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Numerical test for single concrete armour layer on breakwaters

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Title: Numerical test for single concrete armour layer on breakwaters
Authors: Anastasaki, E
Latham, J-P
Xiang, J
Item Type: Journal Article
Abstract: The ability of concrete armour units for breakwaters to interlock and form an integral single layer is important for withstanding severe wave conditions. In reality, displacements take place under wave loading, whether they are small and insignificant or large and representing serious structural damage. In this work, a code that combines finite- and discrete-element methods which can simulate motion and interaction among units was used to conduct a numerical investigation. Various concrete armour layer structures were built using a carefully researched placement technique and then subjected to a boundary vibration. By analysing the displacements and assessing the number of units that were displaced by more than one-third their nominal size, the numerical test programme indicated clearly that the initial build packing density was the most important parameter influencing the stability of concrete armour layers under vibration. The size of the underlayer rock and the type of unit also affected the numerical performance of the single-layer concrete armour systems under vibration. The results presented are for full-scale systems and therefore add further insights into simple laboratory ‘shake tests’, although the oscillatory loading in this study is acknowledged to be profoundly different to wave action.
Issue Date: 10-Nov-2016
Date of Acceptance: 17-Oct-2016
URI: http://hdl.handle.net/10044/1/44695
DOI: https://dx.doi.org/10.1680/jmaen.2014.25
ISSN: 1741-7597
Publisher: ICE Publishing
Start Page: 174
End Page: 187
Journal / Book Title: Proceedings of the Institution of Civil Engineers - Maritime Engineering
Volume: 169
Issue: 4
Copyright Statement: © 2016 ICE Publishing, all rights reserved. Original article available at: https://dx.doi.org/10.1680/jmaen.2014.25. Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
W.F. Baird & Associates Coastal Engineers Ltd
Concrete Layer Innovations
Artelia Eau Environnment
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Funder's Grant Number: GR/S42699/01
Keywords: Environmental Engineering
0911 Maritime Engineering
0905 Civil Engineering
Publication Status: Published
Appears in Collections:Earth Science and Engineering
Faculty of Engineering