摘要
首先,提出约束屈曲支撑-框架结构(BRBF)的设计流程。其次,通过罕遇地震作用下的弹塑性时程分析,得到框架损伤量沿层分布规律。基于此规律和最大名义刚度比,可以确定结构各层应布置的约束屈曲支撑内核的截面面积。最后,对此约束屈曲支撑-框架结构进行非线性动力时程分析。分析结果表明:基于框架损伤量沿层分布规律的约束屈曲支撑分布模式,在强震作用下最大层间位移角分布比较均匀,减震效果良好。
Firstly, it was proposed the design process of the buckling-restrained braces-frame structure（BRBF）. Secondly, the distribution law of the damage along the framework was obtained through the elastic-plastic analysis under rare earthquake. Based on this distribution law and the maximum nominal rigidity ratio, it was determined the core area of the buckling-restrained braces of each storey. Lastly, it was analyzed this buckling-restrained bracesframe structure by the method of non-linear dynamic time-history analysis. The analysis showed that, based on the pattern which of the damage along the framework, distribution of the largest displacement angle of interlayer was more uniform, and good damping effect was gotton.
出处
《钢结构》
2008年第10期5-9,共5页
Steel Construction
基金
国家自然科学基金资助项目(50678078)
关键词
约束屈曲支撑
损伤量
时程分析
名义刚度比
ANSYS
buckling-restrained braces （BRB） damage quantity time-history analysis nominal rigidity ratio ANSYS
