Numerical investigation of concrete columns with external FRP jackets subjected to axial loads

Mazzucco, Gianluca; Salomoni, Valentina; Majorana, C. E.; Pellegrino, Carlo; Ceccato, Chiara

doi:10.1016/j.conbuildmat.2016.02.050

Cited by 31 publications

(10 citation statements)

References 30 publications

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“…This model was successfully implemented in ABAQUS for the FE analysis of FRP-confined circular/square concrete columns and hybrid FRP-concrete-steel double-skin tubular columns under concentric compression [41]. The model has subsequently been utilized by some other researchers (e.g., [40,45,46,47]) and it was found that this model is capable of providing reasonable stress-strain responses for FRP-confined concrete under both uniform and non-uniform confinement [40,48].…”

Section: Introductionmentioning

confidence: 99%

Behavior and Three-Dimensional Finite Element Modeling of Circular Concrete Columns Partially Wrapped with FRP Strips

2018

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Fiber-reinforced polymer (FRP) jacketing/wrapping has become an attractive strengthening technique for concrete columns. Wrapping an existing concrete column with continuous FRP jackets with the fiber in the jacket being oriented in the hoop direction is referred to as FRP full wrapping strengthening technique. In practice, however, strengthening concrete columns with vertically discontinuous FRP strips is also favored and this technique is referred to as FRP partial wrapping strengthening technique. Existing research has demonstrated that FRP partial wrapping strengthening technique is a promising and economical alternative to the FRP full wrapping strengthening technique. Although extensive experimental investigations have hitherto been conducted on partially FRP-confined concrete columns, the confinement mechanics of confined concrete in partially FRP-confined circular columns remains unclear. In this paper, an experimental program consisting of fifteen column specimens was conducted and the test results were presented. A reliable three-dimensional (3D) finite element (FE) approach for modeling of partially FRP-confined circular columns was established. In the proposed FE approach, an accurate plastic-damage model for concrete under multiaxial compression is employed. The accuracy of the proposed FE approach was verified by comparisons between the numerical results and the test results. Numerical results from the verified FE approach were then presented to gain an improved understanding of the behavior of confined concrete in partially FRP-confined concrete columns.

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Section: Introductionmentioning

confidence: 99%

Behavior and Three-Dimensional Finite Element Modeling of Circular Concrete Columns Partially Wrapped with FRP Strips

2018

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“…Fig. 2.13: Numerical-experimental comparison in stress vs. strain diagrams for square columns with internal steel reinforcements and external FRP jacket (Mazzucco et al 2016)…”

Section: Concrete Damaged Plasticity Model (Cdp) In Abaqus Fem Softwarementioning

confidence: 99%

Axial Strength Of Lightweight Self-Consolidating Concrete Columns With Engineered Cementitious Composite

Parajuli¹

2021

Preprint

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Axial load behavior of confined columns with engineered cementitious composite (ECC) wrapping was investigated through experimental, analytical and finite element (FE) investigations. The variables in the study were: geometry (cylindrical and rectangular), presence or absence of longitudinal and tie reinforcement, ECC wrap thickness, types of concrete core (lightweight and normal weight self-consolidating concrete) and type of loading (applied through both core and wrap or core only). The effect of these variables on axial load-deformation response, strain characteristics, failure modes, ductility, energy absorption capacity and axial strength were evaluated. The confined concrete strengths predicted from existing analytical and developed FE models were found to be in good agreement with those of experiments. The axial load capacity and ductility were increased for columns with highest ECC wrap thickness (50 mm) while thinner wrap increased stiffness instead of ductility. Canadian code conservatively predicted axial strength of columns having increased thickness of ECC wrap.

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“…Mazzucco et al [9] simulated the behavior of concrete columns strengthened with carbon fiber-reinforced polymer under axial loading using a damage model. The model was applied on circular and square columns under monotonic compressive loading.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Reinforced Concrete Strengthened Columns Under Cyclic Loading

et al. 2017

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Although many numerical investigations are available on external strengthening of reinforced concrete columns using fiber-reinforced polymer jackets, there are few numerical investigations presented on rectangular/square reinforced concrete columns subjected to cyclic lateral loading. In the present work, numerical analyses on square reinforced concrete columns strengthened using fiber-reinforced polymer and steel bars were carried out. This paper is divided into two parts. In the first part, two numerical models were presented to predict the cyclic behavior of the columns strengthened using either glass fiber-reinforced polymer or steel bars. The results of the first part showed a good accordance between the numerical modeling and the experimental laboratory tests. The second part reports a numerical investigation that evaluates the comparative behavior of reinforced concrete columns strengthened with glass fiber-reinforced polymer subjected to cyclic lateral loading, in which a parametric study related to the amount of the glass fiberreinforced polymer material wrapping with 1-3 layers was performed. The results of the parametric study revealed that although the general behaviors of the columns are slightly similar in terms of load capacity and maximal displacement, the solicitations at the glass fiber-reinforced polymer material scale and the values of the cracks corresponding to the maximum load are different. The main objectives of this numerical modeling were to provide a comparison between the numer-B Chahmi Oucif ical models and the experimental tests and to show the necessity to perform more complex numerical simulation to describe the behavior of strengthened materials in finer scale.

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Numerical investigation of concrete columns with external FRP jackets subjected to axial loads

Cited by 31 publications

References 30 publications

Behavior and Three-Dimensional Finite Element Modeling of Circular Concrete Columns Partially Wrapped with FRP Strips

Behavior and Three-Dimensional Finite Element Modeling of Circular Concrete Columns Partially Wrapped with FRP Strips

Axial Strength Of Lightweight Self-Consolidating Concrete Columns With Engineered Cementitious Composite

Numerical Modeling of Reinforced Concrete Strengthened Columns Under Cyclic Loading

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