Skip to main content
Presentation
Elastic Visco-plastic Consolidation Modelling of Soft Clays Improved by Geosynthetic Vertical Drains
Faculty of Engineering - Papers (Archive)
  • Cholachat Rujikiatkamjorn, University of Wollongong
  • Buddhima Indraratna, University of Wollongong
RIS ID
14749
Publication Date
18-9-2006
Publication Details

This conference paper was originally published as Rujikiatkamjorn C and Indraratna, B, Elastic Visco-plastic Consolidation Modelling of Soft Clays Improved by Geosynthetic Vertical Drains, in Proceedings of the 8th International Conference on Geosynthetics, Yokahama, Japan, 18-22 September 2006.

Abstract

In this paper, an elastic viscoplastic (creep) model is incorporated into the consolidation equation to calculate settlements and excess pore pressures. A finite difference formulation for fully coupled axisymmetric consolidation is adopted to model both vertical and radial consolidation of a multi-layered soil. The effect of smear, non-linear stiffness and varying soil permeability with void ratio can be included in the analysis. The formulation is easily executed in an electronic spreadsheet such as Excel, and it is then validated by existing solutions. Finally, the analysis of a selected case history employing the writers’ formulation is employed to analyse an embankment constructed on the Sunshine Motorway, Queensland, Australia stabilised with geosynthetics vertical drains. The embankment behaviour is analysed by the authors using an elastic viscoplastic model and compared with the field data. The analysis of this case history verifies the improved accuracy of the predictions due to creep effects, in contrast to the conventional predictions which disregarded creep.

Link to publisher version (URL)
International Conference on Geosynthetics
Disciplines
Citation Information
Cholachat Rujikiatkamjorn and Buddhima Indraratna. "Elastic Visco-plastic Consolidation Modelling of Soft Clays Improved by Geosynthetic Vertical Drains" (2006)
Available at: http://works.bepress.com/crujikiatkamjorn/23/