摘要
薄壁钢梁广泛应用于工业与民用建筑中,对薄壁钢梁的稳定分析,是结构设计领域的一个重要课题。利用大型有限元分析软件ANSYS11.0对设置交叉加劲肋的梁进行非线性有限元分析,在大量有限元分析的基础上,通过对GB50017—2003《钢结构设计规范》中梁的整体稳定性系数φb进行修正,提出交叉加劲肋梁的整体稳定性系数φc,最后给出了简单易行、安全可靠的弯扭屈曲承载力的实用计算公式。
Thin-walled steel beam is widely used in industrial and civil buildings, the overall stability analysis of thin-walled steel beam is an important issue in structure design.The large-scale finite element program ANSYS11.0 is applied to carry out the finite element nonlinear analysis for the beam that sets up the cross stiffener. Based on the finite element nonlinear analysis, the overall stability coefficient φb in GB 50017-2003 is modified, the overall stability coefficient φc of the cross stiffeners is proposed.At last, the practical calculate formula for lateral-torsional buckling resistance of the beam is given on the safe side.
出处
《钢结构》
2010年第7期23-25,40,共4页
Steel Construction
关键词
交叉加劲肋
钢梁
弯扭屈曲
稳定
cross stiffener
steel beam
buckling of bending and torsion
stability
