|本期目录/Table of Contents|

[1]刘向斌,周天华,聂少锋,等.冷弯薄壁型钢开口三肢拼合立柱轴压性能有限元分析[J].建筑科学与工程学报,2011,28(03):119-126.
 LIU Xiang-bin,ZHOU Tian-hua,NIE Shao-feng,et al.Finite Element Analysis of Cold-formed Thin-walled Steel Three Open Limbs Built-up Columns Under Axial Compression[J].Journal of Architecture and Civil Engineering,2011,28(03):119-126.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
28卷
期数:
2011年03期
页码:
119-126
栏目:
出版日期:
2011-09-20

文章信息/Info

Title:
Finite Element Analysis of Cold-formed Thin-walled Steel Three Open Limbs Built-up Columns Under Axial Compression
作者:
刘向斌1周天华2聂少锋2吴函恒2
1. 长安大学 基建处,陕西 西安 710064; 2. 长安大学 建筑工程学院,陕西 西安 710061
Author(s):
LIU Xiang-bin1 ZHOU Tian-hua2 NIE Shao-feng2 WU Han-heng2
1. Infrastructure Projects Office, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China
关键词:
冷弯薄壁型钢 拼合立柱 极限承载力 非线性有限元 轴压性能
Keywords:
cold-formed thin-walled steel built-up column ultimate bearing capacity nonlinear finite element axial compression performance
分类号:
TU392.1
DOI:
-
文献标志码:
A
摘要:
建立了考虑材料、几何和接触非线性的有限元模型,利用ANSYS有限元程序分析了长细比、螺钉连接间距、截面板件最大宽厚比对冷弯薄壁型钢开口三肢拼合立柱轴压性能的影响。结果表明:立柱长细比对A、B两类截面拼合立柱轴压承载力和轴压性能有很大影响,随着立柱长细比的增大,立柱轴压极限承载力逐渐降低; 当螺钉连接间距为450、300、150 mm时,A、B两类截面拼合立柱轴压极限承载力和刚度变化均不大; 由于基本构件板材厚度不同引起截面板件最大宽厚比的不同,对A、B两类截面3种长度的拼合立柱的承载力和刚度影响很大; 对于A、B两类截面立柱,当立柱长度和截面厚度相同时,基本构件腹板高度由89 mm增加到140 mm,拼合截面轴压立柱轴压极限承载力变化不大。
Abstract:
The finite element model involving materials nonlinearity, geometric nonlinearity and contact nonlinearity was established, the influences of slenderness ratios, screw connection spacings, maximum width-thickness ratios on cold-formed thin-walled steel three open limbs built-up columns under axial compression were analyzed by using ANSYS finite element program. Results show that the slenderness ratio has great influence on the bearing capacity of axial compression and the axial compression performance for class A, B section built-up columns, with the increase of the column slenderness ratio, the ultimate bearing capacity gradually decreases. For two class section built-up columns, when screw connection spacing has arranged 450,300,150 mm, the ultimate bearing capacity of axial compression and the rigidity are little affected. For the three different lengths to the two class section built-up columns, as different thicknesses of the basic component plates cause different width-thickness ratios of the section, the ultimate bearing capacity of axial compression and the rigidity are obviously affected. When length and thickness of class A, B section built-up columns are same, and the basic component web height is increased from 89 mm to 140 mm, the ultimate bearing capacity of axial compression is not obviously improved.

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备注/Memo

备注/Memo:
收稿日期:2011-06-20
基金项目:陕西省自然科学基础研究计划项目(SJ08E211)
作者简介:刘向斌(1983-),男,陕西凤翔人,工学硕士,E-mail:lbx_818@163.com。
更新日期/Last Update: 2011-09-20