Author(s): A. B. Foss

Linked Author(s):

Keywords:

Abstract: A field program was undertaken in 2017 to (i) measure the forces in the ice sheet near a dam and (ii) observe the behavior of the ice sheet with controlled water level fluctuation of the reservoir. The field program was conducted at Dam Taraldsvikfossen outside Narvik town, located in northern Norway. Three different load scenarios were tested with 0.06,0. 22 and 0.35 m water level fluctuations. During the load scenario with 0.06 water level fluctuations it was considered that the ice pressure was reduced due to the variation in water level. The maximum ice load was registered at 85 kN/m during the load events with the highest variation in water level. It was concluded that the volume of the cracks, the number of cracks and the volume of refreezing of the cracks in an ice cover had a major impact on the ice load. These parameters, together with water level fluctuation, ice thickness and temperature variation, had the greatest impact on both the maximum value of the load and the ice sheet behavior. In an overall assessment of all the components presented in the paper, it was concluded that today‘s knowledge of ice loads is still limited. A general assessment of the measurement program and the measurement results has been conducted as a basis for continuing similar measurement programs.

DOI:

Year: 2020