Scale-model ridges and interaction with narrow structures, Part 3: Analysis of Ridge Keel Punch Tests

Jaakko Heinonen, Maria Tikanmäki, Eeva Mikkola, Ilkka Perälä, Aleksey Shestov, Knut Hoyland, Evgenii Salganik, Marnix van den Berg, Hongtao Li, Zongyu Jiang, Ase Ervik, Otto Puolakka

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference article in proceedingsScientificvertaisarvioitu

62 Lataukset (Pure)

Abstrakti

An experimental campaign to investigate sea ice ridge interaction with bottom-fixed structures was carried out in the Aalto ice tank in Espoo Finland in August, 2019. The aim was to investigate a) the scaled ridge properties, b) the ice processes during testing and c) the scaling of ridge forces with respect to a cylindrical and conical structures at the water line. This presentation focuses to analyses of ridge keel punch tests. In a punch test, a circular platen of consolidated layer is first cut free from the surrounding ice field. Thereafter, the ice is pushed vertically downwards with a cylindrical indentor to break the underlying keel. The measured load-displacement relationship can be used for the evaluation of the mechanical properties of rubble. Three ice sheets were created and used to build ridges, in which the ridge consolidation temperature and time were varied. All together 24 punch tests were carried out, whereas 14 of them were done for consolidated ridge, six for unconsolidated ridge, three for surrounding level ice and one in the open water to determine the buoyancy load in the indentor. Both the structural tests and punch tests showed clearly, that the ridge strength and load depends strongly on the consolidation.
AlkuperäiskieliEnglanti
OtsikkoProceedings of the 26th International Conference on Port and Ocean Engineering under Arctic Conditions
KustantajaLuleå tekniska universitet
Sivumäärä13
ISBN (elektroninen)9781713841005
TilaJulkaistu - 14 kesäk. 2021
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaInternational Conference on Port and Ocean Engineering under Arctic Conditions
- Online, Moscow, Venäjä
Kesto: 14 kesäk. 202118 kesäk. 2021
Konferenssinumero: 26

Julkaisusarja

NimiProceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions
ISSN (painettu)0376-6756
ISSN (elektroninen)2077-7841

Conference

ConferenceInternational Conference on Port and Ocean Engineering under Arctic Conditions
LyhennettäPOAC
Maa/AlueVenäjä
KaupunkiMoscow
Ajanjakso14/06/202118/06/2021

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