Semi-Analytical Solution for the Vertical Vibration of a Single Pile Embedded in a Frozen Poroelastic Half-Space

The theory of vertical pile vibration is the essential basis for integrity determination and dynamic analysis. characteristics are inevitably affected when surrounding soil frozen due to low environmental temperature. Therefore, investigation considering as a saturated porous medium great importance. In this paper, an analytical model was established by employing composite media, that is, simplifying upper layer homogeneous isotropic foundation beneath elastic half-space subjected motion rigid disk. By integral transform variable separation method, solutions proposed were derived under three-dimensional axisymmetric condition. its verified comparing them with existing end-bearing embedded in homogeneously well half-space. A parametric study conducted utilizing solutions, results indicated bottom stiffness, freezing temperature, shear modulus unfrozen soil, etc., had significant influence on responses both frequency time domains.