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Numerical Modelling of Concrete Beams Reinforced with Pre-Stressed CFRP

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Abstract:

In this paper, a numerical simulation is presented on the behavior of concrete beams, reinforced with pre-stressed CFRP. The numerical results are compared to experimental results. Non-linear material behaviour is considered, namely: the inelastic compressive concrete behaviour, the elasto-plastic behaviour of steel reinforced bars, the bond-slip relationship between the concrete and the internal steel reinforced bars, the mode-II fracture interface between the concrete and the pre-stressed CFRP and concrete cracking. Cracking in concrete is modelled according to a discrete strong discontinuity approach, in which the discontinuities are embedded within the finite elements. A sequentially-linear approach is adopted in order to avoid non-convergence problems. The present analysis aims at trying to better understand the failure mechanisms found in the experimental tests; these mechanisms will be discussed in a final section of the paper.

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Periodical:

Key Engineering Materials (Volumes 348-349)

Pages:

685-688

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.348-349.685

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Online since:

September 2007

Authors:

Jorge Alfaiate, Thiago Domingues

Keywords:

Carbon Fiber Reinforced Polymer/Plastic (CFRP), Externally Reinforced Concrete Beams, Strong Discontinuities

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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