双层单跨支撑框架弹性稳定分析的有限元方法  

Elastic Stability Study of Frames Braced by Vertical Beam with Finite Element Method

作　　者：陈红英[1] 

机构地区：[1]青海大学建工系,青海西宁810016

出　　处：《青海大学学报（自然科学版）》2001年第2期6-10,共5页Journal of Qinghai University(Natural Science)

摘　　要：用有限元方法对双层单跨支撑框架进行弹性整体稳定分析 ,得到了从无支撑框架过渡到完全支撑框架时相应的柱计算长度系数 ;非完全支撑框架和完全支撑框架间存在一个门槛刚度 ,该刚度值可作为框架有侧移和无侧移的区分标准。The elastic stability of steel frame with bending-type system is studied in this paper.By use of the finite element method,the effective length factor of columns in unbraced frames,braced frames and partially-braced frames are obtained.The threshold stiffness of the bracing may be used as a criteria to judge the sway and non-sway frames in stability calculation.

关 键 词：稳定性 支撑 框架 有限元法 钢结构 侧移 

分 类 号：TU391[建筑科学—结构工程]