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饱和土中排桩对入射S波隔离的三维分析

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Keywords: 饱和土,排桩,散射,竖向位移,隔离效果

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Abstract:

基于Biot两相饱和多孔介质理论,就饱和土体中排桩对入射S波的隔离效应进行了三维分析。使用坐标转换和Graf加法定理,将某一桩体附近的总波场构造为入射波和所有桩体的散射波之和,通过施加桩土界面处的边界条件,利用不同阶三角函数的线性无关性,得到了问题的解析解。数值算例对排桩后面的饱和土体的竖向位移振幅衰减进行了分析,探讨了入射波频率和桩土弹性模量比等参数对饱和土中排桩隔离效果的影响。与弹性土中的相应结果比较表明:频率较低时,饱和土中排桩的隔离效果和弹性土中较为接近;频率较高时,两者之间的差别有所增大。

References

[1]  Woods R D,Barnet N E,Sangesser R Holography.A new tool for soil dynamics[J].Journal of Geotechnical Engineering Division,ASCE,1974,100:1231-1247.
[2]  Liao S,Sangrey D A.Use of piles as isolation barriers[J].Journal of Geotechnical Engineering Division,ASCE,1978,104(9):1139-1152.
[3]  Avils J,S nchez-Sesma F J.Piles as barriers for elastic waves[J].Journal of Geotechnical Engineering Division,ASCE,1983,109(9):1133-1146.
[4]  Avils J,S nchez-Sesma F J.Foundation isolation from vibration using piles as barriers[J].Journal of Engineering Mechanics,ASCE,1988,114(11):1854-1870.
[5]  Gao G Y,Li Z Y,Qiu CH,et al.Three-dimensional analysis of rows of piles as passive barriers for ground vibration isolation[J].Soil Dynamics and Earthquake Engineering,2006,26(11):1015-1027.
[6]  Tsai PH,Feng Z Y,Jen T L.Three-dmien sional an alysis of the screening effectiveness of hollow pile barriers for foundation-induced vertical vibration[J].Computers and Geotechnics,(In Press,A vailable online 31 July 2007).
[7]  Biot M A.Theory of propagation of elastic waves in a fluid-saturated porous solid,Ⅰ,Low frequency range[J].Journal of the Acoustical Society of America,1956,28(2):168-178.
[8]  吴世明.土介质中的波[M].北京:科学出版社,1997.
[9]  HuangW,Wang Y J,Rokhin S.I Obliquely scattering of an elastic wave from amultilayered cylinder in a solid.Tran sfer matrix approach[J].Journal of the Acoustical S ociety of America,1996,99(5):2742-2754.
[10]  Kattis S E,Polyzos D,Beskos D E.Vibration isolation by a row of piles using a 3-D frequency domain BEM[J].International Journal for Numerical Methods in Engineering,1999,46(5):713-728.

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