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圆柱群是深海海工建筑物的主要承力结构。目前对圆柱群进行的水动力分析大多考虑将圆柱群作为一个整体的情况,即柱群中各柱无相对运动;对于柱间有相对运动圆柱群的研究较少。为此,采用精确代数法研究柱间有相对运动坐底直立圆柱群的绕射-辐射问题。首先开展了柱群中各圆柱做给定单独运动的辐射分析;之后在有入射波浪的情况下,分析了各柱有相对运动圆柱群的绕射-辐射问题;进而求得各圆柱上的水动力、振动幅值等量。作为验证,先将退化情况的结果与已有文献进行了对比。进一步的计算结果表明,在某些波数下,分析中是否考虑柱间相对运动对结果影响较大。
Cylindrical group is the main bearing structure of deep-sea marine structures. At present, most of the hydrodynamic analyzes of cylindrical groups consider the case of cylindrical groups as a whole, that is, there is no relative motion among the columns in the column group, and there are few studies on the cylindrical group with relative motion between the columns. Therefore, the accurate algebraic method is used to study the diffraction and radiation problems of the erected cylindrical group with relative motion between columns. Firstly, the radiation analysis of each cylinder in the column group for a given individual motion was carried out. Then the diffraction and radiation problems of the cylindrical columns with relative motion in each column were analyzed in the case of incident wave. Then the water Power, vibration amplitude equivalent. As a verification, the result of degradation is compared with the existing literature first. Further calculations show that at certain wavenumbers, whether the relative motion between columns is taken into account in the analysis has a greater impact on the result.