| 大跨度刚架系杆拱桥自振特性的模态分析 |
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| 引用本文： | 张政勃,周世军.大跨度刚架系杆拱桥自振特性的模态分析[J].甘肃联合大学学报(自然科学版),2009,23(5):42-44. |
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| 作者姓名： | 张政勃 周世军 |
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| 作者单位： | 兰州交通大学,土木工程学院,甘肃,兰州,730070 |
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| 摘 要： | 采用大型通用有限元程序ANSYS对一座两跨钢管混凝土刚架系杆拱桥建立了空间有限元计算模型,采用模态分析方法对桥跨结构的自振特性进行了分析,计算了桥梁前10阶的自振频率,得出了该桥成桥状态振动形态的基本特征.通过对主要设计参数的对比分析,得出了矢跨比及拱肋刚度对刚架系杆拱桥自振性能的影响规律,可为该类桥梁的设计、研究、健康监测和维护提供参考.
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| 关 键 词： | 钢管混凝土刚架系杆拱桥 自振特性 模态分析 |
Modal Analysis of Self-Vibration Characteristics of the long-span through CFST Arch Bridges |
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| ZHANG Zheng-bo.Modal Analysis of Self-Vibration Characteristics of the long-span through CFST Arch Bridges[J].Journal of Gansu Lianhe University :Natural Sciences,2009,23(5):42-44. |
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| Authors: | ZHANG Zheng-bo |
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| Institution: | ZHANG Zheng-bo(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,china) |
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| Abstract: | Abstract: The general finite element analysis software ANSYS10.0 was adopted to set up a three-dimensional finite element model of a through concrete-filled steel tubular(CFST) tied arch bridge.The self-vibration modes and vibration frequencies of the bridge's anterior 10 steps were calculated,the modal characteristics were analyesed.Main design parameters such as ratio of rise to span and stiffness of the arch ribs have different influence on the bridge structural self-vibration characteristics.The calcula... |
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| Keywords: | through concrete-filled steel tubular(CFST) tied arch bridge self-vibration characteristics modal analysis |
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