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Open AccessArticle

Internal Force Analysis of Buried-boring Piles in the Yuanzishan Landslide

1
School of Civil Engineering and Architecture of Henan University, Kaifeng 475004, China
2
College of Science, Engineering of Flinders University, Adelaide 5042, Australia
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(16), 5416; https://doi.org/10.3390/app10165416
Received: 9 June 2020 / Revised: 30 July 2020 / Accepted: 3 August 2020 / Published: 5 August 2020
(This article belongs to the Special Issue Advances in Geotechnical Engineering)
The Yuanzishan landslide is an unstable slope in Langzhong County, located in northeast Sichuan province, China. The Guangyuan-Nanchong expressway passes through the front edge of the unstable slope, and subgrade excavation has resulted in slope deformation, which threatens the safety of the highway construction. Emergency landslide control requires reduction of the slope disturbance. This study aims to investigate the use of buried-boring piles as a potential method for emergency landslide control. A simplified calculation method was used for the design of the buried-boring piles, according to the limit equilibrium of the soil and the elastic foundation coefficient method. The measured internal force changes of the pile were compared, in order to determine the distribution coefficients of the driving force. A relationship between the driving force of the shared pile ratio and the buried depth ratios was then established. Furthermore, a variety of factors affecting the internal forces of the buried-boring pile and the lateral reaction of the soil were also studied. The results revealed that (1) there was a quadratic relationship between the driving force of the pile-shared ratio and the sliding depth ratios; (2) the maximum bending moment of the pile increased with an increase in the sliding depth ratio of the pile, following a power law relationship; (3) increasing the buried depth of the pile head reduced the influence of the pile diameter on the maximum internal forces; (4) increasing the pile diameter decreased the maximum lateral reaction of the soil. The buried-boring piles can be used in similarly unstable regions for emergency control of deforming slopes. View Full-Text
Keywords: colluvial landslide; buried-boring piles; embedded length of piles; internal force; slope instability colluvial landslide; buried-boring piles; embedded length of piles; internal force; slope instability
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MDPI and ACS Style

Wang, H.; Lv, Z.; Zhang, J.; Yue, J.; Qin, H.; Hung, C. Internal Force Analysis of Buried-boring Piles in the Yuanzishan Landslide. Appl. Sci. 2020, 10, 5416. https://doi.org/10.3390/app10165416

AMA Style

Wang H, Lv Z, Zhang J, Yue J, Qin H, Hung C. Internal Force Analysis of Buried-boring Piles in the Yuanzishan Landslide. Applied Sciences. 2020; 10(16):5416. https://doi.org/10.3390/app10165416

Chicago/Turabian Style

Wang, Hao; Lv, Zhiying; Zhang, Jianwei; Yue, Jianwei; Qin, Hongyu; Hung, Chaoying. 2020. "Internal Force Analysis of Buried-boring Piles in the Yuanzishan Landslide" Appl. Sci. 10, no. 16: 5416. https://doi.org/10.3390/app10165416

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