摘要
文章论述了在规范 ISO834或 GB 9978- 88规定的标准升温曲线升温作用下钢管混凝土柱耐火极限的影响因素 ,给出了不同耐火极限情况下防火保护层厚度的确定方法 ,说明了在进行钢管混凝土柱的抗火设计时 ,只需进行适当的防火涂料保护 ,即可达到《高层民用建筑设计防火规范》(GB5 0 0 4 5 - 95 )对柱结构所要求的耐火极限。《高层民用建筑设计防火规范》(GB 5 0 0 4 5 - 95 )中规定的对钢结构柱防火保护层厚度的确定方法不适合于钢管混凝土。
The influences of several parameters on the fire resistance of concrete-filled steel tubular under ISO-834 or GB 9978-88 Standard Fire is briefly introduced in the paper. It also gives the method for determining the thickness of fire protection cover under different fire resistance ratings. It indicates that the columns can meet the design fire rating required by the Code for Design of High-rise Building Fire Protection (GB50045-95) with the protection of the proper fire coating. The determination methods for the protection thickness of the cover for steel structure columns are unsuitable for composite columns.
出处
《消防科学与技术》
CAS
2001年第6期1-4,共4页
Fire Science and Technology
基金
国家自然科学基金
国家教育部优秀年轻教师基金
公安部科研项目的资助
关键词
钢管混凝土
柱
防火涂料
保护层厚度
building fire resistant element, temperature-time standard, fire resistance rating, fire resistant coating
