Influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay
Seasonal changes in groundwater levels affect the rate of downhill creep movements in slopes. This process has been studied in triaxial tests on undisturbed specimens of a natural clay from Bluefish Lake, 50 km north of Yellowknife, N.W.T. Specimens were first anisotropically consolidated to low str...
Published in: | Canadian Geotechnical Journal |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1992
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/t92-037 http://www.nrcresearchpress.com/doi/pdf/10.1139/t92-037 |
id |
crcansciencepubl:10.1139/t92-037 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/t92-037 2023-12-17T10:51:31+01:00 Influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay Eigenbrod, K. D. Graham, J. Burak, J.-P. 1992 http://dx.doi.org/10.1139/t92-037 http://www.nrcresearchpress.com/doi/pdf/10.1139/t92-037 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Geotechnical Journal volume 29, issue 2, page 326-333 ISSN 0008-3674 1208-6010 Civil and Structural Engineering Geotechnical Engineering and Engineering Geology journal-article 1992 crcansciencepubl https://doi.org/10.1139/t92-037 2023-11-19T13:39:30Z Seasonal changes in groundwater levels affect the rate of downhill creep movements in slopes. This process has been studied in triaxial tests on undisturbed specimens of a natural clay from Bluefish Lake, 50 km north of Yellowknife, N.W.T. Specimens were first anisotropically consolidated to low stresses that correspond to conditions at shallow depths in creeping slopes. Pore-water pressures (back pressures) in the specimens were then cycled systematically (over periods lasting 4–48 h) with the drainage leads open. Resulting axial and volumetric strains were measured, and shear and lateral strains deduced from them. Strain rates decreased with increasing total times of testing. They increased with increasing values of the ratio Δu/Δu f , with increasing values of deviator stress q, and with decreasing values of [Formula: see text]. Systematically increasing the pore-water pressures in the specimens produced clear estimates of failure at low stresses. Key words : slope, clay, creep, cyclic loading, ground water, triaxial. Article in Journal/Newspaper Yellowknife Canadian Science Publishing (via Crossref) Yellowknife Canadian Geotechnical Journal 29 2 326 333 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Civil and Structural Engineering Geotechnical Engineering and Engineering Geology |
spellingShingle |
Civil and Structural Engineering Geotechnical Engineering and Engineering Geology Eigenbrod, K. D. Graham, J. Burak, J.-P. Influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay |
topic_facet |
Civil and Structural Engineering Geotechnical Engineering and Engineering Geology |
description |
Seasonal changes in groundwater levels affect the rate of downhill creep movements in slopes. This process has been studied in triaxial tests on undisturbed specimens of a natural clay from Bluefish Lake, 50 km north of Yellowknife, N.W.T. Specimens were first anisotropically consolidated to low stresses that correspond to conditions at shallow depths in creeping slopes. Pore-water pressures (back pressures) in the specimens were then cycled systematically (over periods lasting 4–48 h) with the drainage leads open. Resulting axial and volumetric strains were measured, and shear and lateral strains deduced from them. Strain rates decreased with increasing total times of testing. They increased with increasing values of the ratio Δu/Δu f , with increasing values of deviator stress q, and with decreasing values of [Formula: see text]. Systematically increasing the pore-water pressures in the specimens produced clear estimates of failure at low stresses. Key words : slope, clay, creep, cyclic loading, ground water, triaxial. |
format |
Article in Journal/Newspaper |
author |
Eigenbrod, K. D. Graham, J. Burak, J.-P. |
author_facet |
Eigenbrod, K. D. Graham, J. Burak, J.-P. |
author_sort |
Eigenbrod, K. D. |
title |
Influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay |
title_short |
Influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay |
title_full |
Influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay |
title_fullStr |
Influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay |
title_full_unstemmed |
Influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay |
title_sort |
influence of cycling pore-water pressures and principal stress ratios on drained deformations in clay |
publisher |
Canadian Science Publishing |
publishDate |
1992 |
url |
http://dx.doi.org/10.1139/t92-037 http://www.nrcresearchpress.com/doi/pdf/10.1139/t92-037 |
geographic |
Yellowknife |
geographic_facet |
Yellowknife |
genre |
Yellowknife |
genre_facet |
Yellowknife |
op_source |
Canadian Geotechnical Journal volume 29, issue 2, page 326-333 ISSN 0008-3674 1208-6010 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/t92-037 |
container_title |
Canadian Geotechnical Journal |
container_volume |
29 |
container_issue |
2 |
container_start_page |
326 |
op_container_end_page |
333 |
_version_ |
1785576798327668736 |