Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion Material

Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion Material

An accurate description of composite geomembrane-cushion interface behavior is of great importance for stress-deformation analysis and stability assessment of geomembrane surface barrier of rock-fill dam. A series of direct shear tests were conducted to investigate the friction behaviors of interfac...

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Main Authors: Haimin Wu, Yiming Shu, Linjun Dai, Zhaoming Teng
Format: Article
Language:English
Published: Hindawi Limited 2014-01-01
Series:Advances in Materials Science and Engineering
Online Access:http://dx.doi.org/10.1155/2014/184359
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spelling doaj-2e92011a2a9e4c7eaff36f1ff3e66fb72020-11-25T00:22:33ZengHindawi LimitedAdvances in Materials Science and Engineering1687-84341687-84422014-01-01201410.1155/2014/184359184359Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion MaterialHaimin Wu0Yiming Shu1Linjun Dai2Zhaoming Teng3State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, ChinaState Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaAn accurate description of composite geomembrane-cushion interface behavior is of great importance for stress-deformation analysis and stability assessment of geomembrane surface barrier of rock-fill dam. A series of direct shear tests were conducted to investigate the friction behaviors of interfaces between composite geomembrane and two different permeable cushion materials (crushed stones and polyurethane mixed crushed stones). The shear stress-displacement relationships of the two interfaces show different characteristics and were described by the nonlinear-elastic model and nonlinear-elastic perfectly plastic model, respectively. Then the two models were implemented into the Fast Lagrangian Analysis of Continua in Three Dimensions (FLAC3D) procedure correctly. By verification of a numerical example, numerical calculation results showed a good agreement with the theoretical solutions and test results.http://dx.doi.org/10.1155/2014/184359
collection DOAJ
language English
format Article
sources DOAJ
author Haimin Wu
Yiming Shu
Linjun Dai
Zhaoming Teng
spellingShingle Haimin Wu
Yiming Shu
Linjun Dai
Zhaoming Teng
Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion Material
Advances in Materials Science and Engineering
author_facet Haimin Wu
Yiming Shu
Linjun Dai
Zhaoming Teng
author_sort Haimin Wu
title Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion Material
title_short Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion Material
title_full Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion Material
title_fullStr Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion Material
title_full_unstemmed Mechanical Behavior of Interface between Composite Geomembrane and Permeable Cushion Material
title_sort mechanical behavior of interface between composite geomembrane and permeable cushion material
publisher Hindawi Limited
series Advances in Materials Science and Engineering
issn 1687-8434
1687-8442
publishDate 2014-01-01
description An accurate description of composite geomembrane-cushion interface behavior is of great importance for stress-deformation analysis and stability assessment of geomembrane surface barrier of rock-fill dam. A series of direct shear tests were conducted to investigate the friction behaviors of interfaces between composite geomembrane and two different permeable cushion materials (crushed stones and polyurethane mixed crushed stones). The shear stress-displacement relationships of the two interfaces show different characteristics and were described by the nonlinear-elastic model and nonlinear-elastic perfectly plastic model, respectively. Then the two models were implemented into the Fast Lagrangian Analysis of Continua in Three Dimensions (FLAC3D) procedure correctly. By verification of a numerical example, numerical calculation results showed a good agreement with the theoretical solutions and test results.
url http://dx.doi.org/10.1155/2014/184359
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AT yimingshu mechanicalbehaviorofinterfacebetweencompositegeomembraneandpermeablecushionmaterial
AT linjundai mechanicalbehaviorofinterfacebetweencompositegeomembraneandpermeablecushionmaterial
AT zhaomingteng mechanicalbehaviorofinterfacebetweencompositegeomembraneandpermeablecushionmaterial
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