Finite Element Analysis of Slope Stability Reinforced with Pile

Abstract

Various practical experimental designs and analysis processes of slope stability and its reinforcements have been suggested including: geotextiles, nails, and piles; this latter have been used widely and proven to be a functional and safe solution as a preventive measure in the stable slopes as well as for active landslides stabilizing. Numerical analyses based on the position and length of the pile in the slope, are conducted to determine the most favorable pile position. To obtain a comprehensive understanding of slope displacement behavior with, and without a reinforcing pile, we present in this study the results which are based on the Finite Element Analysis of slope stabilization analyses in terms of factor of safety and slide surface shape. First, the case of natural slope without pile is considered; we calculate the safety factor and the associated critical failure surface. On the other hand, we investigate the slope reinforcement by using a single pile. The parametric analysis shows that the pile should be located in the middle part of the slope to achieve the maximum safety factor. The analysis indicates also that the pile has a major influence on the shape of the failure surface. Finally, the important effects of shear strength parameters on the piled slope are examined.