Unified Model for Small-Strain Shear Modulus of Variably Saturated Soil

AbstractThe small-strain shear modulus G0 is a property fundamental to the deformation response of soils to dynamic loading. It depends on soil mineralogy, particle characteristics, void ratio, effective stress, and the degree of saturation. Some theories have been established to predict G0 of soils...

Full description

Saved in:
Bibliographic Details
Published in:Journal of geotechnical and geoenvironmental engineering 2016-09, Vol.142 (9)
Main Authors: Dong, Yi, Lu, Ning, McCartney, John S
Format: Article
Language:English
Subjects:
Technical Papers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:AbstractThe small-strain shear modulus G0 is a property fundamental to the deformation response of soils to dynamic loading. It depends on soil mineralogy, particle characteristics, void ratio, effective stress, and the degree of saturation. Some theories have been established to predict G0 of soils under variably saturated conditions. Accordingly, a new unified model was developed for G0 of different soils under variably saturated conditions. The model is based on two conceptual mechanisms: material hardening/softening, which is considered using the degree of saturation as a variable, and interparticle contact forces carried by the soil skeleton, which is considered using the effective stress as a variable. By utilizing suction stress theory, it is demonstrated that G0 can be correlated to the parameters of the soil-water retention curve. Results from the literature for 22 soils along with new results for 7 soils were used to validate the model under variably saturated conditions and a range of total stresses.
ISSN:1090-0241
1943-5606
DOI:10.1061/(ASCE)GT.1943-5606.0001506