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The technique of externally bonding fiber-reinforced polymer (FRP) composites has become very popular worldwide for retrofitting existing reinforced concrete (RC) structures. Debonding of FRP from the concrete substrate is a typical failure mode in such strengthened structures. The bond behavior between FRP and concrete thus plays a crucial role in these structures. The FRP-to-concrete bond behavior has been extensively investigated experimentally, commonly using a single or double shear test of the FRP-to-concrete bonded joint. Comparatively, much less research has been concerned with numerical simulation, chiefly due to difficulties in the accurate modeling of the complex behavior of concrete. This paper presents a simple but robust finite-element (FE) model for simulating the bond behavior in the entire debonding process for the single shear test. A concrete damage plasticity model is proposed to capture the concrete-to-FRP bond behavior. Numerical results are in close agreement with test data, validating the model. In addition to accuracy, the model has two further advantages: it only requires the basic material parameters (i.e., no arbitrary user-defined parameter such as the shear retention factor is required) and it can be directly implemented in the FE software ABAQUS.
The technique of externally bonding fiber-reinforced polymer (FRP) composites has become very popular worldwide for retrofitting existing reinforced concrete (RC) structures. Debonding of FRP from the concrete substrate is a typical failure mode in such strengthened structures. The bond behavior between FRP and concrete thus plays a crucial role in these structures. The FRP-to-concrete bond behavior has been extensively investigated experimentally, commonly using a single or double shear test of the FRP-to-concrete bonded joint. Comparatively, much less research has been concerned with numerical simulation, chiefly due to difficulties in the accurate modeling of the complex behavior of concrete. This paper presents a simple but robust finite-element (FE) model for simulating the bond behavior in the entire debonding process for the single shear test. A concrete damage plasticity model is proposed to capture the concrete-to-FRP bond behavior. Numerical results are in close agreement with test data, validating the model. In addition to accuracy, the model has two further advantages: it only requires the basic material parameters (i.e., no arbitrary user-defined parameter such as the shear retention factor is required) and it can be directly implemented in the FE software ABAQUS.
Concrete damage plasticity model for modeling FRP-to-concrete bond behavior
2015-02-01
Tao , Y & Chen , J 2015 , ' Concrete damage plasticity model for modeling FRP-to-concrete bond behavior ' , Journal of Composites for Construction , vol. 19 , no. 1 , 04014026 . https://doi.org/10.1061/(ASCE)CC.1943-5614.0000482
Article (Journal)
Electronic Resource
English
Bond , Concrete , Damage , Fiber-reinforced polymer , Finite-element model , /dk/atira/pure/subjectarea/asjc/2200/2205 , name=Civil and Structural Engineering , /dk/atira/pure/subjectarea/asjc/2200/2215 , name=Building and Construction , /dk/atira/pure/subjectarea/asjc/2500/2503 , name=Ceramics and Composites , /dk/atira/pure/subjectarea/asjc/2200/2210 , name=Mechanical Engineering , /dk/atira/pure/subjectarea/asjc/2200/2211 , name=Mechanics of Materials
Concrete Damage Plasticity Model for Modeling FRP-to-Concrete Bond Behavior
| British Library Online Contents | 2015
Concrete Damage Plasticity Model for Modeling FRP-to-Concrete Bond Behavior
| Online Contents | 2015
Concrete Damage Plasticity Model for Modeling FRP-to-Concrete Bond Behavior
| Tema Archive | 2015