Influences of Biot's compressible parameters on dynamic response of vertically loaded multilayered poroelastic soils

The problem is formulated on the basis of Biot's theory and the analytical layer element method, and the global stiffness matrix for the multilayered soil is established by combining continuity conditions of adjacent layers and boundary conditions based on the analytical layer element for a single poroelastic saturated layer in the Hankel transformed domain. Solutions in frequency domain are obtained by taking the Hankel inverse transform. Selected numerical examples are performed to validate the correctness of the present method and to discuss the influences of compressibility parameters of soil grain and pore fluid as well as the influence of soil stratification on vertical displacement and pore pressure.