Dynamic behaviour of a flexible membrane tsunami Barrier with Dyneema®

Bas Hofland, Roel Marissen, Otto Bergsma

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

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Abstract

Proof-of-concept model tests on a novel self-deploying on-shore tsunami barrier were executed. The tsunami barrier consists of a membrane, floater and cables that are stored underground. Due to buoyancy the barrier self-deploys when struck by a tsunami. The membrane and cables consist of the strong, flexible and light-weight material Dyneema that can resist a 20 m high water column. A novel tsunami generating method was applied to generate a high-velocity initial bore, followed by a long duration high water level, using a normal piston type wave maker in a wave flume. Numerical calculations using a numerical Volume-of-Fluid code were used to tune the tsunami generation. The tests showed that the tsunami barrier indeed automatically deployed and completely blocked a 19 m high (reflected) tsunami for bore velocities up to 7.5 m/s. For higher bore velocities the barrier still deployed. For larger tsunamis (with a 33 m reflected water depth) the barrier remained erected, although overflow evidently occurred.
Original languageEnglish
Title of host publicationProceedings of Coastal Structures & Solutions to Coastal Disasters Joint Conference
Number of pages12
Publication statusPublished - 2016
EventInternational conference "Coastal structures and solutions to coastal disasters" - Boston, United States
Duration: 9 Sep 201511 Sep 2015
http://www.copricoastalconference.org/

Conference

ConferenceInternational conference "Coastal structures and solutions to coastal disasters"
Abbreviated titleCOPRI Coastal 2015
CountryUnited States
CityBoston
Period9/09/1511/09/15
Internet address

Keywords

  • dyneema
  • tsunami barrier
  • tsunami modelling

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