Model Test Study on Ice Induced Vibration of A Compliant Conical Structure

1.Introduction Inthedesignofoceanengineeringstructuresforcoldregioncountries,iceloadsarealwaysthe controlloads,andthedesignofice resistingstructuresisoneoftheimportantdesignaspects.Fornat uralseaice,theflexuralstrengthisalwaysonethirdofthecompressivestrength.Soconicalstructures thatcouldinducethebendingfailureoficesheetsarewidelyusedinthedesignsofice resistingstruc tures.Forexample,theplatformKullukintheBeaufortSeaisaninvertedconicalstructure,andan upward downwardbendingconeisusedonplatformJ…

Model Test Study on Ice Induced Vibration of A Compliant Conical Structure

The problem of ice induced vibration is common to ocean engineering of cold region countries. To study the ice induced vibration of a compliant conical structure, a series of model tests have been performed and some breakthrough progresses made. The ice sheet before the compliant conical structure is found to fail by two-time breaking in the tests. The process of two-time breaking behaves in two modes, and the general control of the ice and structural conditions determine the mode in which the ice force would behave. Two dynamic ice force functions are established respectively for the two modes of two-time breaking process in this paper. The numerical simulation results are in good agreement with the measured results, indicating that the dynamic ice force functions given in this paper can fully reflect the real situation of the dynamic ice force on a compliant conical structure.