Model Uncertainty in Below-Slope Stress Conditions: Experimental and Numerical Investigation
Publication: Geo-Risk 2023
ABSTRACT
Significant advances in numerical techniques to assess static and dynamic liquefaction susceptibility of slopes have occurred over the past few decades. However, an important and often-overlooked uncertainty in such work is the in situ stress state below slopes, which can have a significant effect on the outcome of such analyses. To assess the performance of some common modelling techniques of slopes, the stress states that develop in plane strain hollow cylinder torsional shear tests of a sandy silt gold tailings are compared to model predictions. From this comparison, the uncertainty in such predictions and potential means to refine model calibrations incorporating plane strain test techniques in the future are outlined. Methods to iteratively adjust elasticity and plastic hardening parameters in a critical state model to better reproduce the plane strain calibration test are outlined.
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Information & Authors
Information
Published In
Geo-Risk 2023
Pages: 238 - 247
History
Published online: Jul 20, 2023
ASCE Technical Topics:
- Analysis (by type)
- Calibration
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Geomechanics
- Geotechnical engineering
- Laboratory tests
- Material mechanics
- Materials engineering
- Measurement (by type)
- Methodology (by type)
- Motion (dynamics)
- Numerical analysis
- Numerical methods
- Plane strain
- Shear tests
- Slopes
- Solid mechanics
- Strain
- Stress (by type)
- Stress analysis
- Structural analysis
- Structural engineering
- Tests (by type)
- Uncertainty principles
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