| Popis: |
Based on the Biot’s Theory, the dynamic response of non-homogeneous saturated soil has been studied using Helmholtz vector decomposition principle and Exact Dynamic Stiffness Method (EDSM). Reflection and transmission of SH wave in non-homogeneous saturated soil have also been analyzed in considering the continuous variation of physical and mechanical properties of saturated foundation along the thickness. The general calculation formula about the reflection and transmission coefficients of bedrock and free field on both surfaces was achieved. Assuming that the material properties have an exponential law distribution and gradient variation along the thickness-coordinate, the dynamic response of non-homogeneous saturated soils under incident plane SH wave was discussed by numerical examples. The results show that the incident angle, the thickness and heterogeneity index of saturated soil have significant influences on the ratio of the ground displacement and bedrock displacement. |
