| 拼装式钢桁桥振动特性研究 |
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| 引用本文： | 江克斌,任新见,张军. 拼装式钢桁桥振动特性研究[J]. 解放军理工大学学报(自然科学版), 2002, 3(5): 44-48 |
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| 作者姓名： | 江克斌 任新见 张军 |
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| 作者单位： | 解放军理工大学,工程兵工程学院,江苏,南京,210007;解放军理工大学,工程兵工程学院,江苏,南京,210007;解放军理工大学,工程兵工程学院,江苏,南京,210007 |
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| 摘 要： | 研究桥的振动特性是解决实际桥梁振动问题的前提条件。根据拼装式钢桁桥的结构特点,基于通用有限元程序构建结构实体模型进行振动分析,并对自振频率和振动模态的变化规律及影响因素进行了探讨。样桥计算结果与试验结果吻合。分析表明,拼装式钢桁桥振动频率具有集聚现象;自振频率及各阶模态位移幅值随着桥跨度的增大而减小。
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| 关 键 词： | 钢桁桥 振动分析 有限元法 |
| 文章编号： | 1009-3443(2002)05-0044-05 |
| 修稿时间： | 2002-03-25 |
Vibration Research of Prefabricated Truss Steel Bridge |
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| JIANG Ke bin,REN Xin jian and ZHANG Jun. Vibration Research of Prefabricated Truss Steel Bridge[J]. Journal of PLA University of Science and Technology(Natural Science Edition), 2002, 3(5): 44-48 |
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| Authors: | JIANG Ke bin REN Xin jian ZHANG Jun |
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| Affiliation: | Engineering Institute of Engineering Corps, PLA Univ. of Sci. & Tech., Nanjing 210007, China;Engineering Institute of Engineering Corps, PLA Univ. of Sci. & Tech., Nanjing 210007, China;Engineering Institute of Engineering Corps, PLA Univ. of Sci. & Tech., Nanjing 210007, China |
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| Abstract: | Vibration research is the precondition to solving actual vibration problems of bridges. According to the characters of the prefabricated truss steel bridge, an entity model is constructed based on a general FEA programme for vibration analysis. Furthermore the laws on free vibration frequencies and modes are studied. Calculation results correspond to test results. Analysis indicates that the frequency has a convergency phenomenon. The values of frequencies and amplitudes will decrease with the augmentation of bridge span. |
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| Keywords: | truss steel bridge vibration analysis finite element method |
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