首页|Numerical Analysis of Surcharge Effect on Stability and Interaction Mechanism of Slope-Pile-Footing System

Numerical Analysis of Surcharge Effect on Stability and Interaction Mechanism of Slope-Pile-Footing System

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To investigate the stability and interaction mechanism of the slope-pile-footing system un-der surcharge effects, the finite difference method (FDM) was adopted to analyze the response laws of the stability of the reinforced slope, evolution of the critical slip surface, stress characteristic of retain-ing structures, deformation and failure modes of the slope foundation and building footing under sur-charge parameters, including the surcharge intensity, the surcharge position, and the surcharge width. The results show that surcharge parameters significantly affect the stability and the deformation char-acteristics of the slope-pile-footing system. Specifically speaking, with the increasing surcharge intensi-ty and the decreasing surcharge position and width, the deformation and failure mode of the system will gradually evolve in a direction that is harmful to its stability. The interaction mechanism of the slope-pile-footing system is further clarified as the load transfer of the building footing, the generation of the additional stress in the slope foundation, and the adjustment of pile bending moment due to the stress redistribution. Correspondingly, the safety of anti-slide piles will determine the stability of the slope foundation and building footing. These findings are expected to provide guidance for the compre-hensive development and utilization of filled slopes after reinforcement.

slope-pile-footing systemslope stabilityinteraction mechanismfinite difference methodgeotechnical engineeringsafety engineering

Chao Xu、Lei Xue、Yuan Cui、Mengyang Zhai

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Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China

Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China

College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Yellow River Laboratory, Zhengzhou University, Zhengzhou 450001, China

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National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2018YFC15053022019YFC15097014197724942090052

2024

10.1007/s12583-023-1866-7

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(3)
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