Numerical simulation of spatial variable stiffness leveling design method of composite foundation

foundation foundations;  sedimentation deformation;  Variable stiffness leveling design;  numerical simulation;  Design principles

Based on the principle that the supporting stiffness of the foundation corresponds to the distribution characteristics of the upper load, and considering the distribution of stress field and strain field in the foundation, the spatial stiffness design method of the foundation is numerically analyzed. The three-dimensional finite element model of composite foundation is established, and the spatial change of supporting stiffness of foundation is reflected by the change of deformation modulus of foundation, and the distribution law of foundation settlement contour when discussing the spatial change of foundation support stiffness verifies that the spatial stiffness of foundation has a significant effect on reducing the settlement difference of foundation, improving the force mode of building structure, reducing the internal force and thickness of raft and reducing the secondary stress of the superstructure.