| 海底载流管道轴对称波频散特性分析 |
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| 引用本文： | 刘敬喜,李天匀,朱翔,金全洲.海底载流管道轴对称波频散特性分析[J].海洋工程,2007,25(2):98-103. |
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| 作者姓名： | 刘敬喜 李天匀 朱翔 金全洲 |
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| 作者单位： | 华中科技大学,交通学院船海系,湖北,武汉,430074 |
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| 摘 要： | 海底载流管道是典型的土-固-液三相耦合问题.利用Flügge壳体运动方程,结合弹性动力学方程,建立海底载流管道轴对称运动时的频散方程,分析自由振动波的性质及其随频率变化的规律.结果表明管道周围的土壤介质对其自由振动波的传播特性影响显著,而土壤介质刚度的增大使得自由振动波的截止频率随之增加.
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| 关 键 词： | 载流管道 频散方程 漏损检测 海底 载流管道 轴对称 频散方程 特性分析 pipes seabed wave axisymmetric 截止频率 大使 刚度 特性影响 波的传播 自由振动 土壤介质 结果 规律 频率变化 性质 |
| 文章编号： | 1005-9865（2007）02-0098-06 |
| 收稿时间： | 2006-07-05 |
| 修稿时间： | 2006-07-05 |
Dispersion of axisymmetric wave in seabed fluid-filled pipes |
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| LIU Jing-xi,LI Tian-yun,ZHU Xiang,JIN Quan-zhou.Dispersion of axisymmetric wave in seabed fluid-filled pipes[J].Ocean Engineering,2007,25(2):98-103. |
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| Authors: | LIU Jing-xi LI Tian-yun ZHU Xiang JIN Quan-zhou |
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| Abstract: | Detection of water leaks in seabed fluid-filled pipes using acoustics methods is of significance in engineering. But for the sake of effective detection, the dispersion characteristics of waves in pipes must be known. The seabed fluid-filled pipes are representative of the soilstructure-fluid coupling system. The dispersion equation of seabed fluid-filled pipes under axisymmetric motion is derived from shell motion equation with Fliigge equations for a thin-walled shell and elastic dynamic equation. The free vibration waves changing with non-dimension frequency is analyzed. The result shows that the soil of surrounding cylindrical shells has great effects on the free vibration waves, and thai the cut-off frequency of the free vibration wave increases with the increase of the rigidity of the soil. |
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| Keywords: | seabed fluid-filled pipes dispersion equation soil's rigidity |
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