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| 波纹钢腹板剪切屈曲分析中初始缺陷的模拟和影响程度分析 | |
| 引用本文： | 宋建永,张树仁,吕建鸣.波纹钢腹板剪切屈曲分析中初始缺陷的模拟和影响程度分析[J].公路交通科技,2004,21(5):61-64. |
| 作者姓名： | 宋建永 张树仁 吕建鸣 |
| 作者单位： | 1. 交通部公路科学研究所,北京,100088;哈尔滨工业大学,黑龙江,哈尔滨,150090 2. 哈尔滨工业大学,黑龙江,哈尔滨,150090 3. 交通部公路科学研究所,北京,100088 |
| 摘 要： | 通过非线性有限元方法分析波纹钢腹板剪切屈曲极限荷载和屈曲模态,采用一致缺陷模态法模拟波形尺寸缺陷,钢板厚度缺陷则通过钢板厚度分布函数对单元厚度的修正来引入。分析结果表明过大的波形尺寸缺陷会降低波纹钢腹板的剪切屈曲极限荷载,而波纹钢腹板对因钢板厚度缺陷而引起的过早屈曲要大大优于平钢腹板,微小的厚度缺陷对波纹钢腹板的剪切屈曲极限荷载影响很小。 |
| 关 键 词： | 剪切屈曲 初始缺陷 波纹钢腹板 屈曲模态 极限荷载 |
| 文章编号： | 1002-0268(2004)05-0061-04 |
| 修稿时间： | 2003年5月25日 |
Simulation and Impact Analysis for Initial Imperfections in Shear Buckling Analysis for Corrugated Steel Webs |
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| SONG Jian-yong.Simulation and Impact Analysis for Initial Imperfections in Shear Buckling Analysis for Corrugated Steel Webs[J].Journal of Highway and Transportation Research and Development,2004,21(5):61-64. | |
| Authors: | SONG Jian-yong |
| Affiliation: | SONG Jian-yong~ |
| Abstract: | Initial imperfections of corrugated webs involve corrugation configuration imperfections and steel plate thickness imperfections.The corrugation configuration imperfections are simulated by uniform imperfections mode method, and steel plate thickness imperfections are simulated by thickness distribution function.Simulation and impact analysis of two different imperfections are completed.The analysis results indicated, that corrugation configuration imperfections must be restricted,because this oversize imperfections can descent shear buckling ultimate loading,but small thickness imperfections affect shear buckling ultimate loading very lightly. |
| Keywords: | Shear buckling Initial imperfections Corrugated steel webs Buckling mode Ultimate loading |
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