Creep analysis of an earth embankment on soft soil deposit with and without PVD improvement

Mohammad Rezania, Meghdad Bagheri, Mohaddeseh Mousavi Nezhad, N Sivasithamparam

Research output: Contribution to journalArticle

10 Citations (Scopus)
26 Downloads (Pure)

Abstract

In this paper, an anisotropic creep constitutive model, namely Creep-SCLAY1S is employed to study the installation effects of prefabricated vertical drains (PVDs) on the behavior of a full scale test embankment, namely Haarajoki embankment in Finland. The embankment was constructed on a natural soft soil with PVD installed to improve the drainage under one half of it. The Creep constitutive model used in this study, incorporates the effects of fabric anisotropy, structure and time within a critical state based framework. For comparison, the isotropic modified Cam clay (MCC) model and the rate-independent anisotropic S-CLAY1S model are also used for the analyses. The numerical predictions are compared with field measurements and the results indicate that the creep model provides an improved approximation of field settlements, and excess pore pressure build-up and dissipations. In addition, the application of two commonly used permeability matching techniques for two dimensional (2D) plane-strain analysis of the PVD problem is studied and the results are discussed highlighting their limitations and advantages.

Original languageEnglish
Pages (from-to)537-547
Number of pages11
JournalGeotextiles & Geomembranes
Volume45
Issue number5
Early online date13 Jul 2017
DOIs
Publication statusPublished - Oct 2017

Fingerprint

Embankments
Creep
Deposits
Earth (planet)
Soils
Constitutive models
Cams
Pore pressure
Drainage
Clay
Anisotropy

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Geotextiles & Geomembranes. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in[Geotextiles & Geomembranes, [45], [5], (2017)] DOI: 10.1016/j.geotexmem.2017.07.004

© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • Geosynthetics
  • Embankment
  • PVD
  • Soft clay
  • Creep behavior
  • Advanced constitutive model

Cite this

Creep analysis of an earth embankment on soft soil deposit with and without PVD improvement. / Rezania, Mohammad; Bagheri, Meghdad; Mousavi Nezhad, Mohaddeseh; Sivasithamparam, N.

In: Geotextiles & Geomembranes, Vol. 45, No. 5, 10.2017, p. 537-547.

Research output: Contribution to journalArticle

Rezania, Mohammad ; Bagheri, Meghdad ; Mousavi Nezhad, Mohaddeseh ; Sivasithamparam, N. / Creep analysis of an earth embankment on soft soil deposit with and without PVD improvement. In: Geotextiles & Geomembranes. 2017 ; Vol. 45, No. 5. pp. 537-547.
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