ARMOR DAMAGE ON HARBOR-SIDE RUBBLE MOUND OF COMPOSITE BREAKWATERS AGAINST WATER JET CAUSED BY IMPINGING BORE-LIKE TSUNAMI

Autor:	Sohei Maruyama, Akira Matsumoto, Jun Mitsui, Minoru Hanzawa
Rok vydání:	2014
Předmět:	Jet (fluid) Armour business.industry Hydrodynamic forces Flow (psychology) Composite number Rubble Water jet Structural engineering engineering.material Breakwater engineering General Earth and Planetary Sciences Geotechnical engineering business Geology General Environmental Science
Zdroj:	Coastal Engineering Proceedings. 1:35
ISSN:	2156-1028 0589-087X
Popis:	A series of hydraulic model experiments was systematically and carefully carried out to estimate the stability of various types of armor units for a harbor-side rubble mound of a composite breakwater against a water jet caused by an impinging bore-like tsunami. Armor stones of weight 1 ton were seen to be easily removed by the tsunami flow. Flat type concrete blocks with well-arranged holes showed high stability. In the case of using wave-dissipating blocks, the total stability of the armor layer was enhanced by placing heavier blocks along the toe of the slope. Numerical analysis was also carried out to investigate the effect of the shape of the blocks. The computed time series of water level and the behavior of the impinging jet agreed well with the experimental ones. The computational result of hydrodynamic forces acting on armor blocks revealed that the uplift forces were largely decreased by the holes in the blocks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::691db5792b83e266c2e1978654395d1f https://doi.org/10.9753/icce.v34.structures.35 Zobrazit plný text záznamu