Anti-floating structure of large-diameter steel pipe in foundation slab and construction method of anti-floating structure

The invention provides an anti-floating structure of a large-diameter steel pipe in a foundation slab and a construction method of the anti-floating structure. The anti-floating structure comprises asupporting frame for supporting the large-diameter steel pipe, an anti-floating pile buried in a foundation, a rigid tying part installed on the large-diameter steel pipe and ballast water, wherein the supporting frame is installed on the foundation, the large-diameter steel pipe is embedded in the layered cast foundation slab, the large-diameter steel pipe is provided with a closed end and an open end, and the open end extends upwards above the foundation slab; the rigid tying part is fixedly connected to the anti-floating pile; and the ballast water is poured into the open end in batches. The anti-floating structure and the construction method solve the problem that it is difficult to accurately control the elevation of the large-diameter steel pipe embedded in the foundation slab duringpouring. 本发明提供了一种基础底板中的大直