本文分析了圆形板、环形板破坏图形的充要条件;在圆环板四种基本破坏图形的基础上,提出了两个新的对设计起控制作用的破坏图形;按上述破坏图形推导了圆环板内力计算公式;编制了圆形板弯矩系数及切断半径系数的实用图表。本文研究的主要成果已列入我国烟囱设计规范。 In this paper, the necessary and sufficient conditions for the failure pattern of the circular plate and the annular plate are analyzed. On the basis of the four basic damage patterns of the ring plate, two new damage patterns that control the design are proposed; the damage pattern is deduced according to the above The calculation formula of the internal force of the annular plate; a practical chart of the bending moment coefficient and the cutting radius coefficient of the circular plate is compiled. The main results of this study have been included in the design specifications of China’s chimneys.