高强冷弯薄壁型钢压杆试验及直接强度法计算分析

何保康; 蒋路; 刘艳军; 周天华; 王彦敏

doi:10.13204/j.gyjz200808019

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高强冷弯薄壁型钢压杆试验及直接强度法计算分析

doi: 10.13204/j.gyjz200808019

1.
1. 西安建筑科技大学,西安 710055;
2.
2. 长安大学,西安 710061;
3.
3. 博思格建筑系统住宅部,上海 201613

基金项目:

建设部科学技术项目/技术开发项目(0231.3)。

详细信息

作者简介:
何保康男 1936年9月出生教授.E-mail:hebk260@163.com

计量
- 文章访问数: 78
- HTML全文浏览量: 12
- PDF下载量: 75
- 被引次数: 0
出版历程
- 收稿日期: 2007-10-20
- 刊出日期: 2008-08-20

EXPERIMENT OF HIGH STRENGTH COLD-FORMED THIN-WALLED STEEL AXIAL COMPRESSED COLUMNS AND ANALYSES OF ITS BEARING CAPACITY BY DIRECT STRENGTH METHOD

1.
1. Xi’an University of Architecture and Technology Xi’an 710055;
2.
2. Changan University Xi’an 710061;
3.
3. Bluescope Steel Building Shanghai 201613

摘要

摘要: 采用直接强度法分析了近期完成的62根550 MPa高强冷弯薄壁型钢轴压柱的试验结果,提出了采用折减材料屈服强度为0.85fy,并根据修正长细比c=0.85fy/235查《冷弯薄壁型钢结构技术规范》(GB 50018-2002)中Q235钢稳定系数表来计算高强冷弯型钢轴压构件稳定承载力的计算方法。该建议方法计算值与试验结果吻合较好且偏于安全。
- 高强冷弯型钢 /
- 压杆试验 /
- 直接强度法 /
- 局部屈曲 /
- 整体屈曲
Abstract: The experimental results of 62 specimens with 550 MPa high strength cold-formed thin-wall steel under axial compression are analyzed by direct strength method(DSM).The bearing capacities of high strength cold-formed thin-walled steel columns under axial compression are calculated by reduced yield strength 0.85f_y and revised slenderness ratio _c=0.85f_y/235 for the stability coefficient from the stability coefficient table of Q235 in Technical Code for Cold-Formed Thin Walled Section Steel Stucture(GB 50018-2002).The calculated results by the suggested method are closed well to the test results.
- cold-formed high strength steel /
- columns experiment /
- direct strength method /
- local buckling /
- overall buckling

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参考文献(9)

[2] Yang Deman,Hancock G J.Compression Tests of Cold-Reduced High Strength Steel Sections:l-Stub Columns.Journal of Structural Engineering,2004,130(11):1 772-1 781

CB 50018-2002 冷弯薄壁型钢结构技术规范

[3] Schafer B,Pekoz T.Laterally Braced Cold-Formed Steel Flexurat Members with Edge Stiffened Elements.Journal of Structural Engineering,ASCE,1999,125(2):118-127

[4] Hancock G J,Murray T M,Ellifritt D S,et at.Cold-Formed Steel Structures to the AISI Specification.Marcel Dekker,New York:2001

[5] Design of Cold-Formed Steel Structural Members Using the Direct Strength Method.Appendix 1 of NAS 2004.American Iron and Steel Institute,Canadian Standards Association,2004

[6] 周天华,周绪红,何保康,等.G550级高强薄板钢材的材性及应用.建筑科学与工程学报,2005,22(2):43-46

[7] Schafer B W.Elastic Buckling Analysis of Thin-Walled Members by Finite Strip Analysis.CUFSM v2.6,2002

[8] 张中权.冷弯薄壁型钢轴心受压构件的稳定性.建筑结构学报,1991(2):72-79

[9] 沈祖炎,李元齐,王磊,等.屈服强度550 MPa高强冷弯薄壁型钢轴心受压构件可靠度分析.建筑结构学报,2006,27(3):26-33

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