›› 2011, Vol. 32 ›› Issue (6): 1905-1909.

• Numerical Analysis • Previous Articles     Next Articles

Analysis of three-dimensional end effects of slopes

LIU Hua-li1, ZHU Da-yong2, QIAN Qi-hu1, LI Hong-wei1   

  1. 1. Engineering Institute of Engineer Corps, PLA University of Science and Technology, Nanjing 210007, China; 2. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China
  • Received:2010-08-02 Online:2011-06-10 Published:2011-06-21

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Abstract: By using the explicit solution of three-dimensional landslide stability based on modification of normal stress distribution over the slip surface, the influence of the three-dimensional end effects on the factor of safety is investigated. The three-dimensional geometry of the slip surface is assumed to consist of a cylinder and elliptical ends. The values of three-dimensional factor of safety are computed with a series of combination of geometrical parameters. The computation results show that the ratio of the 3D factor of safety to the 2D factor of safety (F3/F2) will decrease with the increase of the ratio of the width to height of sliding mass (L/H). When L/H =2, 5 and 10, the maximum value of F3/F2 is 1.3, 1.1 and 1.05 respectively. In addition, with the increase of the internal friction angle of the soil, F3/F2 will become smaller, that is, the three-dimensional end effect would reduce slightly.

Key words: end analysis, three-dimension, landslide, stability

CLC Number: 

  • TU472
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