TY - JOUR A1 - Cuéllar, Pablo A1 - Mira, P. A1 - Pastor, M. A1 - Merodo, J.A.F. A1 - Baeßler, Matthias A1 - Rücker, Werner T1 - A numerical model for the transient analysis of offshore foundations under cyclic loading T2 - Computers and geotechnics N2 - A comprehensive numerical model for the analysis of offshore foundations under a general transient loading is presented here. The theoretical basis of the model lies on the Swansea formulation of Biot's equations of dynamic poroelasticity combined with a constitutive model that reproduces key aspects of cyclic soil behaviour in the frame of the theory of generalised plasticity. On the practical side, the adoption of appropriate finite element formulations may prevent the appearance of spurious numerical instabilities of the pore pressure field. In this respect, the use of a coupled enhanced-strain element is here proposed. On the other hand, the practicality of the presented model depends ultimately on its computational efficiency. Some practical recommendations concerning the solution strategies, the matrix storage/handling procedures and the parallel multi-processor computation are here provided. Finally, the performance of the model with a benchmark study case and its practical application to analyse the soil–structure interaction of an offshore monopile under a realistic transient storm loading are discussed. PB - Elsevier Ltd. CY - Barking KW - Offshore foundations KW - Cyclic loading KW - Numerical model KW - Pore pressure accumulation KW - Liquefaction analysis PY - 2014 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/30490 AN - OPUS4-30490 SN - 0266-352x VL - 59 SP - 75 EP - 86 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany