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DOI	10.1139/cgj-2016-0152
	Fatigue and damage properties of frozen silty sand samples subjected to cyclic triaxial loading
	Liu, Enlong; Lai, Yuanming; Liao, Mengke; Liu, Xingyan; Hou, Feng
发表日期	2016
ISSN	0008-3674
EISSN	1208-6010
起始页码	1939
结束页码	1951
卷号	53 期号:12
英文摘要	Cyclic triaxial tests were conducted to explore the influences of dynamic axial loading on the dynamic features and fatigue of frozen silty sand, using an MTS-810 apparatus from Material Testing Systems (MTS). The temperature was -15 degrees(C), and the cyclic axial loads with different amplitudes at 1.0 Hz were applied under confining pressures of 0.6, 1.4, and 6.0 MPa. The cyclic triaxial test results demonstrate that the residual axial strain of the frozen silty sand samples increases gradually during the initial cycles and then increases with increasing number of cycles at a constant speed until failure. The residual volumetric strain contracts during the initial loading cycles and then dilates until failure. Both the residual strain method and the residual volumetric strain method proposed here can be used to describe the degradation process in frozen silty sand samples subjected to cyclic loading. The dynamic axial stiffness of a frozen sample decreases rapidly in the initial cycles and then approaches a stable value with increasing cycle number. The initial damage increases when the stress ratio increases; the larger the stress ratio, the smaller the number of cycles at failure.
英文关键词	fatigue properties; cyclic triaxial tests; frozen silty sand; dynamic mechanical features
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS关键词	STIFFNESS ; EVOLUTION ; TESTS ; CLAY
WOS记录号	WOS:000389313700005
来源期刊	CANADIAN GEOTECHNICAL JOURNAL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239483
作者单位	[Liu, Enlong; Lai, Yuanming; Liao, Mengke; Liu, Xingyan] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Gansu, Peoples R China; [Liu, Enlong; Hou, Feng] Sichuan Univ, State Key Lab Hydraul & Nat River Engn, Coll Water Resource & Hydropower, Chengdu 610065, Peoples R China
推荐引用方式 GB/T 7714	Liu, Enlong,Lai, Yuanming,Liao, Mengke,et al. Fatigue and damage properties of frozen silty sand samples subjected to cyclic triaxial loading[J],2016,53(12).
APA	Liu, Enlong,Lai, Yuanming,Liao, Mengke,Liu, Xingyan,&Hou, Feng.(2016).Fatigue and damage properties of frozen silty sand samples subjected to cyclic triaxial loading.CANADIAN GEOTECHNICAL JOURNAL,53(12).
MLA	Liu, Enlong,et al."Fatigue and damage properties of frozen silty sand samples subjected to cyclic triaxial loading".CANADIAN GEOTECHNICAL JOURNAL 53.12(2016).