Abstract
The mode of shear in the field induced by a seismic wave is commonly assumed to be best captured by the cyclic direct simple shear (DSS) test. To investigate this assumption, this work uses an inverse analysis technique to estimate shear stress (τ)-shear strain (γ) from dynamic centrifuge tests on very dense Ottawa 40/70 sand (relative density, Dr ∼ 95%). This back-calculated stress-strain response is compared to τ-γ response: (1) measured in drained and undrained monotonic and cyclic DSS tests on dry and saturated medium dense to very dense (Dr ∼ 51 to 95%) sands; and (2) inferred from existing shear modulus reduction correlations available in the literature. The results indicate that the DSS response is softer to shear strains up to about 0.4%, while existing correlations based on resonant column-torsional shear tests capture the back-calculated τ-γ response from the centrifuge tests.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 122-131 |
| Number of pages | 10 |
| Journal | Geotechnical Special Publication |
| Volume | 2018-June |
| Issue number | GSP 293 |
| DOIs | |
| State | Published - 2018 |
| Event | 5th Geotechnical Earthquake Engineering and Soil Dynamics Conference: Slope Stability and Landslides, Laboratory Testing, and In Situ Testing, GEESDV 2018 - Austin, United States Duration: Jun 10 2018 → Jun 13 2018 |
ASJC Scopus subject areas
- Civil and Structural Engineering
- Architecture
- Building and Construction
- Geotechnical Engineering and Engineering Geology