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Large Scale Experiments on Tsunami Impact with Vertical Sea Walls

McGovern, D; Robinson, T; Rossetto, T; (2016) Large Scale Experiments on Tsunami Impact with Vertical Sea Walls. In: Proceedings of 1st International Conference on Natural Hazards and Infrastructure. Earthquake Engineering Research Institute: Chania, Greece. Green open access

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Abstract

The impact of tsunami with a vertical sea wall is examined in a series of large scale physical model tests. Of interest to the design engineer is the maximum value and time-history of the force and moments recorded at the wall for a given tsunami wave amplitude and period. This paper presents preliminary selected results from an extensive test programme. Scaled trough-led tsunami periods ranging between approximately 17 – 79 s are generated using a pneumatic long-wave generator. The waves impact a model vertical sea wall which is instrumented with an array of pressure transducers and a multi-axis load cell. The maximum and time-history of the loading is recorded. The results show breaking waves impart dynamic loads while longer non-breaking waves impart a hydrostatic load. The strongest positive correlations between the wave parameters and the maximum force and moment was with amplitude. Weaker negative correlations with wavelength are observed. Potential energy does not appear to influence the force which is proposed to be due to the distribution of the energy in the waveform, implying wave steepness is more important.

Type: Proceedings paper
Title: Large Scale Experiments on Tsunami Impact with Vertical Sea Walls
Event: 1st International Conference on Natural Hazards and Infrastructure: Protection, Design, Rehabilitation, ICONHIC16
Location: Chania, Crete
Dates: 28 June 2016 - 30 June 2016
Open access status: An open access version is available from UCL Discovery
Publisher version: https://www.eeri.org/event/1st-international-confe...
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Tsunami, Wall, Force, Pressure
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10067904
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