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A platform for research: civil engineering, architecture and urbanism
Design concerns and performance of geomembrane anchor trenches
The main purpose of an anchor trench is to secure geosynthetics at the top of slopes. As such, the tendency for most designers is to firmly secure the geosynthetics so that movement or pullout does not occur. However, the basic design consideration should be extended to allow pullout of the geosynthetics from the anchor trench rather than have the geomembrane tear if excess stresses are developed. The emphasis should be placed not on the construction condition, where potential problems may be easily remedied, but on the long-term performance where liner problems may have a greater impact. A realistic design procedure is therefore needed to determine the resistance provided by the anchor trench to check the potential stresses that can be resisted while confirming that the allowable tensile strengths of the geosynthetics are not exceeded. Following a review of anchor trench designs and methodologies, case studies will be presented to show anchor trenches that have been demonstrated to work. Perhaps more importantly, cases where problems have occurred as a result of poorly designed or constructed anchor trenches will also be presented.
Design concerns and performance of geomembrane anchor trenches
The main purpose of an anchor trench is to secure geosynthetics at the top of slopes. As such, the tendency for most designers is to firmly secure the geosynthetics so that movement or pullout does not occur. However, the basic design consideration should be extended to allow pullout of the geosynthetics from the anchor trench rather than have the geomembrane tear if excess stresses are developed. The emphasis should be placed not on the construction condition, where potential problems may be easily remedied, but on the long-term performance where liner problems may have a greater impact. A realistic design procedure is therefore needed to determine the resistance provided by the anchor trench to check the potential stresses that can be resisted while confirming that the allowable tensile strengths of the geosynthetics are not exceeded. Following a review of anchor trench designs and methodologies, case studies will be presented to show anchor trenches that have been demonstrated to work. Perhaps more importantly, cases where problems have occurred as a result of poorly designed or constructed anchor trenches will also be presented.
Design concerns and performance of geomembrane anchor trenches
Konstruktionsbelange und Funktionstüchtigkeit von Geomembran-Verankerungsgräben
Hullings, D.E. (author) / Sansone, L.J. (author)
Geotextiles and Geomembranes ; 15 ; 403-417
1997
15 Seiten, 12 Bilder, 7 Quellen
Article (Journal)
English
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