Ultrahigh jacking, supporting and reinforcing device for bridge

The utility model discloses a bridge ultrahigh jacking supporting and reinforcing device which comprises a supporting and reinforcing steel frame and a fixed steel column foot embedded part, the fixed steel column foot embedded part provides a mounting position for the supporting and reinforcing steel frame, and the supporting and reinforcing steel frame is formed by welding a steel column, a steel beam and an inclined strut; the fixed steel column foot embedded part comprises an embedded part steel plate and a chemical anchor bolt, and the chemical anchor bolt is implanted into the embedded part steel plate; and square timbers or wood wedges are also plugged in the connecting gaps between the supporting and reinforcing steel frame and the steel supporting pieces. Construction is convenient, tedious construction in the prior art is omitted, practicability is higher, the supporting and reinforcing steel frame is fixed in a welded mode, the gap between the supporting and reinforcing steel frame and the steel su