THM coupled model for simulating frost heave based on a new water film pressure criterion

Wang, Z; Li, J; Teng, J; Zhang, S; Sheng, D

THM coupled model for simulating frost heave based on a new water film pressure criterion

Wang, Z Li, J Teng, J Zhang, S Sheng, D

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Publication Type:: Journal Article
Citation:: Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 2023, 45, (5), pp. 997-1007
Issue Date:: 2023-05-01

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Field	Value	Language
dc.contributor.author	Wang, Z
dc.contributor.author	Li, J
dc.contributor.author	Teng, J
dc.contributor.author	Zhang, S
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931
dc.date.accessioned	2024-05-20T02:26:28Z
dc.date.available	2024-05-20T02:26:28Z
dc.date.issued	2023-05-01
dc.identifier.citation	Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 2023, 45, (5), pp. 997-1007
dc.identifier.issn	1000-4548
dc.identifier.uri	http://hdl.handle.net/10453/179044
dc.description.abstract	The frost heave and thaw settlement are the main frost damage in cold areas, which are the complex coupling process of water, temperature and stress fields. In this study, a coupled thermal-hydraulic-mechanical model is developed based on the water film theory, in which the temperature and void ratio of soils are the input variables. The novelty of this model is that the frozen water film pressure is used as the criterion for the generation of ice lens. The driving force of water migration is newly defined, and the frost heave includes the pristine frost heave and the amount of ice segregation. The fully coupled model is numerically solved based on the Matlab and COMSOL Multiphysics, generating the results of soil temperature, moisture, stress and the layered ice lens. The simulated results are then compared with those of the laboratory freezing tests, which shows that they match quite well and verify the validity of the proposed model. The simulation indicates that temperature gradient can promote the frost heave, and the overburden pressure can attract more water to the freezing front but decrease the amount of the frost heave. In addition, both the hydraulic conductivity and the compressive modulus have positive effects on the frost heave. The proposed model provides a new approach to understand the frost heave.
dc.language	en
dc.relation.ispartof	Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering
dc.relation.isbasedon	10.11779/CJGE20220227
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Civil Engineering
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4019 Resources engineering and extractive metallurgy
dc.title	THM coupled model for simulating frost heave based on a new water film pressure criterion
dc.type	Journal Article
utslib.citation.volume	45
utslib.for	0905 Civil Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2024-05-20T02:26:27Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	45
utslib.citation.issue	5

Abstract:

The frost heave and thaw settlement are the main frost damage in cold areas, which are the complex coupling process of water, temperature and stress fields. In this study, a coupled thermal-hydraulic-mechanical model is developed based on the water film theory, in which the temperature and void ratio of soils are the input variables. The novelty of this model is that the frozen water film pressure is used as the criterion for the generation of ice lens. The driving force of water migration is newly defined, and the frost heave includes the pristine frost heave and the amount of ice segregation. The fully coupled model is numerically solved based on the Matlab and COMSOL Multiphysics, generating the results of soil temperature, moisture, stress and the layered ice lens. The simulated results are then compared with those of the laboratory freezing tests, which shows that they match quite well and verify the validity of the proposed model. The simulation indicates that temperature gradient can promote the frost heave, and the overburden pressure can attract more water to the freezing front but decrease the amount of the frost heave. In addition, both the hydraulic conductivity and the compressive modulus have positive effects on the frost heave. The proposed model provides a new approach to understand the frost heave.

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http://hdl.handle.net/10453/179044