本文讨论和研究球壳和圆柱壳组合结构承受内压时的极限荷载。结构为理想刚塑性材料,服从双矩弱作用屈服条件,壳体屈服后仍满足中面直线法假设。对给定结构塑性破坏形式,进行塑性分析和计算,得到了简便极限荷载计算公式和适用范围,所获得的解是完全解。 This article discusses and studies the ultimate load when the combined structure of spherical shell and cylindrical shell is subjected to internal pressure. The structure is an ideal rigid plastic material, obeys the weak-acting yield conditions of double moments, and the shell meets the straight-line hypothesis of the midplane after yielding. For a given structural plastic failure form, the plastic analysis and calculation are carried out to obtain a simple limit load calculation formula and applicable range, and the obtained solution is a complete solution.