摘要
为考察支撑长细比对中心支撑钢框架结构影响系数的影响,设计支撑长细比不同的4个人字形中心支撑钢框架并通过增量动力分析计算其结构影响系数。结果表明,对于按照我国规范设计的普通中心支撑钢框架,随着支撑长细比的增加,结构影响系数R逐渐减小;而对于欧美规范中的特殊中心支撑钢框架则并非如此。
In order to investigate the influence of brace slenderness on the response modification factors of chevron concentrically braced steel frames （CBSF）, four chevron CBSFs with difference brace slenderness were designed and incremental dynamic analysis （IDA） was carried out to get the response modification factor （R）. The results indicate that for the ordinary CBSFs designed according to Chinese specifications, R is decreased with the increasing of brace slenderness, but this is not true for the specially CBSF designed according to American and European specifications.
出处
《钢结构》
2013年第7期5-10,23,共7页
Steel Construction
基金
国家自然科学基金资助项目(50578099)
关键词
支撑长细比
结构影响系数
中心支撑钢框架
增量动力分析
brace slenderness
response modification factor （R）
concentrically braced steel frames （CBSF）
incremental dynamic analysis （IDA）
