You use for the steel-frame structure which receives fire in

摘要

PROBLEM TO BE SOLVED: To provide bolt joint part structure capable of impeding a lowering of high temperature strength of a structural steelwork caused by a fireproof bolt even with the use of the fireproof bolt with a high temperature strength of a 600°C level in the case of attaining fireproofing protection-free structure using fireproof steel with excellent high-temperature strength at 800°C-850°C, for instance, in the structural steelwork in a construction field exposed to a fire.;SOLUTION: In this bolt joint part structure with high thermal shielding property, at least a bolt, a nut and a washer in a bolt joint part used for the structural steelwork exposed to a fire are covered with a thermal shield such as a ceramic blanket, a ceramic mold, a ceramic sheet, ceramic paint, other fireproof paint or a metal cover (such as a cap) capable of shielding heat radiation.;COPYRIGHT: (C)2004,JPO