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Time-dependent spatial distribution of thermal stresses in the ice cover of a small reservoir
Norut Northern Research Institute, Narvik.
Norut Northern Research Institute, Narvik.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.
Norut Northern Research Institute, Narvik.
Vise andre og tillknytning
2015 (engelsk)Inngår i: Cold Regions Science and Technology, ISSN 0165-232X, E-ISSN 1872-7441, Vol. 120, s. 35-44Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Static ice loads (ice actions) are a key design parameter for dams in cold climates. However, their theoretical description is still elusive, introducing uncertainty in design and hindering development of remediation measures. We present and analyze measurements of stresses due to thermal loads in a small reservoir in northern Norway. Several weeks of observations, including both cold and warm spells, were well-described by a simple equation that accounts for thermal expansion and temperature-dependent creep. One model parameter was found to depend systematically on the location of measurements within the reservoir. Biaxial stress measurements showed that the stress field was not homogeneous. Results suggest that the stress field in reservoirs should be predictable from first principles with numerical methods and point toward a promising, simple parameterization.

sted, utgiver, år, opplag, sider
2015. Vol. 120, s. 35-44
HSV kategori
Forskningsprogram
Konstruktionsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-3218DOI: 10.1016/j.coldregions.2015.09.003ISI: 000365055400004Scopus ID: 2-s2.0-84942314058Lokal ID: 103e1f63-f16c-4960-acb9-ae2da302d379OAI: oai:DiVA.org:ltu-3218DiVA, id: diva2:976074
Merknad
Validerad; 2015; Nivå 2; 20150914 (andbra)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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