Ultimate strength analysis of CFRP confined concrete using finite element method (FEM)

Abstract

This paper presents a comparison with experimental data of CFRP confined concrete column damage. The study investigates the behaviour of CFRP confined concrete beams against the experimental results. It also investigates the influence of different parameters on the behaviour of the FRP confined concrete column. The ABAQUS code was used to develop finite element models for simulation of the damage behaviour of the beams. The concrete was modelled using a plastic-damage model which is a perfect bond model and were evaluated for the concrete-FRP confinement interface. The results showed that when the thickness of carbon-fibre reinforced plastics (CFRP) proportional to the load capacity of the beam for both shear and compressive strength. The maximum load increases with an incremental of CFRP thickness. From the simulation results, the load- deflection relationships have been analysed and the FEM results agreed well with the experiments data. Finally, the study shows that the differences between the results of finite element analysis and experimental tests are in an acceptable range.