Dynamic behaviour of a flexible membrane tsunami Barrier with Dyneema®

Dynamic behaviour of a flexible membrane tsunami Barrier with Dyneema®

Hofland, Bas (Deltares)
Marissen, R. (TU Delft Structural Integrity & Composites)
Bergsma, O.K. (TU Delft Structural Integrity & Composites)

2016

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.

dyneema
tsunami barrier
tsunami modelling

http://resolver.tudelft.nl/uuid:241bb428-b725-4e06-9b96-48c88b5f89e7

Proceedings of Coastal Structures & Solutions to Coastal Disasters Joint Conference

International conference "Coastal structures and solutions to coastal disasters", 2015-09-09 → 2015-09-11, Boston, United States

Accepted Author Manuscript

Institutional Repository

conference paper

© 2016 Bas Hofland, R. Marissen, O.K. Bergsma