Ground improvement using deep cement mixing columns under construction foundation in Tien Giang province

Abstract

ABSTRACT
Soil consolidation method, deep mixing method, is commonly used to protect soft ground in alluvial stratum in deltas such as Mekong Delta. In this study, the finite element method (FEM) of Plaxis 3D Foundation software is adopted to analyze the stress distribution on columns and ground base of the cement deep mixing (CDM) columns under construction foundation in Tien Giang Province. The stress distribution on CDM columns and their settlement are also given from
the analysis of FEM. The results simulate the soft ground consolidated with CDM columns under the construction foundation in Tien Giang with the CDM columns of 0.6 m diameter, 14.6 m length and 1.0m center to center spacing with the settlement of 31.06 mm and smaller 2.6 times than the allowable foundation settlement.

Keywords: Cement deep mixing columns; soil improved; soft soil; bearing capacity; Plaxis 3D Foundation.