0

Full Content is available to subscribers

Subscribe/Learn More  >

Wave Impact Loads on Offshore Gravity Based Structure

[+] Author Affiliations
Ben de Sonneville, Bas Hofland, Bo Terp Paulsen

Deltares, Delft, The Netherlands

Amund Mowinckel

Aibel, Asker, Norway

Paper No. OMAE2015-41879, pp. V001T01A015; 10 pages
doi:10.1115/OMAE2015-41879
From:
  • ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology; Offshore Geotechnics
  • St. John’s, Newfoundland, Canada, May 31–June 5, 2015
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5647-5
  • Copyright © 2015 by ASME

abstract

Aibel is developing an offshore power converter platform concept. Its foundation is gravity-based and consists of four columns interconnected by a ring-shaped pontoon at the seabed. The platform is intended for water depths in the order of 20 to 40m. In these waters, breaking waves typically cause large wave loads on the foundation that need to be accounted for in the design. The slamming loads, pressures and air gap at the platform were investigated with a combined approach of physical and numerical modeling. This paper summarizes the set-up, test program, measurement techniques, results and analysis of the physical model tests.

The tests showed that reflection and diffraction patterns caused a significant steepening of the waves between the columns, reducing the air gap and increasing the slamming frequency and magnitude on the downstream columns and underside of the deck. Excitation of resonant wave modes was identified for certain wave frequencies. Although the global wave loads were primarily governed by inertia, largest loads occurred under slamming impacts on the upstream columns, in phase with the inertial force.

Copyright © 2015 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In