Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes
Pile foundations combined with ventilation spaces under floors are the most common method in buildings over permafrost. The safety and stability of buildings are closely related to the temperature of permafrost. However, there are limitations of understanding on this method in the high-altitude, war...
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KeAi Communications Co., Ltd.
2023
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Online Access: | https://doi.org/10.1016/j.accre.2023.03.004 https://doaj.org/article/ff089c4c32054b00850afda6b6c95135 |
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ftdoajarticles:oai:doaj.org/article:ff089c4c32054b00850afda6b6c95135 2023-06-18T03:42:37+02:00 Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes Xin HOU Ji CHEN Yu SHENG Peng-Fei RUI You-Qian LIU Shou-Hong ZHANG Tian-Chun DONG Jia-Wei GAO 2023-04-01T00:00:00Z https://doi.org/10.1016/j.accre.2023.03.004 https://doaj.org/article/ff089c4c32054b00850afda6b6c95135 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S1674927823000370 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2023.03.004 https://doaj.org/article/ff089c4c32054b00850afda6b6c95135 Advances in Climate Change Research, Vol 14, Iss 2, Pp 267-275 (2023) Warm permafrost Infrastructure Open ventilation space Pile foundation Cooling effect Meteorology. Climatology QC851-999 Social sciences (General) H1-99 article 2023 ftdoajarticles https://doi.org/10.1016/j.accre.2023.03.004 2023-06-04T00:37:51Z Pile foundations combined with ventilation spaces under floors are the most common method in buildings over permafrost. The safety and stability of buildings are closely related to the temperature of permafrost. However, there are limitations of understanding on this method in the high-altitude, warm (>−1 °C) permafrost areas on the Qinghai–Tibet Plateau. In this study, the thermal stability of permafrost foundation soils under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes was studied through field observations of ground and air temperatures, wind speed, net radiation from 2017 to 2021. The results indicated that the open ventilation space exerted an effective cooling effect on the underlying permafrost and pile foundations from March to October, while a thermal insulation effect was observed from November to February of the following year, but overall, the cooling effect dominated; the cooling effect of open ventilation spaces differed spatially. The permafrost temperature on the south-facing side was higher than that on the north-facing side, and those on the east and west sides were higher than that directly under the open ventilation space of the building. This study also demonstrated that radiation shielded by the building was a main factor of the cooling effect of open ventilation spaces, and the cooling effect of open ventilation spaces could accelerate the back-freezing of the cast-in-place (CIP) pile foundations. This structure could effectively maintain the frozen state of the underlying warm permafrost at high elevations on the interior Qinghai–Tibet Plateau. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Advances in Climate Change Research 14 2 267 275 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Warm permafrost Infrastructure Open ventilation space Pile foundation Cooling effect Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
spellingShingle |
Warm permafrost Infrastructure Open ventilation space Pile foundation Cooling effect Meteorology. Climatology QC851-999 Social sciences (General) H1-99 Xin HOU Ji CHEN Yu SHENG Peng-Fei RUI You-Qian LIU Shou-Hong ZHANG Tian-Chun DONG Jia-Wei GAO Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes |
topic_facet |
Warm permafrost Infrastructure Open ventilation space Pile foundation Cooling effect Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
description |
Pile foundations combined with ventilation spaces under floors are the most common method in buildings over permafrost. The safety and stability of buildings are closely related to the temperature of permafrost. However, there are limitations of understanding on this method in the high-altitude, warm (>−1 °C) permafrost areas on the Qinghai–Tibet Plateau. In this study, the thermal stability of permafrost foundation soils under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes was studied through field observations of ground and air temperatures, wind speed, net radiation from 2017 to 2021. The results indicated that the open ventilation space exerted an effective cooling effect on the underlying permafrost and pile foundations from March to October, while a thermal insulation effect was observed from November to February of the following year, but overall, the cooling effect dominated; the cooling effect of open ventilation spaces differed spatially. The permafrost temperature on the south-facing side was higher than that on the north-facing side, and those on the east and west sides were higher than that directly under the open ventilation space of the building. This study also demonstrated that radiation shielded by the building was a main factor of the cooling effect of open ventilation spaces, and the cooling effect of open ventilation spaces could accelerate the back-freezing of the cast-in-place (CIP) pile foundations. This structure could effectively maintain the frozen state of the underlying warm permafrost at high elevations on the interior Qinghai–Tibet Plateau. |
format |
Article in Journal/Newspaper |
author |
Xin HOU Ji CHEN Yu SHENG Peng-Fei RUI You-Qian LIU Shou-Hong ZHANG Tian-Chun DONG Jia-Wei GAO |
author_facet |
Xin HOU Ji CHEN Yu SHENG Peng-Fei RUI You-Qian LIU Shou-Hong ZHANG Tian-Chun DONG Jia-Wei GAO |
author_sort |
Xin HOU |
title |
Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes |
title_short |
Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes |
title_full |
Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes |
title_fullStr |
Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes |
title_full_unstemmed |
Field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes |
title_sort |
field observations of the thermal stability of permafrost under buildings with an underfloor open ventilation space and pile foundations in warm permafrost at high altitudes |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2023 |
url |
https://doi.org/10.1016/j.accre.2023.03.004 https://doaj.org/article/ff089c4c32054b00850afda6b6c95135 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Advances in Climate Change Research, Vol 14, Iss 2, Pp 267-275 (2023) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674927823000370 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2023.03.004 https://doaj.org/article/ff089c4c32054b00850afda6b6c95135 |
op_doi |
https://doi.org/10.1016/j.accre.2023.03.004 |
container_title |
Advances in Climate Change Research |
container_volume |
14 |
container_issue |
2 |
container_start_page |
267 |
op_container_end_page |
275 |
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1769008600903057408 |