Effect of shallow buried cavity on anti-plane motion of ground surface in anisotropic half-space
Chen Zhigang
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.
Keywords：anisotropic half-spacescattering of SH wavecavityground motioncomplex variable function
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 617-628 )