Profiled steel sheet composite floor insulation board fixed installation structure and method

The invention relates to the technical field of buildings, in particular to a profiled steel sheet composite floor insulation board fixed installation structure and method. The structure comprises a concrete wallboard. One face of the concrete wallboard is fixedly connected with one face of a profiled steel sheet, multiple screws are fixed to the face, away from the concrete wallboard, of the profiled steel sheet, one end of each screw is fixedly connected with the profiled steel sheet in a welded mode, and the other ends of the screws penetrate through an insulation board and then are locked and fixed through nuts. The profiled steel sheet composite floor insulation board fixed installation structure and method have the advantages that one end of each screw is fixed to the profiled steel sheet in the welded mode, the other ends of the screws penetrate through the insulation board and then are fixed through the nuts, the structure is simple, installation is convenient, fixation is stable and firm, no damage i