Annular shear wall-spiral anchor composite structure foundation and construction method

The invention provides an annular shear wall-spiral anchor composite structure foundation and a construction method, and belongs to the technical field of electric power engineering. An upper reinforced concrete slab and a lower reinforced concrete slab are located on the upper portion and the lower portion of an annular shear wall foundation respectively, and prestressed full-length ribs are located in the annular shear wall foundation, penetrate out of the upper reinforced concrete slab and then are connected with flange plates of steel pipe poles through foundation bolts; anchor rods of the spiral anchors penetrate through the lower reinforced concrete slab and then are connected with spiral anchor connectors, the bottoms of the prestressed full-length ribs are connected with the spiral anchor connectors, and the spiral anchor connectors are connected with spiral anchor connector steel bars embedded in the annular shear wall foundation; the embedded depth of the foundation can be effectively reduced, so th