Scaling Shear Modulus from Small to Finite Strain for Unsaturated Soils

doi:10.1061/(ASCE)GT.1943-5606.0001819

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Scaling Shear Modulus from Small to Finite Strain for Unsaturated Soils
	Dong, Yi 1,2; Lu, Ning 2; McCartney, John S.3
刊名	JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
	2018
卷号	144 期号:2 页码:-
关键词	Small strain shear modulus Shear modulus reduction Bender elements Soil water retention Suction stress Unsaturated soils
ISSN号	1090-0241
DOI	10.1061/(ASCE)GT.1943-5606.0001819
英文摘要	The stress-dependent curve of shear modulus degradation with increasing shear strain amplitude is a fundamental mechanical property of soils. Although it is well known that the degree of saturation has an important impact on the small strain shear modulus of unsaturated soils, its role on the shear modulus evolution with strain has not been thoroughly investigated. A testing program has revealed strong correlations between two key parameters of the shear modulus degradation curve, the reference strain and the coefficient of curvature, and parameters of the soil water retention curve (SWRC). An SWRC model capable of distinguishing between soil water in the capillary and adsorption regimes was used to correlate the reference strain to the maximum adsorption water content and pore size distribution of a soil, and to correlate the curvature coefficient to the maximum adsorption water content. A hyperbolic equation for the shear modulus reduction curve using these correlations shows good performance in predicting the shear modulus under unsaturated small or finite strain conditions. The new model was validated using the shear modulus reduction curve of independent data sets measured at different shear strains. (C) 2017 American Society of Civil Engineers.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000418187700011
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4205]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Colorado Sch Mines, Dept Civil & Environm Engn; 3.Univ Calif San Diego, Dept Struct Engn
推荐引用方式 GB/T 7714	Dong, Yi,Lu, Ning,McCartney, John S.. Scaling Shear Modulus from Small to Finite Strain for Unsaturated Soils[J]. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,2018,144(2):-.
APA	Dong, Yi,Lu, Ning,&McCartney, John S..(2018).Scaling Shear Modulus from Small to Finite Strain for Unsaturated Soils.JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,144(2),-.
MLA	Dong, Yi,et al."Scaling Shear Modulus from Small to Finite Strain for Unsaturated Soils".JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING 144.2(2018):-.