Ground Temperature Monitoring and Simulation of Temperature Field Changes in Block-Stone Material Replacement Foundation for the Shiwei–Labudalin Highway
The current thermal balance of permafrost in northeastern China has been upset by human engineering construction disturbances and global warming. This has resulted in a rise in ground temperature and a fall in the permafrost table, which has a major impact on the stability, longevity, and operationa...
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ftdoajarticles:oai:doaj.org/article:21ab75ec06e14cd58b0476a79ccab90a 2024-09-15T18:29:25+00:00 Ground Temperature Monitoring and Simulation of Temperature Field Changes in Block-Stone Material Replacement Foundation for the Shiwei–Labudalin Highway Wei Shan Yutong Li Ying Guo Chengcheng Zhang Peijie Hou 2024-07-01T00:00:00Z https://doi.org/10.3390/app14146222 https://doaj.org/article/21ab75ec06e14cd58b0476a79ccab90a EN eng MDPI AG https://www.mdpi.com/2076-3417/14/14/6222 https://doaj.org/toc/2076-3417 doi:10.3390/app14146222 2076-3417 https://doaj.org/article/21ab75ec06e14cd58b0476a79ccab90a Applied Sciences, Vol 14, Iss 14, p 6222 (2024) permafrost highway subgrade ground temperature block-stone replacement sunny–shady slope effect Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 article 2024 ftdoajarticles https://doi.org/10.3390/app14146222 2024-08-05T17:48:51Z The current thermal balance of permafrost in northeastern China has been upset by human engineering construction disturbances and global warming. This has resulted in a rise in ground temperature and a fall in the permafrost table, which has a major impact on the stability, longevity, and operational safety of highway subgrades. To solve the issues above, the ground temperature monitoring data at K60+230 of the Shiwei–Labudalin highway were analyzed, and the numerical simulation of the temperature field change over 15 years was carried out for the ordinary subgrade as well as for sections of block-stone material subgrade with 1 m of straight-filled and different thicknesses of replacement fill (1 m, 2 m, 3 m, 4 m) by applying Comsol Multiphysis software. The results show that the temperature field of the subgrade exhibits significant asymmetry. There are variations in the rate of decline at different sites during the course of the 15 years when compared to where the permafrost table was located at the start of the study. Still, the rate of decline of the permafrost table is decreasing yearly. The straight-filled 1 m block-stone subgrade has a permafrost table 0.77 m higher in the bottom portion of its top surface than the ordinary subgrade. The replacement 1 m, 2 m, 3 m, and 4 m block-stone subgrade has a permafrost table in the lower portion of the top surface that is 1.05 m, 2.12 m, 3.32 m, and 4.75 m higher than the ordinary subgrade. The replacement block-stone subgrades, as opposed to ordinary subgrades, can strengthen the foundation, raise the permafrost table, and effectively reduce the impact of the upper boundary temperature on the lower permafrost. They can also increase the stability of permafrost subgrades. Of them, the block-stone filling with a thickness of 4 m and a particle size of 6–8 cm had the best impact. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Applied Sciences 14 14 6222 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost highway subgrade ground temperature block-stone replacement sunny–shady slope effect Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
permafrost highway subgrade ground temperature block-stone replacement sunny–shady slope effect Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Wei Shan Yutong Li Ying Guo Chengcheng Zhang Peijie Hou Ground Temperature Monitoring and Simulation of Temperature Field Changes in Block-Stone Material Replacement Foundation for the Shiwei–Labudalin Highway |
topic_facet |
permafrost highway subgrade ground temperature block-stone replacement sunny–shady slope effect Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 |
description |
The current thermal balance of permafrost in northeastern China has been upset by human engineering construction disturbances and global warming. This has resulted in a rise in ground temperature and a fall in the permafrost table, which has a major impact on the stability, longevity, and operational safety of highway subgrades. To solve the issues above, the ground temperature monitoring data at K60+230 of the Shiwei–Labudalin highway were analyzed, and the numerical simulation of the temperature field change over 15 years was carried out for the ordinary subgrade as well as for sections of block-stone material subgrade with 1 m of straight-filled and different thicknesses of replacement fill (1 m, 2 m, 3 m, 4 m) by applying Comsol Multiphysis software. The results show that the temperature field of the subgrade exhibits significant asymmetry. There are variations in the rate of decline at different sites during the course of the 15 years when compared to where the permafrost table was located at the start of the study. Still, the rate of decline of the permafrost table is decreasing yearly. The straight-filled 1 m block-stone subgrade has a permafrost table 0.77 m higher in the bottom portion of its top surface than the ordinary subgrade. The replacement 1 m, 2 m, 3 m, and 4 m block-stone subgrade has a permafrost table in the lower portion of the top surface that is 1.05 m, 2.12 m, 3.32 m, and 4.75 m higher than the ordinary subgrade. The replacement block-stone subgrades, as opposed to ordinary subgrades, can strengthen the foundation, raise the permafrost table, and effectively reduce the impact of the upper boundary temperature on the lower permafrost. They can also increase the stability of permafrost subgrades. Of them, the block-stone filling with a thickness of 4 m and a particle size of 6–8 cm had the best impact. |
format |
Article in Journal/Newspaper |
author |
Wei Shan Yutong Li Ying Guo Chengcheng Zhang Peijie Hou |
author_facet |
Wei Shan Yutong Li Ying Guo Chengcheng Zhang Peijie Hou |
author_sort |
Wei Shan |
title |
Ground Temperature Monitoring and Simulation of Temperature Field Changes in Block-Stone Material Replacement Foundation for the Shiwei–Labudalin Highway |
title_short |
Ground Temperature Monitoring and Simulation of Temperature Field Changes in Block-Stone Material Replacement Foundation for the Shiwei–Labudalin Highway |
title_full |
Ground Temperature Monitoring and Simulation of Temperature Field Changes in Block-Stone Material Replacement Foundation for the Shiwei–Labudalin Highway |
title_fullStr |
Ground Temperature Monitoring and Simulation of Temperature Field Changes in Block-Stone Material Replacement Foundation for the Shiwei–Labudalin Highway |
title_full_unstemmed |
Ground Temperature Monitoring and Simulation of Temperature Field Changes in Block-Stone Material Replacement Foundation for the Shiwei–Labudalin Highway |
title_sort |
ground temperature monitoring and simulation of temperature field changes in block-stone material replacement foundation for the shiwei–labudalin highway |
publisher |
MDPI AG |
publishDate |
2024 |
url |
https://doi.org/10.3390/app14146222 https://doaj.org/article/21ab75ec06e14cd58b0476a79ccab90a |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Applied Sciences, Vol 14, Iss 14, p 6222 (2024) |
op_relation |
https://www.mdpi.com/2076-3417/14/14/6222 https://doaj.org/toc/2076-3417 doi:10.3390/app14146222 2076-3417 https://doaj.org/article/21ab75ec06e14cd58b0476a79ccab90a |
op_doi |
https://doi.org/10.3390/app14146222 |
container_title |
Applied Sciences |
container_volume |
14 |
container_issue |
14 |
container_start_page |
6222 |
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1810470810527203328 |