Three-dimensional parametric study of stone column-supported embankments on soft soils

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2018-05-25

Autores

Daniela Marques (Autor) Outra; José Leitão Borges (Autor) FEUP

Ata de Conferência Internacional

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

Páginas: 1415-1422

Indexação

Scopus

Outras Informações

DOI: 10.1201/9781351003629-178

Abstract (EN): Parametric studies of an embankment on soft soils reinforced with stone columns are performed using a computer program based on the finite element method. The computer program incorporates the Biot consolidation theory (fully coupled formulation of the flow and equilibrium equations) with constitutive relations simulated by the p-q-theta critical state model. A 3D numerical approach is used to study the influence of the following parameters: construction time of the embankment; permeability anisotropy of the soft soil; deformability of the stone column. Special emphasis is given to comparisons, during and after the construction period, of the excess pore pressures, settlements, horizontal displacements, stress levels and stress concentration factor. The results indicate that the consolidation of soft soil is significantly influenced by the permeability anisotropy and construction time of the embankment. The deformability of the stone column expressively influences the long term settlements and horizontal displacements.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8