海洋平台对称K型管节点的局部柔度及其参数公式

Local Joint Flexibility And Its Parametric Formulas for Symmetric Tubular K Joints of Offshore Platforms

将半解析法应用于海洋平台对称K型管节点局部柔度的计算,为验证方法的准确性及可靠性,首先将在轴力和面内弯矩作用下的T 型和Y 型管节点局部柔度的计算结果与国外所有的参数公式进行了比较.在此基础上.用半解析法计算了一系列对称K型管节点的局部柔度矩阵,并通过对计算结果的回归分析得出了局部柔度矩阵中5个独立元素的参数公式.当海洋平台总体结构分析要求计及管节点局部柔度时,本文的参数公式可用来计算对称K型管节点的局部柔度矩阵.

The Semi-Analytical Method is used in this paper to determine thelocal joint flexibility of tubular K jojnts with symmetric configuration onoffshore platforms.Local joint flexibility of T and Y joints under axial forceand inplane bending moment are calculated and verified by comparing withthose evaluated by the existing formulas.A series of K joints with symmetsicconfiguration is calculated and the local joint flexibility matrices are obtain-ed.Parametric formulas to evaluate five independent elements in the localjoint flexibility matrix of K joints with symmetric configuration are derivedby regression of the data obtained in the calculations.The formulas arerecommended to predict the local joint flexibility in the global analysis ofoffshore platforms when joint flexibility is considered.