A nonlinear model of geosynthetic-reinforced granular fill over soft soil

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Abstract

This paper extends a recently developed one-dimensional foundation model for geosynthetic-reinforced granular fills over soft soil using a nonlinear constitutive model for the granular fill and a nonlinear spring model for soft soil. The mathematical form of the soil and spring models is a hyperbolic function that represents the nonlinear shear stress-shear strain behaviour of the granular fill and the nonlinear reaction of the soft soil. The foundation model is derived using the nonlinear soil and spring models, and the iterative finite difference scheme that is used to solve the nonlinear equations of the foundation model is presented. Parametric analyses of the nonlinear parameters are performed to study the effect on the foundation settlement and the mobilised tension in a geosynthetic layer. The computed results are presented and discussed.
Original languageEnglish
Pages (from-to)523-536
Number of pages14
JournalGeosynthetics International
Volume4
Issue number5
Publication statusPublished - 1 Dec 1997

Keywords

  • Finite difference
  • Foundation model
  • Geosynthetic reinforcement
  • Settlement
  • Soil improvement
  • Tension force

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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