Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes
Name
AVAJW2017_FinalManuscript.pdf
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2.39 MB
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Adobe PDF
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Author(s)
Vytiniotis, Antonios
Whittle, Andrew
Date Issued
May 2017
Journal
Journal of Geotechnical and Geoenvironmental Engineering
Publisher
American Society of Civil Engineers (ASCE)
Citation
Vytiniotis, Antonios, and Andrew J. Whittle. “Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes.” Journal of Geotechnical and Geoenvironmental Engineering 143, 9 (September 2017): 04017049
Version
Author's final manuscript
Abstract
Prefabricated vertical (PV) drain arrays have been proposed as a minimally intrusive technique for mitigating seismically induced ground deformations in sandy liquefiable slopes. This paper describes the representation of individual PV drains as line elements within a finite-element program. The elements can represent laminar or fully turbulent discharge regimes, based on classic Darcy-Weisbach pipe flow, as well as fluid storage above the water table. Two-dimensional, plane strain simulations of coupled flow and deformation are performed using the proposed PV drain elements, with equivalent permeability properties for the surrounding soil mass, and a constitutive soil model describing the nonlinear effective stress-strain behavior of the sand. The numerical predictions are evaluated through comparisons with pore pressures and deformations measured in a centrifuge model test. The results highlight the role of the PV drains and their discharge characteristics in controlling deformation mechanisms.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1061/(ASCE)GT.1943-5606.0001722
