变截面钢梁的整体稳定分析  

A Stability Analysis about Steel Beams with Tapered Sections

作　　者：范圣刚[1] 舒赣平[1] 吕志涛[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《特种结构》2002年第4期36-40,共5页Special Structures

摘　　要：变截面梁的整体稳定研究分析是目前国内外学者所追求的一个研究热点 ,国内对该热点的研究还较缺乏。本文采用直接能量变分法和有限元方法对变截面梁在弹塑性阶段的稳定极限问题进行研究分析 。At present,stability analysis of beams with tapered sections is a study hotspot that many domestic and overseas scholars are pursing.It is lack of study on this hotspot in our country.In this paper,the direct energy variation method and the finite element method are used to obtain the ultimate loads of the tapered beams in the stage of elastic plastic behavior.The main purpose is to derive differential equations of equilibrium for a tapered beam.

关 键 词：变截面梁 稳定性 有限元 弹塑性 钢结构 

分 类 号：TU391[建筑科学—结构工程]