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DOI	10.1080/14680629.2020.1869583
	Effect of stress path on mechanical behaviours of frozen subgrade soil
	Shen, Mingde; Zhou, Zhiwei; Zhang, Shujuan
通讯作者	Zhou, ZW (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Stat Key Lab Frozen Soil Engn, Lanzhou, Peoples R China.
发表日期	2022
ISSN	1468-0629
EISSN	2164-7402
起始页码	1061
结束页码	1090
卷号	23 期号:5
英文摘要	This paper presents a systematical investigation on the mechanical behaviours of frozen subgrade soil under various stress paths. A series of triaxial compression tests under six typical linear stress paths were conducted on artificially saturated frozen samples at a temperature of -6.0 degrees C by using triaxial low-temperature apparatus (MTS-810). The effects of stress path on mechanical behaviours such as stress-strain (axial and volumetric strain) relationship, failure strength surface, initial stiffness, cohesion and friction angle of frozen sample were analysed and discussed, respectively. The experimental results show that the evolution law of volumetric strain, equivalent cohesion, friction angle and initial stiffness are significantly affected by the stress paths. The plastic deformation stages in stress-strain curves are influenced by the stress paths. The shape and size of experimental failure surface for frozen soil in deviator-mean stress space is not sensitive to the stress paths, but the mean stress at the peak point decreases with the increase of loading angle. Finally, a new nonlinear strength criterion, considering the stress path effect and 'three stage' distribution characteristics, is proposed to predict the experimental strength surface of frozen subgrade soil. This failure criterion is capable of giving a good description for the multiaxial failure characteristics of frozen soil in a wide range of loading angles.
英文关键词	Frozen soil; path-dependent; mechanical behaviours; strength criterion
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:000606941800001
来源期刊	ROAD MATERIALS AND PAVEMENT DESIGN
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/253642
作者单位	[Shen, Mingde; Zhou, Zhiwei; Zhang, Shujuan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Stat Key Lab Frozen Soil Engn, Lanzhou, Peoples R China; [Shen, Mingde] Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Shen, Mingde,Zhou, Zhiwei,Zhang, Shujuan. Effect of stress path on mechanical behaviours of frozen subgrade soil[J]. 中国科学院西北生态环境资源研究院,2022,23(5).
APA	Shen, Mingde,Zhou, Zhiwei,&Zhang, Shujuan.(2022).Effect of stress path on mechanical behaviours of frozen subgrade soil.ROAD MATERIALS AND PAVEMENT DESIGN,23(5).
MLA	Shen, Mingde,et al."Effect of stress path on mechanical behaviours of frozen subgrade soil".ROAD MATERIALS AND PAVEMENT DESIGN 23.5(2022).