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Soil-slope stability investigation using different nail inclinations: a comprehensive LSD, FEM and experimental approach
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Soil-slope stability investigation using different nail inclinations: a comprehensive LSD, FEM and experimental approach
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Journal Article
Soil-slope stability investigation using different nail inclinations: a comprehensive LSD, FEM and experimental approach
2024
Overview
Soil nailing is a versatile construction technique used for retaining structures, offshore structures, structures rehabilitation, and stabilizing natural as well as man-made earth slopes. This method was initially evolved in Europe and recognized in various provinces. This research investigates the relationship between uniform vertical and uniform horizontal loading on soil slopes to gain new insights into the effectiveness of soil nailing in stabilizing earth slopes. This study used a novel numerical investigation to determine the maximum factor of safety (FOS) at various nail inclinations of 0°, 5°, 10°, 15°, 20°, and 25° with the horizontal plane. To evaluate the effectiveness of the soil nail system for slope stabilization, the study considered significant limiting factors by using the limit state design (LSD) approach. In addition, the numerical method for identifying slope displacement, mathematical modelling for identifying nail displacement within soil slope, and experimental investigation in the laboratory were carried out in this study. The investigation's findings show that soil nailing is the more effective technique for slope stabilization. The 15° nail inclination with the horizontal plane produced the best results in terms of stability and FOS. Furthermore, considering the critical limiting factors, an inclination of 15° for soil nails exhibits optimal effectiveness in strengthening the stability of a vertical cut soil slope. This inclination angle allows for efficient load transfer and distribution and decreases the risk of slope failure. Overall, the 15° nail inclination with the horizontal plane provides valuable insights and an increased FOS.
