Three‐dimensional modelling of bond behaviour between concrete and FRP reinforcement

Abstract

The bond behaviour between FRP and concrete elements is investigated, starting from available experimental evidences, through a calibrated and upgraded 3D mathematical-numerical model. The complex mechanism of debonding failure of FRP concrete reinforcement is studied within the context of damage mechanics to appropriately describe transversal effects and developing a realistic study of the delamination process.

Concrete Damage Plasticity Model for Modeling FRP-to-Concrete Bond Behavior

“…Chen et al, 2011;Chen et al, 2012) or for modeling three-dimensional behavior (Salomoni et al, 2011) because it is unrealistic to model the whole strengthened structure in 3D using meso-scale elements due to heavy computational demands. The FRP-toconcrete interface is usually represented by zero thickness interface elements (e.g.…”

“…The FRP-toconcrete interface is usually represented by zero thickness interface elements (e.g. Diab and Wu, 2007;Salomoni et al, 2011). A constitutive law for the interface elements is needed to obtain from either the direct model approach or shear tests.…”

Nonlinear numerical analysis of the debonding failure process of FRP-to-concrete interfaces

“…[22]. However, too much time may be being spent on such 3D analysis and other methods could be excellent alternatives.…”

Finite Thin Cover on an Orthotropic Elastic Half Plane

“…In the field of civil engineering, sheets or fibre reinforced stiffeners are often modeled as thin membranes bonded to an elastic substrate simulating concrete [7][8][9][10][11] or rigid road pavement [12] (a viscoelastic analysis performed on variable structural systems can be found in [13,14]). As a rough approximation, these problems have been modeled by considering beams resting on an elastic support (e.g., [15]).…”