Model Test on the Excess Pore Water Pressure of Pipe-pile with Hole during the Static-sinking Pile

Abstract

Based on the analysis of the static sinking-pile, the pipe-pile with holes technique is put forward, which can alleviate the disadvantage effect of static sinking-pile effect. The model tests have been carried out for it, and the time-space change rule of the environmental effects of the analysis of excess pore water pressure dissipation have also been studied during the static sinking-pile of the pipe-pile with hole. The excess pore water pressure will be dissipated with the time extending during the static sinking-pile of the 3 kind of holes model of pipe-pole with hole. On the condition of the same depth, the effective radius is more bigger, i.e., the distance between the observation dot and the center of the pile is more farther, the excess pore water pressure will be more smaller; On the condition of the same effective radius, the depth of the observation dot is more bigger, the excess pore water pressure will be more bigger; On the contrast to the pipe-pole without hole, to some extent, the pipe-pile with hole can reduce the maximum of excess pore water pressure, and expedite the excess pore water pressure dissipation. This result can be provided the credible test base for the technique effect of the pipe-pole with holes expediting the excess pore water pressure dissipation and reducing the maximum of it.