E3S Web Conf.
Volume 195, 20204th European Conference on Unsaturated Soils (E-UNSAT 2020)
|Number of page(s)||6|
|Section||Teoretical and Numerical Models|
|Published online||16 October 2020|
Numerical modelling of the response of an unsaturated silty soil under wetting and gravitational loading processes
1 Department of Structural & Geotechnical Engineering, University of Rome La Sapienza, Via Eudossiana 18, Rome, Italy
2 School of Engineering and Mathematical Sciences, City, University of London, Northampton Square, EC1V 0HB London, UK
3 Dipartimento di Ingegneria Civile e Ingegneria Informatica, Università` degli Studi di Roma “Tor Vergata”, Via del Politecnico 1, Rome, Italy
* Corresponding author: firstname.lastname@example.org
This paper presents the results of a numerical study aiming at simulating the response of an unsaturated fine-grained soil under wetting and gravitational loading processes. This study is based on the results of some centrifuge tests carried out to assess the influence of partial saturation on the laterally loaded pile response. The hydro-mechanical behaviour of the silty soil is described using a constitutive model adapted to unsaturated conditions. The model predictions are compared with the measurements provided by LVDTs and laser transducers in the first phases of the experimental study. Besides validating the model, the numerical study aimed at investigating the influence of the after-compaction conditions on both the displacement field and the evolution of the more significant state variables during imbibition and gravitational loading processes. Finally, an additional analysis is conducted to determine the effects of the pile installation on the soil response.
© The Authors, published by EDP Sciences 2020
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