气候变化领域集成服务门户(CCPortal): An elasto-plastic constitutive model for frozen soil subjected to cyclic loading

CCPortal

DOI	10.1016/j.coldregions.2021.103341
	An elasto-plastic constitutive model for frozen soil subjected to cyclic loading
	Wang, Dan; Liu, Enlong; Zhang, De; Yue, Pan; Wang, Pan; Kang, Jian; Yu, Qihao
通讯作者	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	2021
ISSN	0165-232X
EISSN	1872-7441
卷号	189
英文摘要	Upon employing the theoretical frame of breakage mechanics for geological materials and homogenization, a new elasto-plastic constitutive model is proposed to investigate the dynamic mechanical behaviors and volumetric strain of frozen soil under cyclic loading. In this model, using a mesoscopic method to formulate the breakage of frozen soil by idealizing it as a binary medium, assuming respectively the unbroken state as bonded element and the damage state as frictional element. During the loading process, the evolution of the nonuniform deformation and ice cementation breakage is described by the local strain concentration coefficient and breakage ratio, respectively. The dynamic triaxial compression test data for different confining pressures, coarse particle contents, and dynamic deviatoric stress amplitudes are utilized to confirm the suitability of the new elasto-plastic constitutive model. In the results, the model presented the stress-strain curves and volumetric strain curves of frozen soil under cyclic loading which captured the basic dynamic characteristics, such as nonlinear variation, hysteresis behaviors, and plastic strain accumulation behaviors. Herein, the extensive experimental validation shows the applicability of the proposed model.
关键词	DAMPING RATIO CLAY BEHAVIOR
英文关键词	Frozen soil; Breakage mechanics for geological materials; Homogenization theory; Binary-medium constitutive model; Dynamic behavior
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS记录号	WOS:000732744500002
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
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/254116
作者单位	[Wang, Dan; Liu, Enlong; Zhang, De; Wang, Pan; Kang, Jian; Yu, Qihao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Wang, Dan; Zhang, De; Wang, Pan; Kang, Jian] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Liu, Enlong] Sichuan Univ, Coll Water Resources & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China; [Yue, Pan] Yalong River Hydropower Dev Co Ltd, Chengdu 610051, Peoples R China
推荐引用方式 GB/T 7714	Wang, Dan,Liu, Enlong,Zhang, De,et al. An elasto-plastic constitutive model for frozen soil subjected to cyclic loading[J]. 中国科学院西北生态环境资源研究院,2021,189.
APA	Wang, Dan.,Liu, Enlong.,Zhang, De.,Yue, Pan.,Wang, Pan.,...&Yu, Qihao.(2021).An elasto-plastic constitutive model for frozen soil subjected to cyclic loading.COLD REGIONS SCIENCE AND TECHNOLOGY,189.
MLA	Wang, Dan,et al."An elasto-plastic constitutive model for frozen soil subjected to cyclic loading".COLD REGIONS SCIENCE AND TECHNOLOGY 189(2021).