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A FEM-based model to study the behavior of SRG-strengthened R/C beams

Katsamakas, Antonios A.; Papanikolaou, Vassilis K.; Thermou, Georgia E.

A FEM-based model to study the behavior of SRG-strengthened R/C beams Thumbnail


Antonios A. Katsamakas

Vassilis K. Papanikolaou

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Assistant Professor in Structural Engineering



In this paper, a new time‐effective modeling approach is proposed for predicting the response of shear‐deficient
reinforced concrete (R/C) beams strengthened with steel‐reinforced grout (SRG) jackets. Solid finite elements
are utilized for concrete using a fracture‐plasticity constitutive law, while both high‐strength steel cords and
conventional reinforcement are modeled using embedded truss elements with multilinear stress–strain laws.
The efficiency of the proposed method is assessed by comparing numerical against experimental data of nine
shear‐deficient beams strengthened with various SRG jacketing configurations. The comparison demonstrated
close correlation both in terms of failure mode and force–displacement curves. The numerical analysis predicted the observed crack pattern and failure modes accurately, whereas deviation in terms of load and deflection was, on average, less than 1% and 10%, respectively

Journal Article Type Article
Acceptance Date Mar 1, 2021
Online Publication Date Mar 9, 2021
Publication Date Jun 15, 2021
Deposit Date Mar 23, 2021
Publicly Available Date Mar 10, 2022
Journal Composite Structures
Print ISSN 0263-8223
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 266
Pages 113796
Keywords Civil and Structural Engineering; Ceramics and Composites
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Additional Information This article is maintained by: Elsevier; Article Title: A FEM-based model to study the behavior of SRG-strengthened R/C beams; Journal Title: Composite Structures; CrossRef DOI link to publisher maintained version:; Content Type: article; Copyright: © 2021 Elsevier Ltd. All rights reserved.


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