High-pile cushion cap foundation based on swirling pile and construction method thereof

The invention belongs to the technical field of structural foundations, and discloses a high-pile cushion cap foundation based on a swirling pile and a construction method thereof. The lower part of acushion cap is connected with a vertical swirling pile and a plurality of inclined swirling piles, and the top of the cushion cap is connected with a central cylinder; at least one layer of whirlingbearing blades are arranged on the outer side of soil entry sections of the vertical swirling pile and the inclined swirling piles, stiffening ribs are arranged on the outer side of a section connected with the cushion cap, and shear keys are arranged on the inner side of the section connected with the cushion cap. During the construction, the vertical swirling pile is driven to the design elevation firstly; then a platform formwork is erected on the upper part of the vertical swirling pile, the cushion cap is installed, and the vertical swirling pile is in grouting connection with the cushioncap; then, the inclined sw