Abstract
In this paper, a new formulation of pile design is proposed, in which equilibrium of force and moment of a landslide mass including the pile to prevent landslide are considered. The method for evaluating slope stability basically follows that of Janbu in this formulation.
In order to make the equations of equilibrium statically determinate, it was assumed that the internal force between the adjacent slices should be minimized at equilibrium.
The distributed force was adopted as normal force acting on the slip surface, and therefore the point of application of force can be easily calculated.
The derived formula can be applied to both cotter and reinforcement type piles and has no restriction as to the length of the pile in the design.
