Usually water drainage in saturated sandy soil site occurs when a shock takes place. A similar phenomenon happens in pile driving and in vibroflotation for ground treatment. However

at present the simulation of water drainage cannot be performed in the context of conventional soil dynamics. Based on the Green functions in the frequency domain in the axisymmetric coordinates for a poroelastic medium

combining Lamb integral representation in drainage condition

equations for drainage of piles in saturated soils are performed. This paper reveals the comparative results of computational drainage and measured drainage at a project site in Jintan city

Jiangsu province

where some piles are driven. The expected value of average measured drainage is 4.82 L. The relative error between measured and computed drainages is 34%. Hence

the proposed method for drainage of pile in saturated soil is suitable in the view of conventional dynamic soil mechanics. And it may benefit further research on dynamic property of a pile driving in the saturated soil. The computation is under the pile-soil elastic system

without considering the nonlinear deformation of soil. So it needs further study to make it more realistic.