受弯H型面钢梁腹板屈曲后强度的简化计算方法  

Simple calculation of H-shaped section beam post-buckling strength

作　　者：宁海永[1] 张宁[1] 唐开春[1] 

机构地区：[1]中国纺织工业设计院,北京100037

出　　处：《建筑结构》2009年第S2期332-334,共3页Building Structure

摘　　要：在非动力荷载直接作用的钢结构工程中,当梁腹板高厚比较大时,一般要考虑腹板屈曲后强度。文中详细论述了屈曲后强度的适用条件、机理和有效刚度计算方法,文中的计算方法与《钢结构设计规范》(GB50017—2003)中的计算方法进行比较,计算结构基本一致,能满足工程设计的精度要求,对实际工程设计具有参考意义。According to the flexural beam in steel buildings,if it's without dynamic loading,and when the web slenderness ratio of beam is bigger,the post-buckling strength of web plate should be considered.In this article,the applicable condition,mechanism and the post-buckling effective stiffness will be discussed.Comparing it with the method in the code for design of steel structures(GB 50017-2003) of china,the results are approaching basically.It can be reference for the practical engineering design.

关 键 词：屈曲后强度 钢结构 局部稳定 有效刚度 

分 类 号：TU391[建筑科学—结构工程]