Numerical Analysis of One-Dimensional Consolidation in Fine-Grained Soils

Abstract

The purpose of this study is to discuss which constitutive law can describes at best the observed behavior of Silt and Gravelly Clay on the basis of experimental and analytical results. To find numerical solution for saturated soils in oedometer test Plaxis 2D the finite element software was used. In order to obtain the compressibility, excess pore pressure and degree of consolidation curves; two constitutive laws were used in this work: the Soft Soil Model ‘SSM’ and the Modified Cam Clay Model ‘MCC’. Predicted results were found in good agreement with measurements obtained from experimental test and analytical solutions. The Soft Soil is in good agreement with experimental results in the compressibility curve; however the Modified Cam Clay Model is the most appropriate if compared with the analytical solution.

A novel CFD-DEM coupling method with moving boundary for simulating one-dimensional consolidation test

“…During the consolidation process, external loads cause fluid to escape from the pores as a result of excess pore pressure, and induce consolidation settlement of the soil [3]. In recent years, with the development of computer simulation technology, the use of numerical analysis methods to tackle similar geotechnical problems [4] has become the choice of many scholars [5][6][7][8][9].…”

Numerical Modelling of Oedometer Test

“…Several researchers and practitioners such as [3][4][5][6][7][8][9][10][11][12] dealt with the limits of Terzaghi's theory in the case of soils compressible clay. L Arabet [13], A. Hana et al [14] and M Klai et al [15], discussed the one-dimensional consolidation of fine saturated soils, in the form presented by Terzaghi in 1925, and described the oedometric test, which provides the parameters of this theory. They showed how the theory of one-dimensional consolidation served as a basis for modern models of soil DOI: 10.1515/sspjce-2020-0025 behaviour.…”