Stone column-supported embankments on soft soils: Three-dimensional analysis through the finite element method

• Type: Article in International Conference Proceedings Book
• Date: 2018-05-25

Authors

Daniela Marques (Author) Other; José Leitão Borges (Author) FEUP

Conference proceedings International

Title: NUMGE 2018 - 9th European Conference on Numerical Methods in Geotechnical Engineering

Pages: 1407-1414

Indexing

Scopus

Other information

Abstract (EN): In this study, the three-dimensional behavior of a stone column-supported embankment over a soft soil is analyzed using a computer code based on the finite element method. The computer code incorporates the Biot consolidation theory (fully coupled formulation of the flow and equilibrium equations) with soil constitutive relations simulated by the p-q-theta critical state model. Special emphasis is given to the analysis, during and after the construction period, of the excess pore pressures, settlements, horizontal displacements, effective stresses, stress levels, arching effect and stress concentration ratio for each column and its variation in depth. To study the overall effect of using the stone column technique, comparisons between the embankment with stone columns (three-dimensional analysis) and the embankment without stone columns (two-dimensional analysis) are also included. Several overall conclusions are put forward.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8