ABSTRACT
The landslides prevention piles are one of effective countermeasures against landslides. The design of landslides prevention piles is usually conducted by 2-dimentional analysis. The load that acts on each pile is different and load may exceed the capacity of piles. For this case, it is possible to apply 3-dimentional (3-D) finite element analysis that models 3-D geometries of landslide mass and each prevention pile. The chapter presents study of 3-D finite element analysis for simulating restraining mechanism of each pile constructed in landslide that is triggered by groundwater. It discusses modeling techniques for slip surface using joint element and group of piles with 3-D beam elements. Many landslides that require prevention piles in Japan are those with pre-existing sliding surface. The reasons for the high moment of piles on the left region may be related to the inclination of sliding plane.
