Settlement response of soft soils reinforced by compacted sand columns

Ilan Juran, A. Guermazi

Research output: Contribution to journalArticle

Abstract

Stone/compacted sand columns is a technique of soil reinforcement that is frequently implemented in soft cohesive soils to increase the bearing capacity of the foundation soil, to reduce the settlement, and to accelerate the consolidation of the surrounding saturated soft soil. The soil-column interaction depends on several parameters, including the loading process and the loading rate, the replacement factor, the group effect, and the partial consolidation of the soft soil due to radial drainage through the column. This paper presents the results of a laboratory study that was conducted to investigate the effect of these various parameters on the settlement response of a soft foundation soil reinforced by compacted sand columns. Triaxial compression tests under different boundary conditions were performed on composite soil specimens made of annular silty soil samples with a central, compacted river-sand column. These tests, performed in a specially modified triaxial cell, show that the group effect, the replacement factor, and the consolidation of the soft soil have a significant effect on the vertical stress concentration on the column and on the settlement reduction of the foundation soil.

Original languageEnglish (US)
Pages (from-to)930-943
Number of pages14
JournalJournal of Geotechnical Engineering
Volume114
Issue number8
DOIs
StatePublished - 1988

Fingerprint

soft soil
Sand
Soils
sand
consolidation
soil
replacement
soil reinforcement
Consolidation
silty soil
cohesive soil
soil column
bearing capacity
boundary condition
compression
drainage
effect
river
Bearing capacity
Drainage

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Engineering(all)

Cite this

Settlement response of soft soils reinforced by compacted sand columns. / Juran, Ilan; Guermazi, A.

In: Journal of Geotechnical Engineering, Vol. 114, No. 8, 1988, p. 930-943.

Research output: Contribution to journalArticle

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