ABSTRACT
This chapter aims at solving the problems in the calculation and design of anti-slide piles presently. The basic principle of soil arching is expatiated, FLAC3D is applied to build the 3D model of anti-slide piles, gliding masses and anchorage zone, and the numerical simulation is carried out. In slope engineering, after anti-slide pile construction, soil mass between piles is tending to move outside the slope when the deformation of anti-slide piles itself occurs to restrain slope displacement. Soil-arch effect, which is the main mode of action in pile-soil interaction, has a bearing on whether antislide pile can give its full play to resist slide. The movement caused by thrust of the soil mass after piles is blocked by piles, the soil mass is squeezed, and soil-arch effect is functional. From the contour sketches, soil-arch effect mainly appears in the soil mass after and between piles.
