Abstract: In two-dimensional profile,the resultant of the static lateral pressure on both sides of anti-slide piles are not equivalent and not in the same horizontal line because of the difference of scale and shape of slope, which will directly affect the flexural torque and shear of resistant pile. There are two effects of whole sliding and laterally swelling for the gliding mass under the action of gravity.When the dipping angle of the slide surface is slow, the lateral swelling will be predominant, which implies that load designing should depend on the difference of resultant of static lateral pressure on both sides of antisliding pile; When the dipping angle of the slide surface is steep, the whole sliding will be predominant, which implies that load design could be determined by classical slice methods. Furthermore, it is shown that numerical simulation is a powerful tool to calculate static lateral pressure with a case study by the finite element method.

Key words: landslide pushing force, slice method, static lateral pressure, antislide pile, numerical simulation