Performance of slope stabilizing piles: A numerical study

This research was carried out to investigate the effects of soil type, slope angle, pile diameter, pile spacing factors on slope stability piles using 3D finite element analyses. The research was conducted to determine the shear forces developed on piles with 60 cm, 80 cm and 100 cm diameters placed at 1 meter, 1.5 meter, 2 meter, 2.5 meter and 3 meter intervals on slope models of 30 degrees and 45 degrees those shear forces were evaluated in comparison with the ones calculated using plastic defomation theory of Ito And Matsui. In the comparisons made as a result of 120 FEA analyses and 1320 calculations performed with all possible combinations, it has been observed that the shear forces acting on the piles increase as the soil stiffness decreases and the slope angle increases In addition, the increase in pile diameters brings about an increase in shear forces developed on the piles. It has been seen that in the analyses with slope stability factor of safety values close to 1, the shear forces on piles have been getting more consistent with those obtained using Ito and Matsui theorem. In this study, according to the results of the analysis, the consistency of the shear force transferred to the piles with the ito matsui theorem was questioned and it was observed that the consistency increased as the safety factor approached 1.