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为了研究海上大尺度复合筒型基础的拖航动力特性,采用水动力学软件MOSES模拟海上风电复合筒型基础结构现场气浮拖航的运动情况.模型采用基础原型尺寸,通过模拟现场海域5和6 m吃水条件下的基础拖航情况,详细分析了复合筒型基础拖缆力、位移、加速度、筒内气压力等相关动力特性因素.同时,通过变换关键变量,分析了不同的拖缆点和波浪条件对基础极限动力特性的影响.结果表明:具有合理分舱的复合筒型基础具有稳定的自浮拖航浮运特性,拖航过程中筒内气体压力变化较小,拖缆点在水线附近拖航阻力最小.复合筒型基础可自浮拖航的特性使其运输施工过程不需要使用大型设备,可大大节约成本,具有很强的竞争性.
In order to study the towing dynamics characteristics of offshore large-scale composite tubular foundations, the hydrodynamics software MOSES was used to simulate the air-floating towing behavior of the offshore wind tunnel composite foundation. The model was based on the prototype size 5, 6 m draft conditions of the basic tow situation, a detailed analysis of the composite tubular base streamer force, displacement, acceleration, cylinder pressure and other related dynamic characteristics of the same time, by changing the key variables, the analysis of different tow points And wave conditions on the ultimate dynamic characteristics of the foundation.The results show that the composite tubular foundation with a reasonable subdivision has a stable floating and floating floatation characteristics and the change of gas pressure in the barrel during towing is small, The towing resistance is the minimum near the water line, and the characteristics of self-propelled towed composite foundation can make it not need to use large-scale equipment in transportation construction process, which can greatly reduce costs and is highly competitive.