Deformation model of deep soil mixing using finite element method

Soil improvement is required to decrease the construction impact on the adjacent underground structures, when a deep excavation is carried out. Deep soil mixing (DSM) is a common method to control deformation caused by deep excavation. This method is an in situ soil mixing technology that mixes existing soil with cementitious materials. This paper presents a numerical modeling of DSM columns, which was conducted to compare the affected zone achieved by installing two different partially penetrated soil-cement columns using a small scale physical modelling. Test procedure and the finite element analysis that verify ground displacement patterns were described. The finite element method (FEM) was focused on the plane strain numerical modeling in ABAQUS. It was found that higher numbers of piles increase the effect of soil deformation where it will extend the soil in much deeper depth before it fails.

[1]  N. Yusoff,et al.  Landslide on a Deeply Landfilled Slope: A Case Study of Tembalang, Indonesia , 2014 .

[2]  Hoang-Hung Tran-Nguyen,et al.  A Field Trial Study on Jet Grouting to Improve the Subsoil in Ho Chi Minh City, Vietnam , 2014 .

[3]  Ramli Nazir,et al.  Comparative Study on Prediction of Axial Bearing Capacity of Driven Piles in Granular Materials , 2013 .

[4]  Hamid Nikraz,et al.  OFFSHORE GROUND IMPROVEMENT RECORDS , 2013 .

[5]  Catherine M. Tatarniuk,et al.  Case Study of a Road Embankment Failure Mitigated Using Deep Soil Mixing , 2012 .

[6]  A. S. Rashid,et al.  Behaviour of weak soils reinforced with soil columns formed by the deep mixing method , 2011 .

[7]  Deepa S. Liyanapathirana,et al.  Interpretation of the lime column penetration test , 2011 .

[8]  Benjamin Charbit.  Numerical analysis of laterally loaded lime/cement columns , 2010 .

[9]  P. de Buhan,et al.  A homogenization method for estimating the bearing capacity of soils reinforced by columns , 2005 .

[10]  W. A. Take.  The influence of seasonal moisture cycles on clay slopes , 2003 .

[11]  David White,et al.  An investigation into the behaviour of pressed-in piles , 2002 .

[12]  Malcolm D. Bolton,et al.  Measuring soil deformation in geotechnical models using digital images and PIV analysis , 2001 .

[13]  Malcolm D. Bolton,et al.  A deformation measurement system for geotechnical testing based on digital imaging, close-range photogrammetry, and PIV image analysis , 2001 .

[14]  Bolton,et al.  Homogenization method for numerical analysis of improved ground with cement-treated soil columns , 1999 .

[15]  N. Manoharan,et al.  Bearing capacity of surface footings by finite elements , 1995 .

[16]  R Babasaki,et al.  Construction and Testing of Deep Foundation Improvement Using the Deep Cement Mixing Method , 1991 .

[17]  R. Adrian.  Particle-Imaging Techniques for Experimental Fluid Mechanics , 1991 .