›› 2010, Vol. 31 ›› Issue (5): 1545-1549.

• Geotechnical Engineering • Previous Articles     Next Articles

Research on analytical method of stability of expansive soil slope

LIU Hua-qiang1, YIN Zong-ze2   

  1. 1. Jiangsu Provincial Hydraulic Research Institute, Yangzhou Jiangsu, 225002, China; 2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China
  • Received:2009-05-10 Online:2010-05-10 Published:2010-05-24

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Abstract:

It is pointed out that the conventional method such as Bishop method is not incorrect itself for the stablity analysis of expansive soil slope, and only related conditions being short so as to cause the stability analysis cannot reflect the actual landslide characteristics. Based on the Bishop method, the factors are considered with introducing of the related conditions, which include the strength attenuation due to the cracking evolution, the depth of cracking, water pressure in cracks and the seepage force caused by rainfall. Thus the analytical method of slope stability in expansive soil areas is advanced so as to reflect the effect of cracking on the stability of expansive soil slope and the collapse features of expansive soil slope such as shallow layer, gradual traction, long-term, gentle and seasonal characteristics have been reproduced actually by the computed results.

Key words: expansive soil, slope stability, crack, shallow layer, gradual traction

CLC Number: 

  • TU 443
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