A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Impact of Hysteretic Damping on Nonlinear Dynamic Soil-Underground Structure-Structure Interaction Analyses
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.
Impact of Hysteretic Damping on Nonlinear Dynamic Soil-Underground Structure-Structure Interaction Analyses
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.
Impact of Hysteretic Damping on Nonlinear Dynamic Soil-Underground Structure-Structure Interaction Analyses
Basarah, Yuamar I. (author) / Numanoglu, Ozgun A. (author) / Hashash, Youssef M. A. (author) / Dashti, Shideh (author)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 208-218
2019-03-21
Conference paper
Electronic Resource
English
| British Library Conference Proceedings | 2019
Nonlinear Dynamic Soil-Structure Interaction Analyses of Immersed George Massey Tunnel
| British Library Conference Proceedings | 2006
| British Library Conference Proceedings | 1995