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Published in:
2020 | OriginalPaper | Chapter
Effects of Geogrid and Floating Piles on Performance of Highway Embankment Constructed Over Clayey Soil
Authors : Dinesh Kumar Verma, Baleshwar Singh
Published in: Construction in Geotechnical Engineering
Publisher: Springer Singapore
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Abstract
In this study, a highway embankment is modeled using 3D finite element package, for a deep medium clay soil site reinforced with piles along with a geogrid layer within the embankment. The pile length, pile spacing, and the geogrid stiffness are then varied. From the numerical analysis, settlement of the embankment surface, foundation surface, and pile cap as well as the lateral deformation of the foundation soil, and embankment toe are computed and compared. The distribution of vertical stresses among the piles and the foundation soil is also determined. The results of the numerical analysis show that inclusion of the piles has a greater influence on reducing the settlement of embankment and foundation surfaces, with the geogrid restricting the lateral deformation at the embankment toe and foundation soil due to enhanced load transfer mechanism.