TY - GEN
T1 - Impact of Hysteretic Damping on Nonlinear Dynamic Soil-Underground Structure-Structure Interaction Analyses
AU - Basarah, Yuamar I.
AU - Numanoglu, Ozgun A.
AU - Hashash, Youssef M.A.
AU - Dashti, Shideh
N1 - Funding Information:
This work was supported in part by the National Science Foundation (NSF) under Grant No. 1134968. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the NSF. The first author would also like to show his gratitude to LPDP (Indonesia Endowment Fund for Education), which has provided financial support for his graduate study.
Publisher Copyright:
© 2019 American Society of Civil Engineers.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - Hysteresis models following the extended Masing rules are commonly used to represent soil's un/reloading behavior. However, at moderate to large strain levels of shaking, models based on the extended Masing rules overestimate hysteretic damping measured in laboratory tests. This study evaluates the impact of hysteretic damping at moderate to large strain levels on simulation of dynamic soil-underground structure-superstructure interaction. The simulations use a recently developed, three-dimensional, distributed element plasticity soil model (I-soil), which allows flexible control over hysteretic behavior and can model both extended Masing and user-defined non-Masing type un/reloading. Three-dimensional finite element simulations are compared with results obtained from centrifuge experiments on medium-dense, dry sand in terms of acceleration, surface settlement, and wall deformations. Non-Masing unloading/reloading rules provide a better estimation of spectral accelerations at intermediate period ranges and surface settlements. Both cases computed similar surface spectral response at short and long periods as well as wall deformations.
AB - Hysteresis models following the extended Masing rules are commonly used to represent soil's un/reloading behavior. However, at moderate to large strain levels of shaking, models based on the extended Masing rules overestimate hysteretic damping measured in laboratory tests. This study evaluates the impact of hysteretic damping at moderate to large strain levels on simulation of dynamic soil-underground structure-superstructure interaction. The simulations use a recently developed, three-dimensional, distributed element plasticity soil model (I-soil), which allows flexible control over hysteretic behavior and can model both extended Masing and user-defined non-Masing type un/reloading. Three-dimensional finite element simulations are compared with results obtained from centrifuge experiments on medium-dense, dry sand in terms of acceleration, surface settlement, and wall deformations. Non-Masing unloading/reloading rules provide a better estimation of spectral accelerations at intermediate period ranges and surface settlements. Both cases computed similar surface spectral response at short and long periods as well as wall deformations.
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U2 - 10.1061/9780784482100.022
DO - 10.1061/9780784482100.022
M3 - Conference contribution
AN - SCOPUS:85063463210
SN - 9780784482100
T3 - Geotechnical Special Publication
SP - 208
EP - 218
BT - Geotechnical Special Publication
A2 - Meehan, Christopher L.
A2 - Kumar, Sanjeev
A2 - Pando, Miguel A.
A2 - Coe, Joseph T.
PB - American Society of Civil Engineers
T2 - 8th International Conference on Case Histories in Geotechnical Engineering: Earthquake Engineering and Soil Dynamics, Geo-Congress 2019
Y2 - 24 March 2019 through 27 March 2019
ER -