Abstract
Earthquake-induced build-up of pore water pressure may be responsible for reduced soil capacity, while the accumulation of shear strains may lead to a violation of serviceability limits. Predicting accurately the soil cyclic behaviour in relation to seismic numerical simulations is still a challenging topic in many respects. Efforts are required to improve several technical aspects, including the development of a reliable and complete constitutive model. This paper reports recent developments after the work of Liu et al. (2018a), and particularly about the performance of a new SANISAND formulation incorporating the memory surface concept (Corti et al., 2016). The performance of the model in terms of strain accumulation and pore pressure build-up is validated against high-quality laboratory test results. A modified dilatancy relationship is given to reproduce within the proposed framework proper cyclic mobility response. The effects of preliminary drained cyclic preloading on soil liquefaction resistance are also studied.
| Original language | English |
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| Title of host publication | Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019 |
| Editors | Francesco Silvestri, Nicola Moraci |
| Publisher | CRC Press/Balkema |
| Pages | 3633-3640 |
| Number of pages | 8 |
| ISBN (Print) | 9780367143282 |
| State | Published - 2019 |
| Event | 7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019 - Rome, Italy Duration: 17 Jan 2019 → 20 Jan 2019 |
Publication series
| Name | Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019 |
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Conference
| Conference | 7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019 |
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| Country/Territory | Italy |
| City | Rome |
| Period | 17/01/19 → 20/01/19 |
Bibliographical note
Publisher Copyright:© 2019 Associazione Geotecnica Italiana, Rome, Italy.
Keywords
- Earthquakes
- Pore pressure
- Soil liquefaction
- Soils
- Strain
- Surface hardening
- Cyclic behaviour
- Cyclic preloading
- Liquefaction resistance
- Pore-water pressures
- Preloading effects
- Pressure build up
- Strain accumulations
- Technical aspects
- Geotechnical engineering