Numerical analysis of high capacity helical piles subjected to ground movement in weathered unstable clayey slope.

Abstract The aim of the present paper is to understand the behavior of high capacity helical piles subjected to ground movement. It was found that the plates of the high capacity helical piles placed near the slip surface move with the pile due to soil mass movement. The plates movement mobilizes the soil reactions beneath and above the plates, this creates a resisting moment, increasing eventually the resisting force offered by high capacity helical piles. The presence of plates does not only lead to an increase in the resisting force, but also to a diminution in the pile head deflection. [ABSTRACT FROM AUTHOR]