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| 3D scattering of obliquely incident plane SV waves by an alluvial valley embedded in a fluid-saturated, poroelastic layered half-space |
| Zhenning Ba1, 2, Jianwen Liang1, 2, Xiongyi Mei1 |
1 School of Civil Engineering, Tianjin University, Tianjin 300072, China
2 Tianjin Key Laboratory of Civil Engineering Structure and New Materials, Tianjin 300072, China |
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Abstract The indirect boundary element method is used to study the 3D dynamic response of an infinitely long alluvial valley embedded in a saturated layered half-space for obliquely incident SV waves. A wave-number transform is first applied along the valley’s axis to reduce a 3D problem to a 2D plane strain problem. The problem is then solved in the section perpendicular to the axis of the valley. Finally, the 3D dynamic responses of the valley are obtained by an inverse wave-number transform. The validity of the method is confirmed by comparison with relevant results. The differences between the responses around the valley embedded in dry and in saturated poroelastic medium are studied, and the effects of drainage conditions, porosity, soil layer stiffness, and soil layer thickness on the dynamic response are discussed in detail resulting in some conclusions.
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Received: 05 June 2013
Published: 20 November 2013
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Corresponding Authors:
Zhenning Ba
E-mail: bazhenning_001@163.com
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