Three-dimensional analysis of embankments on soft soils incorporating vertical drains by finite element method |
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Authors: | Jos Leito Borges |
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Institution: | Department of Civil Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal |
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Abstract: | Three-dimensional behaviour of an embankment on soft soils incorporating vertical drains is analysed by a numerical model based on the finite element method. The model, which incorporates the Biot’s consolidation theory (coupled formulation of the flow and equilibrium equations) and constitutive relations simulated by the p–q–θ critical state model, is applied on both the embankment with vertical drains (three-dimensional analysis) and the same problem but without vertical drains (two-dimensional analysis). Special emphasis is given to the analysis, during and after the construction period, of the excess pore pressures, settlements, horizontal displacements and stress levels. |
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Keywords: | Vertical drains Embankment Soft soils Finite element method Three-dimensional analysis Consolidation |
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