Abstract: The dissipation process of excess pore water pressure could be spread out by using permeable pipe pile. Furthermore, the negative effects in pile driving could also be eliminated. Based on FEM and the permeable pipe pile calculation model built by ABAQUS finite software, the simulation of permeable pipe pile penetration and soil consolidation could be realized. Throughout the experiment, the numerical results are validated by contrasting CEM. Meanwhile, the variations of displacement field and excess pore pressure field created in permeable pipe pile penetration process were clearly described. Compared soil consolidation around static pressure pile and permeable pipe pile, it is shown that permeable pipe pile could accelerate excess pore water to dissipate and achieve a significant promotion of pile bearing capacity in a short time.

Key words: finite elements, permeable pipe pile, excess pore pressure, permeable area