【摘要】 任意形状大尺度固定式近海建筑物上波浪荷载的计算是这类建筑物设计时所必须解决的问题。三维表面布源法是解决这个问题的一个有效方法。本文将三维表面布源法用于工程中最常见的具有竖直对称平面的物体上波浪荷载的计算,使得计算量和计算所需的计算机内存大大减少。利用文中所讨论的方法可以方便地在微型计算机上计算具有竖直对称平面、形状较复杂的建筑物在不对称入射波作用下的波浪荷载。如用此方法在大型计算机上计算,可节省大量机时和内存。根据上述方法,用FORTRAN-77计算机语言编写的计算程序WFLG具有表面单元自动剖分功能。本程序的计算结果与弧立圆柱理论解和实际平台结构的三维有限元的计算结果符合很好。WFLG程序已被用于我国第一座钢筋混凝土平台的设计计算。更多还原

【Abstract】 The wave forces on large arbitrarily shaped and fixed offshore structures in the water of finite depth are examined with three-dimensional source distribution method under the assumption of linear diffraction theory. By using the three-dimentional source distribution methon to the structures with vertical symmetric planes, the storage and CPU time of computers can be considerably saved when calculating the wave forces on the structures. It is convenient to calculate the nave forces on such kind of structures with microcomputers by using the formulae in this paper. The computer program WFLG which is written in "FORTRAN-77" language hasthe autoe-element-dividing function. Very few input data are needed when running the program, and the number of input data does not increase when the number of the elements increases for a specified structure. The results computed by the program for some special structures compare well with the analytical and FEM solutions. This program has been used in the design of the first gravity platform in China.更多还原