气候变化领域集成服务门户(CCPortal): Mechanical behavior and constitutive relation of the interface between warm frozen silt and cemented soil

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DOI	10.1016/j.trgeo.2021.100624
	Mechanical behavior and constitutive relation of the interface between warm frozen silt and cemented soil
	Zhang, Qi; Zhang, Jianming; Wang, Honglei; Zhang, Tianyuan
通讯作者	Zhang, JM (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	2021
ISSN	2214-3912
卷号	30
英文摘要	To study the shear mechanical properties and deformation mechanism of the interface between cemented soil and warm frozen soil, the key parameters are provided for the design and evaluation of cemented soil structure in warm frozen soil ground. In this study, a series of negative temperature direct shear tests of the cast-in-place cemented soil-frozen soil interface were conducted under the influence of different factors. The binary medium model was used to investigate the mechanical stress and deformational mechanisms of the interface, and the damage rate and stress sharing rate functions were introduced. Assuming that the strength of each element of the interface obeyed the Weibull probability distribution, the constitutive equation of the warm frozen soil-cemented soil interface was established. The results showed that the stress-displacement curve of the interface was a strain-softening type, and the entire deformation process of the interface was divided into four stages: the linear elastic, elastic-plastic, softening, and residual stability stages. The constitutive model based on the binary medium theory revealed the micro stress-strain mechanism of the interface and better described the entire stress-displacement process of the interface and the strain softening phenomenon, which can provide a basis for the numerical simulation and theoretical calculation of the structure in the frozen soil ground.
关键词	ADFREEZE STRENGTH LAYER
英文关键词	Warm frozen soil-cemented soil interface; Direct shear test; Binary medium theory; Constitutive model; Weibull probability distribution
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Civil ; Engineering, Geological
WOS记录号	WOS:000684562100003
来源期刊	TRANSPORTATION GEOTECHNICS
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/253856
作者单位	[Zhang, Qi; Zhang, Jianming; Wang, Honglei; Zhang, Tianyuan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Zhang, Qi; Wang, Honglei; Zhang, Tianyuan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qi,Zhang, Jianming,Wang, Honglei,et al. Mechanical behavior and constitutive relation of the interface between warm frozen silt and cemented soil[J]. 中国科学院西北生态环境资源研究院,2021,30.
APA	Zhang, Qi,Zhang, Jianming,Wang, Honglei,&Zhang, Tianyuan.(2021).Mechanical behavior and constitutive relation of the interface between warm frozen silt and cemented soil.TRANSPORTATION GEOTECHNICS,30.
MLA	Zhang, Qi,et al."Mechanical behavior and constitutive relation of the interface between warm frozen silt and cemented soil".TRANSPORTATION GEOTECHNICS 30(2021).