| 双曲拱桥拓宽改造后内力重分布的探讨 |
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| 引用本文： | 姚鑫,李国芬.双曲拱桥拓宽改造后内力重分布的探讨[J].森林工程,2006,22(6):44-46. |
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| 作者姓名： | 姚鑫 李国芬 |
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| 作者单位： | 南京林业大学,南京,210037 |
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| 摘 要： | 为了加强现有双曲拱桥的结构承栽力和交通通行能力，提出了利用刚架片双向拓宽改造的方法，对现有双曲拱桥的上部结构进行加固改造，并利用有限元分析软件基于应力重分布理论对改造前后的主拱圈（拱肋）应力变化进行分析计算，论证该方法的可行性和合理性：
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| 关 键 词： | 双曲拱桥 改造 有限元 |
| 文章编号： | 1001-005X（2006）06-0044-03 |
| 收稿时间： | 2006-03-31 |
| 修稿时间： | 2006年3月31日 |
Research on the Structural Force Redistriution for Double- Curved Arch Bridges Reforming |
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| Yao Xin,Li Guofen.Research on the Structural Force Redistriution for Double- Curved Arch Bridges Reforming[J].Forest Engineering,2006,22(6):44-46. |
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| Authors: | Yao Xin Li Guofen |
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| Institution: | Nanjing Forestry University, Nanjing 210037 |
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| Abstract: | In order to improve the structure carrying capacity and the traffic ability,the paper put forward a method of using steel flakes to widen both sides of the bridge to reinforce the upper part of the double-curved arch bridge.Then the stress changes of the main arch ring(arch rib) before and after reforming were analyzed and calculated using finite element analysis software based on stress redistribution theory.The feasibility and rationality of the method were demonstrated. |
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| Keywords: | double- curved arch bridge reforming finite element |
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