Abstract
This paper presents a numerical model, called consolidation settlement - elastic-viscoplastic (CS-EVP), for the consolidation of layered soft soils, including soil self-weight and time-dependent compressibility effects. CS-EVP was developed using the piecewise-linear method for large-strain consolidation and elastic-viscoplastic model for time-dependent soil compressibility. The model accounts for vertical strain, soil self-weight, nonlinear hydraulic conductivity and compressibility, nonlinear creep with limited creep strain, and time-dependent surcharge and/or vacuum loading for layered heterogeneous soils. The accuracy of CS-EVP is verified by comparing calculated values with the results from finite-element simulations and a large-scale laboratory vacuum consolidation test of soft soil slurry. Lastly, simulated settlements and excess pore pressure profiles are compared with field measurements for embankment loading in Väsby, Sweden. The results indicate that CS-EVP provides good estimates of long-term large-strain consolidation under both laboratory and field conditions.
Original language | English |
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Article number | 04023121 |
Journal | Journal of Geotechnical and Geoenvironmental Engineering |
Volume | 149 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Dec 2023 |
Keywords
- Consolidation
- Elastic-viscoplastic
- Finite strain
- Layered soil
- Nonlinear creep
- Piecewise-linear
ASJC Scopus subject areas
- General Environmental Science
- Geotechnical Engineering and Engineering Geology