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Open AccessArticle

Method to Control the Deformation of Anti-Slide Piles in Zhenzilin Landslide

1
School of Civil Engineering, Architecture of Henan University, Kaifeng 475004, Henan, China
2
College of Science, Engineering of Flinders University, 5042 Adelaide, Australia
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(8), 2831; https://doi.org/10.3390/app10082831
Received: 7 March 2020 / Revised: 9 April 2020 / Accepted: 14 April 2020 / Published: 19 April 2020
(This article belongs to the Special Issue Advances in Geotechnical Engineering)
Anti-slide piles were used in the region of the Zhenzilin landslide in Sichuan, China. The horizontal displacement of these piles exceeds specifications. Deterioration in bedrock properties may cause deformation, thereby causing landslide destabilization. An approach was developed for the analysis of anti-slide pile in two bedrocks with different strengths below the slip surface. A relationship has been established between the modulus of subgrade reaction of the first weak bedrock and reasonable embedded length for landfill slopes with strata of various strengths. Furthermore, the influence of embedding length on deformation has been studied to determine the reasonable embedded length, which helps reduce deformation and ensure landslide stability. The results reveal that (1) at a constant embedded length, horizontal displacement increases with the thickness of the first soft bedrock, meanwhile the maximum shear force remains constant, and the bending moment first increases followed by subsequent decrease; (2) with an increase in the embedded length, horizontal displacement and the maximum shear force of the pile in the embedded bedrock decrease, whereas the bending moment increases; (3) the maximum internal forces and horizontal displacement increase with a decrease in the subgrade reaction modulus of the first weak rock; and (4) the reasonable embedded length of an anti-slide pile increases with a decrease in the subgrade reaction modulus of the first weak bedrock. The proposed approach can be employed to design anti-slide piles in similar landslide regions to control pile-head deformation. View Full-Text
Keywords: colluvial landslide; anti-slide pile; embedded length of piles; multilayered bedrock colluvial landslide; anti-slide pile; embedded length of piles; multilayered bedrock
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Wang, H.; Wang, P.; Qin, H.; Yue, J.; Zhang, J. Method to Control the Deformation of Anti-Slide Piles in Zhenzilin Landslide. Appl. Sci. 2020, 10, 2831.

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