| 摘要 |
PROBLEM TO BE SOLVED: To provide the heat insulating column structure of a steel structure permitting a structure without fireproof coating while solving problems on a construction cost for fireproof coating, environment, appearance, and the like by using steel high in high temperature strength at 600-800°C even when the fire temperature of a room exceeds 1000°C like an office fire. SOLUTION: In the column structure constituting the steel structure exposed to the fire, the column is formed of the steel high in high temperature strength, on which a high temperature yield strength ratio p (high temperature yield strength/ordinary temperature yield strength) obtained by making high temperature yield strength dimensionless by ordinary temperature yield strength, satisfies p≥-0.0029×T+2.48 when the steel temperature T(°C) is in a range of 600-800°C. Further, the column is thermally shielded with a semi-noncombustible finishing board material. COPYRIGHT: (C)2005,JPO&NCIPI
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