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Predetermination of potential plastic hinges on reinforced concrete frames using GFRP reinforcement

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Abstract

In the past, glass fiber-reinforced polymer (GFRP)-reinforcement has been successfully applied in reinforced concrete (RC) structures where corrosion resistance, electromagnetic neutrality, or cuttability were required. Previous investigations suggest that the application of GFRP in RC structures could be advantageous in areas with seismic activity due to their high deformability and strength. However, especially the low modulus of elasticity of GFRP limited its wide application as GFRP-reinforced members usually exhibit considerably larger deformations under service loads than comparable steel-reinforced elements. To overcome the aforementioned issues, the combination of steel and GFRP reinforcement in hybrid RC sections has been investigated in the past. Based on this idea, this paper presents a novel concept for the predetermination of potential plastic hinges in RC frames using GFRP reinforcement. To analyze the efficiency of the concept, nonlinear finite element simulations were performed. The results underscore the high efficiency of hybrid steel-GFRP RC sections for predetermining potential plastic hinges on RC frames. The results also indicate that the overall seismic behavior of RC structures could be improved by means of GFRP as both the column base shear force during the seismic activity as well as the plastic deformations after the earthquake were considerably less pronounced than in the steel-reinforced reference structure.

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Acknowledgements

The investigations presented in this paper were supported by Alexander von Humboldt Foundation, Germany, through a Feodor Lynen Research Fellowship for Post-Doctoral Researchers and by a grant from Natural Sciences and Engineering Research Council (NSERC) of Canada. The authors would like to express their sincere gratitude for the support received.

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Authors and Affiliations

  1. Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, ON, N2L 3G1, Canada

    Dominik Kueres & Maria Anna Polak

  2. Schoeck Canada Inc., Ottawa, ON, K1P 5G3, Canada

    Dritan Topuzi

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  1. Dominik Kueres
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  2. Dritan Topuzi
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  3. Maria Anna Polak
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Correspondence to Dominik Kueres.

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Kueres, D., Topuzi, D. & Polak, M.A. Predetermination of potential plastic hinges on reinforced concrete frames using GFRP reinforcement. Front. Struct. Civ. Eng. 16, 624–637 (2022). https://doi.org/10.1007/s11709-022-0832-2

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  • DOI: https://doi.org/10.1007/s11709-022-0832-2

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