Three-dimensional analysis of slopes reinforced with piles

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• 作者：Yu-feng Gao ; Mao Ye ; Fei Zhang
• 关键词：three ; dimensional rotational failure mechanism ; stability of slopes ; limit analysis ; landslides ; piles
• 刊名：Journal of Central South University of Technology
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：22
• 期：6
• 页码：2322-2327
• 全文大小：1,446 KB
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• 作者单位：Yu-feng Gao (1)
  Mao Ye (1)
  Fei Zhang (1)
  
  1. Key Laboratory for Geomechanics and Embankment Engineering of Ministry of Education, Hohai University, Nanjing, 210098, China
  
• 刊物类别：Engineering
• 刊物主题：Engineering, general
  Metallic Materials
  Chinese Library of Science
  
• 出版者：Central South University, co-published with Springer
• ISSN：2227-5223

文摘

Based on the upper bound of limit analysis, the plane-strain analysis of the slopes reinforced with a row of piles to the 3D case was extended. A 3D rotational failure mechanism was adopted to yield the upper bound of the factor of safety. Parametric studies were carried out to explore the end effects of the slope failures and the effects of the pile location and diameter on the safety of the reinforced slopes. The results demonstrate that the end effects nearly have no effects on the most suitable location of the installed piles but have significant influence on the safety of the slopes. For a slope constrained to a narrow width, the slope becomes more stable owing to the contribution of the end effects. When the slope is reinforced with a row of piles in small space between piles, the effects of group piles are significant for evaluating the safety of slopes. The presented method is more appropriate for assessing the stability of slopes reinforced with piles and can be also utilized in the design of plies stabilizing the unstable slopes.