Temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions
To maintain the temperature and settlement stability of a subgrade, a combination of graded crushed rock layer and insulation layer may be applied to optimize pavement structures. This study verifies a proposed numerical model of pavement and subgrade design in permafrost regions and evaluates tempe...
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crplos:10.1371/journal.pone.0274843 2024-05-19T07:47:08+00:00 Temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions Liu, Xiaolan Fu, Chuanwei Li, Shunqun Mosa, Ahmed Mancy National Natural Science Foundation of China Key Technologies R&D program of Tianjin 2022 http://dx.doi.org/10.1371/journal.pone.0274843 https://dx.plos.org/10.1371/journal.pone.0274843 en eng Public Library of Science (PLoS) http://creativecommons.org/licenses/by/4.0/ PLOS ONE volume 17, issue 10, page e0274843 ISSN 1932-6203 journal-article 2022 crplos https://doi.org/10.1371/journal.pone.0274843 2024-05-01T06:58:51Z To maintain the temperature and settlement stability of a subgrade, a combination of graded crushed rock layer and insulation layer may be applied to optimize pavement structures. This study verifies a proposed numerical model of pavement and subgrade design in permafrost regions and evaluates temperature and settlement characteristics at different particle size and thickness of graded crushed rock layer and different thickness and location of insulation layer. The results show that the temperature and settlement of the combination of graded crushed-rock layer and insulation layer decrease significantly as the particle diameter and thickness of graded crushed-rock layer increase, and vary little when the thickness of insulation layer is more than 0.15 m. The location of installation layer has significant influence on the temperature of the subbase layer, but has little influence on the temperature of the subgrade. The maximum settlement of the pavement structure and subgrade decreases when the installation layer varies from the top of the subbase layer to the bottom of the subbase layer. The optimal combination of graded crushed-rock layer and insulation layer is that the 0.15 m-thickness installation layer is at the bottom of the 0.50 m-thickness graded crushed-rock layer with the particle size of 6–8 cm. This study provides a theoretical basis for the design, construction, operation, maintenance, and safety management of airport runways in permafrost regions. Article in Journal/Newspaper permafrost PLOS PLOS ONE 17 10 e0274843 |
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English |
description |
To maintain the temperature and settlement stability of a subgrade, a combination of graded crushed rock layer and insulation layer may be applied to optimize pavement structures. This study verifies a proposed numerical model of pavement and subgrade design in permafrost regions and evaluates temperature and settlement characteristics at different particle size and thickness of graded crushed rock layer and different thickness and location of insulation layer. The results show that the temperature and settlement of the combination of graded crushed-rock layer and insulation layer decrease significantly as the particle diameter and thickness of graded crushed-rock layer increase, and vary little when the thickness of insulation layer is more than 0.15 m. The location of installation layer has significant influence on the temperature of the subbase layer, but has little influence on the temperature of the subgrade. The maximum settlement of the pavement structure and subgrade decreases when the installation layer varies from the top of the subbase layer to the bottom of the subbase layer. The optimal combination of graded crushed-rock layer and insulation layer is that the 0.15 m-thickness installation layer is at the bottom of the 0.50 m-thickness graded crushed-rock layer with the particle size of 6–8 cm. This study provides a theoretical basis for the design, construction, operation, maintenance, and safety management of airport runways in permafrost regions. |
author2 |
Mosa, Ahmed Mancy National Natural Science Foundation of China Key Technologies R&D program of Tianjin |
format |
Article in Journal/Newspaper |
author |
Liu, Xiaolan Fu, Chuanwei Li, Shunqun |
spellingShingle |
Liu, Xiaolan Fu, Chuanwei Li, Shunqun Temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions |
author_facet |
Liu, Xiaolan Fu, Chuanwei Li, Shunqun |
author_sort |
Liu, Xiaolan |
title |
Temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions |
title_short |
Temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions |
title_full |
Temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions |
title_fullStr |
Temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions |
title_full_unstemmed |
Temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions |
title_sort |
temperature and settlement characteristics of graded crushed-rock layer for runway engineering in permafrost regions |
publisher |
Public Library of Science (PLoS) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1371/journal.pone.0274843 https://dx.plos.org/10.1371/journal.pone.0274843 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
PLOS ONE volume 17, issue 10, page e0274843 ISSN 1932-6203 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1371/journal.pone.0274843 |
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PLOS ONE |
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17 |
container_issue |
10 |
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e0274843 |
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