A Subgrade Reaction Solution for Anchored Dowel Piles to Stabilize Landslides

This paper reports a subgrade reaction solution for anchored piles used to stabilize landslides of which the sliding layer moves with a lateral displacement decreasing linearly with depth. The developed subgrade reaction solution can deal with the case in which pile segments in both sliding and stable layers are intermediate and flexible but not rigid, and also calculate the pile response under the additional resistance required to stabilize the landslide. The proposed subgrade reaction solution calculate the response of anchored piles with no iteration. The conventional solution can be obtained from the developed subgrade reaction solution for the case in which the movement of the sliding layer is uniform with depth. Calculation of the example described in Guidelines for Design of Landslide Control Steel Pipe Piles (JLS 2003) shows same pile response can be obtained by the proposed subgrade reaction solution and the conventional subgrade reaction solution in which an iteration process is necessary to obtain the results.