Abstract: To analyze the stress state of the modified wharf structure, combined with a wharf renovation project, the ABAQUS was applied to set up the two-dimensional and three-dimensional FEM. Based on the force analysis of half-covered sheet-pile wharf, it is concluded that the half-covered pile can greatly reduce the soil pressure on the sheet-pile wall, and thus reduce the bending moment in the span. When calculating the soil pressure of front sheet-pile wall in the range of covered pile with the theory of parallel wall, the static soil pressure coefficient should be adjusted to the main soil pressure coefficient. When calculating the bending moment of front sheet-pile wall, the calculation results of two-dimensional model and three-dimensional model have the same trend, and the difference is very small, within 5%.