The analytical layer-elements for a single poroelastic soil layer and the underlying half-space are established using an algebraic manipulation and Hankel trans- form. According to the boundary conditions and adjacent...The analytical layer-elements for a single poroelastic soil layer and the underlying half-space are established using an algebraic manipulation and Hankel trans- form. According to the boundary conditions and adjacent continuity conditions of general stresses and displacements, a global matrix equation in the transform domain for multi- layered saturated soil media is assembled and solved. Solutions in the frequency domain can be further obtained with an inverse Hankel transform. Numerical examples are used to examine accuracy of the present method and demonstrate effects of soil parameters and load conditions on dynamic responses of the multilayered poroelastic saturated soils.展开更多
In this paper,the steady-state response of a saturated half-space with an overlying dry layer subjected to a moving rectangular load is investigated.The governing partial differential equations are solved using the Fo...In this paper,the steady-state response of a saturated half-space with an overlying dry layer subjected to a moving rectangular load is investigated.The governing partial differential equations are solved using the Fourier transform.The solutions in time-space domain are expressed in terms of infinite Fourier type integrals,which can be evaluated only by numerical quadrature.Numerical results show that the influence of a drained or undrained interface on the response is related to the permeability of the underlying saturated soil.Moreover,the effect due to the upper dry layer is associated with the thickness of the layer.展开更多
文摘The analytical layer-elements for a single poroelastic soil layer and the underlying half-space are established using an algebraic manipulation and Hankel trans- form. According to the boundary conditions and adjacent continuity conditions of general stresses and displacements, a global matrix equation in the transform domain for multi- layered saturated soil media is assembled and solved. Solutions in the frequency domain can be further obtained with an inverse Hankel transform. Numerical examples are used to examine accuracy of the present method and demonstrate effects of soil parameters and load conditions on dynamic responses of the multilayered poroelastic saturated soils.
文摘In this paper,the steady-state response of a saturated half-space with an overlying dry layer subjected to a moving rectangular load is investigated.The governing partial differential equations are solved using the Fourier transform.The solutions in time-space domain are expressed in terms of infinite Fourier type integrals,which can be evaluated only by numerical quadrature.Numerical results show that the influence of a drained or undrained interface on the response is related to the permeability of the underlying saturated soil.Moreover,the effect due to the upper dry layer is associated with the thickness of the layer.
