A novel numerical model of debonding of FRP-plated concrete beam

Shahbazpanahi, Shahriar; Kamgar, Alaleh

doi:10.1080/02533839.2014.929714

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…Corrosion, confinement, and cost are reasons why these techniques are rarely used. Nowadays, to retrofit a beam column joint, external fiber-reinforced polymer (FRP) is used [8]. However, use of fracture mechanics modelling to analyse dynamic crack propagation in the joints strengthened by CFRP has not been reported [9].…”

Section: Introductionmentioning

confidence: 99%

The development of a dynamic fracture propagation model for FRP-strengthened beam-column joints

Shahbazpanahi¹

2018

J. vibroeng.

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Accurate modeling is required to investigate the behavior of concrete structures strengthened by carbon fiber-reinforced polymer (CFRP). There is, however, limited knowledge on the use of dynamic modeling to study the crack propagation in the beam-column joints strengthened by CFRP. A finite element model is developed to study crack propagation in the CFRP-strengthened joints under dynamic loads. A three-dimensional model is developed to predict the crack propagation under cyclic loading in the ABAQUS software. In this study, dynamic fracture analysis is used to model the crack propagation in the concrete material. Furthermore, the model is used to predict dynamic debonding in CFRP strengthened with the fracture mechanics approach. The results of the present study showed a good agreement with previous experimental results by about 7.1-11.6 %. The proposed model indicates that the crack propagation is controlled by using CFRP composites in the beam-column joint. Furthermore, it is observed that the width of strut zone in the joint increases by the using of FRP strengthening.

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Section: Introductionmentioning

confidence: 99%

The development of a dynamic fracture propagation model for FRP-strengthened beam-column joints

Shahbazpanahi¹

2018

J. vibroeng.

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“…In studies that have previously been mentioned, the bond-slip attracts more attention than the cracks in concrete as well as the FRP ruptures [25][26][27] criterion is taken into account. The effects of the FRP shearstrengthening on the crack propagation criterion have not been investigated based on the energy approach yet and this effect requires further study.…”

Section: Introductionmentioning

confidence: 99%

Fracture mechanic modeling of fiber reinforced polymer shear-strengthened reinforced concrete beam

Shahbazpanahi

Ali

Kamgar

et al. 2015

Composites Part B: Engineering

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a b s t r a c tA numerical method is developed to model shear-strengthening of reinforced concrete beam by using fiber reinforced polymer (FRP) composites. Tensile crack is simulated by a non-linear spring element with softening behavior ahead of the crack tip to model the cohesive zone in concrete. A truss element is used, parallel to the spring element, to simulate the energy dissipation rate by the FRP. The strain energy release rate is calculated directly by using a virtual crack closure technique. It is observed that the length of the fracture process zone (FPZ) increases with the application of FRP shear-strengthening. The present model shows that the main diagonal crack is formed at the support in the control beam while it appears through the shear span in the shear-strengthened beam. Another important observation is that the load capacity increases with the number of CFRP sheets in the shear span.

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Experimental and Numerical Model of Interior Reinforced Concrete Beam–Column Joints Strengthened with Carbon Fiber-Reinforced Polymer Sheets

Shahbazpanahi

Hejazi

Rahimipour

et al. 2018

Iran J Sci Technol Trans Civ Eng

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A novel numerical model of debonding of FRP-plated concrete beam

Cited by 4 publications

References 17 publications

The development of a dynamic fracture propagation model for FRP-strengthened beam-column joints

The development of a dynamic fracture propagation model for FRP-strengthened beam-column joints

Fracture mechanic modeling of fiber reinforced polymer shear-strengthened reinforced concrete beam

Experimental and Numerical Model of Interior Reinforced Concrete Beam–Column Joints Strengthened with Carbon Fiber-Reinforced Polymer Sheets

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