Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes
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 ele...
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| Format: | Article |
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American Society of Civil Engineers (ASCE)
2018
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| Online Access: | http://hdl.handle.net/1721.1/117512 https://orcid.org/0000-0001-5358-4140 |
| _version_ | 1811077121990197248 |
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| author | Vytiniotis, Antonios Whittle, Andrew |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Vytiniotis, Antonios Whittle, Andrew |
| author_sort | Vytiniotis, Antonios |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T10:38:14Z |
| format | Article |
| id | mit-1721.1/117512 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:38:14Z |
| publishDate | 2018 |
| publisher | American Society of Civil Engineers (ASCE) |
| record_format | dspace |
| spelling | mit-1721.1/1175122022-09-27T13:55:53Z Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes Vytiniotis, Antonios Whittle, Andrew Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Vytiniotis, Antonios Whittle, Andrew 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. 2018-08-24T17:17:22Z 2018-08-24T17:17:22Z 2017-05 2015-05 2018-08-22T16:42:49Z Article http://purl.org/eprint/type/JournalArticle 1090-0241 1943-5606 http://hdl.handle.net/1721.1/117512 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 https://orcid.org/0000-0001-5358-4140 http://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0001722 Journal of Geotechnical and Geoenvironmental Engineering Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Society of Civil Engineers (ASCE) Other repository |
| spellingShingle | Vytiniotis, Antonios Whittle, Andrew Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes |
| title | Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes |
| title_full | Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes |
| title_fullStr | Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes |
| title_full_unstemmed | Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes |
| title_short | Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes |
| title_sort | analysis of pv drains for mitigation of seismically induced ground deformations in sand slopes |
| url | http://hdl.handle.net/1721.1/117512 https://orcid.org/0000-0001-5358-4140 |
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