摘要
利用解析法与有限单元法,研究两端简支工字型截面变截面梁的整体稳定性,提出变截面梁的等效长度概念,并对变截面梁的极限破坏荷载的数据进行拟合,得到变截面梁整体稳定系数的实用计算公式。
This paper analyzes the whole stability of nonuniform beam by using analytic and finite element method,and poses the conception of equivalent length. A lot of numerical studies are carried out, whose data are fit to get a set of design formulas for calculating the whole stability coefficients of the beams with nonuniform sections.
出处
《钢结构》
2009年第10期20-23,共4页
Steel Construction
关键词
变截面梁
整体稳定
有限元分析
等效长度
nonuniform beam
integrity stability
finite element analysis
equivalent length
