新型冷弯箱形组合截面受弯构件力学性能研究

武胜; 张素梅

doi:10.13204/j.gyjz200802024

新型冷弯箱形组合截面受弯构件力学性能研究

doi: 10.13204/j.gyjz200802024

武胜,
张素梅

1.
哈尔滨工业大学土木工程学院,哈尔滨 150090

基金项目:

黑龙江省科学技术攻关重点项目资助

详细信息

作者简介:
武胜,男,1976年9月出生,博士研究生.E-mail:jackiEbEssiE@163.com

计量
- 文章访问数: 65
- HTML全文浏览量: 9
- PDF下载量: 72
- 被引次数: 0
出版历程
- 收稿日期: 2007-08-20
- 刊出日期: 2008-02-20

MECHANICAL BEHAVIOR OF TWO NEWKINDS OF COLD-FORMED BOX COMPOSITE SECTION BEND MEMBERS

1.
School of Civil Engineering,Harbin Institute of Technology,Harbin 150090

摘要

摘要: 冷弯薄壁双轴对称箱形截面具有形心、弯心重合的特点,与单轴对称开口截面相比具有抗弯、扭刚度大的优点。基于箱形截面的以上特点,应用冷弯形构件两两电弧点焊连接,形成两种新型箱形组合截面翼缘对焊箱形组合截面和翼缘叠焊箱形组合截面。采用非线性有限元的分析方法,通过对两种新型截面与相同参数的单肢形构件的细致比较分析,以及单一参数变化条件下新型截面构件的屈曲模式、变形过程、弯矩-曲率关系等方面的分析,全面研究两种新型截面受弯构件的静力学性能。研究表明:两种新型截面构件与其单肢形构件相比,具有抗弯承载力明显提高,构件不会出现畸变屈曲、局部变形小等性能优势,可以深入研究并合理推广使用。
- 冷弯薄壁型钢 /
- 受弯构件 /
- 力学性能 /
- 有限元分析
Abstract: Box section has the special features both its mass center and moment center unification as double symmetry coldformed section and its outstanding advantage in moment and torsion rigidity.According to which, it is put forward two new kinds of cold-formed box composite sections-flanges opposite welded box composite section and flanges lapped welded box composite section.On the basis of precise finite element model, nonlinear finite element method is adopted to study the static behaviors including buckling modes, deformed process, moment-curvature curves of two new kinds of section members under flexural loads.The buckling behaviors and static behaviors of the two kinds of sections are analyzed completely.It is compared every side of static behavior with those of channel sections that have the same dimensions.The two new type sections have some superior static behaviors including higher ultimate bending capacity, distortional buckling can escape and smaller local buckling in the member are verified.These two new kinds of sections can go deep into the experiment study as to be used in the practical engineering.
- cold-formed thin-walled steel /
- bend members /
- mechanical behavior /
- finite element analysis (FEA)

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参考文献(11)

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