Numerical Study of Undrained 1D Compression for Unsaturated Soil

Kaitlin M. Hall, Patrick Joseph Fox, Ning Lu

Research output: Contribution to journalConference article

Abstract

This paper presents a new numerical analysis method for one-dimensional, large strain compression of a single undrained, unsaturated soil element. The method builds on the framework of the consolidation model, CS2, which has been used successfully for many consolidation-related engineering applications. In this work, soil properties and relationships are used to model undrained compression from first principles. A numerical study is performed to investigate the effect of increasing applied total stress on element compression and corresponding soil properties. Results indicate that volume change is non-linear and, as the element approaches saturation, an increase in total stress yields a nearly equivalent increase in pore air pressure. Ultimately, this work will serve as a point of departure for the development of a new large strain consolidation model for unsaturated soil.

Original languageEnglish (US)
Pages (from-to)313-322
Number of pages10
JournalGeotechnical Special Publication
Volume2017-November
Issue numberGSP 303
DOIs
StatePublished - Jan 1 2018
Event2nd Pan-American Conference on Unsaturated Soils: Swell-Shrink and Tropical Soils, PanAm-UNSAT 2017 - Dallas, United States
Duration: Nov 12 2017Nov 15 2017

Fingerprint

consolidation
compression
Consolidation
Soils
soil property
soil
volume change
pore pressure
atmospheric pressure
saturation
Yield stress
Numerical analysis
engineering
Air
method
analysis
effect

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

Hall, Kaitlin M. ; Fox, Patrick Joseph ; Lu, Ning. / Numerical Study of Undrained 1D Compression for Unsaturated Soil. In: Geotechnical Special Publication. 2018 ; Vol. 2017-November, No. GSP 303. pp. 313-322.
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Numerical Study of Undrained 1D Compression for Unsaturated Soil. / Hall, Kaitlin M.; Fox, Patrick Joseph; Lu, Ning.

In: Geotechnical Special Publication, Vol. 2017-November, No. GSP 303, 01.01.2018, p. 313-322.

Research output: Contribution to journalConference article

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