Development of Resilient Breakwater against Earthquake and Tsunami
Publication: International Journal of Geomechanics
Volume 19, Issue 1
Abstract
The coastal areas in Japan suffered devastating damage due to the great East Japan earthquake and tsunami in 2011. Breakwaters collapsed mainly because of foundation failures during the earthquake and tsunami. Due to the breakwater failures, the tsunami entered the coastal zones and imposed deep devastation. This study focused on the development of reinforcing countermeasures for a breakwater foundation that can produce a resilient breakwater against earthquakes and tsunamis, such as foundations reinforced with sheet piles and gabions. Physical model tests were carried out for scaled-down breakwater models to examine the performance of the reinforcing countermeasures under an earthquake and tsunami. During the tests, the developed reinforced model was found to be effective in mitigating the damage of the breakwater created by the earthquake and tsunami. Numerical simulations were performed to further clarify the mechanism.
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Acknowledgments
Financial support for this research was granted by the Japan Iron and Steel Federation. The authors express deep gratitude for this. Special thanks go to Associate Professor K. Kasama of Kyushu University for his cooperation during physical model tests. The authors are grateful to the unknown reviewers for their valuable comments.
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Published In
International Journal of Geomechanics
Volume 19 • Issue 1 • January 2019
Copyright
© 2018 American Society of Civil Engineers.
History
Received: Aug 24, 2017
Accepted: Jun 8, 2018
Published online: Nov 9, 2018
Published in print: Jan 1, 2019
Discussion open until: Apr 9, 2019
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