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        鐘善桐
    （哈爾濱建筑大學(xué)  150008）

[提要]  簡要地介紹了鋼管混凝土的耐火性能，分析了影響耐火度的因素以及用有限差分法計(jì)算火災(zāi)時(shí)的構(gòu)件截面的溫度場(chǎng)、構(gòu)件的臨界溫度和臨界時(shí)間、防火涂層厚度的結(jié)果。
[關(guān)鍵詞]  鋼管混凝土耐火性能 截面溫度場(chǎng)  臨界溫度  臨界時(shí)間  防火涂層厚度

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