Bifurcation and large-deflection analyses of thin-walled beam-columns with non-symmetric open-sections

被引：44
|
作者：
Liu, Si-Wei [1 ,2 ]
Ziemian, Ronald D. [3 ]
Chen, Liang [2 ]
Chan, Siu-Lai [2 ]
机构：
[1] Sun Yat Sen Univ, Sch Civil Engn, 135 Xingang Xi Rd, Guangzhou 510275, Guangdong, Peoples R China
[2] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China
[3] Bucknell Univ, Dept Civil & Environm Engn, Lewisburg, PA 17837 USA
来源：
THIN-WALLED STRUCTURES | 2018年 / 132卷
关键词：
Steel; Thin-walled; Warping; Wagner effects; Buckling; Elements; Geometric nonlinear analysis; Open sections; NONLINEAR-ANALYSIS; SPATIAL STABILITY; I-BEAMS; ELEMENT; FORMULATION; BEHAVIOR;
D O I：
10.1016/j.tws.2018.07.044
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Non-symmetric thin-walled open-sections are used extensively in metal structures. The behaviour of such sections is usually complex because their shear centre and centroid do not coincide, and as a result, they are often susceptible to lateral-torsional and/or flexural-torsional buckling. This paper develops an efficient and robust computational framework for practical application, including a refined beam-column element for non-symmetric sections, a cross-section analysis algorithm for determining pertinent properties of open-sections, and an Updated-Lagrangian (UL) solution method for large deflection analysis. Details of the derivation of element stiffness matrices and the related numerical procedures are provided. Several examples are given that demonstrate accurate results from its implementation within the educational structural analysis software MASTAN2.
引用
收藏
页码：287 / 301
页数：15
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