地震学报Issue(4)：617-628,12.DOI:10.11939/jass.2015.04.008
各向异性半空间中浅埋孔洞对地表反平面运动的影响
Effect of shallow buried cavity on anti-plane motion of ground surface in anisotropic half-space
摘要
Abstract
The scattering of steady-state horizontal shear wave (SH-wave)by arbitrary cavity in anisotropic half-space is investigated together with its effect on ground motion by using the complex variable function method.The scattered wave function stratifying the condition of the stress free on the horizontal sur-face of anisotropic-half space automatically is constructed in the transformed space.Based on the zero-stress boundary condition of the cavity surface,the coefficient of scattered wave function is solved by means of the least squaresmethod.By simulating the geological condition of the media anisotropy,theground surface displacement amplitudes of anisotropic half-space with circularcavity,elliptical cavity and quadrate cavity are illustrated numerically.Theeffect of ground motion on the media property,the cavity shape,buried depth,the wave number and incident angle of incident wave are analyzed.Numericalresult shows the media anisotropy has great effects on the ground surface displacementof half-space with a cavity.The ground surface displacement amplitudecaused by incident wave with a certain angle may be much greater than thatof the isotropic media in a certain frequency range,and decreases with theincrease of the cavity depth.关键词
各向异性半空间/SH 波散射/孔洞/地面运动/复变函数Key words
anisotropic half-space/scattering of SH wave/cavity/ground motion/complex variable function分类
天文与地球科学引用本文复制引用
陈志刚..各向异性半空间中浅埋孔洞对地表反平面运动的影响[J].地震学报,2015,(4):617-628,12.基金项目
教育部重点实验室项目“重大工程灾害与控制”和广东省高等学校科研型重点实验室项目“工程结构故障诊断”共同资助． （）
