|本期目录/Table of Contents|

[1]周绪红,李喆,刘永健,等.冷弯薄壁型钢拼合截面柱轴压承载力计算[J].建筑科学与工程学报,2012,29(04):1-6.
 ZHOU Xu-hong,LI Zhe,LIU Yong-jian,et al.Calculation Method for Bearing Capacity of Cold-formed Steel Built-up Columns Under Axial Compression[J].Journal of Architecture and Civil Engineering,2012,29(04):1-6.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
29卷
期数:
2012年04期
页码:
1-6
栏目:
出版日期:
2012-12-30

文章信息/Info

Title:
Calculation Method for Bearing Capacity of Cold-formed Steel Built-up Columns Under Axial Compression
作者:
周绪红12李喆1刘永健1石宇1
1. 长安大学 建筑工程学院,陕西 西安 710061; 2. 兰州大学 土木工程与力学学院,甘肃 兰州 730000
Author(s):
ZHOU Xu-hong12 LI Zhe1 LIU Yong-jian1 SHI Yu1
1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, Gansu, China
关键词:
冷弯薄壁型钢 轴压承载力 数值分析 拼合效应 屈曲模态
Keywords:
cold-formed steel bearing capacity under axial compression numerical analysis built-up effect bucking mode
分类号:
TU392.1
DOI:
-
文献标志码:
A
摘要:
为了研究冷弯薄壁型钢拼合截面柱的轴压承载力,对各国有关冷弯薄壁型钢拼合截面柱的轴压试验进行了ANSYS有限元模拟分析,有限元计算结果与试验结果吻合良好,从而验证了有限元方法的正确性。采用有限元方法分析了构件截面形式、截面尺寸以及长细比对冷弯薄壁型钢拼合截面柱拼合效应的影响,提出了冷弯薄壁型钢拼合截面柱轴压承载力的简化计算方法。分析结果表明:随着长细比的增大,拼合截面柱的拼合效应随之增大。对于主要通过螺钉将腹板进行拼合的构件,当翼缘宽厚比一定时,随着截面宽高比的增大,腹板拼合的整体性增强,从而使拼合效应增大,而截面面积的改变对拼合效应的影响则不是很明显。
Abstract:
In order to investigate bearing capacity of cold-formed steel built-up columns under axial compression, authors used ANSYS finite element program to analyze the cold-formed steel built-up columns at home and abroad. Compared with experimental results, the validity of the finite element method(FEM)was verified. Furthermore, a detailed parametric study by FEM was carried out to mainly determine the influence of cross-section form, cross-section dimension and slenderness ratio of component for the built-up effect. The simplified calculation method to the bearing capacity of cold-formed steel built-up columns under axial compression was extracted. The analytical results show that with the increase of the slenderness ratio, the built-up effect improves. As for these columns connected with screws through web, when width-thickness ratio of flange is certain, with the increase of width-height ratio of cross-section, the integrity of the built-up web increases, which leads the built-up effect to strengthen. But the influences of different areas of cross-sections are not so obvious.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-10-12
基金项目:国家自然科学基金项目(51108033); 中央高校基本科研业务费专项资金项目(CHD2012ZD006)
作者简介:周绪红(1956-),男,湖南南县人,教授,博士研究生导师,中国工程院院士,工学博士,E-mail:zhouxuhong@126.com。
更新日期/Last Update: 2012-12-20