Journal
COMPOSITES PART B-ENGINEERING
Volume 45, Issue 1, Pages 1222-1233Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2012.06.009
Keywords
Debonding; Strength; Analytical modelling
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An important phenomenon that characterizes the behavior of shear-strengthened beams with FRP at ultimate is the shear interaction effect between internal and external transverse reinforcements, which represents a key factor that significantly affects the shear capacity of the FRP-strengthened beam. The present paper is finalized to study the mechanism of shear interaction and to quantify the effect of the under-mobilization of the internal steel stirrups. By adopting some rationale simplifications to describe the bond-slip behavior, the problem is developed in a way that a closed-form solution can be obtained which is, therefore, particularly useful for practical design purpose. Furthermore, a parametric analysis was carried out to identify the sensitivity of the theoretical solutions to the variation of some principal mechanical and geometrical parameters. Finally, a comparison with some experimental data available in the literature shows the consistency and reliability of the proposed model. (c) 2012 Elsevier Ltd. All rights reserved.
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