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DOI10.1080/14680629.2020.1869583
Effect of stress path on mechanical behaviours of frozen subgrade soil
Shen, Mingde; Zhou, Zhiwei; Zhang, Shujuan
Corresponding AuthorZhou, ZW (通讯作者),Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Stat Key Lab Frozen Soil Engn, Lanzhou, Peoples R China.
Date Issued2022
ISSN1468-0629
EISSN2164-7402
startpage1061
endpage1090
Volume23Issue:5
Other AbstractThis 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.
enkeywordsFrozen soil; path-dependent; mechanical behaviours; strength criterion
Language英语
WOS Research AreaConstruction & Building Technology ; Engineering ; Materials Science
WOS SubjectConstruction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS IDWOS:000606941800001
journalROAD MATERIALS AND PAVEMENT DESIGN
Source Publication中国科学院西北生态环境资源研究院
Document Type期刊论文
Identifierhttp://gcip.llas.ac.cn/handle/2XKMVOVA/253642
Affiliation[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
Recommended Citation
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).
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