Working Mechanics of Geogrid-Enveloping Flexible Reinforcement Treating Cut Slope in Expansive Soil

A slope model that shows the geogrid structural construction at the Nanning outer ring expressway is established using FLAC3D after the property of typical expansive soil in Nanning was tested. Geogrid-soil interaction in the dry-wet cycle affected zone of the slope is analyzed by the thermo-mechanical coupling module in FLAC3D based on the similarity between the thermal effect of temperature variation and expansion effect of hygroscopic expansion of expansive soil. The development rule of stress, deformation, and generalized plastic strain in the turn-up geogrid flexible reinforcement of cut slope in expansive soil are obtained. The “frame hoop” mechanism of flexible reinforced cut slope in expansive soil is analyzed and verified according to the stress and deformation of the geogrid in the cut slope in the expansive soil. The results are compared with the stress, strain, and stability of untreated cut slope in expansive soil.


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  • Accession Number: 01600306
  • Record Type: Publication
  • Files: TRIS, ASCE
  • Created Date: May 10 2016 3:02PM