Installation method for circular ring steel truss of experimental building

The invention discloses a mounting method for a circular ring steel truss of an experimental building. The mounting method comprises the following steps: step 1, mounting a supporting column; 2, mounting a main truss: firstly hoisting an in-place lower chord truss, hoisting an in-place upper chord truss, and then mounting diagonal web members; 3, inner ring truss installation: firstly hoisting the in-place lower inner ring truss, hoisting the in-place upper inner ring truss, and then installing diagonal web members; 4, steel beams are installed; 5, outer ring truss installation, specifically, one hoisting unit of the lower outer ring truss is hoisted in place, then a main beam on the lower outer ring truss is temporarily connected with the main truss, and the other hoisting unit is hoisted; an upper outer ring truss is hoisted, and the upper outer ring truss is temporarily connected with the short columns, the main beams on the upper outer ring truss and the main truss; and finally, diagonal web members betwe