SCOURING MECHANISM BEHIND SEAWALL FROM TSUNAMI OVERFLOW AND OPTIMUM CONDITIONS TO REDUCE TSUNAMI ENERGY WITH AN ARTIFICIAL TRENCH

Gozo Tsujimoto; Ryo Mineura; Fumihiko Yamada; Tetsuya Kakinoki; Kohji Uno

doi:10.9753/icce.v34.structures.38

No. 34 (2014), Coastal Structures

No. 34 (2014)

SCOURING MECHANISM BEHIND SEAWALL FROM TSUNAMI OVERFLOW AND OPTIMUM CONDITIONS TO REDUCE TSUNAMI ENERGY WITH AN ARTIFICIAL TRENCH

Coastal Structures

https://doi.org/10.9753/icce.v34.structures.38

Published 2014-10-28

Gozo Tsujimoto
Ryo Mineura
Fumihiko Yamada
Tetsuya Kakinoki
Kohji Uno

Gozo Tsujimoto

Ryo Mineura

Fumihiko Yamada

Tetsuya Kakinoki

Kohji Uno

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Keywords

laboratory experiment
CADMAS-SUF
k-e turbulence modeling

How to Cite

Tsujimoto, G., Mineura, R., Yamada, F., Kakinoki, T., & Uno, K. (2014). SCOURING MECHANISM BEHIND SEAWALL FROM TSUNAMI OVERFLOW AND OPTIMUM CONDITIONS TO REDUCE TSUNAMI ENERGY WITH AN ARTIFICIAL TRENCH. Coastal Engineering Proceedings, 1(34), structures.38. https://doi.org/10.9753/icce.v34.structures.38

Abstract

Some of coastal structures were collapsed owing to the local scouring by overflows after Tohoku tsunami. In order to understand the characteristics of the scouring behind seawalls due to tsunami, experimental studies and numerical simulation were carried out. The sour profiles formed behind a seawall could be classified into two types. The turbulent kinematic energy has effects on the development of the scour hole. The kinematic energy will decrease with an artificial trench behind a seawall. The rate of energy decay depended on the scale of trench not the shape.

https://doi.org/10.9753/icce.v34.structures.38

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References

CADMAS-SURF 2001. Coastal Development Institute of Technology(in Japanese)

Tanimoto, T., K. Tokita, H. Kitagawa and S. Araki 1978. Investigation on resistance of earth bank and reduction by dug pool against Tsunami, Journal of Costal Engineering, JSCE, Vol.59, 316-320 (in Japanese).

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SCOURING MECHANISM BEHIND SEAWALL FROM TSUNAMI OVERFLOW AND OPTIMUM CONDITIONS TO REDUCE TSUNAMI ENERGY WITH AN ARTIFICIAL TRENCH

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