The paper presents the model of ice loads and loading regimes for offshore structures. The approach is based on the numerical modulating of parameters distribution function of the ice regime and simulation of all possible ice cases characterized by random combination of input parameters. For each situation the calculation of the ice loads is made that describes the process of ice brealdng against the structm'e and scenario of motion development of separate ice floes. The results of numerical modulating and simulation of all design situations for the whole period of operation of the IRP (ice-resistant platform) establish the probable characteristics of ice loads and number of loading cycles. The numerical experiments for different structure sizes, as well as various directions of ice field impact have been carried out to study the efficiency of tile designed model simulating the drifting ice fields/structure interaction. Results include: the ice load distribution, F×f(n), number of loading cycles, n, and penetration time, -r. The obtained results also include the following: rose of number of loading cycles, ice load rose, rose of loading re, me and rose of total number of loading cycles for the ice-resistant platform "Molikpaq".
The maior factor influencing the reliability of IRP is the ice regime of surrounding sea and, as a result, ice loads and impacts on the structure. Therefore, reliable definition of ice loads acting on offshore structures is an extremely urgent econolnic problem. On one hand, an underestilnatiol~ of loads is completely unacceptable since it can result in considerable material and economic damage, on the other hand, their overestimation increases costs of structure and decreases ihe capital recovery of oil field development. It is necessary to note, that many problems of engineering and construction or" fieezing seas offshore structures the remain open.
