关键词: 大型半潜船, 甲板载荷确定, 工况设计, 舱段有限元, 结构设计

Abstract: The semi-submersible vessels, as special transport ships, have unique characteristics in order to achieve their transport capacity by comparison with the typical transport ships, such as oil tankers, bulk carriers and container ships. The conventional transport ships have specific target cargo and have been given clear design combinations of working conditions (loading in alternate hold, etc.) by classification societies. There are no definite requirements of the calculated the working conditions for submersible vessels from the classification societies because of the complexity and variety of the cargos transported by the large-scale submersible vessels. The design loads of the deck and the combinations of the working conditions are studied for the large-scale semi-submersible vessels. The basic design idea of the deck loads and working conditions are also summarized for the large-scale semi-submersible vessels. The issues to be considered under the typical design working conditions are presented to ensure that the design of working conditions not only covers the typical loading requirements of the ship, but also is not too conservative, which will in turn affect the member design and the cargo loading capacity of the semi-submersible vessels.

Key words: large-scale semi-submersible vessel, deck loading determination, working condition design, cabin finite element, structural design