Abstract: In this paper,the integrity of a kind of prefabricated foundation with circumferential prestressed connections is studied by theoretical derivation and ABAQUS finite element simulation. The main conclusions can be summarized as follows:1)The maximum relative slip direction and position between adjacent prefabricated parts are determined. 2)The calculation method of the maximum static friction force between adjacent prefabricated parts is derived. 3)The concept of relative stiffness ratio is proposed,and the overall stiffness of the foundation increases with the increase of relative stiffness ratio. 4)When the normal pressure is large enough,the relationship between the friction force and the bending moment is linear. 5)The relative slip between adjacent parts can be effectively reduced by the increase of circumferential pre-stress.