| Scattering of elastic wave by a cylindrical shell deeply embeded in saturated soils |
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| 作者姓名： | 徐平 夏唐代 韩同春 |
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| 作者单位： | Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China |
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| 摘 要： | The compression of soil grain and pore fluid as well as viscid coupling of pore fluid and soil skeleton is considered, the scattering problem of incident plane P1 wave （fast compressional wave） by an infinite cylindrical shell deeply embedded in isotropic saturated soils is studied by adopting the amended Biot model, amplitude equations about potential functions of scattering and refracting fields are obtained, and the effect of dimensionless frequencies and shell thickness on the back-scattering spectra and dynamic stress concentration factors of two types of cylindrical shells with high and low rigidity are numerically computed and analyzed.
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| 关 键 词： | 弹性波 光谱 动力学 地质条件 地震 地下建筑 |
| 文章编号： | 1000-9116（2006）02-0191-08 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005-11-25 |
Scattering of elastic wave by a cylindrical shell deeply embedded in saturated soils |
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| XU Ping,XIA Tang-dai,HAN Tong-chun.Scattering of elastic wave by a cylindrical shell deeply embeded in saturated soils[J].Acta Seismologica Sinica(English Edition),2006,19(2):191-198. |
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| Authors: | XU Ping XIA Tang-dai HAN Tong-chun |
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| Institution: | Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The compression of soil grain and pore fluid as well as viscid coupling of pore fluid and soil skeleton is considered, the scattering problem of incident plane P1 wave (fast compressional wave) by an infinite cylindrical shell deeply embedded in isotropic saturated soils is studied by adopting the amended Biot model, amplitude equations about potential functions of scattering and refracting fields are obtained, and the effect of dimensionless frequencies and shell thickness on the back-scattering spectra and dynamic stress concentration factors of two types of cylindrical shells with high and low rigidity are numerically computed and analyzed. |
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| Keywords: | saturated soils cylindrical shell elastic wave scattering back-scattering spectra dynamic stress concentration factors |
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