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筒型基础作为一种新型的基础形式已经广泛的应用于海洋资源的开发。基于近海风电场快速建造的“大尺度筒型基础的浮运拖航”关键技术以及筒型基础作为边际油田开发的基础形式的研究背景,该文对海洋环境荷载作用下筒型基础的运动响应进行了相应的研究和分析。通过引入考虑气垫影响的无因次参数?处理筒内气水界面的非线性边界条件,并基于三维势流理论采用半解析法的特征函数展开和匹配渐进法得到气浮筒型基础结构的横荡、纵摇下辐射运动的基本规律。并以CBF-3-150海上风电复合筒型基础为例,应用上述理论,运用MATLAB编程平台编制计算程序,求解得出该结构的横荡、纵摇水动力系数。
As a new type of foundation, the tubular foundation has been widely used in the development of marine resources. Based on the rapid construction of offshore wind farms, the “floating towing of large-scale tubular foundation” key technology and the basis of the cylindrical foundation as a marginal oilfield development of the basic form of research background, the paper on the role of the marine environment under the load cylinder foundation Motion response was studied and analyzed accordingly. The nonlinear boundary conditions of the gas-water interface in the cylinder are treated by introducing the dimensionless parameter which takes the influence of air cushion into consideration. Based on the three-dimensional potential flow theory, the characteristic function of semi-analytical method is used to expand and match the asymptotic method, , Under the basic laws of radiation movement. Taking CBF-3-150 offshore wind turbine composite tubular foundation as an example, applying the above theory, using MATLAB programming platform to compose the calculation program, and solving the swaying and pitching hydrodynamic coefficients of the structure.