Scattering of SH waves by a scalene triangular hill
Scattering of SH waves by a scalene triangular hill
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DOI：
10.1007/s11803-009-8091-y
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发表时间：
2010-03
影响因子：
2.8
通讯作者：
Shuzhi Lin;Fa-qiang Qiu;Dian-kui Liu
中科院分区：
文献类型：
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作者：
Shuzhi Lin;Fa-qiang Qiu;Dian-kui Liu
局部地形对地震动的影响是一个重要的问题。本文利用复变函数、移动坐标和辅助函数研究了SH波入射时不规则三角形凸起的反平面响应。首先，模型被分为两个区域：一个不等边三角形的山丘与一个半圆形的底部;和一个半空间与一个半圆形的峡谷。波函数满足零应力条件的三角形楔和在水平面构造在这两个领域。然后，考虑位移连续性和应力平衡，建立了代数方程。最后通过数值算例说明了地形和入射波特性对地震动的影响。
The influence of local landforms on ground motion is an important problem. The antiplane response of a scalene triangular hill to incident SH waves is studied in this paper by using a complex function, moving coordinates and auxiliary functions. First, the model is divided into two domains: a scalene triangular hill with a semi-circular bottom; and a half space with a semi-circular canyon. Wave functions that satisfy the zero-stress condition at the triangular wedges and at the horizontal surface are constructed in both domains. Then, considering the displacement continuity and stress equilibrium, algebraic equations are established. Finally, numerical examples are provided to illustrate the influence of the geometry of the hill and the characteristics of the incident waves on the ground motions.