Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes
AbstractPrefabricated 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.
Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes
AbstractPrefabricated 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.
Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes
Whittle, Andrew J (Autor:in) / Vytiniotis, Antonios
2017
Aufsatz (Zeitschrift)
Englisch
BKL:
56.20
Ingenieurgeologie, Bodenmechanik
Analysis of PV Drains for Mitigation of Seismically Induced Ground Deformations in Sand Slopes
| British Library Online Contents | 2017
Shaking Table Modeling of Seismically Induced Deformations in Slopes
| British Library Online Contents | 2005
Shaking Table Modeling of Seismically Induced Deformations in Slopes
| Online Contents | 2005
Effectiveness of PV Drains for Mitigating Earthquake-Induced Deformations in Sandy Slopes
| British Library Conference Proceedings | 2013