Three-Dimensional Consolidation of Visco-Elastic Soil around a Driven Pile
Driven piles commonly generate excess pore water pressures in the surrounding soil. The reconsolidation of the clay around the piles is investigated, assuming that the Mechant model can be used to describe the visco-elastic features of the soil. The initial excess pore distribution away from the pile varies according to the cylindrical cavity expansion theory. The governing equation is derived under the continuity condition. The three-dimensional analytic solution of dissipation of the excess pore water pressures induced by pile driving is solved by the methods of separation of variables and using the Laplace transform and inverse transform. Then, a case is analyzed making use of the solutions. The results show the dissipation speed of excess pore water pressures around the pile is faster than that far away from the pile and the vertical dissipation rate increases along the depth.
Z. L. Chen et al., "Three-Dimensional Consolidation of Visco-Elastic Soil around a Driven Pile", Applied Mechanics and Materials, Vols. 66-68, pp. 1291-1295, 2011