Ice force identification on the Nordströmsgrund lighthouse

Torodd S. Nord, Ole Oiseth, Eliz Mari Lourens

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Abstract

Ice forces on bottom-founded structures can be measured by load panels or identified from response measurements. This paper presents a comparison between the measured and identified dynamic ice forces acting on the Nordströmsgrund lighthouse. The dynamic ice forces are identified from the measured responses using a recently developed joint input-state estimation algorithm in conjunction with a reduced-order finite element model. A convincing agreement between the measured and identified forces was found. The response predictive ability of the algorithm is further used to estimate the response of the structure at unmeasured locations including at the ice-action point.

Original languageEnglish
Pages (from-to)24-39
Number of pages16
JournalComputers & Structures
Volume169
DOIs
Publication statusPublished - 1 Jun 2016

Keywords

  • Bottom-founded structure
  • Force identification
  • Force measurements
  • Ice-induced vibrations

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