Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Breakwater Stability under Regular and Irregular Wave Attack
The main objective of the present study was to compare the damage to a rubble mound breakwater under regular and irregular wave attack, and thereby identify an irregular wave height parameter that corresponds to the wave height of a regular wave in terms of inducing a similar degree of damage to the structure. The 1984 edition of the Shore Protection Manual recommends this irregular wave height parameter to be H1/10 (the average of the highest one-10th of the waves in a sea state), but other researchers recommend H1/30 (e.g. Vidal et al., 1995). For the present study, H1/20 is the irregular wave height parameter that yields the best correspondence between irregular and regular waves. However, this result is dependent on the length of the time series and on the number of times this time series is recycled to achieve a given damage level. The new wave height parameter Hn (the average of the n highest waves in a sea state) proposed by Vidal et al. (1995) takes into account the statistics of the large waves contained in the time series as well as the number of times this time series is recycled. The present study indicates that H250 (the average of the highest 250 waves in the sea state) is a suitable wave height parameter for characterizing breakwater stability under irregular waves.
Breakwater Stability under Regular and Irregular Wave Attack
The main objective of the present study was to compare the damage to a rubble mound breakwater under regular and irregular wave attack, and thereby identify an irregular wave height parameter that corresponds to the wave height of a regular wave in terms of inducing a similar degree of damage to the structure. The 1984 edition of the Shore Protection Manual recommends this irregular wave height parameter to be H1/10 (the average of the highest one-10th of the waves in a sea state), but other researchers recommend H1/30 (e.g. Vidal et al., 1995). For the present study, H1/20 is the irregular wave height parameter that yields the best correspondence between irregular and regular waves. However, this result is dependent on the length of the time series and on the number of times this time series is recycled to achieve a given damage level. The new wave height parameter Hn (the average of the n highest waves in a sea state) proposed by Vidal et al. (1995) takes into account the statistics of the large waves contained in the time series as well as the number of times this time series is recycled. The present study indicates that H250 (the average of the highest 250 waves in the sea state) is a suitable wave height parameter for characterizing breakwater stability under irregular waves.
Breakwater Stability under Regular and Irregular Wave Attack
Jensen, Thomas (Autor:in) / Andersen, Henning (Autor:in) / Grønbech, John (Autor:in) / Mansard, Etienne P. D. (Autor:in) / Davies, Michael H. (Autor:in)
25th International Conference on Coastal Engineering ; 1996 ; Orlando, Florida, United States
Coastal Engineering 1996 ; 1679-1692
05.08.1997
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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