The dynamic response of a caisson-type structure resting on a pile foundation to attack by storm waves was evaluated numerically by FEM (finite element method) analysis in order to investigate the feasibility of a pile with an expanded end to support offshore structure foundations. The caisson-type structure, such as a caisson breakwater, caisson-type seawall, dike, dolphin, quaywall or jetty, was assumed to be a linear and elastic solid, and its foundation was assumed to be a linear, elastic and permeable medium to simulate normally consolidated soil. The displacement and the pore water pressure around the piles were estimated numerically while varying the number of piles under the caisson, the distance between piles and the connection between the caisson and the piles. This type of pile foundation prevents the generation of excess pore water pressure beneath the caisson. The connection between the caisson and the piles becomes more important as the uneven settlement and rocking increase.
Application of a pile with an expanded base to the foundation of a caisson structure
International Journal of Offshore and Polar Engineering ; 9 , 3 ; 226-232
1999
7 Seiten, 4 Quellen
Article (Journal)
English
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