STABILITY OF RUBBLE MOUND BREAKWATERS AGAINST SOLITARY WAVES

Proceedings of the International Conference on Coastal Engineering

Akira Ohtani¹  Takahito Mikami¹  Koichiro Ohira¹  Thao Danh Nguyen¹  Tomoya Shibayama²  Miguel Esteban²  Izumi Morikubo²  Rafael Aranguiz-Muñoz¹ 

[1] Waseda University

关键词: rubble-mound breakwater;    solitary waves;    tsunami;    Tohoku;    stability;    Hudson;    Van der Meer;   

DOI  :  10.9753/icce.v33.structures.9

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

No formulas currently exist to design armour units against tsunami attack. To develop such formulae, laboratory experiments were carried out to clarify the failure mechanism of these types of structures. Also, the behavior of armour units against real cases of tsunami attack during the 2011 Tohoku tsunami were evaluated. Both the results of the laboratory experiments and the breakwaters studied in the field where then analyzed in terms of well established formulas such as that of Van der Meer or Hudson. The design of structures that only fail partially during a given tsunami event (“resilient” or “tenacious” structures) should be prioritized in future counter-measures, and in order to make it possible to construct such structures a modification of the Hudson formula for their design is proposed.

【 授权许可】

Unknown