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Peculiarities of Multi-Legged Platform Operation in Ice Condition

[+] Author Affiliations
Evgeny Karulin, Marina Karulina

Krylov State Research Centre, Saint-Petersburg, Russia

Paper No. OMAE2014-23203, pp. V010T07A012; 9 pages
doi:10.1115/OMAE2014-23203
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 10: Polar and Arctic Science and Technology
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4556-1
  • Copyright © 2014 by ASME

abstract

A usage of multi-legged structures in ice conditions involves some peculiarities that should be taken into account both while designing the platform and while planning technological operations nearby it. In 2010–2013 a range of theoretical and experimental studies were performed at the Krylov State Research Centre, St. Petersburg, Russia. The work aimed to investigate main peculiarities of multi-legged structure interaction with ice, such as 1). mutual influence on ice action on each leg, 2) jamming of the inner space between legs and blocking the space between the front legs with ice floes, and 3) arisen yaw moments about the platform vertical axis due to unsymmetrical ice action on the legs. Three series of model tests with various multi-legged structures models were carried out in the Ice Basin. The presented in the paper main results show effect of key parameters on the interaction processes and on the ice action. During the tests the following parameters were varying: distance between the legs, ice drift speed and direction, broken ice concentration and the ice pieces size. Also, the paper contains results of numerical simulations of some tested scenarios in broken ice conditions. The numerical model is based on discrete element method, and it enables to extend a range of the investigations.

Copyright © 2014 by ASME
Topics: Ice

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