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To address the issues of excessive structural redundancy, severe ice debris accumulation, and strong ice-induced vibrations of traditional jacket platform cone structures, a novel jacket platform cone structure design is proposed. This design aims to reduce structural damage to jacket platforms caused by ice accumulation and ice-induced vibrations. Using the JZ20-2NW single-pile leg platform as the research object, the DEM-FEM coupling method based on LS-DYNA software was employed to simulate the interaction between sea ice and both traditional and novel cone structures. A comparative analysis was conducted on ice failure modes, ice loads, and the platform's ice-induced vibration responses and structural responses. The results indicate that the novel cone structure can effectively inhibit ice debris accumulation after climbing, improve ice removal efficiency, decrease ice loads, reduce the ice-induced vibrations of the platform, and improve the safety performance of the cone structure. The study shows that the innovative cone structure demonstrates significant advantages in improving the ice-resistant performance of jacket platforms, providing a theoretical basis for optimizing platform structures in ice regions.
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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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