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oai:recercat.cat:2117/970142026-01-30T02:52:56Zcom_2072_1033col_2072_452950

Macroelement modeling of SSI effects on offshore wind turbines subject to large number of loading cycles Salciarini, Diana Frizza, Martina Tamagnini, Claudio Arroyo Álvarez de Toledo, Marcos Abadías Gómez, David Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia Soil-structure interaction--Mathematical models Wind turbines--Design and construction Geotechnical engineering Offshore structures Wind turbines Cyclic displacements FE analysis Geometrical characteristics Interaction process Macro element Parametric forms Small-scale modeling SSI analysis Interacció sòl-estructura -- Models matemàtics Aerogeneradors -- Disseny i construcció In this paper, the hypoplastic macroelement formulation proposed by [1] has been modified in order to extend its range of applicability to offshore structures subject to cyclic loads with very high number of cycles, with particular attention to fatigue phenomena and cyclic displacement accumulation. A series of FE analysis has been performed to model the soil–foundation interaction processes of a prototype of offshore wind turbine, for which the geometrical characteristic of the superstructure and foundation, the soil conditions and the predicted environmental (wave and wind) loads were known. The study, carried out in parametric form, has allowed to better understand the role played by the modified cyclic part of the macroelement model in reproducing the shake–down effects as observed in small–scale model tests. Peer Reviewed Postprint (published version) 2016 Conference report Salciarini, D., Frizza, M., Tamagnini, C., Arroyo, M., Abadías, D. Macroelement modeling of SSI effects on offshore wind turbines subject to large number of loading cycles. A: Italian Conference of Researchers in Geotechnical Engineering. "Procedia Engineering, Volume 158, Pages 1-552 (2016): VI Italian Conference of Researchers in Geotechnical Engineering, CNRIG2016 - Geotechnical Engineering in Multidisciplinary Research: from Microscale to Regional Scale, 22-23 September 2016, Bologna (Italy)". Bologna: Elsevier, 2016, p. 332-337. 1877-7058 https://hdl.handle.net/2117/97014 10.1016/j.proeng.2016.08.451 eng http://www.sciencedirect.com/science/article/pii/S1877705816326595 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access 6 p. application/pdf Elsevier