Large deformation failure analysis of the soil slope based on the material point method

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• 作者：Peng Huang ; Shun-li Li ; Hu Guo ; Zhi-ming Hao
• 关键词：Material point method ; Soil slope ; Failure analysis ; Reposed angle
• 刊名：Computational Geosciences
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：19
• 期：4
• 页码：951-963
• 全文大小：1,487 KB
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• 作者单位：Peng Huang (1)
  Shun-li Li (1)
  Hu Guo (1)
  Zhi-ming Hao (1)
  
  1. Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang, 621900, China
  
• 刊物类别：Mathematics and Statistics
• 刊物主题：Mathematics
  Mathematical Modeling and IndustrialMathematics
  Geotechnical Engineering
  Hydrogeology
  Soil Science and Conservation
  
• 出版者：Springer Netherlands
• ISSN：1573-1499

文摘

The failure analysis of the soil slope is a very important topic in the field of geomechanics. Being a fully Lagrangian particle method, the material point method (MPM) has distinct advantages in solving the extremely large deformation problem. For both cohesive and non-cohesive soil slopes, the large deformation failure problems are analyzed using MPM and the Drucker-Prager constitutive model. For verification of the numerical method, the comparison between MPM and analytical solutions of the dam break problem is presented. Moreover, the numerical results by MPM are compared with the experimental results for the collapse of the aluminum-bar assemblage. Simulations reveal the cohesive soil slope under gravity has a shear band failure mode. Computational results show the reposed angle of non-cohesive soil slope is less than the internal friction angle, and the reason for this phenomenon is presented. The purpose of this study is to give a further understanding of the slope failure in different soil types and provide a computational tool for the failure analysis of soil slopes. Keywords Material point method Soil slope Failure analysis Reposed angle