NUMERICAL ANALYSIS OF GEOSYNTHETIC-RAMMED AGGREGATE PIER SUPPORTED EMBANKMENTS

This paper presents results from numerical study to investigate the interactions between rammed aggregate piers and geosynthetic reinforcement in pier-supported embankments. The investigation was conducted using a two-dimensional, plane-strain, finite element model. Linear elastic, perfectly plastic constitutive model parameters were assumed fir the rammed aggregate piers, the matrix soil stiffness ratios considered in the analyses, a range of center-to-center soakings between piers was included. The geosynthetic reinforcement was modeled as a tensile element with various tensile stiffness values. Results obtained from this study provide insight into: (1) the interaction between the pier elements and the geosynthetic reinforcement to reduce differential settlement; (2) range of stress concentration ratio; and (3) tensile forced developed in the geosynthetic reinforcement. It is concluded that the efficiency of using geosynthetic reinforcement is improved as both the geosynthetic modulus and the pier-soil stiffness ratio increase.

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  • English

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  • Accession Number: 00987957
  • Record Type: Publication
  • ISBN: 0784407444
  • Report/Paper Numbers: Volume 1
  • Files: TRIS
  • Created Date: Mar 23 2005 12:00AM