多国结构抗火规范关于H型钢柱的比较和分析  

Comparison and Analysis on H-Shaped Steel Columns in Different Codes of Fire Resistance

作　　者：葛勇[1] 王卫永[1,2] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400030

出　　处：《建筑钢结构进展》2012年第2期59-64,共6页Progress in Steel Building Structures

基　　金：国家自然科学基金(51008320);教育部高等学校博士学科点科研基金(20090191120032)

摘　　要：介绍了美国、英国、欧洲、澳大利亚和中国的钢结构抗火设计规范中关于受压构件的计算方法,并对它们的区别和联系进行了分析和论述。通过一个算例给出了各国规范的计算结果,并将它们的计算结果进行了对比。研究表明:美国、欧洲和中国规范的钢柱稳定系数差别较大;欧洲、英国和中国规范计算所得的受压构件的临界温度差别很小,澳大利亚规范和美国规范的临界温度偏低;中国规范和欧洲规范的无保护层钢构件耐火时间基本上相同,澳大利亚规范结果偏低,英国规范结果偏高;欧洲和中国规范的有轻质保护层受压钢构件耐火时间基本相同,美国规范耐火时间偏短。The design method of compression members at elevated temperatures in American, British, Europe, Australian and Chinese codes were presented. The differences and relationship between these codes were analyzed and discussed. A numerical example was given, and the calculation results of these codes were obtained and the comparison between them was made. It is shown that there is a relatively large difference on the stability factor of steel columns predicted by American, Europe and Chinese codes. There is a slight difference on the critical temperatures of steel columns predicted by Europe, British and Chinese codes, and the critical temperatures predicted by American and Australian codes are lower than by other codes. The fire-resistant periods of unprotected steel columns predicted by Europe and Chinese codes are similar, and the fire-resistant pertiods predicted by Australian code is shorter, while predicted by British code is longer. The fire resistant periods of protected steel columns predicted by Europe and Chinese codes are in agreement,while predicted by American code is shorter.

关 键 词：钢结构 抗火设计 规范 钢柱 

分 类 号：TU391[建筑科学—结构工程] TU352.5