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本文提出了均匀外压下的由圆环板正交连接的双层变厚薄壁圆柱壳的整体强度解析计算方法。利用圆环板与内、外圆柱壳正交连接的变形协调条件 ,把每跨双层壳作为整体 ,建立双层圆柱壳段的平衡方程。运用相关矩阵分析手段和相邻壳段的连续条件 ,将壳段平衡方程组集成待定参数的总体方程。从壳体封端的边界条件出发 ,计入不同规格的环肋、纵筋、中间支骨、圆环板及其径向筋、周向筋等构件的刚度 ,囊括了结构纵向上的全部性能。该方法可以准确、简便地求解从单层壳到双层壳各跨段任何部位、构件的挠度和应力 ,并捕捉结构的薄弱部位
In this paper, an analytical solution to the global strength of double-walled thin-wall thin-walled cylindrical shells connected by circular plates under uniform external pressure is proposed. Based on the deformation coordination of the circular plate and the orthogonal connection of the inner and outer cylindrical shells, the equilibrium equation of the double cylindrical shell is established for each span of the double shells as a whole. By using the correlation matrix analysis method and the continuous conditions of the adjacent shell segments, the shell equations are integrated into the overall equations of the parameters to be determined. Based on the boundary conditions of the end caps of the shell, the stiffness of the ribs, longitudinal ribs, middle bones, circular plate, radial ribs and circumferential ribs of different specifications are included and the overall performance of the structure in longitudinal direction is included. The method can accurately and simply solve the deflection and stress of any part of the span from the single-layer shell to the double-shell, and capture the weak parts of the structure