Improving the strength of non-homogenous soils using the stone column technique

Research output: Contribution to journalArticle

Abstract

A numerical solution was provided in order to improve the understanding of the behaviour of stone columns in an embankment system. A two-dimensional finite element method was adopted in this study to estimate the bearing capacity and safety factor against the deep-seated failure of an embankment over stone column-improved non-homogenous soft soil. The factors influencing the behaviour of stone columns were investigated, including the spacing ratio, diameter, friction angle, unit weight, elastic modulus and Poisson's ratio of the stone columns and the height of the embankment fill. 15-node triangular elements in the Plaxis 2D (v8.2) software based on the plane strain concept were used to examine these features. According to the results of this study, it was observed that the load carrying capacity was developed as the diameter and the stiffness of the stone columns were enhanced, where the internal friction angle of the stone columns exerted the greatest influence compared to all the other parameters. The safety factor for most of the cases ranged between 2.2 to 2.6, whereby the lower value was recommended.

Original languageEnglish
Pages (from-to)157-166
Number of pages10
JournalJournal of GeoEngineering
Volume12
Issue number4
DOIs
Publication statusPublished - 1 Jan 2017

Fingerprint

Embankments
Safety factor
Soils
embankment
soil
Internal friction
Poisson ratio
Load limits
Bearing capacity
friction
Elastic moduli
Stiffness
Friction
safety
Finite element method
plane strain
soft soil
elastic modulus
bearing capacity
carrying capacity

Keywords

  • Bearing capacity
  • Finite element method
  • Safety factor
  • Stone columns

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

Improving the strength of non-homogenous soils using the stone column technique. / Gaber, Maryam; Kasa, Anuar; Abd. Rahman, Norinah.

In: Journal of GeoEngineering, Vol. 12, No. 4, 01.01.2017, p. 157-166.

Research output: Contribution to journalArticle

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