Based on a logistics processing warehouse of phase II and plant project reinforced by PHC pipe pile

the compaction effect of PHC pipe pile in dredger fill ground is analyzed. The changes of pore pressure around pipe and the displacement distribution characteristics of soil during pile-sinking are studied by piezometers and clinometers embedded in advance and with the aid of field test means. It is found that the excess pore water pressure decreases linearly with the increase of the distance to the pile and the area of effect is about 10 times of pile diameter. The maximum soil horizontal displacement occurs at a depth of 0.2-0.4 times of pile length

which is related to the subsoil properties and the depth of the soil. By simulating the field test results effectively with numerical simulation and then promoting the results

the law of the displacement of soil with depth and the radial distance during pile-sinking is got. The numerical simulation results show that the soil displacement field is greatly influenced by the friction feature of pipe-soil interface and the pile diameter.