摘要
对各国和地区钢结构设计规范中钢梁稳定系数进行对比,考察各国荷载系数与钢梁稳定系数取值的关系;介绍美国和欧洲规定的可靠度分析。结论如下:1)钢梁稳定系数大小排名:加拿大,美国与中国,日本;2)除中国外,各国活荷载系数取值大的,钢梁稳定系数倾向于取平均值;3)美国规范钢梁稳定系数的可靠指标分析表明,对活荷载占比大的钢梁可靠指标不足;4)GB 50017—2003《钢结构设计规范》中钢梁稳定系数取值在世界各国排名第2,但是活荷载系数是世界上最低的。
This paper compared the stability factors of beams in various international codes for design of steel structures, and corresponding load factors. The results of reliability analyses specified by AISC code and EC3 are also introduced. The main conclusions are as below： 1 ） Stability factors from large to small in codes are Canada, AISC and China and Japan; 2） except the Chinese code, the stability factors tend to be average of test results if their live load factors are also greater; 3） the reliability index analysis of steel beam specified by AISC reveals that its safety index is less than required, especially when the live load is predominant; 4） GB 50017--2003 has relatively large stability factors but the smallest live load factors, implying the least safety index.
出处
《工业建筑》
CSCD
北大核心
2014年第3期162-168,67,共8页
Industrial Construction
关键词
钢梁
稳定性
可靠度
热轧截面
焊接截面
steel beam
stability
reliability
hot-rolled section
welded section
