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    Analysis of unreinforced and reinforced shallow piled embankments subject to cyclic loading

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    Publication date
    2019
    Author
    Aqoub, K.
    Mohamed, Mostafa H.A.
    Sheehan, Therese
    Keyword
    Geosynthetics
    Piled embankment
    Arching of soil
    Cyclic loading
    Tensioned membrane
    Soil heaving
    Shallow embankment
    Soil reinforcement
    Reinforced piled embankment
    Rights
    © 2019 Thomas Telford (ICE Publishing). Reproduced in accordance with the publisher's self-archiving policy.
    Peer-Reviewed
    yes
    
    Metadata
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    Abstract
    Reinforced piled embankment technique is becoming increasingly utilised for the construction over soft grounds due to its efficiency on reducing potential settlement, speed of construction and associated cost. Most of previous studies focused on developing understanding for the behaviour of thick embankments that are loaded with a static surcharge load. Data for the behaviour of shallow piled embankments under cyclic loadings are scarce. In this study, an experimental programme was undertaken using a fully instrumented testing rig to generate data and improve our understanding for the behaviour of unreinforced and reinforced shallow piled embankments subject to monotonic and cyclic loadings that were applied over a predetermined area of the embankment. The experimental results showed that collapse of soil arching is imminent and occurs during the first few cycles of load. However, regain of strength and recovery of the arching effect was observable during further stages of cyclic loadings due to densification of the embankment material and deformation of the soft subsoil. Inclusion of reinforcement layers was found to enhance the performance of load transfer mechanisms by concentrating stresses on pile caps. The results clearly showed a significant reduction in surface settlement, soft subsoil settlement and heaving with increasing the number of reinforcement layers.
    URI
    http://hdl.handle.net/10454/16763
    Version
    Accepted Manuscript
    Citation
    Aqoub K, Mohamed MHA and Sheehan T (2019) Analysis of unreinforced and reinforced shallow piled embankments subject to cyclic loading. Geosynthetics International. Accepted for publication.
    Link to publisher’s version
    https://www.icevirtuallibrary.com/toc/jgein/current
    Type
    Article
    Collections
    Engineering and Informatics Publications

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