Geo-Congress 2020
DEM Simulations of the Seismic Response of Granular Slopes
Publication: Geo-Congress 2020: Geotechnical Earthquake Engineering and Special Topics (GSP 318)
ABSTRACT
In this study, a three-dimensional microscale framework utilizing the discrete element method (DEM) is used to examine the seismic response of dry granular slopes under different conditions of ground motions. The presented model inherently accounts for soil nonlinearity and damping in response to shear deformations. The essential characteristics of wave propagation including motion amplification and resonance were observed from the computational results. The impact of amplitude and frequency of input motion on the response of the slope was examined. Shaking-induced softening of the soil composing the slope may shift its natural frequency to values very close to the frequency of the dynamic motion, leading to a near-resonance condition in which the slope experiences severe deformation.
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Information & Authors
Information
Published In
Geo-Congress 2020: Geotechnical Earthquake Engineering and Special Topics (GSP 318)
Pages: 324 - 333
Editors: James P. Hambleton, Ph.D., Northwestern University, Roman Makhnenko, Ph.D., University of Illinois at Urbana-Champaign, and Aaron S. Budge, Ph.D., Minnesota State University, Mankato
ISBN (Online): 978-0-7844-8281-0
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Feb 21, 2020
ASCE Technical Topics:
- Continuum mechanics
- Deformation (mechanics)
- Discrete element method
- Earthquake engineering
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Geomechanics
- Geotechnical engineering
- Geotechnical investigation
- Granular materials
- Ground motion
- Materials engineering
- Methodology (by type)
- Models (by type)
- Numerical methods
- Seismic effects
- Seismic tests
- Slopes
- Soil deformation
- Solid mechanics
- Structural mechanics
- Tests (by type)
- Three-dimensional models
Authors
Metrics & Citations
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