DBPapers
DOI: 10.5593/SGEM2014/B12/S2.104

SOLID – WIRE ELEMENTS INTERACTION USED FOR NUMERICAL ANALYSIS OF A JACKET TYPE FOUNDATION OF AN OFFSHORE STEEL PLATFORM

I. R. Racanel, S. A. Constantinescu,D. M. Manoli,M. S. Serbulea
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-08-7 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 2, 815-822 pp

ABSTRACT
Classical analysis of pile driven offshore platforms implies several simplified hypotheses that cannot provide accurate results for those types of structures. The interaction between the jacket legs inner surface and the piles shaft as well as the interaction between piles and soil are is difficult to assess in terms of displacements and interaction stresses. The article presents a numerical research study on an existing offshore platform in the Black Sea, using coupled wire-solid elements aiming to obtain an accurate structural response efforts with maximum efficiency, combining the benefits of simple 1 dimensional elements with complex 3 dimensional elements that can describe more accurately the material and contact behaviour between the elements of the structure. The results of the coupled analysis shall be compared with the classical simplified wire model in order to highlight the important results differences.

Keywords: offshore structures, jacket foundations, wire to solid element coupling