American Society of Civil Engineers


Analysis of Geotextile Reinforced Embankment over Deep Mixed Soil Columns: Using Numerical and Analytical Tools


by Raja S. Madhyannapu, (Graduate student, Department of Civil and Environmental Engineering, The University of Texas at Arlington, Texas 76010; E-mail: mrsekhar@gmail), Anand J. Puppala, (Professor, Department of Civil and Environmental Engineering, The University of Texas at Arlington, Texas 76010 E-mail: anand@uta.edu), Sahadat Hossain, (Assistant Professor, Department of Civil and Environmental Engineering, The University of Texas at Arlington, Texas 76010), Jie Han, (Associate Professor, Department of Civil and Environmental Engineering, University of Kansas, Lawrence, Kansas), and Ali Porbaha, (Assistant Professor, Department of Civil and Environmental Engineering, California State University, Sacramento, California)
Section: Modeling and Characterization of Deep Soil Cement, pp. 1-6, (doi:  http://dx.doi.org/10.1061/40803(187)248)

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Document type: Conference Proceeding Paper
Part of: GeoCongress 2006: Geotechnical Engineering in the Information Technology Age
Abstract: Geotextile reinforced embankment constructed over deep mixed soil columns was analyzed for settlements using a finite element based Plaxis program. The embankment over treated soft clay was considered as two-dimensional plane strain problem. Soil materials were modeled as a linearly elastic perfectly plastic material following Mohr Coulomb failure criteria. Average settlement under the embankment was also estimated using a simplified analytical procedure. Predicted settlement results from finite element software, analytical procedure and available literature models were presented in this paper along with measured values. Comparison of above results showed that the numerical FEM program Plaxis predicted settlements that are close to the measured settlements. Variations among the methods predictions and possible reasons for these variations are explained.


ASCE Subject Headings:
Geosynthetics
Embankments
Soil mixing
Columns