Fire-resistant covering structure, fire-resistant covering material and construction method of fire-resistant covering structure

The invention relates to a fire-resistant covering structure, a fire-resistant covering material and a construction method of the fire-resistant covering structure, and aims to prevent the fire-resistant covering material from floating from a steel skeleton constituting a frame column or slipping off due to dead weight. The present invention is a fire-resistant covering structure (1) comprising asteel skeleton (10) constituting a frame column of a fire-resistant building and a pair of fire-resistant covering materials (20) covering the steel skeleton (10), the steel skeleton (10) comprising:a pair of flanges (11); a coupling member (12) that couples the pair of flanges (11); and protruding strips (13) that are provided on both surfaces of the connecting piece (12) and extend parallel tothe pair of flanges (11). Each of the pair of refractory covering materials (20) is provided with three rows of cut-in parts (21) and (22) which respectively accommodate the pair of flanges (11) and the protruding strips (13) o