Creep Characteristic Test and Creep Model of Frozen Soil
In order to research the creep deformation characteristics of frozen soil and the effect of various influencing factors on creep, indoor uniaxial creep tests were carried out on frozen soil specimens at temperatures of −5, −4, −3 and −2 °C under loads of 0.25, 0.5, and 0.75 σ t , respectively. The c...
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2023
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ftdoajarticles:oai:doaj.org/article:b81e4f70769648c1ab87c05c14d347af 2023-05-15T16:37:19+02:00 Creep Characteristic Test and Creep Model of Frozen Soil Yawu Shao Yonglu Suo Jiang Xiao Yuan Bai Tao Yang 2023-02-01T00:00:00Z https://doi.org/10.3390/su15053984 https://doaj.org/article/b81e4f70769648c1ab87c05c14d347af EN eng MDPI AG https://www.mdpi.com/2071-1050/15/5/3984 https://doaj.org/toc/2071-1050 doi:10.3390/su15053984 2071-1050 https://doaj.org/article/b81e4f70769648c1ab87c05c14d347af Sustainability, Vol 15, Iss 3984, p 3984 (2023) frozen soil creep properties decay creep creep constitutive equation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 article 2023 ftdoajarticles https://doi.org/10.3390/su15053984 2023-03-12T01:28:53Z In order to research the creep deformation characteristics of frozen soil and the effect of various influencing factors on creep, indoor uniaxial creep tests were carried out on frozen soil specimens at temperatures of −5, −4, −3 and −2 °C under loads of 0.25, 0.5, and 0.75 σ t , respectively. The creep deformation characteristics of frozen soil under different temperatures and load conditions are analyzed under unconfined conditions. The results show that under the uniaxial creep test conditions, when the load is low, there is no accelerated creep stage in the creep curve, which belongs to the decaying type creep; when the load is 0.75 σ t , the creep curve enters the stage of accelerated creep, and the creep turns non-attenuated; temperature is the most important external factor affecting permafrost soil creep, and the proportion of ice is the key internal factor for affecting permafrost soil creep, the temperature is negatively correlated with the proportion of ice and the sensitivity of creep rate to temperature and load increases with the decrease of the proportion of ice; the damage variable D is introduced to modify the creep constitutive equation of the frozen soil, the creep process of frozen soil is well described by the modified creep constitutive equation for frozen soil. Article in Journal/Newspaper Ice permafrost Directory of Open Access Journals: DOAJ Articles Sustainability 15 5 3984 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
frozen soil creep properties decay creep creep constitutive equation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
spellingShingle |
frozen soil creep properties decay creep creep constitutive equation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Yawu Shao Yonglu Suo Jiang Xiao Yuan Bai Tao Yang Creep Characteristic Test and Creep Model of Frozen Soil |
topic_facet |
frozen soil creep properties decay creep creep constitutive equation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
description |
In order to research the creep deformation characteristics of frozen soil and the effect of various influencing factors on creep, indoor uniaxial creep tests were carried out on frozen soil specimens at temperatures of −5, −4, −3 and −2 °C under loads of 0.25, 0.5, and 0.75 σ t , respectively. The creep deformation characteristics of frozen soil under different temperatures and load conditions are analyzed under unconfined conditions. The results show that under the uniaxial creep test conditions, when the load is low, there is no accelerated creep stage in the creep curve, which belongs to the decaying type creep; when the load is 0.75 σ t , the creep curve enters the stage of accelerated creep, and the creep turns non-attenuated; temperature is the most important external factor affecting permafrost soil creep, and the proportion of ice is the key internal factor for affecting permafrost soil creep, the temperature is negatively correlated with the proportion of ice and the sensitivity of creep rate to temperature and load increases with the decrease of the proportion of ice; the damage variable D is introduced to modify the creep constitutive equation of the frozen soil, the creep process of frozen soil is well described by the modified creep constitutive equation for frozen soil. |
format |
Article in Journal/Newspaper |
author |
Yawu Shao Yonglu Suo Jiang Xiao Yuan Bai Tao Yang |
author_facet |
Yawu Shao Yonglu Suo Jiang Xiao Yuan Bai Tao Yang |
author_sort |
Yawu Shao |
title |
Creep Characteristic Test and Creep Model of Frozen Soil |
title_short |
Creep Characteristic Test and Creep Model of Frozen Soil |
title_full |
Creep Characteristic Test and Creep Model of Frozen Soil |
title_fullStr |
Creep Characteristic Test and Creep Model of Frozen Soil |
title_full_unstemmed |
Creep Characteristic Test and Creep Model of Frozen Soil |
title_sort |
creep characteristic test and creep model of frozen soil |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/su15053984 https://doaj.org/article/b81e4f70769648c1ab87c05c14d347af |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Sustainability, Vol 15, Iss 3984, p 3984 (2023) |
op_relation |
https://www.mdpi.com/2071-1050/15/5/3984 https://doaj.org/toc/2071-1050 doi:10.3390/su15053984 2071-1050 https://doaj.org/article/b81e4f70769648c1ab87c05c14d347af |
op_doi |
https://doi.org/10.3390/su15053984 |
container_title |
Sustainability |
container_volume |
15 |
container_issue |
5 |
container_start_page |
3984 |
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1766027614335533056 |