钟善桐
    （哈尔滨建筑大学  150008）

[提要]  简要地介绍了钢管混凝土的耐火性能，分析了影响耐火度的因素以及用有限差分法计算火灾时的构件截面的温度场、构件的临界温度和临界时间、防火涂层厚度的结果。
[关键词]  钢管混凝土耐火性能 截面温度场  临界温度  临界时间  防火涂层厚度

The behaviors of fire resistance of CFST are introduced briefly, the effect factors are analyzed also. The
finite difference method is adopted to calculate the temperature field on cross-section of the column, the critical temperature and the critical time, the thickness of fire resisting covering of CFST columns, All of the results were verified by experiments.
Keywords: fire resistance behaviors; temperature field; critical temperature; critical time; fire resisting covering