| Issue |
MATEC Web Conf.
Volume 337, 2021
PanAm-Unsat 2021: 3rd Pan-American Conference on Unsaturated Soils
|
|
|---|---|---|
| Article Number | 03005 | |
| Number of page(s) | 8 | |
| Section | Slopes, Embankments, Roads, and Foundations | |
| DOI | https://doi.org/10.1051/matecconf/202133703005 | |
| Published online | 26 April 2021 | |
Evaluation of settlement of shallow foundations laid on unsaturated soils
1 Department of Civil Engineering, Inta-Uninta University Center, 62050-100 Sobral, Brazil
2 Department of Civil Engineering, Federal Institute of Education, Science and Technology of Ceara, 62940-000 Morada Nova, Brazil
3 Department of Hydraulic and Environmental Engineering, Federal University of Ceara, 60355-636 Fortaleza, Brazil
* Corresponding author: elis_f.lopes@hotmail.com
The study presents an experimental and numerical study on an unsaturated, non-plastic and poorly graded sand, originated from Fortaleza-CE, Brazil. The numerical analyses used the Finite Element Method (FEM), were performed using the UNSTRUCT software to simulate the curve stress versus strain, considering the effect of suction on soil stiffness. Characterization and determination of the retention curve were performed through filter paper tests, which were used to determine the stress versus strain curve in a double-oedometer test. Suction was considered constant along the entire test. From the numerical analyses done with UNSTRUCT software presented satisfactory results, especially in the presence of suction profiles, that show the variation of suction along of the depth. It can be concluded that higher suction values (and soil stiffness) generate lower settlements.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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