U肋加劲板焊接残余应力的一种简化计算方法

赵秋; 吴冲

doi:10.6052/j.issn.1000-4750.2010.12.0936

U肋加劲板焊接残余应力的一种简化计算方法

赵秋^1,,
吴冲²

1.
福州大学土木工程学院, 福建, 福州 350108;
2.
同济大学桥梁工程系, 上海 200092

基金项目: 国家科技支撑计划项目(2009BAG15B02);国家自然科学基金项目(51108087)

详细信息

作者简介:
吴冲(1962-),男,福建宁化人,教授,博士,博导,从事桥梁工程研究(E-mail:cwu@mail.tongji.edu.cn).

通讯作者:
赵秋(1976-),男,吉林通榆人,讲师,博士,从事桥梁工程研究(E-mail:zhaoqiu@fzu.edu.cn).

中图分类号: TU318;U442
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出版历程
- 收稿日期: 2010-12-24
- 修回日期: 2011-04-07
- 刊出日期: 2012-10-24

A SIMPLIFIED CALCULATION METHOD OF WELDING RESIDUAL STRESS OF U-RIB STIFFENED PLATES

ZHAO Qiu^1,,
WU Chong²

1.
School of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China;
2.
Department of Bridge Engineering, Tongji University, Shanghai 200092, China

摘要

摘要: 基于焊接残余应力数值模拟方法, 分析了U 肋加劲板各组成板件的板宽、板厚对焊接残余应力分布的影响, 揭示了U 肋与母板残余应力合力的分配规律, 提出了针对不同构造尺寸的U 肋加劲板焊接残余应力分布简化计算方法。研究结果表明:各组成板件的板宽变化对焊接残余拉应力的分布影响较小, 但对焊接残余压应力的大小影响较大;U 肋与母板的板厚比对U 肋与母板残余应力的分配比例影响较大。U 肋加劲板受压承载力计算时, 焊接残余应力分布可以采用简化方法计算, 其结果与根据数值模拟得到的焊接残余应力分布计算的结果基本一致。
- 钢桥 /
- 焊接残余应力 /
- 简化计算方法 /
- U 肋加劲板 /
- 有限元方法
Abstract: Distributions of the residual stress of U-rib stiffened plates and influences of some factors such as width and thickness of plates were investigated by numerical analyses. A simplified calculation method of the residual stress of U-rib stiffened plates was proposed. The result shows that the width of plates has little influence on residual tension stress, but it has a major effect on residual compression stress. The residual stress distribution in plates and U-rib stiffeners was influenced by the ratio of thickness of plate and U-rib stiffeners. In the analyses of compression capacity of U-rib stiffened plates, the simplified distribution of welding residual stress can be used and the results were very close to that by the numerical simulation method.
- steel bridge /
- welding residual stress /
- simplified calculation method /
- U-rib stiffened plate /
- FEM

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参考文献(10)

[1]	大橋治一, 依田照彦, 樋口康三. 長大斜張橋鋼床版の初期不整の実測データとその圧縮強度の評価[J].土木学会論文集, 1996, 549(I-37): 55-64.Harukazu Ohashi, Teruhiko Yoda, Kozo Higuchi. Initialimperfection data and evaluation of compressive strengthof orthotropic steel deck for long-span cable-stayed bridges [J]. Proceedings of the Institution of CivilEngineering, 1996, 549(I-37): 55-64. (in Japanese)
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文章访问数: 1019
HTML全文浏览量: 20
PDF下载量: 269
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U肋加劲板焊接残余应力的一种简化计算方法

作者简介: 吴冲(1962-),男,福建宁化人,教授,博士,博导,从事桥梁工程研究(E-mail:cwu@mail.tongji.edu.cn).

通讯作者: 赵秋(1976-),男,吉林通榆人,讲师,博士,从事桥梁工程研究(E-mail:zhaoqiu@fzu.edu.cn).

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A SIMPLIFIED CALCULATION METHOD OF WELDING RESIDUAL STRESS OF U-RIB STIFFENED PLATES

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目录

作者简介:
吴冲(1962-),男,福建宁化人,教授,博士,博导,从事桥梁工程研究(E-mail:cwu@mail.tongji.edu.cn).

通讯作者:
赵秋(1976-),男,吉林通榆人,讲师,博士,从事桥梁工程研究(E-mail:zhaoqiu@fzu.edu.cn).