[1]姚永红,武振宇.畸变缺陷对冷弯薄壁型钢柱力学性能的影响[J].深圳大学学报理工版,2012,29(No.5(377-470)):421-426.[doi:10.3724/SP.J.1249.2012.05421]
 YAO Yong-hong and WU Zhen-yu.Effects of distortional imperfections on mechanical properties of cold-formed thin-walled steel columns[J].Journal of Shenzhen University Science and Engineering,2012,29(No.5(377-470)):421-426.[doi:10.3724/SP.J.1249.2012.05421]
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畸变缺陷对冷弯薄壁型钢柱力学性能的影响()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第29卷
期数:
2012年No.5(377-470)
页码:
421-426
栏目:
土木建筑工程
出版日期:
2012-09-21

文章信息/Info

Title:
Effects of distortional imperfections on mechanical properties of cold-formed thin-walled steel columns
作者:
姚永红12武振宇1
1)哈尔滨工业大学土木工程学院,哈尔滨 150090
2)安徽理工大学土木建筑学院,安徽淮南 232001
Author(s):
YAO Yong-hong12 and WU Zhen-yu1
1) School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, P. R. China
2) School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui Province, P.R.China
关键词:
结构工程冷弯薄壁型钢卷边槽形截面畸变缺陷畸变屈曲承载力有限元方法
Keywords:
structural engineering cold-formed thin-walled steel lipped channel section distortional imperfection distortional buckling load-carrying capacity finite element method
分类号:
TU 392.1
DOI:
10.3724/SP.J.1249.2012.05421
文献标志码:
A
摘要:
为研究畸变缺陷对腹板V形加劲冷弯薄壁卷边槽钢柱力学性能的影响,测量了20个试件的畸变初始缺陷.介绍了缺陷的测量装置及方法,绘制了畸变缺陷沿试件纵向分布图,给出了所测构件畸变缺陷最大值和平均值.用有限元方法分析畸变缺陷对畸变屈曲承载力和畸变屈曲侧向变形的影响,结果表明,输入的初始缺陷值越大,对应的试件极限承载力越小,畸变屈曲侧向变形越大.数值模拟时分别考虑畸变缺陷最大值以及平均值,与试验结果对比发现,输入试件纵向畸变缺陷平均值所得的承载力以及变形值与试验数据吻合较好.给出了数值计算时畸变缺陷的建议取值方法.
Abstract:
In order to investigate the effects of distortional imperfections on mechanical properties of cold-formed thin wall steel lipped channel columns with an intermediate V-stiffener in the web, the initial distortional imperfections of 20 specimens were measured. After the measurement device and method were introduced, the distribution maps of distortional imperfections along the length of specimens were painted, and the maximum value and the mean of distortional imperfections of the specimens were given. The effect of distortional imperfection on the load-carrying capacity and lateral deformation of distortional buckling were studied by finite element method. The relative lower load-carrying capacity and more significant lateral distortional buckling deformation were obtained by inputting the larger initial distortional imperfection. The maximum and mean distortional imperfections were considered in numerical simulation. It is found that the data of load-carrying capacity and the maximum lateral distortional buckling deformation of specimens show good agreement with the experimental results by importing the mean distortional imperfection. A method to consider the distortional imperfection for numerical simulation is presented.

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备注/Memo

备注/Memo:
Received:2011-04-29;Revised:2011-11-27;Accepted:2012-05-21
Foundation:National Key Technology R&D Program(2006BAJ01B02)
Corresponding author:Professor WU Zhen-yu. E-mail: wuzhenyu@hit.edu.cn
Citation:YAO Yong-hong, WU Zhen-yu. Effects of distortional imperfections on mechanical properties of cold-formed thin-walled steel columns[J]. Journal of Shenzhen University Science and Engineering, 2012, 29(5): 421-426.(in Chinese)
基金项目:国家科技支撑计划资助项目(2006BAJ01B02)
作者简介:姚永红(1982-),男(汉族),安徽省太湖县人,哈尔滨工业大学博士研究生. E-mail: yaoyonghong1982@163.com
引文:姚永红,武振宇. 畸变缺陷对冷弯薄壁型钢柱力学性能的影响[J]. 深圳大学学报理工版,2012,29(5):421-426.
更新日期/Last Update: 2012-09-26