Abstract
When saturated soils are subjected to an earthquake, the excess pore pressuresincrease, and, in the case of sands, this may cause liquefaction. To simulate the behaviour of saturated sands under cyclic loading, the PM4Sand constitutive model (version 3.1) formulated by Boulanger & Ziotopoulou (2017), is used. The PM4Sand model represents an improvement of the elasto-plastic, stress ratio controlled, bounding surface plasticity model formulated by Dafalias & Manzari (2004). The model can realistically reproduce the pore pressure build-up, accumulation of strain as well as triggering of liquefaction. In this paper, the effect of different relative densities on liquefaction resistance is evaluated by comparing the results of a site response analysis performed on a soil column characterized by a saturated sand layer and subjected to given earthquake signals. The analyses are performed using the finite element code PLAXIS.
| Original language | English |
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| Title of host publication | Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions |
| Subtitle of host publication | Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019 |
| Editors | Francesco Silvestri, Nicola Moraci |
| Place of Publication | Rome |
| Publisher | Associazione Geotecnica Italiana |
| Pages | 3529-3535 |
| Number of pages | 7 |
| ISBN (Print) | 978-0-367-14328-2 |
| Publication status | Published - 2019 |
| Event | 7th International Conference on Earthquake Geotechnical Engineering - Rome, Italy Duration: 17 Jun 2019 → 20 Jun 2019 http://www.7icege.com/ |
Conference
| Conference | 7th International Conference on Earthquake Geotechnical Engineering |
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| Abbreviated title | 7ICEGE |
| Country/Territory | Italy |
| City | Rome |
| Period | 17/06/19 → 20/06/19 |
| Internet address |