海洋石油平台模型导管架异面直线相关参数的计算

管型构件由于刚度大、重量轻、制造容易等优点 ,被广泛应用到海洋石油平台的导管架结构设计中。但管型构件相交时形成的马鞍口及预留焊接坡口计算十分复杂 ,以往用作图法提取相邻管型构件轴线间特征参数 ,手工放样 ,不但工序复杂工作量大 ,而且容易出错。文中利用向量及矩阵公式 ,推导出了计算异面直线间夹角、最短距离及最短距离处点的坐标的公式。只要将从每个直线上提取的任意 2点的坐标输入到用这些公式及马鞍口计算公式编成的计算机程序中 ,就可快速准确地计算出管型构件的所有数据。

The calculation of relevant parameters of noncoplanar lines for offshore platform jacket model

The tubular members are applied widely in the design and fabrication of jacket structure of offshore platform because of their great rigidity, light weight and easy fabrication, but the calculations of saddle and weld bevel at joint of tubular members are very complicated and time_consuming, if they are based on the hand lofting and plotting. This paper presents the formulas for calculation of relevant parameters of noncoplanar lines in offshore platform model and the process of deriving. If any two different point coordinators on each line are put into the software developed from the formulas of noncoplanar lines and saddle, all data of tubular members can be obtained fast and accurately.