Abstract
Frequent landslides have generated huge security threats and economic losses all over the world. As an important anti-slip retaining structure, anti-slide piles can maintain the slope stability. The distribution of soil resistance acting on piles is the critical factor influencing the design of anti-slide piles, and the method of calculating the internal force is directly related to the landslide treatment and construction cost. However, limitations in the method of calculating the internal force of anti-slide piles still exist. In this paper, the influence of the internal force of anti-slide piles both considering and ignoring the soil resistance acting on the piles was verified using ABAQUS software, revealing that the soil resistance indeed had a significant effect on the anti-slide piles, especially when the gradient of the soil before piles was less than 40°. Therefore, the formula for calculating the internal force of anti-slide piles was proposed considering the soil resistance. Based on this formula, the optimum quantity of steel reinforcement and the safety factor were compared in practical slope engineering. This proposed formula considering actual distribution of soil resistance can be used for approximate calculation for anti-slide piles, which can reduce the construction cost, especially in large and neutral landslide engineering.
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Acknowledgements
Authors are very thankful for the technical and financial support provided by the National Key R&D Program of China (2016YFC0800200), the National Natural Science Foundation of China (Nos. 41672294, 41877231), Project of Jiangsu Province Transportation Engineering Construction Bureau (CX-2019GC02) and Scientific Research Foundation of Graduate School of Southeast University (Grant No. YBPY1977).
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Liu, X., Cai, G., Liu, L. et al. Investigation of internal force of anti-slide pile on landslides considering the actual distribution of soil resistance acting on anti-slide piles. Nat Hazards 102, 1369–1392 (2020). https://doi.org/10.1007/s11069-020-03971-4
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DOI: https://doi.org/10.1007/s11069-020-03971-4