| 基于自互功率谱法的高桩码头物理模型模态参数识别研究 |
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| 引用本文： | 赵冲久,韩阳.基于自互功率谱法的高桩码头物理模型模态参数识别研究[J].水道港口,2011,32(5):356-360. |
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| 作者姓名： | 赵冲久 韩阳 |
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| 作者单位： | 重庆交通大学河海学院,重庆400074;交通运输部天津水运工程科学研究所水工构造物检测、诊断与加固技术交通行业重点实验室,天津300456 |
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| 摘 要： | 阐述了自互功率谱法识别结构模态参数的理论依据,以某港高桩码头为原型,有机玻璃为原材料建立物理模型进行模态试验.介绍了高桩码头物理模型模态试验方法.采用自功率谱、互功率谱和相干函数分析,识别了高桩码头物理模型前4阶同有频率和阻尼比.同时运用有限元软件ANSYS分析得到相应的固有频率,试验数据与ANSYS分析结果的对比表明...
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| 关 键 词： | 功率谱 高桩码头 模态分析 有限元计算 |
Structural modal parameter identification of high-piled wharf physical model based on auto-cross spectrum density method |
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| ZHAO Chong-jiu,HAN Yang.Structural modal parameter identification of high-piled wharf physical model based on auto-cross spectrum density method[J].Journal of Waterway and Harbour,2011,32(5):356-360. |
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| Authors: | ZHAO Chong-jiu HAN Yang |
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| Institution: | 1.School of River ＆ Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China;2.Tianjin Research Institute for Water Transport Engineering,Key Laboratory of Harbor ＆ Marine Structure Safety,Ministry of Transport,Tianjin 300456,China) |
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| Abstract: | The theoretical basis of modal parameter identification based on auto-cross spectrum density method was introduced,and the method of modal test for high-piled wharf physical model was explained in this paper.The large high-piled wharf physical model was established with PMMA as raw material for modal test.Four order natural frequency and damping ratio of high-piled wharf physical were identified by auto-power spectrum,cross-power spectrum and coherence function.Meanwhile,natural frequency was obtained by finite element software ANSYS.Compared with the results of experiment,the ANSYS results near to them. |
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| Keywords: | spectrum density high-piled wharf modal analysis finite element calculation |
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