451 火災時における鋼構造架構の構造安定性(S40-2 火災科学とその応用(2),S40 火災科学とその応用)  [in Japanese] 451 Structural Stability of Steel Frames during Fire  [in Japanese]

A series of structural analysis during fire is conducted in this paper. The purposes of the analysis are a clarification of the relation between performance of fire resistance and earthquake resistance, a quantification of redundancy for structural steel frames exposed compartment fire. The temperature at ultimate state of a steel frame during fire is not always equivalent to the one at a local failure such as column backing taking place. On the condition that neighboring members possess an enough bearing capacity, the temperature of failure is leaded to higher ultimate temperature owing to stress redistribution. Steel frame designed for larger seismic load has much redundancy against vertical load capacity.