| 双曲拱桥病害原因分析及诊断 |
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| 引用本文： | 成琛,刘文波.双曲拱桥病害原因分析及诊断[J].武汉理工大学学报(交通科学与工程版),2009,33(4):659-662. |
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| 作者姓名： | 成琛 刘文波 |
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| 作者单位： | 1. 武汉理工大学交通学院,武汉,430063;湖北省公路管理局科研所,武汉,430030
2. 湖北省高速公路实业开发有限公司,武汉,430030 |
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| 基金项目： | 国家西部交通建设科技项目资助 |
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| 摘 要： | 建立了双曲拱桥的全桥平面有限元模型,对其主要病害进行数值模拟,分析了在主拱跨中损伤、拱脚损伤、拱脚竖向位移和拱脚水平位移四种病害情况下全桥的内力及结构位移的变化,通过遗传算法对全桥损伤(包括损伤位置和损伤程度)进行识别,结果表明遗传算法对双曲拱桥的主要病害识别有较好的精度.方法和结论对双曲拱桥的维修加固都有一定的参考价值.
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| 关 键 词： | 双曲拱桥 有限元分析 遗传算法 病害分析 诊断 |
Analysis and Diagnosis of Double-convex Arch Bridge Damages |
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| Cheng Chen,Liu Wenbo.Analysis and Diagnosis of Double-convex Arch Bridge Damages[J].journal of wuhan university of technology(transportation science&engineering),2009,33(4):659-662. |
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| Authors: | Cheng Chen Liu Wenbo |
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| Institution: | School of Transportation;Wuhan University of Science and Technology;Wuhan;430060;Research Institute of Highway Bureau of Hubei Province;430030;Hubei Expressway Business Development Co.;Ltd.;430030 |
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| Abstract: | This paper builds a plane model of a whole double-convex arch bridge based on the FEM,simulates the main damages of a double-convex arch bridge in numerical method and analyzes the internal forces and structural displacements in four damage models,such as damages in the arch crown,damages in the springing,and displacements of the springing.It gives damage identification to the whole double-convex arch bridge with Genetic Algorithm(GA).Results indicate that the GA method of damage identification has a good p... |
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| Keywords: | double-convex arch bridge FEA genetic algorithm damage analysis damage diagnosis |
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