Back to Search
Start Over
A Constitutive Model of Sandy Gravel Soil under Large-Sized Loading/Unloading Triaxial Tests
- Source :
- Advances in Civil Engineering, Vol 2021 (2021)
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- Based on large-scale triaxial tests of sandy gravel materials, the strength and deformation characteristics under loading/unloading conditions are analyzed. At the same time, the applicability of the hyperbolic constitutive model to sandy gravel is studied using experimental data. The results indicate that sandy gravel under low confining pressures (0.2 and 0.4 MPa) shows a weak softening trend; the higher the confining pressure, the more obvious the hardening tendency (0.6 and 0.8 MPa) and the greater the peak strength. During unloading tests, strain softening occurs, and the peak strength increases with increasing confining pressure. During loading tests, dilatancy appears when the confining pressure is low (0.2 MPa). With increasing confining pressure (0.4, 0.6, and 0.8 MPa), the dilatancy trend gradually weakens, and the cumulative volume tric strain increases, which reflects the relevance of the stress paths. Through research, it is found that the hyperbolic constitutive model has good applicability to sandy gravel soils, and the corresponding model parameters are obtained.
- Subjects :
- Engineering (General). Civil engineering (General)
TA1-2040
Subjects
Details
- Language :
- English
- ISSN :
- 16878086 and 16878094
- Volume :
- 2021
- Database :
- Directory of Open Access Journals
- Journal :
- Advances in Civil Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.222a5ef8beaa4eef9005969c33f4231c
- Document Type :
- article
- Full Text :
- https://doi.org/10.1155/2021/4998351