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Numerical analysis of ice loads on Taraldsvikfossen dam

Abstract

Static ice loads (ice actions) are a key design parameter for dams in cold climates. Since 2012,ice stresses have been measured at Taraldsvikfossen reservoir located in Narvik, Norway. Similar to earlier observations in Canada, it became evident from the first three years of data that various effects resulted in stresses, including thermal expansion and water level fluctuations, and that the relative dominance of the processes varied between seasons. A numerical model, using the commercially available finite element software LS-DYNA, is presented for the prediction of the stress field in an ice sheet due to temperature changes and water fluctuations as a function of time, under a variety of conditions. The finite element model accounts for variable temperature and properties through the thickness, an elastic foundation representation of the underlying water, nonlinear constitutive behavior of the ice, temperature dependent mechanical properties, flexibility of resisting structures. For verification of the numerical model, results from simulation are compared with measured temperatures and
stresses at Taraldsvikfossen reservoir.
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Category

Academic chapter

Language

English

Author(s)

Affiliation

  • SINTEF Narvik
  • UiT The Arctic University of Norway

Year

2020

Publisher

The International Association for Hydro-Environment Engineering and Research (IAHR)

Book

PROCEEDINGS OF THE 25th INTERNATIONAL SYMPOSIUM ON ICE Trondheim, Norway, 23rd – 25th November 2020

ISBN

9788275981200

View this publication at Norwegian Research Information Repository