TY - JOUR
T1 - Soil Compressibility Models for a Wide Stress Range
AU - Chong, Song-Hun
AU - Santamarina, Carlos
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was conducted by the authors while at the Georgia Institute of Technology. Support for this research was provided by the Department of Energy Savannah River Operations Office and the Goizueta Foundation. Additional support was provided by the Convergence R&D program of MSIP/NST (Convergence Research-14-2-ETRI) and the KAUST endowment.
PY - 2016/3/3
Y1 - 2016/3/3
N2 - Soil compressibility models with physically correct asymptotic void ratios are required to analyze situations that involve a wide stress range. Previously suggested models and other functions are adapted to satisfy asymptotic void ratios at low and high stress levels; all updated models involve four parameters. Compiled consolidation data for remolded and natural clays are used to test the models and to develop correlations between model parameters and index properties. Models can adequately fit soil compression data for a wide range of stresses and soil types; in particular, models that involve the power of the stress σ'β display higher flexibility to capture the brittle response of some natural soils. The use of a single continuous function avoids numerical discontinuities or the need for ad hoc procedures to determine the yield stress. The tangent stiffness-readily computed for all models-should not be mistaken for the small-strain constant-fabric stiffness. © 2016 American Society of Civil Engineers.
AB - Soil compressibility models with physically correct asymptotic void ratios are required to analyze situations that involve a wide stress range. Previously suggested models and other functions are adapted to satisfy asymptotic void ratios at low and high stress levels; all updated models involve four parameters. Compiled consolidation data for remolded and natural clays are used to test the models and to develop correlations between model parameters and index properties. Models can adequately fit soil compression data for a wide range of stresses and soil types; in particular, models that involve the power of the stress σ'β display higher flexibility to capture the brittle response of some natural soils. The use of a single continuous function avoids numerical discontinuities or the need for ad hoc procedures to determine the yield stress. The tangent stiffness-readily computed for all models-should not be mistaken for the small-strain constant-fabric stiffness. © 2016 American Society of Civil Engineers.
UR - http://hdl.handle.net/10754/621652
UR - http://ascelibrary.org/doi/10.1061/%28ASCE%29GT.1943-5606.0001482
UR - http://www.scopus.com/inward/record.url?scp=84969580081&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)GT.1943-5606.0001482
DO - 10.1061/(ASCE)GT.1943-5606.0001482
M3 - Article
SN - 1090-0241
VL - 142
SP - 06016003
JO - Journal of Geotechnical and Geoenvironmental Engineering
JF - Journal of Geotechnical and Geoenvironmental Engineering
IS - 6
ER -