| 大跨度钢管混凝土拱桥动力特性分析 |
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| 引用本文： | 张福才. 大跨度钢管混凝土拱桥动力特性分析[J]. 科技信息, 2008, 0(22): 93-94 |
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| 作者姓名： | 张福才 |
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| 作者单位： | 中铁十二局集团有限公司第四工程公司 陕西西安710021 |
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| 摘 要： | 桥梁结构的动力特性（固有频率和振型）是结构动力分析和抗震分析的重要参数。以东莞水道特大桥（主桥）为研究对象,通过建立空间结构模型,计算分析了钢管混凝土拱桥的动力特性,为该类桥梁的抗震设计研究提供了分析的基础。计算结果表明：该种桥型横向刚度较竖向刚度弱,桥梁低阶以拱肋横向振动为主。
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| 关 键 词： | 钢管混凝土拱桥 有限元方法 频率 振型 |
Dynamic Characteristics Analysis of long span CFST arch bridge |
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| ZHANG fu-cai. Dynamic Characteristics Analysis of long span CFST arch bridge[J]. Science, 2008, 0(22): 93-94 |
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| Authors: | ZHANG fu-cai |
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| Affiliation: | ZHANG fu-cai |
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| Abstract: | The dynamic behavior(natural frequencies,vibration shapes of a bridge)is the important parameter for the dynamic and seismic analysis of structure.Dongguan channel bridge has been taken as a research project.The space model of structure was built up and the dynamic property of concrete filled steel tube arch bridge Was calculated and analyzed.A useful exploration on this type of bridge is made for the seismic design.The obtained results indicate that the transverse stiffness of the bridge is smaller than its vertical stifness,and the transverse vibrations of arches are dominated in the main part of its lower order modes. |
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| Keywords: | concrete filled steel tubular arch bridge finite element method frequency mode |
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