Modelling Dowel Action of Discrete Reinforcing Bars in Cracked Concrete Structures

Kwan, A.K.H.; Ng, P.L.; Lam, J. Y. K.

doi:10.1063/1.3452261

Cited by 4 publications

(2 citation statements)

References 17 publications

(15 reference statements)

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“…The use of LINK180 element for steel reinforcement is not able to correctly model the dowel action in the deep beams with big size of the tension reinforcing bars. As observed in a numerical study by Kwan et al, 35 the dowel action of the tension steel bars had little influence on the load‐carrying capacity of the deep beam in comparison with the cases without considering the dowel effect. Further, in a work of El‐Shafiey et al, 36 to investigate the dowel effect contribution, three types of discrete model (LINK180 element), smeared model, and solid model representing the behavior of the steel reinforcement were considered in the FEM simulations of the punching shear of high‐performance concrete slabs.…”

Section: Finite Element Methodsmentioning

confidence: 68%

Effects of the bond properties of ETS‐GFRP bar to concrete on the shear behavior of ETS‐GFRP‐strengthened RC beams

Bui

2022

Structural Concrete

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This study numerically investigates the effects of bond properties between embedded through‐section‐glass fiber‐reinforced polymer (ETS‐GFRP) bars and concrete on the performance of the reinforced concrete (RC) beams strengthened in shear with ETS‐GFRP bars. The key bond parameters, including the interfacial fracture energy (Gf), bond stiffness (K), and bond strength (τm) are examined. Results demonstrate that the bond properties of ETS‐GFRP bar–concrete interfaces mainly affect the postpeak behavior and ductility of the ETS‐strengthened beams. The FE model considering triangle bond model for the ETS‐GFRP bar–concrete interfaces can reasonably predict the load versus deflection and failure mechanism of the ETS‐strengthened beam as well as the debonding process of the ETS‐GFRP bars from concrete against the experimental results. The use of the flexible and ductile adhesive, which has small bond stiffness and high interfacial fracture energy, for ETS‐GFRP bonding technology would lead to the large ductility of the ETS‐GFRP‐strengthened beams. The ETS‐GFRP bar–concrete interfaces with high cohesive strength can distribute the shear cracks and limit the local debonding, encouraging the deformability of ETS‐GFRP‐strengthened beams.

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Section: Finite Element Methodsmentioning

confidence: 68%

Effects of the bond properties of ETS‐GFRP bar to concrete on the shear behavior of ETS‐GFRP‐strengthened RC beams

Bui

2022

Structural Concrete

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“…A number of finite element (FE) models have been developed for the analysis of the dowel action [10][11][12][13][14]. Soltani and Maekawa [1] developed a path-dependent RC interface model under a multidirectional displacement path.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Bond Model for the Dowel Action considering the Fatigue Damage Effect

Tan

Wang

2018

Advances in Materials Science and Engineering

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To investigate the mechanical properties of dowel action under fatigue loads, 3 reinforced concrete specimens with different bar diameters (12 mm, 20 mm, and 25 mm) were subjected to the fatigue loading and were designed to investigate the attenuation character of dowel action and the fatigue failure modes. e load transfer mechanism of the bond was analyzed based on the 3D relative motions between reinforcing bars and subgrade concrete. Fatigue damage effects were considered in the model. A deterioration coefficient based on the deformation path was defined to represent the accumulation of fatigue damage. Verification of the model was conducted by comparing the analysis results with experimental data obtained in this study and from the literature, and satisfactory agreement was obtained.

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