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Breakwater Damage in Okushiri Port Due to the Hokkaido Nansei-Oki Earthquake Tsunami
A tsunami caused by the Hokkaido-Nansei-oki earthquake struck Okushiri Island and the southwest coast of Hokkaido damaging many port facilities. This paper describes typical breakwater damage at Okushiri Port and the applicability of Tanimoto’s formula for tsunami wave forces on vertical walls based on prototype failure analyses and the result of numerical simulations. The armor stability and the rubble mound scourings were examined from the results of 3-D model tests at a scale of 1/15. The damage patterns at the narrow opening of breakwaters were reproduced by the tests. The necessary weight of armor blocks and foot-protection blocks for breakwater heads were calculated by the C.E.R.C. formula using averaged flow speed at the peak of tsunami.
Breakwater Damage in Okushiri Port Due to the Hokkaido Nansei-Oki Earthquake Tsunami
A tsunami caused by the Hokkaido-Nansei-oki earthquake struck Okushiri Island and the southwest coast of Hokkaido damaging many port facilities. This paper describes typical breakwater damage at Okushiri Port and the applicability of Tanimoto’s formula for tsunami wave forces on vertical walls based on prototype failure analyses and the result of numerical simulations. The armor stability and the rubble mound scourings were examined from the results of 3-D model tests at a scale of 1/15. The damage patterns at the narrow opening of breakwaters were reproduced by the tests. The necessary weight of armor blocks and foot-protection blocks for breakwater heads were calculated by the C.E.R.C. formula using averaged flow speed at the peak of tsunami.
Breakwater Damage in Okushiri Port Due to the Hokkaido Nansei-Oki Earthquake Tsunami
Kimura, Katsutoshi (author) / Mizuno, Yuzo (author) / Tsuruya, Hiroichi (author) / Nakagawa, Yasuyuki (author)
25th International Conference on Coastal Engineering ; 1996 ; Orlando, Florida, United States
Coastal Engineering 1996 ; 4676-4688
1997-08-05
Conference paper
Electronic Resource
English
Tsunamis , Coastal engineering , Sediment transport , Breakwaters , Damage , Harbors , Case studies , Japan , Scour , Coastal structures , Long waves , Wave forces
Breakwater Damage in Okushiri Port Due to the Hokkaido Nansei-oki Earthquake Tsunami
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