Research on the critical depth deterioration of the slip surface of soil slope in seasonal frozen area

Soil slope is one of the main parts of the road engineering. In seasonal frozen regions, shallow landslide hazards in soil slopes usually happen, which pose a serious threat to road safety operations. During the melting process, there forms stagnant water lubrication between the melting soil and freezing soil interface, which constitutes the weak interface of landslide hazard. In order to study the shallow landslide hazard of soil slope during the spring melt period in seasonal frozen areas, considering that the freezing point of the brine is lower than pure water, a simulated test method of the internal freezing and thawing interface of soil slope was designed. The critical slip surface depths after freeze-thaw circles in different water content are compared in the test, and the failure modes of the internal freezing and thawing interface of soil slope are verified. Then the sliding face depth damage model of the soil slope is put forward according to the experimental data. The results demonstrate that with the increasing water content and freeze-thaw circle times, the value of critical slip surface depth decreases gradually after freeze-thaw circles, the damage model which is obtained from the experimental data fitting, would present more reference of the slope design in the seasonal frozen area.

Language

  • English

Media Info

  • Pagination: pp 859-868
  • Monograph Title: Bearing capacity of roads, railways and airfields: proceedings of the ninth International Conference on the Bearing Capacity of Roads, Railways and Airfields: Trondheim, Norway 25-27 June 2013. Vol 1-2

Subject/Index Terms

Filing Info

  • Accession Number: 01596582
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • ISBN: 9788232102853
  • Files: ITRD, VTI
  • Created Date: Apr 21 2016 12:34PM