Dynamic Interaction Between Floating Ice and Offshore Structures

摘要

Attention is directed to the case where ice fails by crushing at the face of the structure. A formulation suitable for investigating the dynamic response of platform systems including floating ice sheets or ice features is developed and applied. Korzhavin's crushing formula is the basis of the proposed model. An unidirectional finite element for modeling dynamic ice-structure interactions is developed. This ice element is incorporated into a general nonlinear dynamic analysis formulation which is applied to three types of problems: the impact of large ice flows against fixed platforms, the response of slender structures subjected to continuous crushing by a uniform ice sheet and the earthquake response of an offshore structure in the presence of floating ice.