Author(s): Sergiy B. Sukhorukov; Aleksey V. Marchenko
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Abstract: Construction and design of harbors in coastal zones of Arctic seas is important for the development of infrastructure of Northern regions. Ice action on quay piers can create its damage and influence constructional stability in ice season. In sea areas subjected by tides vertical displacement of the ice influence the formation of ice bustles of quay piers and create periodical forces applied to the piers in upward and downward directions. Relations between adhesion friction between the ice and steel, flexural strength of the ice, pier diameter and tidal amplitude determine ice failure mode by bend, shear or ice sliding along the pier. The capacity of the ice to displace a pier in vertical direction depends on the cohesion between the pier surface and seabed soil. In the present paper the problem about ice action on cylindrical piers is considered taking into account time dependent properties of the friction between the ice and steel rough surfaces studied earlier in the laboratory experiments. The role of incoming flexural-gravity waves on vertical forces applied to the piers is analyzed based on field measurements of wave induced vertical oscillations of the ice in Longyearbyen harbor.
Year: 2010