Long-term axial performance of continuous-flight pile in frozen soil
A number of buildings in the Canadian Arctic communities have failed or showed signs of failure of pile foundations caused by climate-change-induced excessive settlements. Effects of climate change warrant alternative pile types and new installation methods. Installing a pile into frozen soils by th...
Published in: | Canadian Geotechnical Journal |
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Canadian Science Publishing
2023
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crcansciencepubl:10.1139/cgj-2022-0461 2024-04-07T07:50:09+00:00 Long-term axial performance of continuous-flight pile in frozen soil Gao, Shuai Sego, David Deng, Lijun China Scholarship Council Natural Sciences and Engineering Research Council of Canada Krinner Canada Inc. 2023 http://dx.doi.org/10.1139/cgj-2022-0461 https://cdnsciencepub.com/doi/full-xml/10.1139/cgj-2022-0461 https://cdnsciencepub.com/doi/pdf/10.1139/cgj-2022-0461 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Geotechnical Journal volume 60, issue 12, page 1835-1848 ISSN 0008-3674 1208-6010 Civil and Structural Engineering Geotechnical Engineering and Engineering Geology journal-article 2023 crcansciencepubl https://doi.org/10.1139/cgj-2022-0461 2024-03-08T00:37:30Z A number of buildings in the Canadian Arctic communities have failed or showed signs of failure of pile foundations caused by climate-change-induced excessive settlements. Effects of climate change warrant alternative pile types and new installation methods. Installing a pile into frozen soils by the torque method is rare in current practice of the Canadian Arctic. The continuous-flight pile is a new foundation type that is installed by torque. This study is aimed at investigating the axial load transfer of continuous-flight piles in frozen soils under long-term loads. A primary objective is to examine the effects of soil temperature, water content, and soil salinity on the resistance and the failure mode of continuous-flight piles in frozen soils. A series of axial load tests of model continuous-flight piles with a shaft diameter of 89 mm were carried out in the lab. Results show that primary and secondary creeps were observed during the constant load tests. The cylindrical shear mode and individual bearing mode were observed and inferred from the measured data. The adfreeze shear resistance and the individual plate bearing resistance under constant loads were estimated and verified using data from the literature. The adfreeze resistance increased with the applied load, and the plate bearing resistance increased as the normalized pile displacement rate increased. The mobilized adfreeze and plate bearing resistances suggest a potential increased load capacity of the continuous-flight pile compared to conventional smooth piles of similar diameter. Article in Journal/Newspaper Arctic Climate change Canadian Science Publishing Arctic Canadian Geotechnical Journal 60 12 1835 1848 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
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 Gao, Shuai Sego, David Deng, Lijun Long-term axial performance of continuous-flight pile in frozen soil |
topic_facet |
Civil and Structural Engineering Geotechnical Engineering and Engineering Geology |
description |
A number of buildings in the Canadian Arctic communities have failed or showed signs of failure of pile foundations caused by climate-change-induced excessive settlements. Effects of climate change warrant alternative pile types and new installation methods. Installing a pile into frozen soils by the torque method is rare in current practice of the Canadian Arctic. The continuous-flight pile is a new foundation type that is installed by torque. This study is aimed at investigating the axial load transfer of continuous-flight piles in frozen soils under long-term loads. A primary objective is to examine the effects of soil temperature, water content, and soil salinity on the resistance and the failure mode of continuous-flight piles in frozen soils. A series of axial load tests of model continuous-flight piles with a shaft diameter of 89 mm were carried out in the lab. Results show that primary and secondary creeps were observed during the constant load tests. The cylindrical shear mode and individual bearing mode were observed and inferred from the measured data. The adfreeze shear resistance and the individual plate bearing resistance under constant loads were estimated and verified using data from the literature. The adfreeze resistance increased with the applied load, and the plate bearing resistance increased as the normalized pile displacement rate increased. The mobilized adfreeze and plate bearing resistances suggest a potential increased load capacity of the continuous-flight pile compared to conventional smooth piles of similar diameter. |
author2 |
China Scholarship Council Natural Sciences and Engineering Research Council of Canada Krinner Canada Inc. |
format |
Article in Journal/Newspaper |
author |
Gao, Shuai Sego, David Deng, Lijun |
author_facet |
Gao, Shuai Sego, David Deng, Lijun |
author_sort |
Gao, Shuai |
title |
Long-term axial performance of continuous-flight pile in frozen soil |
title_short |
Long-term axial performance of continuous-flight pile in frozen soil |
title_full |
Long-term axial performance of continuous-flight pile in frozen soil |
title_fullStr |
Long-term axial performance of continuous-flight pile in frozen soil |
title_full_unstemmed |
Long-term axial performance of continuous-flight pile in frozen soil |
title_sort |
long-term axial performance of continuous-flight pile in frozen soil |
publisher |
Canadian Science Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1139/cgj-2022-0461 https://cdnsciencepub.com/doi/full-xml/10.1139/cgj-2022-0461 https://cdnsciencepub.com/doi/pdf/10.1139/cgj-2022-0461 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Canadian Geotechnical Journal volume 60, issue 12, page 1835-1848 ISSN 0008-3674 1208-6010 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cgj-2022-0461 |
container_title |
Canadian Geotechnical Journal |
container_volume |
60 |
container_issue |
12 |
container_start_page |
1835 |
op_container_end_page |
1848 |
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1795664829213573120 |