Settlement Characteristic of Warm Permafrost Embankment with Two-Phase Closed Thermosyphons in Daxing’anling Mountains Region
The Xing’anling Mountains are the second largest permafrost region in China. One of the important issues for highways in these regions is how to control the settlement during the operation period to meet the demand of road stability. This paper selects a typical permafrost embankment in the Daxing’a...
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ftdoajarticles:oai:doaj.org/article:e09e96b5762d4aa7bb3db2d2e32ce2ff 2023-05-15T17:55:27+02:00 Settlement Characteristic of Warm Permafrost Embankment with Two-Phase Closed Thermosyphons in Daxing’anling Mountains Region Guanfu Wang Jiajun Bi Youkai Fan Long Zhu Feng Zhang Decheng Feng 2022-09-01T00:00:00Z https://doi.org/10.3390/su141912272 https://doaj.org/article/e09e96b5762d4aa7bb3db2d2e32ce2ff EN eng MDPI AG https://www.mdpi.com/2071-1050/14/19/12272 https://doaj.org/toc/2071-1050 doi:10.3390/su141912272 2071-1050 https://doaj.org/article/e09e96b5762d4aa7bb3db2d2e32ce2ff Sustainability, Vol 14, Iss 12272, p 12272 (2022) permafrost region embankment on-site monitoring finite element method thermal characteristics two-phase closed thermosyphon Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 article 2022 ftdoajarticles https://doi.org/10.3390/su141912272 2022-12-30T20:21:12Z The Xing’anling Mountains are the second largest permafrost region in China. One of the important issues for highways in these regions is how to control the settlement during the operation period to meet the demand of road stability. This paper selects a typical permafrost embankment in the Daxing’anling Mountains permafrost region, presents the finite element models of the embankment, and verifies it using field monitoring data to study the thermal and deformation characteristics within 50 years after construction. Calculation results illustrate that the permafrost under the embankment has degraded significantly during the operation period of the highway and led to serious settlement. To prevent the degradation of permafrost, a series of models with two-phase closed thermosyphons (TPCTs) were established to analyze the cooling effect. The contribution of different factors, including install locations, depth, and shapes of the TPCTs, were assessed on their effects on cooling the permafrost and reducing the embankment settlement. Results show that the TPCTs have an excellent cooling effect on the permafrost embankment. However, as the TPCTs change the temperature distribution of the embankment, they will inevitably cause differential settlement. In order to ensure the cooling effect and reduce the differential settlement of the embankment, it is suggested that L-shaped TPCTs should be adopted in the remedial engineering. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Sustainability 14 19 12272 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost region embankment on-site monitoring finite element method thermal characteristics two-phase closed thermosyphon Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
spellingShingle |
permafrost region embankment on-site monitoring finite element method thermal characteristics two-phase closed thermosyphon Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Guanfu Wang Jiajun Bi Youkai Fan Long Zhu Feng Zhang Decheng Feng Settlement Characteristic of Warm Permafrost Embankment with Two-Phase Closed Thermosyphons in Daxing’anling Mountains Region |
topic_facet |
permafrost region embankment on-site monitoring finite element method thermal characteristics two-phase closed thermosyphon Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
description |
The Xing’anling Mountains are the second largest permafrost region in China. One of the important issues for highways in these regions is how to control the settlement during the operation period to meet the demand of road stability. This paper selects a typical permafrost embankment in the Daxing’anling Mountains permafrost region, presents the finite element models of the embankment, and verifies it using field monitoring data to study the thermal and deformation characteristics within 50 years after construction. Calculation results illustrate that the permafrost under the embankment has degraded significantly during the operation period of the highway and led to serious settlement. To prevent the degradation of permafrost, a series of models with two-phase closed thermosyphons (TPCTs) were established to analyze the cooling effect. The contribution of different factors, including install locations, depth, and shapes of the TPCTs, were assessed on their effects on cooling the permafrost and reducing the embankment settlement. Results show that the TPCTs have an excellent cooling effect on the permafrost embankment. However, as the TPCTs change the temperature distribution of the embankment, they will inevitably cause differential settlement. In order to ensure the cooling effect and reduce the differential settlement of the embankment, it is suggested that L-shaped TPCTs should be adopted in the remedial engineering. |
format |
Article in Journal/Newspaper |
author |
Guanfu Wang Jiajun Bi Youkai Fan Long Zhu Feng Zhang Decheng Feng |
author_facet |
Guanfu Wang Jiajun Bi Youkai Fan Long Zhu Feng Zhang Decheng Feng |
author_sort |
Guanfu Wang |
title |
Settlement Characteristic of Warm Permafrost Embankment with Two-Phase Closed Thermosyphons in Daxing’anling Mountains Region |
title_short |
Settlement Characteristic of Warm Permafrost Embankment with Two-Phase Closed Thermosyphons in Daxing’anling Mountains Region |
title_full |
Settlement Characteristic of Warm Permafrost Embankment with Two-Phase Closed Thermosyphons in Daxing’anling Mountains Region |
title_fullStr |
Settlement Characteristic of Warm Permafrost Embankment with Two-Phase Closed Thermosyphons in Daxing’anling Mountains Region |
title_full_unstemmed |
Settlement Characteristic of Warm Permafrost Embankment with Two-Phase Closed Thermosyphons in Daxing’anling Mountains Region |
title_sort |
settlement characteristic of warm permafrost embankment with two-phase closed thermosyphons in daxing’anling mountains region |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/su141912272 https://doaj.org/article/e09e96b5762d4aa7bb3db2d2e32ce2ff |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Sustainability, Vol 14, Iss 12272, p 12272 (2022) |
op_relation |
https://www.mdpi.com/2071-1050/14/19/12272 https://doaj.org/toc/2071-1050 doi:10.3390/su141912272 2071-1050 https://doaj.org/article/e09e96b5762d4aa7bb3db2d2e32ce2ff |
op_doi |
https://doi.org/10.3390/su141912272 |
container_title |
Sustainability |
container_volume |
14 |
container_issue |
19 |
container_start_page |
12272 |
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1766163402727620608 |