工作水深对浮式平台波浪砰击影响的敏感性分析

发布时间：2018-04-12 22:36

本文选题：半潜式平台 + 工作水深　；参考：《上海交通大学学报》2017年04期

【摘要】：运用风洞和水池试验结果修正后的数值模型,同时考虑平台承受的风、浪、流环境载荷,及全尺度锚泊系统,以一典型半潜式平台为例,利用ANSYS-AQWA软件对半潜式平台波浪砰击次数和砰击载荷进行了非线性数值分析.在300、400和500m工作水深,45°、90°和180°3个载荷方向上建立9个工况,以及每个工况下的10个子工况,利用挪威船级社规范,研究了工作水深对平台的波浪砰击次数和砰击载荷影响的敏感性.针对各工况中的10个子工况结果,以90%的Gumble分布值作为最终的平台气隙的结果.通过数值模拟研究表明:相同的环境载荷、锚链类型和预紧力的情况下,平台的工作水深对平台气隙和波浪砰击的影响非常敏感.因此,在平台设计过程中应充分考虑工作水深对平台气隙和波浪砰击的影响.
[Abstract]:Using the modified numerical model of wind tunnel and tank test results, taking into account the wind, wave, current environment load and full-scale anchoring system, a typical semi-submersible platform is taken as an example.The nonlinear numerical analysis of wave slamming number and slamming load of semi-submersible platform is carried out by using ANSYS-AQWA software.The sensitivity of the working depth to the wave slamming times and slamming loads of the platform was studied by using the Norse Classification Society (Norse Classification Society) code. Nine working conditions were established in the 300400 and 500m working water depths in the three load directions of 45 掳, 90 掳and 180 掳, as well as 10 sub-working conditions under each working condition, and the sensitivity of the working water depth to the wave slamming times and slamming loads of the platform was studied.According to the results of 10 sub-working conditions, 90% Gumble distribution is taken as the final result of the platform air gap.The numerical simulation results show that the water depth of the platform is very sensitive to the air gap and wave slamming under the same ambient load, anchor chain type and preload.Therefore, the influence of water depth on air gap and wave slamming should be taken into account in the design of platform.
【作者单位】：江苏科技大学船海学院;上海交通大学高新船舶与深海开发装备协同创新中心;
【基金】：国家自然科学基金资助项目(51579122,51479115)
【分类号】：P751;TE951

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