Identifying the key parameters that influence geogrid reinforcement of railway ballast

A series of experiments are described involving the full-scale simulation of geogrid reinforcement for railway ballast, which allowed the key parameters influencing the reduction in vertical settlement (permanent deformation) under repeated loading to be studied. The results demonstrated that grid g...

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Bibliographic Details
Published in:Geotextiles and geomembranes 2007-12, Vol.25 (6), p.326-335
Main Authors: Brown, S.F., Kwan, J., Thom, N.H.
Format: Article
Language:English
Subjects:
Geogrid
Railway ballast
Railway track design
Railway track maintenance
Railway track performance
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Summary:A series of experiments are described involving the full-scale simulation of geogrid reinforcement for railway ballast, which allowed the key parameters influencing the reduction in vertical settlement (permanent deformation) under repeated loading to be studied. The results demonstrated that grid geometry, stiffness, rib cross-sectional shape and junction strength are all influential. The research data was applied as part of a wide ranging study to improve the effectiveness of ballast reinforcement and understanding of the fundamentals of grid/aggregate interaction.
ISSN:0266-1144
1879-3584
DOI:10.1016/j.geotexmem.2007.06.003