Surface motion of alluvial valley in layered half-space for incident plane P-waves

被引：0
作者：
Ba Z. [1 ,2 ]
Liang J. [1 ,2 ]
机构：
[1] School of Civil Engineering, Tianjin University
[2] Key Laboratory of Coast Civil Structure Safety of Ministry of Education
来源：
Transactions of Tianjin University | 2011年 / 17卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Alluvial valley; Indirect boundary element method; Layered half-space; One layer over bedrock; Plane P-waves; Scattering;
D O I：
10.1007/s12209-011-1627-z
中图分类号：
学科分类号：
摘要：
The indirect boundary element method (IBEM) is used to study the surface motion of an alluvial valley in layered half-space for incident plane P-waves based on Wolf's theory. Firstly, the free field response can be solved by the direct stiffness method, and the scattering wave response is calculated by Green's functions of distributed loads acting on inclined lines in a layered half-space. The method is verified by comparing its results with literature and numerical analyses are performed by taking the amplification of incident plane P-waves by an alluvial valley in one soil layer resting on bedrock as an example. The results show that there exist distinct differences between the wave amplification by an alluvial valley embedded in layered half-space and that in homogeneous half-space and there is interaction between the valley and the soil layer. The amplitudes are relatively large when incident frequencies are close to the soil layer's resonant frequencies. © Tianjin University and Springer-Verlag Berlin Heidelberg 2011.
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收藏
页码：157 / 165
页数：8
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