[en] Aim of this paper is analysing the breakwater foundation behaviour observed during centrifuge tests performed at the laboratory of GeoDelft (The Netherlands). Dynamic centrifuge tests were performed on a model caisson breakwater, founded on medium-dense sand. The structure was subjected to cyclic horizontal loading simulating regular and irregular wave loading, until failure occurred. The tests were aimed at finding a critical failure mechanism, investigating the influence of the loading scheme and analysing the development of instantaneous pore pressures and residual pore pressures in the sandy subsoil. Test results showed high instantaneous values of excess pore pressures underneath the structure, not leading to a complete “liquefaction flow” failure. Dilation phenomena of sand induced local “recovering” of strength during each cycle and failure occurred according to a progressive mechanism with large cyclic strains.
Disciplines :
Ingénierie civile
Auteur, co-auteur :
Maccarini, F
De Groot, M
VAN BAARS, Stefan ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
Vertical Caisson Breakwaters Cyclically Loaded
Date de publication/diffusion :
septembre 2008
Nom de la manifestation :
11th Baltic Sea Geotechnical Conference on Geotechnics in Maritime Engineering
Lieu de la manifestation :
Gdansk, Pologne
Date de la manifestation :
September 2008
Manifestation à portée :
International
Titre de l'ouvrage principal :
11th Baltic Sea Geotechnical Conference on Geotechnics in Maritime Engineering
Collection et n° de collection :
Proc. 11th Baltic Sea Geotechnical Conf., Gdansk, Sept. 2008; Gdansk Univ. Technol./Pol. Comm. Geotech., 2008, Vol.1, pp. 527-534
