Sloped granular open filters under wave loading

Guido Wolters, Marcel R.A. Van Gent, Jelle Olthof, Gregory M. Smith

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Rubble mound coastal structures typically contain granular filters in one or more layers. These filters are normally geometrically tight (to prevent material washout), often difficult to realize in the field, and expensive. An alternative is a geometrically open filter. A geometrically open filter has a large ratio of the size of toplayer material and underlayer material and is designed in such a way that it fulfills its filter functions with only minimal base material loss or settlement. Potential applications of open filters include bed protections and toe & slope configurations of coastal structures. Proper guidelines on the design of open filters under wave loading could lead to significant cost and material savings, and to a more practical application of filters in the field. Physical model tests were conducted in a wave flume. These tests focussed on granular open filters on a 1:7 sand slope under wave loading. The analysis of the tests has led to guidelines on the amount of erosion of the sand underneath a granular filter and of the sand accretion within a granular filter.

Original languageEnglish
Title of host publicationProceedings of the 34th International Conference on Coastal Engineering, ICCE 2014
EditorsPatrick Lynett
PublisherAmerican Society of Civil Engineers (ASCE)
Number of pages14
ISBN (Electronic)9780989661126
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event34th International Conference on Coastal Engineering, ICCE 2014 - Seoul, Korea, Republic of
Duration: 15 Jun 201420 Jun 2014

Publication series

NameProceedings of the Coastal Engineering Conference
Volume2014-January
ISSN (Print)0161-3782

Conference

Conference34th International Conference on Coastal Engineering, ICCE 2014
Country/TerritoryKorea, Republic of
CitySeoul
Period15/06/1420/06/14

Keywords

  • Open filter
  • Physical model tests
  • Revetment
  • Rubble-mound breakwater
  • Transport filter
  • Waves

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