[1]杨应华,张振彬.Q460高强钢焊接工形截面梁整体稳定分析[J].西安建筑科技大学学报:自然科学版,2014,46(05):651-659.[doi:10.15986/j.1006-7930.2004.05.006]
　YANG Yinghua,ZHANG Zhenbin.Analysis of lateral-torsional buckling of Q460 highstrength steel welded I-section beams[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2014,46(05):651-659.[doi:10.15986/j.1006-7930.2004.05.006]
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Q460高强钢焊接工形截面梁整体稳定分析()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
46
期数:
2014年05期
页码:
651-659
栏目:
出版日期:
2014-10-31

文章信息/Info

Title:
Analysis of lateral-torsional buckling of Q460 high
strength steel welded I-section beams
文章编号:
1006-7930(2014)05-0651-09
作者:
杨应华; 张振彬
(西安建筑科技大学土木工程学院,陕西 西安710055)
Author(s):
YANG Yinghua; ZHANG Zhenbin
(School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’ an 710055, China)
关键词:
Q460高强钢; 焊接工形截面; 受弯构件; 整体稳定; 稳定系数
Keywords:
Q460 high strength steel;  welded I-section;  beams;  lateral-torsional buckling;  stability factor
分类号:
TU392.4
DOI:
10.15986/j.1006-7930.2004.05.006
文献标志码:
A
摘要:
Q460高强钢焊接梁的残余应力与普通钢焊接梁差别较大，其稳定承载力将与普通钢梁有较大差别，普通钢梁的稳定系
数也就难于直接应用于高强钢受弯构件．论文选用了六种截面形式、三种荷载类型以及40～240之间的长细比，应用ANSYS有
限元对Q460高强钢焊接工形截面梁的整体稳定性能进行了较全面的分析．研究表明，Q460高强钢焊接梁的稳定承载力较普通
钢焊接梁有较大提高，为此论文提出了针对Q460高强钢焊接梁稳定设计计算方法，具有较好的精度，可供工程实际参考．
Abstract:
The residual stresses of Q460 high strength steel welded I-section beams are quite different from those of the mild steel welded I-section beams, and the lateral-torsional buckling coefficient of the former is accordingly not the same as that of the later. Employing ANSYS FEM, the paper thoroughly analyzed the lateral-torsional buckling of Q460 high strength steel welded I-section beams, taking into account six welded I-sections, three loading conditions and with the beam slenderness ratio varying from 20-240. It is shown that the lateral-torsional buckling capacity of Q460 high strength steel welded I-section beams increased greatly compared to that of mild steel welded I-section beams. Therefore, a new formula of lateral-torsional buckling coefficient for Q460 high strength steel welded I-section beams was proposed. Confirmed by the FE analysis, the new formula is accurate and safe for practical use

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备注/Memo

备注/Memo:
收稿日期：2014-03-27 修改稿日期：2014-09-25
作者简介：杨应华（1965-），男，博士，教授，博士生导师，主要从事钢结构方面的研究．E-mail：yhyang@xauat.edu.cn
更新日期/Last Update: 2015-10-10