Abstract: This paper considers the influence of the retaining wall deformation and the soil arching effect on the active earth pressure and considers the non-limit equilibrium earth pressure to discuss the relationship between the earth pressure and the retaining wall deformation. Obtaining the analytical formula for the ultimate earth pressure can simulate the process of the earth pressure gradually developing from static earth pressure to active earth pressure with the deformation of the retaining wall. The non limit equilibrium soil pressure model is applied to the elastic foundation beam model, and the equilibrium differential equation of the elastic foundation beam is solved by combining the rod finite element method and the semi -numerical and the semi-analytical methods to explore the deformation characteristics of the retaining structure during the excavation. Through the specific engineering cases, a statistical analysis of measured data such as deformation of the retaining wall and the soil pressure is conducted to study the influence and the regularity of the deformation characteristics of the retaining wall, and to verify the rationality and reliability of theoretical methods.

Key words: Non-Limit Equilibrium Earth Pressure, Soil Arching Effect, Deformation of Retaining Wall