气候变化领域集成服务门户(CCPortal): Influences of freezing-thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions

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DOI	10.1038/s41598-022-09379-3
	Influences of freezing-thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions
	Xiang, Bo; Liu, Enlong; Yang, Liuxin
通讯作者	Liu, EL (通讯作者)，Sichuan Univ, Coll Water Resources & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China. ; Liu, EL (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China.
发表日期	2022
ISSN	2045-2322
卷号	12 期号:1
英文摘要	Freezing-thawing actions can affect the mechanical features of soil greatly, which is vital for the stability of soil slope in cold regions. Firstly, triaxial compression tests on sand samples under undrained conditions were performed to investigate the influences of freezing-thawing cycles, which shows that the freezing-thawing actions can weaken their strength and stiffness, and with the increasing freezing-thawing cycles, both the deviatoric stress and pore water pressure decrease gradually. Then, the double hardening constitutive model was revised to model the influences of freezing-thawing cycles in consideration of the influences of freezing-thawing actions, and the model was also validated by the test results. Finally, the proposed constitutive model was incorporated into a finite element code to numerically simulate the distribution of displacement and pore water pressure of sand slope subjected to freezing-thawing cycles, which shows that the freezing-thawing actions accelerate the dissipation of the pore water pressure and enlarge the displacement of the slope. The study here can provide a help in designing and construction of civil engineering in cold regions.
关键词	PHYSICAL-PROPERTIES CYCLES STRENGTH
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000776283800057
来源期刊	SCIENTIFIC REPORTS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254244
作者单位	[Xiang, Bo] Sichuan Prov Transport Dept Highway Planning Surv, Chengdu 610041, Sichuan, Peoples R China; [Liu, Enlong; Yang, Liuxin] Sichuan Univ, Coll Water Resources & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China; [Liu, Enlong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Xiang, Bo,Liu, Enlong,Yang, Liuxin. Influences of freezing-thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions[J]. 中国科学院西北生态环境资源研究院,2022,12(1).
APA	Xiang, Bo,Liu, Enlong,&Yang, Liuxin.(2022).Influences of freezing-thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions.SCIENTIFIC REPORTS,12(1).
MLA	Xiang, Bo,et al."Influences of freezing-thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions".SCIENTIFIC REPORTS 12.1(2022).