## 1 Introduction
In the numerical analysis, the model was validated using the finite element program in the first stage, using the results of a full-scale laboratory experiment. In the second stage, the model was expanded by considering the parameters that will affect the performance of the soil wall in the marine environment. When the obtained results were evaluated, it was seen that the geogrid stiffness significantly affected the horizontal movement of the earth-reinforced walls as the quay wall. In the study, it has been verified that the geogrid length should be at least equal to the wall height to ensure the overall external stability of the walls used for the purpose of the quay wall. In addition, numerical results show that geogrids with smaller spacing should be used in the upper layers to minimize the lateral and vertical deformation of the quay wall. [PERSON] et al. [10] experimentally and numerically investigated the deepening of caisson-type quay walls by grouting or rubble-mound excavation. Experiments were carried out in a centrifuge device at a scale of \(1/120\). The Plaxis 2D program was used for numerical analysis. In the study, displacements of the caisson, reaction accelerations, deformation of the quay wall, and earth pressures were examined in detail based on the comparison of numerical and experimental results. The results showed that the movement of the caisson changed, and its displacement decreased significantly after the renovation, and the experimental results were consistent with the numerical results. [PERSON] et al. [11] discussed the rehabilitation of a historical masonry retaining wall by evaluating its seismic safety. In the study, both material and deterioration analyses in such structures, as well as some structural features and difficulties encountered in determining the geometry necessary to comment on the safety of the structure, are discussed. For this reason, an approach that addresses all uncertainties and evaluates them probabilistically has been developed in the risk assessment of such structures. For this purpose, a simple mechanical model taking into account different and alternative collapse modes was developed and Monte Carlo simulations were carried out after the uncertain parameters were characterized probabilistically. Within the scope of the study, the value of the current risk index was determined, and a sensitivity analysis was performed to determine the parameters that most affect building safety. [PERSON] et al. [12] examined the performance of the quay structure in case of increasing the water depth in front of it. In case of an increase in water depth, the improvement of the rubble mound under the caisson toe by injection was optimized and suggestions were made. They also performed analyses to predict the behavior of the quay wall and grouted rubble mound using a finite element program. The results show that the contact stress between the caisson and the rubble mound increases sharply after improvement. In addition, when the hardening soil (HS) model was used, the deformations on the quay wall were found to be higher than the Mohr-Coulomb (MC) soil model. [PERSON] and [PERSON] [13] investigated a solution for the renewal of the caisson-type gravity quay wall with geo-centrifuge experiments. They carried out the experiments for both existing and renewed walls. As a solution for strengthening, the method of deepening the quay wall and strengthening through grouting was used. Acceleration and caisson displacements were measured in the experiments, and it was observed that the acceleration from the base to the surface increased for both cases. However, the increase in the renewed quay wall was lower than the current situation. It was observed that the displacements of the caisson decreased significantly after the renovation; thus, the damage resistance increased. [PERSON] and [PERSON] [14] present a new technique for the repair of sheet piles with drum-type cells in the repair of damaged quay walls.