At the present time Russian and foreign normative documents consider loads caused by moving ice fields as dynamic loads on offshore fixed structures. Design loads are presented in the form of contact pressure functions versus ice field speed, ice thickness and physical-mechanical properties, contact area. These functions are obtained based on processing results of multiple full scale tests and model experimental studies.
The paper considers modern approaches for calculation of loads under dynamic offshore fixed structure interaction with drifting ice fields and ice formations. Effects of structural shell plating and framing compliance, as well as structural dynamical characteristics as a whole on ice load values are considered.