气候变化领域集成服务门户(CCPortal): Study on the multi-field-coupling model of saline frozen soil considering ice and salt crystallization

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DOI	10.1016/j.compgeo.2024.106209
	Study on the multi-field-coupling model of saline frozen soil considering ice and salt crystallization
	Xiao, Zean; Li, Kangliang; Duan, Jieyun; Zhang, Shaofei
发表日期	2024
ISSN	0266-352X
EISSN	1873-7633
起始页码	169
卷号	169
英文摘要	Sulfate soil, a typical saline soil in Qinghai Tibet Plateau, has the engineering characteristics of salt expansion and frost heave, which are seriously threatening the operation and safety of engineering buildings. Based on the phase diagram theory, we determined the functions of ice and hydrated salt in pore solution under different concentrations and temperatures. Then we further established a multi-field-coupling model of saline frozen soil considering ice and salt crystallization to simulate the water/salt migration process and the deformation law of saline soil in the cooling process. Compared with the results of unidirectional freezing test, we verified the reliability of the model, indicating that the model well reflected the development of water, temperature, salinity, and deformation of saline soil. Finally, we discussed the variation of each component in sodium sulfate soil, the change process of soil hydraulic conductivity, and the deformation mechanism according to the proposed numerical model. The results provide a theoretical reference for the engineering application of a multi-fieldcoupling model of saline soil in cold regions.
英文关键词	Saline soil; Salt crystallization; Multi-field coupling; Deformation mechanism; Salt expansion; Frost heave
语种	英语
WOS研究方向	Computer Science ; Engineering ; Geology
WOS类目	Computer Science, Interdisciplinary Applications ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:001208776600001
来源期刊	COMPUTERS AND GEOTECHNICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293012
作者单位	Taiyuan University of Technology
推荐引用方式 GB/T 7714	Xiao, Zean,Li, Kangliang,Duan, Jieyun,et al. Study on the multi-field-coupling model of saline frozen soil considering ice and salt crystallization[J],2024,169.
APA	Xiao, Zean,Li, Kangliang,Duan, Jieyun,&Zhang, Shaofei.(2024).Study on the multi-field-coupling model of saline frozen soil considering ice and salt crystallization.COMPUTERS AND GEOTECHNICS,169.
MLA	Xiao, Zean,et al."Study on the multi-field-coupling model of saline frozen soil considering ice and salt crystallization".COMPUTERS AND GEOTECHNICS 169(2024).