Centrifuge tests to assess seismic site response of partially saturated sand layers

M Mirshekari, M Ghayoomi - Soil Dynamics and Earthquake Engineering, 2017 - Elsevier
Seismic response of unsaturated soil layers may differ from that of saturated or dry soil
deposits. A set of centrifuge experiments was conducted to study the influence of partial …

Cyclic triaxial test to measure strain-dependent shear modulus of unsaturated sand

M Ghayoomi, G Suprunenko… - International Journal of …, 2017 - ascelibrary.org
Dynamic shear modulus plays an important role in the seismic assessment of geotechnical
systems. Changes in the degree of water saturation influence dynamic soil properties …

[PDF][PDF] State of the Art Report. Advances in Unsaturated Soil Mechanics: Constitutive modelling, experimental investigation, and field instrumentation

N Khalili, E Romero, FA Marinho - … of the 20th ICSMGE-State of the Art …, 2022 - unsw.edu.au
This state-of-the-art covers advances in the constitutive modelling, experimental
investigation and field measurement of suction for unsaturated soils. It consists of three …

Effect of specimen preparation techniques on dynamic properties of unsaturated fine-grained soil at high suctions

CWW Ng, S Baghbanrezvan, H Sadeghi… - Canadian …, 2017 - cdnsciencepub.com
The seismic response of soil depends on proper evaluation and use of soil dynamic
properties, including shear modulus and damping ratio at various strain levels. Despite …

Effects of groundwater level on seismic response of soil–foundation systems

A Borghei, M Ghayoomi, M Turner - Journal of Geotechnical and …, 2020 - ascelibrary.org
A set of dynamic centrifuge experiments was performed to assess the effect of the depth of
the groundwater table on the seismic site response and kinematic interaction of a foundation …

Performance of rocking foundations on unsaturated soil layers with variable groundwater levels

MM Turner, M Ghayoomi, K Ueda, R Uzuoka - Géotechnique, 2022 - icevirtuallibrary.com
An emerging foundation design scheme, termed a rocking foundation, has the potential to
limit loads transmitted to the superstructure, with the potential trade-off of increased …

Cyclic modeling of unsaturated sands using a pore‐scale hydromechanical approach

E Hosseinkhani, G Habibagahi… - International Journal for …, 2023 - Wiley Online Library
Determining proper strain‐dependent shear modulus and damping ratio for soils is of utmost
importance when investigating their response to cyclic loads. Experimental studies on the …

Combination of water head control and axis translation techniques in new unsaturated cyclic simple shear tests

A Ahmadinezhad, F Jafarzadeh, H Sadeghi - Soil Dynamics and …, 2019 - Elsevier
A cyclic simple shear device was modified for testing coarse-grained soils at unsaturated
conditions. A combined methodology of controlling suction for the practical range of coarse …

A comparison of shear modulus of unsaturated sand in triaxial and simple shear tests under different strains and suctions

D Shirkavand, K Fakharian - Engineering Geology, 2023 - Elsevier
The shear modulus (G) in sands changes when subjected to variations in the degree of
saturation. The matric suction in unsaturated sands increase the effective stress and …

Measurement of Dynamic and Static Properties of Residual Soil Using a Modified Cyclic Triaxial Apparatus

Z Cheng, EC Leong - Geotechnical Testing Journal, 2023 - asmedigitalcollection.asme.org
A cyclic triaxial apparatus was modified to determine the dynamic and static properties of a
residual soil at different degrees of saturation. The modification includes addition of bender …