Girder embracing type tower crane foundation steel bearing table and construction method thereof

The invention relates to a girder embracing type tower crane foundation steel bearing table and a construction method thereof. The steel bearing table comprises girder embracing structures and a foundation steel bearing table body, wherein the girder embracing structures are mounted on frame girders of an existing structure and are close to a girder-column joint of the frame girders and a frame column; the girder embracing structures penetrate through the portions, on the two sides of the frame girders, of a floor slab and are clamped and fixed to the frame girders; mounting surfaces are formed on the girder embracing structures and located on the tops of the frame girders; and the foundation steel bearing table body is fixedly mounted on the mounting surfaces. The girder embracing structures are mounted on the frame girders, the foundation steel bearing table body is borne through the girder embracing structures, the girder embracing structures and the frame girders are embraced together to form a whole sabl