| 中(下)承式拱桥吊杆静张力分析方法的改进 |
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| 引用本文： | 杜思义,殷学纲,陈淮.中(下)承式拱桥吊杆静张力分析方法的改进[J].世界地震工程,2006,22(4):99-103. |
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| 作者姓名： | 杜思义 殷学纲 陈淮 |
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| 作者单位： | 1. 郑州大学,土木工程学院,河南,郑州,450002
2. 重庆大学,工程力学系,重庆,400044 |
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| 摘 要： | 在中(下)承式拱桥的有限元模型中,引入了由于施工中吊杆长度调整而产生的几何刚度矩阵,用一阶矩阵摄动理论,导出了相应的吊杆系静张力分析的相关公式。对一实际中承式拱桥的数值计算分析表明,使用本方法可有效地提高中(下)承式拱桥的吊杆静张力分析的准确性。
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| 关 键 词： | 中(下)承式拱桥 吊杆(索) 几何刚度矩阵 静张力 |
| 文章编号： | 1007-6069（2006）04-0099-05 |
| 收稿时间： | 2006-05-16 |
| 修稿时间： | 2006-05-162006-10-17 |
Static stress analysis on suspenders of half-through or through arch bridges based on improved FEM |
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| DU Si-yi,YIN Xue-gang,CHEN Huai.Static stress analysis on suspenders of half-through or through arch bridges based on improved FEM[J].World Information On Earthquake Engineering,2006,22(4):99-103. |
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| Authors: | DU Si-yi YIN Xue-gang CHEN Huai |
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| Institution: | 1. School of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China; 2. Department of Engineering Mechanics, Chongqing University, Chongqing 400044, China |
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| Abstract: | The correlative formulas analyzing static stress of suspenders of half-through or through arch bridges are presented in this paper.Based on the perturbation theory,geometry stiffness matrix produced by adjusting length of suspenders in construction is considered by improved FEM.The results are obtained by calculating the static stress on suspenders of a true half-through arch bridge.The results show that accuracy of static stress of suspenders of the half-through or through arch bridges can be improved in effect. |
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| Keywords: | half-through or through arch bridge Suspender geometry stiffness matrix static stress |
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