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A numerical study to evaluate the performance of deep mixed columns
Author(s) -
CINAR F. Tugce,
BOZBEY Ilknur,
KELESOGLU M. Kubilay
Publication year - 2018
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.737
Subject(s) - levee , parametric statistics , stiffness , plane stress , geotechnical engineering , context (archaeology) , structural engineering , modulus , elasticity (physics) , young's modulus , soil water , numerical analysis , geology , mathematics , engineering , finite element method , materials science , geometry , soil science , mathematical analysis , statistics , paleontology , composite material
Deep mixed (DM) columns are often used for embankments built on soft soils. In this study, a numerical study was carried out for a case study from the literature. The case study consists of DM columns that were constructed in a soft soil underlying an embankment. The numerical study aimed to carry out plain strain analyses and axial symmetry analyses and compare the results. Effects of DM modulus, column spacing and area replacement ratio on displacements and stress distributions were evaluated. In order to perform a two‐dimensional analysis of DM columns under plane‐strain conditions, conversions were made regarding the stiffness and strength of the soil‐column system. Parametric studies revealed that modulus of elasticity is a crucial parameter for deep mixing performance for all soil models used through the numerical analyses. The uncertainties and challenges of modeling a three dimensional geotechnical problem in two dimension are also stated within the context of the manuscript.