Numerical analysis of an embankment built on soft soil reinforced with deep mixing columns: Parametric study

作者：Venda Oliveira Paulo J; Pinheiro Joao L P; Correia Antonio A S

来源：Computers and Geotechnics, 2011, 38(4): 566-576.

DOI：10.1016/j.compgeo.2011.03.005

• Deep mixing columns
• Parametric study
• Numerical analysis
• Embankment on soft clay
• Modified Cam Clay model
• Soil improvement

The behaviour of an embankment built on normally consolidated soft soil reinforced with deep mixing columns is studied using a coupled soil-water formulation. The numerical predictions are analysed in terms of settlements, increments in vertical effective stresses and excess pore pressures. Firstly, the effectiveness of the use of deep mixing columns is studied. Afterwards, a parametric analysis is performed to study the influence on the soil-columns system of the replacement ratio (columns' spacing), the deformability of the embankment and columns, and the coefficient of vertical permeability of the columns.

• 出版日期2011-6