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 …

Seismic behavior of pile-supported systems in unsaturated sand

M Ghayoomi, S Ghadirianniari, A Khosravi… - Soil Dynamics and …, 2018 - Elsevier
The seismic behavior of pile-supported systems has been an active area of research over
the past decades. However, focus has mostly been on evaluating the seismic response of …

Seismic fragility of approach backfill differential settlement for statewide bridges in California

Y Shao, Y Xie, CJ Roblee, J Zhang - Soil Dynamics and Earthquake …, 2022 - Elsevier
This study develops the first-of-its-kind seismic fragility models for estimation of approach
backfill differential settlement for statewide bridges in California. Seismic compression …

Simplified equivalent linear and nonlinear site response analysis of partially saturated soil layers

M Mirshekari, M Ghayoomi - IFCEE 2015, 2015 - ascelibrary.org
Dynamic properties of soils including small-strain shear modulus (Gmax), shear modulus
reduction function (G/Gmax), and damping (D) are affected by changes in the degree of …

Procedure to estimate the seismic settlement of partially saturated soils

M Ghayoomi, JS McCartney - Indian Geotechnical Journal, 2016 - Springer
The performance of near-surface geosystems during earthquake shaking depends on the
free-field response of the soil layer and soil–structure interaction mechanisms. This paper …

[PDF][PDF] Simulating seismic response of unsaturated sand layers inside a geotechnical centrifuge

M Mirshekari, M Ghayoomi - Proc., 19th Int. Conf. on Soil …, 2017 - researchgate.net
Dynamic properties of partially saturated soils may differ from those in dry condition, which
may lead to different seismic site response. A set of degree of saturation-controlled …

Suction-controlled cyclic triaxial system for measurement of dynamic properties of unsaturated soils

G Suprunenko, M Ghayoomi - From Fundamentals to …, 2015 - ebooks.iospress.nl
Dynamic properties of soils including small-strain and strain-dependent shear modulus and
damping are influenced by the degree of saturation and inter-particle suction forces. This …

Sensitivity of seismic site response to fluctuations in water levels

M Mirshekari, M Ghayoomi… - … for Protection and …, 2019 - taylorfrancis.com
Differences in the degree of saturation in soil layers, from the time the soil properties were
measured to the time an earthquake occurs, can influence seismic site response …

[PDF][PDF] Effect of Dynamic Earth Vibration on the Behavior of Laterally Loaded Single Pile Embedded within Unsaturated Soil

MH Abood, MR Mahmood, NM Salim - Engineering and Technology Journal, 2021 - iasj.net
In seismic activity regions, the analysis and design of pile that supported structures require
an accurate prediction of the pile response and the load resistance to lateral shaking caused …