Stability Analysis of Slope Using Concrete Piles by Limit Equilibrium Method

Abstract

Investigation of the stability of slope is significant to geotechnical engineers considering its social and economical aspects. This study aims at evaluating the effect of using two and three concrete piles in slope on the factor of safety (FOS) of the slope. SLOPE/W was used to analyze the model and the investigation was done using the Limit Equilibrium Method (LEM). The study depicts that the position and inclination angles of concrete piles in the slope have noticeable impacts on the FOS of the slope. Elevated values of FOS of the slope are obtained when two piles are placed in the middle to lower region of the slope with pile inclination angle of 45⁰, 75⁰, 90⁰ and 105⁰. Maximum value of FOS for two concrete piles in slope is aobtained for a pile inclination of 105⁰. On the contrary, the use of three concrete piles at a time gives maximum value of FOS when the pile inclination angle is 60⁰.