There are various retrofitting strategies for strengthening damaged masonry walls. GFRPs are known as one of the new FRP-reinforcing techniques that are widely employed in masonry constructions. The purpose of this study is to evaluate the in-plane performance of damaged masonry walls which are strengthened by different GFRP configurations utilizing macro-scale numerical approach. To achieve this aim, firstly, a macro-scale numerical model of a masonry wall is simulated by finite element method in ABAQUS software and it is validated with an experimental result under a combination of a pre-compressive vertical and a horizontal cyclic loading. Secondly, according to constitutive equation-based methods, damaged areas which were observed in the experimental test are assigned to the validated model and the wall is retrofitted with six different GFRP layouts including Circuit, Vertical, Horizontal, H-shape, I-shape and Plus. Lastly, the in-plane cyclic behavior of walls is conducted and compared in terms of strength, stiffness, energy absorption and efficiency. The results revealed that the Horizontal and H-shape layouts have better performances than the Circuit and I-shape configurations. The Circuit and Horizontal configurations displayed quite similar resistance as well as H-shape and I-shape patterns. It was also observed that the Vertical configuration is the most effective GFRP layout since it provides the most enhanced in-plane resistance (51.91%) and dissipated energy (83.88%) with the highest efficiency index.
