Analytical modelling of bond-slip failure between epoxy bonded FRP and concrete substrate

被引：18
作者：
Nelson, Levingshan Augusthus [1 ]
Al-Allaf, Mustafa [2 ]
Weekes, Laurence [1 ]
机构：
[1] Univ Salford, Sch Sci Engn & Environm, Newton Bldg, Salford M5 4WT, Lancs, England
[2] Al Nahrain Univ, Dept Civil Engn, Baghdad, Iraq
来源：
COMPOSITE STRUCTURES | 2020年 / 251卷
关键词：
Bond-slip model; Epoxy bonded external FRP; Retrofitting of concrete structures; BEHAVIOR; STRENGTH; PERFORMANCE; INTERFACES; COMPOSITE; STEEL;
D O I：
10.1016/j.compstruct.2020.112596
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this paper, a set of explicit theoretical derivations from a generalised bond-slip model for an epoxy bonded fibre reinforced polymer (FRP) sheet to concrete are presented. The derivations address the maximum bond resistance, load-slip response, effective bond length and stress-strain distributions along the FRP. The generalised bond-slip model was compared with the existing bond-slip models to obtain the optimal bond-slip parameter using bond resistance results of single and double lap shear tests results available in the literature. The theoretical predictions using the optimal bond-slip parameters showed good agreement with experimental results of double lap shear tests. Furthermore, in order to understand the influence of the bond-slip parameters, a series of parametric studies are presented. Overall, the proposed bond-slip model and explicit derivations provide complete understanding of bonded FRP on concrete, as opposed to the partial understanding provided by empirical and semi-empirical models available in the literature.
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页数：11
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