Analysis of heavy floating cranes and features of their operation
| Autor: | Konstantin V. Perepadya Perepadya, Vladilen S. Ignatovich Ignatovich, Anna Valentinovna Kuzmina |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Russian Journal of Water Transport. :68-80 |
| ISSN: | 2713-1866 2713-1858 |
| DOI: | 10.37890/jwt.vi68.204 |
| Popis: | The main characteristics of offshore heavy floating cranes, which are independent navigation without tugs and the performance of cargo operations in open waters with wind and waves, are considered. The safety of navigation in these conditions can be ensured with high seaworthiness and maneuverability by giving the appropriate shape of the bow end of the hull, the minimum windage of the structure, as well as the optimal design of the topside (crane). The requirements for the design and construction of universal heavy sea floating cranes, built after 1966, are analyzed, the operating conditions, depending on the purpose, and the architectural and structural type of floating cranes with a lifting capacity of 100–900 tons are considered. When calculating the strength of the topside, the possibility of the floating crane operating with the maximum load was taken into account when the sea is rough up to three points and the wind is up to five points, taking into account the dynamic and inertial loads arising from rolling in waves, when picking up and breaking the load. In the event of an emergency breakage of the load, the structure of the topside and the boom system must exclude or minimize vibrations caused by the breakage of the load. The results of the calculation of the forces at the breakage of the load must be verified by full-scale tests of floating head cranes, for which the corresponding methods have been developed. The possibility of using the developed structure of the hull and the topside (crane) in the design and construction of modern floating cranes in the production conditions of shipyards is shown. |
| Databáze: | OpenAIRE |
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