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As offshore floating structures continue to grow larger, the rain load of large offshore floating structures under extreme conditions has become one of the focal points of concern for designers. Based on the discrete particle model and the rain load calculation formula, this paper completed the rain load calculation for different wind field and raindrop spectrum combination states of the offshore platform, and the study shows that the rain load caused by fluctuating wind is much more discrete than the raindrop spectrum; the rain load of the offshore platform under the action of fluctuating wind follows Gamma distribution; and the rain load variation caused by time-varying rain field follows normal distribution; when the rainfall intensity R is 800 mm/h, the exceedance probability is 95%, the rain load accounts for 4.65%, and the maximum rain load accounts for 8.07%. The research results help to reveal the influencing factors of rain load on offshore platforms and can provide data support for designers to select rain load reasonably.
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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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