TY - JOUR
T1 - Modified heel pressure formula to simulate tilting of a composite caisson breakwater
AU - Esteban, Miguel
AU - Takagi, Hiroshi
AU - Shibayama, Tomoya
N1 - Funding Information:
This work was supported by the grant in aid for scientific research, No. (B) 22404011 of the Japan Society for the Promotion of Science (JSPS). The authors would also like to thank the contributions of three anonymous reviewers, who greatly helped increase the quality of this paper. In particular, the insistence of one reviewer on the issue of the duration of the storm led to new simulations that greatly increased the accuracy of the final results, and his contribution through this suggestion is noted.
PY - 2012/12
Y1 - 2012/12
N2 - Susami West Breakwater, a composite caisson breakwater located in Japan, was damaged by high waves caused by typhoon Tokage on the 20th of October 2004. The failure mode was characterized by the sliding/tilting of the caissons and the removal of the concrete armoring units. The failure of these armor units is believed to increase the pressures exerted by the waves on the caisson, and thus exacerbate the expected deformations in the rubble mound foundation, a fact which has thus far been ignored in previous research. The present paper proposes a methodology to take into account the effect of these concrete armor units to estimate the deformations that took place in the rubble mound foundation. The methodology uses a modification of the method by Goda [1985] proposed by Esteban et al. [2009] that can approximate to the right order of magnitude the vertical deformations at the back of the caisson by using a Monte Carlo simulation.
AB - Susami West Breakwater, a composite caisson breakwater located in Japan, was damaged by high waves caused by typhoon Tokage on the 20th of October 2004. The failure mode was characterized by the sliding/tilting of the caissons and the removal of the concrete armoring units. The failure of these armor units is believed to increase the pressures exerted by the waves on the caisson, and thus exacerbate the expected deformations in the rubble mound foundation, a fact which has thus far been ignored in previous research. The present paper proposes a methodology to take into account the effect of these concrete armor units to estimate the deformations that took place in the rubble mound foundation. The methodology uses a modification of the method by Goda [1985] proposed by Esteban et al. [2009] that can approximate to the right order of magnitude the vertical deformations at the back of the caisson by using a Monte Carlo simulation.
KW - Composite caisson breakwater
KW - caisson sliding
KW - caisson tilting
KW - rubble mound foundation failure
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U2 - 10.1142/S0578563412500222
DO - 10.1142/S0578563412500222
M3 - Article
AN - SCOPUS:84873343767
SN - 2166-4250
VL - 54
JO - Coastal Engineering Journal
JF - Coastal Engineering Journal
IS - 4
M1 - 1250022
ER -