Mounting structure of stiff structure steel column

The invention discloses a stiff structure steel column mounting structure which comprises a column foot support and a stiff structure steel column body, the column foot support comprises a regular hexagon top, angle steel supporting legs and supporting leg reinforcing plates, two anchor bolt supports are welded to the top of the regular hexagon top, and the stiff structure steel column body is connected to the tops of the anchor bolt supports through bolts. Fixing blocks are fixed to the corners of the top of the regular hexagon top, square grooves are formed in the middles of the bottoms of the fixing blocks, main threaded grooves are formed in the middles of the tops of the square grooves, positioning screws are fixed to the middles of the tops of the main threaded grooves, core blocks are welded to the middles of the tops of the angle steel supporting legs, and main threaded rods matched with the main threaded grooves are fixed to the middles of the tops of the core blocks; a positioning threaded groove ma