气候变化领域集成服务门户(CCPortal): Thermo-hydro-mechanical process and damage mechanism of a cold-region canal under coupled wetting-drying and freezing-thawing cycles

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DOI	10.1007/s11440-022-01531-7
	Thermo-hydro-mechanical process and damage mechanism of a cold-region canal under coupled wetting-drying and freezing-thawing cycles
	Li, Shuangyang; Wang, Chong; Yang, Jiale; Lai, Yuanming; Jiang, Qi; Wan, Xusheng
通讯作者	Wang, C (通讯作者)，Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2020
ISSN	1861-1125
EISSN	1861-1133
英文摘要	In cold regions, periodic wetting-drying and freezing-thawing (WDFT) actions lead to frequent and heavy canal damage, weakening the water-conveyance capacities of canals. The WDFT cycle is a complicated process involving a thermo-hydro-mechanical (THM) interaction. To understand the THM process and damage mechanism of a cold-region canal (CRC), a THM model is proposed and used to simulate a centrifuge test on a CRC. The centrifuge modeling and numerical simulation results show that there are three freezing-thawing processes in the shallow ground of the CRC. Thus, a notable water-ice phase and water redistribution occur in the ground with alternating freezing-thawing process. The drastic heat and water variations of the freezing-thawing ground result in repeated frost deformations and even failure of the CRC. In addition, several possible defects in the centrifuge modeling of the CRC in a coupled WDFT environment are pointed out according to the result comparisons between the centrifuge modeling and numerical simulation. This study can improve the understanding of the THM process and damage mechanism of CRCs in complex environments and is also a reference for further study.
关键词	SOIL CONCRETE WATER
英文关键词	Cold-region canal (CRC); Damage mechanism; Thermo-hydro-mechanical (THM) process; Wetting-drying and freezing-thawing (WDFT) cycle
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Geological
WOS记录号	WOS:000777199900001
来源期刊	ACTA GEOTECHNICA
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/254980
作者单位	[Li, Shuangyang; Lai, Yuanming; Jiang, Qi] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China; [Wang, Chong] Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Gansu, Peoples R China; [Yang, Jiale] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Gansu, Peoples R China; [Wan, Xusheng] Southwest Petr Univ, Sch Civil Engn & Architecture, Chengdu 610500, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuangyang,Wang, Chong,Yang, Jiale,et al. Thermo-hydro-mechanical process and damage mechanism of a cold-region canal under coupled wetting-drying and freezing-thawing cycles[J]. 中国科学院西北生态环境资源研究院,2020.
APA	Li, Shuangyang,Wang, Chong,Yang, Jiale,Lai, Yuanming,Jiang, Qi,&Wan, Xusheng.(2020).Thermo-hydro-mechanical process and damage mechanism of a cold-region canal under coupled wetting-drying and freezing-thawing cycles.ACTA GEOTECHNICA.
MLA	Li, Shuangyang,et al."Thermo-hydro-mechanical process and damage mechanism of a cold-region canal under coupled wetting-drying and freezing-thawing cycles".ACTA GEOTECHNICA (2020).