| 均匀受压两铰圆弧钢拱的平面内稳定设计曲线 |
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| 引用本文： | 林冰,郭彦林,黄李骥.均匀受压两铰圆弧钢拱的平面内稳定设计曲线[J].工程力学,2008,25(9). |
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| 作者姓名： | 林冰 郭彦林 黄李骥 |
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| 作者单位： | 清华大学土木水利学院土木工程系 |
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| 摘 要： | 采用大挠度弹塑性有限单元法对均匀受压两铰圆弧钢拱的平面内稳定性进行了研究,考虑了材料非线性、残余应力、初始几何缺陷的影响,得到了焊接工字型截面、热轧圆管截面和焊接箱型截面两铰圆弧钢拱的平面内稳定设计曲线,并与德国钢结构设计规范及美国结构稳定研究委员会的设计曲线进行了对比;建议的稳定设计曲线可用于均匀受压两铰圆弧钢拱的平面内稳定性设计,供我国拱形钢结构设计规程制定时参考。
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| 关 键 词： | 钢结构 平面内稳定 极限强度 两铰圆弧钢拱 稳定曲线 |
IN-PLANE STABILITY DESIGN CURVES OF TWO-HINGED STEEL CIRCULAR ARCHES IN UNIFORM COMPRESSION |
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| LIN Bing,GUO Yan-lin,HUANG Li-ji.IN-PLANE STABILITY DESIGN CURVES OF TWO-HINGED STEEL CIRCULAR ARCHES IN UNIFORM COMPRESSION[J].Engineering Mechanics,2008,25(9). |
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| Authors: | LIN Bing GUO Yan-lin HUANG Li-ji |
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| Abstract: | This paper investigates the in-plane inelastic stability and ultimate strength of two-hinged steel circular arch subjected to hydrostatic pressure using large deformation elastic-plastic finite element method. Material inelasticity, residual stress, and initial geometric crookedness are considered in the investigation. Stability design curves of two-hinged circular steel arch with welded I-sections, rolled circular tubes and welded box sections are obtained from numerical analysis, and they are compared with the stability curves recommended by the German Standards and the American Structure Stability Research Council. The proposed curves can be used for practical design of two-hinged circular arches in uniform compression. |
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| Keywords: | steel structure in-plane stability ultimate strength two-hinged circular steel arch stability design curves |
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