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Stability Analysis of Loess Slopes Based on Reliability Concepts

  • Tonglu Li
  • Yanan Zheng
  • Ping Li
Chapter
Part of the Environmental Science and Engineering book series (ESE)

Abstract

In engineering designs for cut slopes excavated in loess areas during highway construction, knowledge of the strength of the loess, including cohesion and friction angle, are essential, but these parameters are often very uncertain. Thus, the slope design needs to be based on field data rather than calculation. Field survey data on natural loess slopes could be used as a basis for cut slope design. This paper defines the natural limit state slope, and investigates the natural slopes in the field in Shaanxi province of China. Based on critical slopes, the reliability of loess slopes is calculated by the Monte Carlo method for various combination of loess strength parameters. The criterion of probability of failure is suggested for the loess slope design. Probability theory can be used to deal with the variation of soil properties in the loess slope design.

Keywords

Loess Slope Reliability Probability 

Notes

Acknowledgments

This research work was aided by National natural science foundation of China (No.NSFC-40772181 and NSFC-40972182). The support of this agency is gratefully acknowledged.

References

  1. Chen ZY (2003) Soil slope stability analysis. Press of water conservancy and electric power. Beijing, pp 150–160 (in Chinese)Google Scholar
  2. Christian JT, Charles CL, Gregory BB (1994) Reliability applied to slope stability analysis. J Geotech Eng 120(12):2180–2207CrossRefGoogle Scholar
  3. Gorden AF, Griffiths DV, Anthony U (2003) A slope stability model for spatially random soils, applications of statistics and probability in civil engineering. Mill press, RotterdamGoogle Scholar
  4. Li P, Wang BG, Li TL (2009a) Study on analogism used in highway cutting loess slope design. J Highw Transp Res Dev 26(2):2–5Google Scholar
  5. Li P, Wang BG, Li TL (2009b) Study on the reliability for the highway cutting loess slopes in Shaanxi province. Chin J Highw Transp 22(6):18–25Google Scholar
  6. Li et al (2003) A new method for quick searching potential sliding surface of the simple earth slope. J Chang’an Univ (Earth Sci Edn), 25(3): 56–59 (in Chinese)Google Scholar
  7. Ni WK, Han QL (2001) Statistical analysis of physical and mechanical indexes of the typical loess. J Eng Geol Chin 9(1):62–67Google Scholar
  8. Raymond WMC, Wilson HT (2005) Reliability of deteriorating slopes. Geotech Geoenviron Eng 131(5):589–597CrossRefGoogle Scholar
  9. Sivakumar BGL, Mukesh MD (2004) Effect of soil variability on reliability of soil slopes. Geotechnique 54(5):335–337CrossRefGoogle Scholar
  10. Sivakumar BGL, Murthy DSN (2005) Reliability analysis of unsaturated soil slopes. Geotech Geoenviron Eng 131(11):1423–1428CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of Geological EngineeringChang’an UniversityXi’anChina

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