SRG/SRP–concrete bond–slip laws for externally strengthened RC beams

Bencardino, Francesco; Condello, Antonio

doi:10.1016/j.compstruct.2015.06.068

Cited by 29 publications

(16 citation statements)

References 27 publications

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“…The details of the beams with reference to their geometry and internal/external reinforcements are shown in Figure 1. the studies are concerning the numerical modeling of structural elements strengthened with them [23]. In order to carry out analytical and numerical (FE) analyses of SRG/SRP strengthened RC members specific analytical tools [24] and bond-slip models [23], should be used, respectively.…”

Section: Beam Prototypesmentioning

confidence: 99%

“…To model concrete-external reinforcement interface some FRP-concrete bond-slip laws, calibrated and validated by Bencardino and Condello [23] for SRG/SRP systems, were adopted. The purpose was to also assess the adaptability of these bond-slip laws to SRG/SRP strengthened RC beams with U-wrap end anchorages.…”

Section: Beam Prototypesmentioning

confidence: 99%

“…However, appropriate bond-slip laws capable to predict the structural behavior of strengthened RC elements are not yet available in the literature for inorganic based strengthening systems. Nevertheless, the reliability and adaptability of some bond-slip laws [33][34][35][36] proposed for the FRP systems to predict the behavior of RC beams externally simple plated with SRG and SRP systems was recently analyzed by Bencardino and Condello [23]. The study concludes that among a set of bi-linear FRP-concrete bond-slip laws, the Lu et al [35] bond-slip model was also suitable to simulate the behavior of a SRG-concrete interface.…”

Section: Interface Model and Bond-slip Lawsmentioning

confidence: 99%

“…The study concludes that among a set of bi-linear FRP-concrete bond-slip laws, the Lu et al [35] bond-slip model was also suitable to simulate the behavior of a SRG-concrete interface. For the SRP-concrete interface a modification of the same bondslip law was proposed, calibrated, and validated against the available experimental data [23]. The The numerical simulations should be carried out by using specific SRG/SRP-concrete bond-slip laws.…”

Section: Interface Model and Bond-slip Lawsmentioning

confidence: 99%

“…The properties and potential applications of these new materials have been analyzed in some experimental investigations [11][12][13][14][15][16][17][18][19][20][21][22], but few of the studies are concerning the numerical modeling of structural elements strengthened with them [23]. In order to carry out analytical and numerical (FE) analyses of SRG/SRP strengthened RC members specific analytical tools [24] and bond-slip models [23], should be used, respectively. Until today, standards and guidelines addressed to SRG/SRP systems were not yet available and should be defined.…”

Section: Introductionmentioning

confidence: 99%

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3D FE Analysis of RC Beams Externally Strengthened with SRG/SRP Systems

Bencardino

Condello

2016

Fibers

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Abstract:The purpose of this study is to evaluate, through a nonlinear Finite Element (FE) analysis, the structural behavior of Reinforced Concrete (RC) beams externally strengthened by using Steel Reinforced Grout (SRG) and Steel Reinforced Polymer (SRP) systems. The parameters taken into account were the external strengthening configuration, with or without U-wrap end anchorages, as well as the strengthening materials. The numerical simulations were carried out by using a three-dimensional (3D) FE model. The linear and nonlinear behavior of all materials was modeled by appropriate constitutive laws and the connection between concrete substrate and external reinforcing layer was simulated by means of cohesive surfaces with appropriate bond-slip laws. In order to overcome convergence difficulties, to simulate the quasi-static response of the strengthened RC beams, a dynamic approach was adopted. The numerical results in terms of load-displacement curves, failure modes, and load and strain values at critical stages were validated against some experimental data. As a result, the proposed 3D FE model can be used to predict the structural behavior up to ultimate stage of similar strengthened beams without carrying out experimental tests.

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Section: Beam Prototypesmentioning

confidence: 99%

Section: Beam Prototypesmentioning

confidence: 99%

Section: Interface Model and Bond-slip Lawsmentioning

confidence: 99%

Section: Interface Model and Bond-slip Lawsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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3D FE Analysis of RC Beams Externally Strengthened with SRG/SRP Systems

Bencardino

Condello

2016

Fibers

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Finite element analysis of ductility and flexural capacity of FRP and steel bars hybrid reinforced concrete beams

Wei,

He,

Chen

et al. 2024

Structural Concrete

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To study the flexural behavior of hybrid reinforced concrete (hybrid‐RC) beams with FRP and steel bars, this paper used ABAQUS finite element (FE) software to model and nonlinear analyze the hybrid‐RC beams and investigate the effects of effective reinforcement ratio, concrete strength, and FRP bars type on the flexural behavior of hybrid‐RC beams. In addition, the FRP bars stress, flexural bearing capacity, and ductility formulas for hybrid‐RC beams were fitted based on the FE results, and existing literature data were used to verify their accuracy. The FE model results indicated that the effective reinforcement ratio, FRP bars type, and concrete strength significantly impacted the flexural bearing capacity and deformation performance of hybrid‐RC beams. Increasing the strength of concrete improved the flexural bearing capacity and ductility of hybrid‐RC beams; increasing the effective reinforcement ratio and the elastic modulus of FRP bars increased the flexural bearing capacity of the hybrid‐RC beams but decreased its ductility. In addition, the fitted FRP bars stress, flexural bearing capacity, and ductility calculation formulas can quickly and conveniently predict the flexural bearing capacity and ductility of hybrid‐RC beams.

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Numerical modelling of reinforced concrete flexural members strengthened using textile reinforced mortars

Revanna

Moy

2023

Front. Struct. Civ. Eng.

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SRG/SRP–concrete bond–slip laws for externally strengthened RC beams

Cited by 29 publications

References 27 publications

3D FE Analysis of RC Beams Externally Strengthened with SRG/SRP Systems

3D FE Analysis of RC Beams Externally Strengthened with SRG/SRP Systems

Finite element analysis of ductility and flexural capacity of FRP and steel bars hybrid reinforced concrete beams

Numerical modelling of reinforced concrete flexural members strengthened using textile reinforced mortars

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