Abstract
Background Storage of oil and oil products in cylindrical vertical steel tanks is accompanied by processes of loss of the storage product from evaporation. In order to reduce evaporation losses, the tanks are equipped with floating coatings. In tanks with a fixed roof part, the use of float-type aluminum pontoons as a floating coating is widespread. Based on mathematical modeling using software, a pontoon was developed from aluminum alloys of a float type with a radial arrangement of power profiles. The supporting structure consists of radially arranged power profiles, a bead with a shutter, a support central ring, cylindrical floats and support racks. The pontoon can also be equipped with additional structural elements and equipment. For the manufacture of pontoons corrosion-resistant materials should be used, the main material of the supporting structure of the pontoon - aluminum alloys. The study of strength issues based on a comparison of the characteristics of the supporting frame of pontoons made of aluminum alloys of various structural types indicates the advantages of a radial-type pontoon. Aims and Objectives Determination of the optimal type of connection of structural elements of the pontoon. Analysis of the operation of the circuit during rigid and articulation of the supporting elements of the pontoon based on the calculation of the strength of the pontoon for a tank of 5000 m3. Results Based on the results of experimental and theoretical studies, the structural design of the pontoon was optimized by evaluating the connection of the nodes of the power profiles and the support ring. Based on the calculation of the strength bearing elements swivel is selected.
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