Numerical Study of Soil Nailing Technique - Empirical, classical limit equilibrium and 2D-3D FEM applications
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Literature review was conducted on the state-of-the art and the state-of-the practice of the soil nailing technique. The literature review focused on design analysis and constructional aspects of the soil nailing technique and effects of the most important soil-nail system configuration (geometric) parameters such as nail spacing, nail inclination, wall-batter, back terrain slope and nail length. Some classical methods of analysis of internal and external stability of a soil-nail system were also presented and discussed.After conducting the literature review, numerical investigations were conducted on the effect soil-nail system configuration parameters and some soil parameters on the degree of stability and deformation of a soil-nail system. The numerical investigations were carried out using an own implemented simple wedge method followed by analysis using the Geosuite software product and the Plaxis 2D and 3D finite element packages. The different analysis results were then compared. In addition, in the finite element analyses, the effects of the different configuration parameters on the structural forces in the soil-nail system were investigated. Finally, a preliminary design and analysis of a soil-nail system was carried for a steep cut adjacent to a road construction.