摘要
通过对火灾场钢结构框架梁极限抗弯、抗剪承载力的分析,提出采用等效楼面活荷载来描述火灾场对结构极限承载力的削弱,建立了火灾场等效楼面活荷载的计算公式,通过具体算例分析了厚涂型不同保护层厚度的框架钢梁极限抗弯、抗剪承载力及等效楼面活荷载的变化规律。分析结果表明,采用等效楼面活荷载可以直观地描述火灾场对结构构件极限承载能力的削弱,使火灾场钢结构受力分析变得简单、清晰。
Through analyzing the ultimate bending and shearing loads of the steel-frame beam, the equivalent floor live-load is presented to depict the weakening of the ultimate loads of the structure in the fired field. The formula of the equivalent floor live-load has been made. A computational example is given to analyze the changing rules of the ultimate load and equivalent floor live-load. The results show that the equivalent floor living-load can be used to depict the weakening of the ultimate load of structure members more directly and make the mechanics analysis of steel structure in the fired field simpler and clearer.
出处
《海军工程大学学报》
CAS
北大核心
2007年第2期36-40,共5页
Journal of Naval University of Engineering
