile stresses, resulting from the significant increase in shear stresses, caused by the discontinuity in the element.
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