Stability of Breakwater Armor Units against Tsunami Attacks

Article


Esteban, Miguel, Jayaratne, R., Mikami, Takahito, Morikubo, Izumi, Shibayama, Tomoya, Thao, Nguyen Danh, Ohira, Koichiro, Ohtani, Akira, Mizuno, Yusuke, Kinoshita, Mizuho and Matsuba, Shunya 2014. Stability of Breakwater Armor Units against Tsunami Attacks. Journal of Waterway, Port, Coastal, and Ocean Engineering. 140 (2), pp. 188-198.
AuthorsEsteban, Miguel, Jayaratne, R., Mikami, Takahito, Morikubo, Izumi, Shibayama, Tomoya, Thao, Nguyen Danh, Ohira, Koichiro, Ohtani, Akira, Mizuno, Yusuke, Kinoshita, Mizuho and Matsuba, Shunya
Abstract

The design of breakwater armour units against tsunami attacks has received little attention in the past because of the comparative low frequency of these events and the rarity of structures designed specifically to withstand them. However, field surveys of recent events, such as the 2011 Great Eastern Japan Earthquake Tsunami and the 2004 Indian Ocean Tsunami, have shown flaws in the design of protection structures. During these extreme events, many breakwaters suffered partial or catastrophic damage. Although it is to be expected that most normal structures fail due to such high order events, practicing engineers need to possess tools to design certain important breakwaters that should not fail even during level 2 events. Research into the design of critical structures that only partially fail (i.e., “resilient” or “tenacious” structures) during a very extreme level 2 tsunami event should be prioritized in the future, and in this sense the present paper proposes a formula that allows the estimation of armour unit damage depending on the tsunami wave height.

JournalJournal of Waterway, Port, Coastal, and Ocean Engineering
Journal citation140 (2), pp. 188-198
ISSN1943-5460
0733-950X
Year2014
PublisherAmerican Society of Civil Engineering
Accepted author manuscript
License
CC BY-NC-ND
Accepted author manuscript
License
CC BY-NC-ND
Web address (URL)http://dx.doi.org/10.1061/(ASCE)WW.1943-5460.0000227
Publication dates
PrintMar 2014
Publication process dates
Deposited27 Oct 2014
Copyright informationThis material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers
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