Scattering of SH-wave to subsurface circular cavity and inclusion in a layered half-space and the induced ground motion

作者：Qi, Hui; Chen, Dong Ni; Cai, Li Ming

来源：Journal of Vibration and Shock, 2014, 33(22): 152-156.

DOI：10.13465/j.cnki.jvs.2014.22.027

• Circular cavity
• Ground motions
• Large arc assumed method
• Scattering of SH-waves
• Surface layers

The solution of scattering of SH-wave was given by the method using an circular boundary with large radius to approximate the straight boundary of surface layer. In the light of the theory of Helmholtz, the general solution of the Biot's wave function was achieved. Utilizing the complex function method and the boundary conditions, the present problem was transformed into a problem in which only infinite linear algebraic equations with unknown coefficients need to be solved. Numerical results of the ground motion were provided. The effects of incident wave number, incident angle, buried depth, stiffness of inclusion and layer on ground motion were analyzed qualitatively. The results of numerical examples show that great a influence on ground motion may occur due to strong interaction between the surface layer and the circular cavity and inclusion.

• 出版日期2014
• 单位哈尔滨工程大学