| Analysis is performed on tsunami induced damage to breakwater at bay mouth of Kamaishi Harbor during 2011 East Japan earthquake. Due to difference in sea water levels in and out of harbor due to tsunami, combined with seepage flow through rubble mound below breakwater and wave action on breakwater wall, combined failure mechanism is speculated as the major cause of damage to breakwater due to tsunami. Centrifuge model tests using the experimental facility in Disaster Prevention Research Institute, Kyoto University, and two dimensional effective stress analysis by FLIP TULIP are performed to identify the combined failure mechanism (Miura: 2015 Master’s dissertation of Kyoto University) . |
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