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Scaling Shear Modulus from Small to Finite Strain for Unsaturated Soils
Dong, Yi1,2; Lu, Ning2; McCartney, John S.3
2018
Source PublicationJOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
ISSN1090-0241
Volume144Issue:2Pages:-
AbstractThe 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.
KeywordSmall strain shear modulus Shear modulus reduction Bender elements Soil water retention Suction stress Unsaturated soils
DOI10.1061/(ASCE)GT.1943-5606.0001819
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000418187700011
PublisherASCE-AMER SOC CIVIL ENGINEERS
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://119.78.100.198/handle/2S6PX9GI/4205
Collection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
Affiliation1.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
First Author AffilicationInstitute of Rock and Soil Mechanics, chinese Academy of sciences
Recommended Citation
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):-.
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