气候变化领域集成服务门户(CCPortal): A dynamic strength criterion for frozen sulfate saline silty clay under cyclic loading

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DOI	10.1016/j.coldregions.2020.103026
	A dynamic strength criterion for frozen sulfate saline silty clay under cyclic loading
	Zhao, Yanhu; Lai, Yuanming; Zhang, Jing; Liao, Mengke
发表日期	2020
ISSN	0165-232X
EISSN	1872-7441
卷号	173
英文摘要	The strength properties of frozen saline soils under cyclic loading are more complex than those of unfrozen soils and frozen salt-free soils due to the existence of salt crystals in soil matrix. In this paper, a serious of tri-axial cyclic loading tests are conducted for frozen sulfate saline silty clay (FSSSC) with different Na2SO4 contents under different confining pressures and loading dynamic stress ratios at the temperature of -6 degrees C, respectively. The experimental results illustrate that the dynamic strength of FSSSC decreases with the increase of axial strain. The critical state line of FSSSC under cyclic loading is moving constantly. The dynamic critical state lines of FSSSC with different salt contents are different under same axial strains. The dynamic friction angle of FSSSC is related to salt content, loading dynamic stress ratio and confining pressure. Based on the experimental results, a dynamic strength criterion for FSSSC under cyclic loading is proposed, and the method of determining dynamic strength parameters is given. This strength criterion not only can reflect the effect of loading dynamic stress ratio and salt content on dynamic strength, but also can describe the influence of high confining pressure on dynamic strength.
英文关键词	Frozen saline soils; Dynamic loading; Dynamic strength criterion; Dynamic friction angle; High confining pressures
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	MOHR-COULOMB CRITERION ; CONSTITUTIVE MODEL ; FAILURE CRITERIA ; BEHAVIOR ; SANDS ; SOILS
WOS记录号	WOS:000535674500018
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/239574
作者单位	[Zhao, Yanhu; Lai, Yuanming; Zhang, Jing] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Zhao, Yanhu; Lai, Yuanming; Zhang, Jing] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Liao, Mengke] State Grid Xinjiang Econ Res Inst, Urumqi 830001, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yanhu,Lai, Yuanming,Zhang, Jing,et al. A dynamic strength criterion for frozen sulfate saline silty clay under cyclic loading[J]. 中国科学院西北生态环境资源研究院,2020,173.
APA	Zhao, Yanhu,Lai, Yuanming,Zhang, Jing,&Liao, Mengke.(2020).A dynamic strength criterion for frozen sulfate saline silty clay under cyclic loading.COLD REGIONS SCIENCE AND TECHNOLOGY,173.
MLA	Zhao, Yanhu,et al."A dynamic strength criterion for frozen sulfate saline silty clay under cyclic loading".COLD REGIONS SCIENCE AND TECHNOLOGY 173(2020).