| 斜入射平面SH波在层状半空间中沉积谷地周围的三维散射 |
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| 引用本文： | 梁建文,梅雄一,巴振宁.斜入射平面SH波在层状半空间中沉积谷地周围的三维散射[J].中国地震研究,2013,27(4):501-511. |
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| 作者姓名： | 梁建文 梅雄一 巴振宁 |
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| 作者单位： | 天津大学土木工程系，天津，300072 ; 天津土木工程结构和新材料重点实验室，天津，300072;天津大学土木工程系，天津，300072;天津大学土木工程系，天津，300072 ; 天津土木工程结构和新材料重点实验室，天津，300072 |
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| 基金项目： | This study was sponsored by Project of Natural Science Foundation of China (50908156，50978183 )，and the Application Basis and Front Technology Research Progamme of Tianjin Municipality under Grant 12JCZDJC29000． |
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| 摘 要： | The indirect boundary element method （IBEM） is used to study three-dimensional scattering of obliquely incident plane SH waves by an alluvial valley embedded in a layered half-space. The free-field response of the layered half-space is calculated by the direct stiffness method, and dynamic Green＇s functions of moving distributed loads acting on inclined lines in a layered half-space are calculated to simulate the scattering wave field. The presented method yields very accurate results since the three-dimensional dynamic stiffness matrix is exact and the moving distributed loads can act directly on the valley boundary without singularity. Numerical results and analyses are performed for amplification of obliquely incident plane SH waves around an alluvial valley in a uniform half-space and in single layer over half-space. The results show that the three-dimensional responses are distinctly different from the two-dimensional responses, and the displacement amplitudes around alluvial valleys in a uniform haft-space are obviously different from those in a layered half-space.
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| 关 键 词： | 层状半空间 平面SH波 三维散射 倾斜入射 冲积 河谷 间接边界元法 斜向 |
| 收稿时间： | 2011/12/26 0:00:00 |
Three-dimensional Scattering of Obliquely Incident Plane SH Waves by an Alluvial Valley in a Layered Half-space1 |
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| Liang Jianwen,Mei Xiongyi and Ba Zhenning.Three-dimensional Scattering of Obliquely Incident Plane SH Waves by an Alluvial Valley in a Layered Half-space1[J].Earthquake Research in China,2013,27(4):501-511. |
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| Authors: | Liang Jianwen Mei Xiongyi and Ba Zhenning |
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| Institution: | [1]School of Civil Engineering, Tianjin University, Tianjin 300072, China [2]Tianjin Key Laboratory of Civil Engineering Structures and New Materials, Tianjin 300072, China |
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| Abstract: | Three-dimensional scattering Alluvial valley Plane SH waves Layered half-space Obliquely incidence |
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| Keywords: | Three-dimensional scattering Alluvial valley Plane SH waves Layered halfspace Obliquely incidence |
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