| 大跨径悬索桥动载试验研究 |
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| 引用本文： | 叶建峰,颜桂云,庄金平,江星.大跨径悬索桥动载试验研究[J].福建工程学院学报,2009,7(1). |
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| 作者姓名： | 叶建峰 颜桂云 庄金平 江星 |
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| 作者单位： | 1. 福建工程学院,土木工程系,福建,福州,350007
2. 福建省建协桥梁检测评估有限责任公司,福建,福州,350011 |
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| 基金项目： | 福建省青年科技人才创新项目，福建省教育厅B类项目 |
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| 摘 要： | 为检验在役大跨径悬索桥结构的动力性能,对主跨128 m地锚式悬索桥进行动力试验.测试其自振频率、振型和阻尼比;激振试验中,测试桥跨结构在汽车以不同速度通过桥跨和在桥上特定位置跳车时桥跨结构的动应变、动位移、振幅以及加速度等动力响应,计算得出冲击系数.并将实测结果与有限元结果进行对比分析.结果表明,该悬索桥具有较好的竖向刚度、横向刚度;汽车在桥上运行时对桥跨结构有一定的冲击作用但并不明显,有障碍行车舒适度较差.
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| 关 键 词： | 大跨径悬索桥 动载试验 自振特性 动力响应 有限元分析 |
Research on dynamic load test of long-span suspension bridge |
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| Ye Jianfeng,Yan Guiyun,Zhuang Jinping,Jiang Xing.Research on dynamic load test of long-span suspension bridge[J].Journal of Fujian University of Technology,2009,7(1). |
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| Authors: | Ye Jianfeng Yan Guiyun Zhuang Jinping Jiang Xing |
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| Institution: | 1.Civil Engineering Department;Fujian University of Technology;Fuzhou 350007;China;2.Bridge Test and Evaluation Co.;Ltd.;Fujian Association of Construction;Fuzhou 350011;China |
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| Abstract: | To examine the dynamic responses of existing long-span suspension bridge structures,dynamic tests were made on an earth-anchored suspension bridge with a span of 128m.The frequencies and modes of natural vibration and damping ratio were tested.The vibration excitation was conducted to test the dynamic response of strains,displacements,swings and accelerations of the structure under dynamic loads of the truck passing through bridge with different uniform velocities and bumping at a specific point on the brid... |
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| Keywords: | long-span suspension bridge dynamic loading test natural vibration property dynamic response finite element analysis |
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