国内外规范中对钢结构防火保护层的研究

摘要

The paper introduces the determination formula of steel structure fire-proofing protection layer of domestic and international steel struc- ture fire-proofing norms, calculates the minimum protection layer thickness of typical section under various fire-proofing limitations, compares the domestic calculation results to international calculation results, and finds out that there is little difference between the domestic method and inter- national method. In addition, there is a great impact of section shape coefficient upon minimum protection layer thickness of the structure.%介绍了国内外钢结构抗火规范中钢结构防火保护层的确定公式，通过计算典型截面在不同耐火极限下的最小保护层厚度，将我国规范的计算结果与国外规范的结果进行了比较，比较结果显示我国规范推荐的方法与国外规范推荐的方法确定的最小保护层相差很小，计算同时表明构件的最小保护层厚度受截面形状系数的影响很大。