大型半潜船舱段有限元工况设计研究

Research on Working Condition Design of Cabin Finite Element for Large-Scale Semi-Submersible Vessel

半潜船作为特种运输船舶,为实现其运输能力,相较于油船、散货船和集装箱船等典型运输船,具有独特的船型特点。由于大型半潜船运输货物复杂多样,故船级社目前对于半潜船并无明确的计算工况要求。文章对大型半潜船的甲板设计载荷和工况组合进行研究,总结了大型半潜船甲板载荷和工况设计的基本思路,并提出典型的设计工况需考虑的问题,以保证工况设计既能满足船舶的典型装载需要,又不会因过于保守而影响半潜船构件设计以及船舶的载货指标。

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 semisubmersible 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.