A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In Situ Lateral Stress Coefficient (K0) from Shear Wave Velocity Measurements in Soils
AbstractThe at-rest lateral stress coefficient (K0) is an important soil parameter in geotechnical design problems and yet it is quite elusive in our ability to assess its value, either by laboratory or in situ tests. In this study, an innovative geophysics approach toward the evaluation of the in situ K0 profile with depth is obtained by using small-strain stiffness anisotropy ratio (G0,HH/G0,VH) in soils. The newly proposed K0 equation is derived from a database compiled from 12 test sites which have direct K0 measurements, as procured from field tests, either self-boring pressuremeters (SBP) or total stress cells (TSC), and/or laboratory triaxial tests, instrumented consolidometers, and/or suction measurements. The data show a strong relationship between the overconsolidation difference (OCD=σp′−σvo′) and stiffness anisotropy ratio, thus enabling a K0 assessment in clays, silts, and sands.
In Situ Lateral Stress Coefficient (K0) from Shear Wave Velocity Measurements in Soils
AbstractThe at-rest lateral stress coefficient (K0) is an important soil parameter in geotechnical design problems and yet it is quite elusive in our ability to assess its value, either by laboratory or in situ tests. In this study, an innovative geophysics approach toward the evaluation of the in situ K0 profile with depth is obtained by using small-strain stiffness anisotropy ratio (G0,HH/G0,VH) in soils. The newly proposed K0 equation is derived from a database compiled from 12 test sites which have direct K0 measurements, as procured from field tests, either self-boring pressuremeters (SBP) or total stress cells (TSC), and/or laboratory triaxial tests, instrumented consolidometers, and/or suction measurements. The data show a strong relationship between the overconsolidation difference (OCD=σp′−σvo′) and stiffness anisotropy ratio, thus enabling a K0 assessment in clays, silts, and sands.
In Situ Lateral Stress Coefficient (K0) from Shear Wave Velocity Measurements in Soils
Ku, Taeseo (author) / Mayne, Paul W
2015
Article (Journal)
English
BKL:
56.20
Ingenieurgeologie, Bodenmechanik
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