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 language | English (US) |
|---|---|
| Pages (from-to) | 313-322 |
| Number of pages | 10 |
| Journal | Geotechnical Special Publication |
| Volume | 2017-November |
| Issue number | GSP 303 |
| DOIs | |
| State | Published - Jan 1 2018 |
| Event | 2nd Pan-American Conference on Unsaturated Soils: Swell-Shrink and Tropical Soils, PanAm-UNSAT 2017 - Dallas, United States Duration: Nov 12 2017 → Nov 15 2017 |
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All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Architecture
- Building and Construction
- Geotechnical Engineering and Engineering Geology
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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 journal › Conference article
TY - JOUR
T1 - Numerical Study of Undrained 1D Compression for Unsaturated Soil
AU - Hall, Kaitlin M.
AU - Fox, Patrick Joseph
AU - Lu, Ning
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85049803262&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049803262&partnerID=8YFLogxK
U2 - 10.1061/9780784481707.031
DO - 10.1061/9780784481707.031
M3 - Conference article
VL - 2017-November
SP - 313
EP - 322
JO - Geotechnical Special Publication
JF - Geotechnical Special Publication
SN - 0895-0563
IS - GSP 303
ER -