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Radial consolidation of prefabricated vertical drain-reinforced soft clays under cyclic loading
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Ni, Jing and Geng, Xue-yu (2022) Radial consolidation of prefabricated vertical drain-reinforced soft clays under cyclic loading. Transportation Geotechnics, 37 . 100840. doi:10.1016/j.trgeo.2022.100840 ISSN 2214-3912.
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WRAP-Radial-consolidation-of-prefabricated-vertical-drain-reinforced-soft-clays-under-cyclic-loading-Geng-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1656Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.trgeo.2022.100840
Abstract
Previous studies have revealed that prefabricated vertical drains (PVDs) are effective in stabilizing the soft subgrade soils under traffic-induced cyclic loads. A consolidation model of soft clays under cyclic loading incorporating both radial and vertical drainages, and nonlinear variation of compressibility and permeability is presented in this paper. The prediction of the model matches well with the result from a large-scale cyclic triaxial test conducted on a soil sample installed with a single PVD. Parametric analysis has also been carried out to explore the impacts of cyclic degradation parameter, cyclic stress ratio, nonlinear compressibility and permeability, cyclic loading frequency, drainage condition, and number of loading cycles on the behaviors of the PVD-reinforced soil. Results indicate that radial drainage helps to decelerate the accumulation of excess pore pressures under cyclic loading due to two factors: increased rate of excess pore pressure dissipation and decreased rate of internal excess pore pressure generation. In addition, radial drainage also facilitates the rapid dissipation of excess pore pressures during rest period, leading to a denser soil which is stronger for resisting the subsequent set of cyclic loads. The findings of this study demonstrate the usefulness of PVDs in reinforcing soft subgrades under cyclic loading conditions, e.g., road pavement, railway embankment, etc.
Item Type: | Journal Article | ||||||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TC Hydraulic engineering. Ocean engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||
Library of Congress Subject Headings (LCSH): | Vertical drains , Soil stabilization, Clay soils, Drainage , Loads (Mechanics), Soil mechanics | ||||||||||||
Journal or Publication Title: | Transportation Geotechnics | ||||||||||||
Publisher: | Elsevier Inc. | ||||||||||||
ISSN: | 2214-3912 | ||||||||||||
Official Date: | November 2022 | ||||||||||||
Dates: |
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Volume: | 37 | ||||||||||||
Number of Pages: | 9 | ||||||||||||
Article Number: | 100840 | ||||||||||||
DOI: | 10.1016/j.trgeo.2022.100840 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 12 October 2022 | ||||||||||||
Date of first compliant Open Access: | 14 October 2022 | ||||||||||||
RIOXX Funder/Project Grant: |
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