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DOI	10.1139/cgj-2015-0569
	A strength criterion for frozen sodium sulfate saline soil
	Liao, Mengke; Lai, Yuanming; Wang, Chong
发表日期	2016
ISSN	0008-3674
EISSN	1208-6010
起始页码	1176
结束页码	1185
卷号	53 期号:7
英文摘要	Salt content has been proven to be an important influencing factor on the mechanical properties of frozen saline soils, whose strength criterion is different from that of unfrozen saline soils or frozen soils without salts. In this paper, a series of conventional triaxial tests are carried out for frozen saline soils with sodium sulfate at a temperature of -6 degrees C. A strength criterion of the frozen saline soils, including the influence of salt content, is established by using the generalized nonlinear strength theory. Based on conventional triaxial test results, a modified hydrostatic pressure expression is proposed according to the critical strength function of the modified Cam clay model in the meridian plane. The influence of salt content on the shear strength of the frozen saline soils is investigated according to their freezing temperature curves as well as the formation of salt and ice crystals. The relationship between salt content and friction angle is analyzed. The proposed strength criterion of frozen saline soil is proved to be reliable by extrusion elongation triaxial tests. This criterion can reasonably reflect the major nonlinear strength characteristics of frozen saline soils, including the influences of change in salt content, pressure melting, and ice crushing.
英文关键词	sodium sulfate; frozen saline soil; strength criterion; freezing temperature; deviatoric plane
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS关键词	CRITICAL-STATE MODEL ; CONSTITUTIVE MODEL ; FAILURE CRITERION ; CAM-CLAY ; GEOMATERIALS ; BEHAVIOR ; SANDS ; STRESS ; YIELD
WOS记录号	WOS:000379174100010
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/239487
作者单位	[Liao, Mengke; Lai, Yuanming; Wang, Chong] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Liao, Mengke] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Lai, Yuanming] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Gansu, Peoples R China; [Wang, Chong] Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Liao, Mengke,Lai, Yuanming,Wang, Chong. A strength criterion for frozen sodium sulfate saline soil[J],2016,53(7).
APA	Liao, Mengke,Lai, Yuanming,&Wang, Chong.(2016).A strength criterion for frozen sodium sulfate saline soil.CANADIAN GEOTECHNICAL JOURNAL,53(7).
MLA	Liao, Mengke,et al."A strength criterion for frozen sodium sulfate saline soil".CANADIAN GEOTECHNICAL JOURNAL 53.7(2016).