Construction method for suspended building structure

The invention discloses a construction method for a suspended building structure. The method comprises the following steps that S1, a peripheral core tube bearing platform foundation region is excavated, a peripheral core tube bearing platform foundation is constructed at the foundation region, and a vertical load-bearing structure is installed on the core tube bearing platform foundation; S2, a support jig is erected at a position, outside the core tube bearing platform foundation, of the foundation region; S3, a roof truss is installed above the support jig and the vertical load-bearing structure, and the support jig is removed after the roof truss is installed; and S4, a floor steel structure is installed below the roof truss from top to bottom in a layer-by-layer mode. According to themethod, construction is carried out by obeying the structure stress sequence, actual deformation and stress conditions of the suspended structure are convenient to obtain, the structure safety in theconstruction process is e