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With the continuous development of large-scale offshore floating structures, the rain load of large-scale offshore floating structures in extreme environment has become one of the focus issues of designers. Based on the discrete particle model, the motion prediction of wind driven rain field was made and the distribution law of spatial characteristic parameters of rain field was quantified. The calculation formula of structural rain load was deduced, and the rain load prediction of offshore platform under different wind speed and rainfall intensity combination conditions was completed. The research results show that the rain load of offshore platforms under the action of DNV wind profile and Davenport wind spectrum follows Gamma distribution. Compared to the average wind load, when the rainfall intensity R is 800 mm/h, the significant value of rain load accounts for 5.07%, and the maximum value accounts for 8.87%; when the rainfall intensity R is 20 mm/h, the significant value of rain load accounts for 0.36%, and the maximum value accounts for 0.6%. The research results of this paper can provide guidance for the design of offshore structures and their mooring systems.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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