Interface slip effect on bonded plate repairs of concrete beams

Cai, C.S.; Nie, Jianguo; Shi, Xiang

doi:10.1016/j.engstruct.2006.07.017

Cited by 24 publications

(13 citation statements)

References 9 publications

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“…Interface 1 in Figure 2 is the adhesively bonded zone. Various bond-slip models based on fracture energy relations have been proposed to model the behavior of this interfacial bond (Nakaba et al, 2001;Monti et al, 2003;Savioa et al, 2003;Cai et al, 2007), and studies have shown that the models of Nakaba et al (2001), Monti et al (2003), and Savioa et al (2003) are in reasonably close agreement. Despite its profound effect on the softening zone size, the shape of the bond-slip model has been found to have little effect on the ultimate load of the FRP-plated beams.…”

Section: Adhesive Bond Model For Frp-concrete Interfacementioning

confidence: 87%

“…These parameters can be determined according to the existing bond-slip models (Nakaba et al, 2001;Monti et al, 2003;Savioa et al, 2003;Neto et al, 2004;Cai et al, 2007). According to the research of Neto et al (2004), the values of 1,000 MPa/mm, 1.5 N/mm, and 5 MPa are adopted for K b , G II f , and f b , respectively.…”

Section: Adhesive Bond Model For Frp-concrete Interfacementioning

confidence: 99%

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Numerical Analyses of Hybrid‐Bonded FRP Strengthened Concrete Beams

Wang

Kang

et al. 2009

Computer aided Civil Eng

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To overcome the problem of debonding, a new hybrid-bonded fiber-reinforced polymers (HB-FRP) strengthening system has recently been developed. This HB-FRP technique can increase the interfacial bond strength several folds. In this work, a finite element (FE) model for HB-FRP strengthened beams is developed to simulate the responses of the new structural system. The interfacial behaviors between the FRP and the concrete are simulated with a shear friction model. Comparisons between the predictions from this model and the test results demonstrate the accuracy of the FE model. The mechanism of the HB-FRP system and failure modes are then studied using the proposed model.

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Section: Adhesive Bond Model For Frp-concrete Interfacementioning

confidence: 87%

Section: Adhesive Bond Model For Frp-concrete Interfacementioning

confidence: 99%

Numerical Analyses of Hybrid‐Bonded FRP Strengthened Concrete Beams

Wang

Kang

et al. 2009

Computer aided Civil Eng

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“…11 presents the increasing trend of the deflection due to slip obtained from the analytic solution according to the change of shear bond stiffness. Note that the analytic solution is based on the Bernoulli's beam theory (Cai et al, 2007). δ without slip is the deflection under perfect composition and δ with slip is the deflection under occurrence of slip at the interface.…”

Section: Comparison Of Performancementioning

confidence: 99%

Shear connection system and performance evaluation of FRP-concrete composite deck

et al. 2010

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Strong composition between FRP and concrete is an indispensable prerequisite to achieve the structural integrity of FRP-concrete composite deck. Accordingly, this study evaluates experimentally the behavioral characteristics of such shear connection systems realized by coarse sand coating and concrete wedge. The results show that coarse sand coating develops composite performance close to perfect composition in the shear direction but exhibits weakness against normal split. On the other hand, concrete wedge appears to be an efficient solution to resolve such problem. Therefore, a new shear connection system combining coarse sand coating and concrete wedge has been conceived and test revealed that the new shear connection system provides equivalent static performance together with significantly improved fatigue performance compared to the coarse sand coating composition. Following, the shear connection system combining both coarse sand coating and concrete wedge constitutes an efficient solution satisfying the strong composition requirement for the structural system.

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“…[2,3] Therefore, a good understanding of this problem is thus important for the development of suitable strength models. To this aim, many studies have been conducted, either analytically, numerically, or both to predict the interfacial stresses, see, for example, those by Smith and Teng [4], Maalej and Bian [5], Tounsi et al [6], Yang and Wu [7], Bensaid et al [8,9], Ghafoori and Motavalli [10], Tounsi and Benyoucef [11], Cai et al [12]. Ameur et al [13] proposed a method to predict the interfacial stresses in steel beams strengthened with a bonded hygrothermal aged composite plate, where the adherends shear deformations have been taken into account, a geometrical coefficient was incorporated which shows the shear Lag effect.…”

Section: Introductionmentioning

confidence: 98%

Interfacial stress analysis of functionally graded beams strengthened with a bonded hygrothermal aged composite plate

Bensaid

Kerboua

2016

Composite Interfaces

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Interfacial stress analysis of functionally graded beams strengthened with a bonded hygrothermal aged composite plate ABSTRACT This paper reports an improved analytical solution for analysis the problem of interface stresses in functionally graded beam (FGB) strengthened with bonded hygrothermal aged composite plates. The material properties of the functionally graded beam are supposed to vary according to power law distribution of the volume fraction of the constituents through the beam thickness. The obtained results are compared with the existing solutions in the literature to verify the validity of the new analytical approach. It is found that the inhomogeneities play an important role in reducing the stress concentrations along bi-material interfaces. Finally, a parametric study was carried out to show the effects of the fiber volume fraction, the hygrothermal effect, and some design variables, e.g. thickness of adhesive layer and FRP plate on the magnitude of maximum shear and normal stress.

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Interface slip effect on bonded plate repairs of concrete beams

Cited by 24 publications

References 9 publications

Numerical Analyses of Hybrid‐Bonded FRP Strengthened Concrete Beams

Numerical Analyses of Hybrid‐Bonded FRP Strengthened Concrete Beams

Shear connection system and performance evaluation of FRP-concrete composite deck

Interfacial stress analysis of functionally graded beams strengthened with a bonded hygrothermal aged composite plate

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