Page 4 - Technical E-Booklet Stone Column (Group 3)

A B S T R A C T

STONE COLUMNS ARE COMMONLY USED TO INCREASE THE

BEARING ABILITY OF WEAK SOIL AND TO DECREASE THE

SETTLEMENT OF CONSTRUCTED STRUCTURES ON THEM. A STONE

COLUMN IS ONE OF THE METHODS OF SOIL STABILISATION USED

TO INCREASE STRENGTH, DECREASE THE COMPRESSIBILITY OF

SOFT AND LOOSE FINE GRADED SOILS, ACCELERATE THE IMPACT

OF CONSOLIDATION, AND DECREASE SOIL LIQUEFACTION

CAPABILITY.THEY ARE MAINLY USED FOR STABELIZATION SOFT

SOIL SUCH AS SOFT CLAYS, SILTS AND SILTY-SANDS. IT IS

BELIEVED THAT THIS METHOD WAS USED FIRST IN FRANCE IN

1830S. THIS METHOD IS IN WIDE RANGE OF USE ESPECIALLY IN

EUROPE SINCE 1950S. THE COLUMNS CONSIST OF COMPACTED

GRAVEL OR CRUSHED STONE ARRANGED BY A VIBRATOR. THIS

ARTICLE PRESENTS INSTALLATION METHODS, DESIGN AND

FAILURE MODES OF STONE COLUMNS.

KEYWORDS: STONE COLUMN, SETTLEMENT, STABILIZATION,