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