The embedding of anchoring systems in the retrofitting of Reinforced Concrete (RC) structures by means of Fiber Reinforced Polymers (FRP) often implies local failure modes associated with high stress concentrations. In order to account for such mechanical behaviours in standard…
The embedding of anchoring systems in the retrofitting of Reinforced Concrete (RC) structures by means of Fiber Reinforced Polymers (FRP) often implies local failure modes associated with high stress concentrations. In order to account for such mechanical behaviours in standard fi- nite element computations, an explicit representation of interfaces is usually required. This strategy presents, however, several limitations in terms of computational cost and mesh-related issues. Spe- cific finite elements for the simulation of pull-out mechanisms are here presented. The presence of interfaces is taken into account by enriching the displacement approximation by means of additional unknownsdefinedattheelementlevel. Static-condensation,therefore, allowspreservingthestructure of the finite element procedure and limiting the computational effort.