Finite-Element Analysis on the Stability of Geotextile Tube–Reinforced Embankments under Scouring

AbstractScouring is a significant problem on river bank and coastal protection systems. Severe scouring can cause damaging consequences to geotextile tube embankment structures. In this study, five case scenarios of an embankment system supported by stacked geotextile tubes were analyzed using a com...

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Bibliographic Details
Published in:International journal of geomechanics 2015-04, Vol.15 (2)
Main Authors: Kim, Hyeong-Joo, Won, Myoung-Soo, Jamin, Jay C
Format: Article
Language:English
Subjects:
Embankments
Foundations
Freshwater
Geotextiles
Gravel
Riprap
Scouring
Stacking
Technical Notes
Tubes
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Summary:AbstractScouring is a significant problem on river bank and coastal protection systems. Severe scouring can cause damaging consequences to geotextile tube embankment structures. In this study, five case scenarios of an embankment system supported by stacked geotextile tubes were analyzed using a commercially available finite-element analysis software. These case scenarios include (1) conventional geotextile tube stacking on ground base foundation; (2) geotextile tube stacking on gravel bedding foundation; (3) geotextile tube stacking on excavated foundation; (4) geotextile tube stacking on excavated foundation with gravel bedding; and (5) fortification of stacked geotextile tubes by riprap protection. Each case scenario is simulated under normal loading and critical loading conditions with and without scouring at the base toe of the embankment system. Results suggest that the potential problems that occur during scouring and critical states of the embankment system instigate failures that could destabilize the geotextile tube retaining structure. Among all the case scenarios considered, additional fortification by riprap increases the performance and global stability of the geotextile tube embankment system.
ISSN:1532-3641
1943-5622
DOI:10.1061/(ASCE)GM.1943-5622.0000420