Arc-shaped flange cross column steel embedded part and construction method thereof

The invention provides an arc-shaped flange cross column steel embedded part. The arc-shaped flange cross column steel embedded part comprises a lower anchoring part and a steel pipe column. The lower anchoring part comprises a plurality of annular positioning plates and a plurality of L-shaped anchor bolts which are arranged at intervals in the vertical direction, and each anchor bolt comprises a vertical section penetrating through and fixedly connected with the corresponding positioning plate and a horizontal section facing the axis of the corresponding positioning plate; the lower anchoring part is supported on a bearing column and is fixed by pouring a positioning concrete section; an anchor plate is arranged at the lower end of the steel pipe column, a plurality of strip-shaped notches are formed in the position, close to the anchor plate, of the lower portion of the steel pipe column, each strip-shaped notch is arranged around the axis of the steel pipe column, arc-shaped flanges are formed between any