饱和土体中圆柱体对弹性波的散射  

Elastic Wave Scattering by a Cylinder in Saturated Soils

作　　者：徐平[1] 夏唐代[2] 周新民[2] 

机构地区：[1]郑州大学交通运输工程系,郑州450002 [2]浙江大学岩土工程研究所,杭州310027

出　　处：《科技通报》2006年第6期802-806,812,共6页Bulletin of Science and Technology

摘　　要：考虑土颗粒与孔隙流体的压缩以及孔隙流体与土骨架之间的粘性耦合作用,采用修正的Biot模型,研究了入射平面P1波在饱和土中饱和圆柱体上的散射问题,得到了散射和折射波场势函数的幅值方程,并对背向散射形函数随无量纲频率的变化曲线以及不同无量纲频率的径向位移沿周向的分布曲线进行了数值模拟。Considering the compression of soil grain and pore fluid and viscid coupling of pore fluid and soil skeleton, elastic wave scattering by a saturated cylinder in saturated soils was studied by adopting amended Biot model, amplitude equations of potential functions of scattered wave fields and refracted wave fields were obtained, and the variation curves of back-scattered form functions with normalized frequencies and circumferential distribution curves of radical displacements of various normalized frequencies were numerically analyzed.

关 键 词：饱和土体 散射 背向散射形函数 径向位移 无量纲频率 

分 类 号：TU435[建筑科学—岩土工程]