Abstract
The effective stress is an important state soil variable that controls the mechanical behavior of soils. The depth profile of in-situ effective stress is usually determined using soil unit weights obtained from undisturbed soil samples collected at different depths. The undisturbed soil sampling is subjected to various uncertainties, which becomes more pronounced as target depth increases or offshore condition is involved. The piezo-cone penetration test (CPTU) has been widely used for characterizing in-situ soil conditions. While a variety of CPTU-based methods have been proposed for various geotechnical purposes, less attention has been given to the direct assessment of in-situ effective stress. In the present study, a CPTU-based methodology for profiling in-situ stresses in clayey soils is presented.Acorrelation model between the effective stress and the cone penetration resistances is introduced assuming that there is a unique correlation between the cone resistance, effective stress and undrained shear strength. Field considerations for profiling in-situ stresses from CPTU results are presented. Case examples are selected from the literature and adopted to check the validity of the CPTU-based method.
| Original language | English |
|---|---|
| Title of host publication | Frontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015 |
| Editors | Vaughan Meyer |
| Publisher | CRC Press/Balkema |
| Pages | 1079-1084 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781138028487 |
| Publication status | Published - 2015 Jan 1 |
| Event | Proceedings of the 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015 - Oslo, Norway Duration: 2015 Jun 10 → 2015 Jun 12 |
Publication series
| Name | Frontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015 |
|---|
Other
| Other | Proceedings of the 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015 |
|---|---|
| Country | Norway |
| City | Oslo |
| Period | 15/6/10 → 15/6/12 |
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All Science Journal Classification (ASJC) codes
- Geotechnical Engineering and Engineering Geology
Cite this
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Characterization of in-situ effective stress profiles in clays based on piezo-cone penetration test (CPTU) results. / Lee, J.; Park, D.; Kyung, D.; Park, D.; Kim, I.
Frontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015. ed. / Vaughan Meyer. CRC Press/Balkema, 2015. p. 1079-1084 (Frontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Characterization of in-situ effective stress profiles in clays based on piezo-cone penetration test (CPTU) results
AU - Lee, J.
AU - Park, D.
AU - Kyung, D.
AU - Park, D.
AU - Kim, I.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - The effective stress is an important state soil variable that controls the mechanical behavior of soils. The depth profile of in-situ effective stress is usually determined using soil unit weights obtained from undisturbed soil samples collected at different depths. The undisturbed soil sampling is subjected to various uncertainties, which becomes more pronounced as target depth increases or offshore condition is involved. The piezo-cone penetration test (CPTU) has been widely used for characterizing in-situ soil conditions. While a variety of CPTU-based methods have been proposed for various geotechnical purposes, less attention has been given to the direct assessment of in-situ effective stress. In the present study, a CPTU-based methodology for profiling in-situ stresses in clayey soils is presented.Acorrelation model between the effective stress and the cone penetration resistances is introduced assuming that there is a unique correlation between the cone resistance, effective stress and undrained shear strength. Field considerations for profiling in-situ stresses from CPTU results are presented. Case examples are selected from the literature and adopted to check the validity of the CPTU-based method.
AB - The effective stress is an important state soil variable that controls the mechanical behavior of soils. The depth profile of in-situ effective stress is usually determined using soil unit weights obtained from undisturbed soil samples collected at different depths. The undisturbed soil sampling is subjected to various uncertainties, which becomes more pronounced as target depth increases or offshore condition is involved. The piezo-cone penetration test (CPTU) has been widely used for characterizing in-situ soil conditions. While a variety of CPTU-based methods have been proposed for various geotechnical purposes, less attention has been given to the direct assessment of in-situ effective stress. In the present study, a CPTU-based methodology for profiling in-situ stresses in clayey soils is presented.Acorrelation model between the effective stress and the cone penetration resistances is introduced assuming that there is a unique correlation between the cone resistance, effective stress and undrained shear strength. Field considerations for profiling in-situ stresses from CPTU results are presented. Case examples are selected from the literature and adopted to check the validity of the CPTU-based method.
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M3 - Conference contribution
AN - SCOPUS:84938531337
T3 - Frontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015
SP - 1079
EP - 1084
BT - Frontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015
A2 - Meyer, Vaughan
PB - CRC Press/Balkema
ER -