3D Scattering of Oblique Incident Plane SV Waves by a Depositional Valley in Layered Half-space

梁建文; 任强强; 巴振宁

doi:10.13409/j.cnki.jdpme.2013.01.019

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3D Scattering of Oblique Incident Plane SV Waves by a Depositional Valley in Layered Half-space

更新时间：2025-12-11

- 3D Scattering of Oblique Incident Plane SV Waves by a Depositional Valley in Layered Half-space
- Vol. 33, Issue 1, Pages: 1-10(2013)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2013.01.019
  CLC： 315.31
- Published：2013
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[1]梁建文,任强强,巴振宁.层状半空间中沉积谷地对斜入射平面SV波的三维散射[J].防灾减灾工程学报,2013,33(01):1-10.

梁建文, 任强强, 巴振宁. 3D Scattering of Oblique Incident Plane SV Waves by a Depositional Valley in Layered Half-space[J]. 2013, 33(1): 1-10.
[1]梁建文,任强强,巴振宁.层状半空间中沉积谷地对斜入射平面SV波的三维散射[J].防灾减灾工程学报,2013,33(01):1-10. DOI： 10.13409/j.cnki.jdpme.2013.01.019.

梁建文, 任强强, 巴振宁. 3D Scattering of Oblique Incident Plane SV Waves by a Depositional Valley in Layered Half-space[J]. 2013, 33(1): 1-10. DOI： 10.13409/j.cnki.jdpme.2013.01.019.

摘要

采用间接边界元法

给出了层状半空间中沉积谷地对斜入射平面SV波的三维散射解答

并通过与已有结果的比较

验证了本文解答的正确性。进行数值计算

研究了斜入射角度对散射效应的影响

并以基岩上单一土层为例

讨论了基岩刚度和覆盖土层厚度对沉积谷地附近地表位移的影响。研究表明

三维散射与二维散射之间存在本质差别

不能简单地将斜入射平面SV波分解到沉积谷地横截面的面内方向

然后按平面问题进行计算;基岩与土层刚度比对沉积附近地表位移幅值有着较大的影响

但对位移幅值的空间分布影响不大;土层厚度变化不仅影响地表位移幅值的大小

还会改变地表位移幅值的空间分布。

Abstract

The solutions of 3D scattering of oblique incident plane SV waves by a depositional valley in layered half-space are given in this paper on the basis of the solutions of a canyon.The accuracy of the method is verified by comparing with related results.It is found there is essential difference between the case of 3D wave scattering and that of 2D.So we can′t simply make the oblique incident plane SV wave decompose into inplane and antiplane directions in the cross-section of the valley

then calculate and superpose respectively.At the same time

many numerical calculations have been done for the researches of the scattering effect of the incidence angles.Taking an alluvial valley to be a one layer over half-space as an example

the effects of the stiffness and the thickness of the layer on the displacement are discussed.

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references

平面SV波在层状半空间中沉积谷地周围的散射 [J]. 巴振宁,梁建文. 地震工程与工程振动 . 2011(03)

2.5D scattering of incident plane SH waves by a canyon in layered half-space [J]. Zhenning Ba and Jianwen Liang Department of Civil Engineering, Tianjin University, Tianjin 300072, China. Earthquake Science . 2010(01)

圆弧形沉积谷地对平面SV波三维散射解析解 [J]. 梁建文,魏新磊,Vincent W.Lee. 岩土工程学报 . 2009(09)

浅圆沉积谷地对瑞雷波的散射——高频解 [J]. 梁建文,张秋红,李方杰. 地震学报 . 2006(02)

圆弧形沉积河谷场地在平面SV波入射下的动力响应 [J]. 梁建文,严林隽,秦东,Vincent W.Lee. 土木工程学报 . 2003(12)

Amplification of obliquely incident waves by a cylindrical valley embedded in a layered half-space [J] . Francisco C.P. de Barros,J. Enrique Luco. Soil Dynamics and Earthquake Engineering . 1995 (3)

Azimuth dependent wave amplification in alluvial valleys [J] . H.A. Pedersen,M. Campillo,F.J. Sánchez-Sesma. Soil Dynamics and Earthquake Engineering . 1995 (4)

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