Stability of tapered and stepped steel columns with initial imperfections

被引：39
|
作者：
Raftoyiannis, LG [1 ]
Ermopoulos, JC [1 ]
机构：
[1] Natl Tech Univ Athens, Dept Civil Engn, Iroon Polytech, Athens 15780, Greece
来源：
ENGINEERING STRUCTURES | 2005年 / 27卷 / 08期
关键词：
steel columns; tapered; stepped sections; stability; initial imperfections;
D O I：
10.1016/j.engstruct.2005.03.009
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The elastic stability of eccentrically loaded steel columns with tapered and stepped cross-section and initial imperfection is studied herein. The stability problem is formulated in a manner covering most cases met in design applications. The formulation presented herewith is based on the exact solution of the governing equation for buckling of columns with variable cross-section. A parabolic shape is assumed for the initial imperfection according to EC3 provisions. A plasticity criterion is applied to determine material failure in the buckled configuration. Nonlinear finite element analyses are performed to verify the analytical results. The findings presented in this study can be used for the design of such type of imperfect steel columns. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1248 / 1257
页数：10
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