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核电站安全壳内的钢衬在机械载荷或热载荷作用下，受到环向压力和轴向压力，过大的压力会导致钢衬的屈曲变形，进而使钢材发生局部破裂，丧失其限制放射性物质泄漏的作用。为研究锚固于核电站重要设施安全壳混凝土壁上的圆完环在环向压力作用下的屈曲问题，考虑到一般大径厚比的壳环其最大屈曲挠度大于其厚度，应用非线性大挠度壳环方程，分析了锚固钢材壳环的局部屈曲和全域屈曲的后屈曲性态，获得了完整的后屈曲平衡路径，讨论了钢衬壁厚和锚固间距对屈曲性态的影响。结果指出，增大钢衬厚度、减小锚固间距能大大提高钢衬的承载能力，且试验结果说明理论分析是可行的。
Under the action of mechanical load or thermal load, the steel liner in the containment of nuclear power plant is subjected to the circumferential pressure and axial pressure. Excessive pressure will lead to the buckling deformation of the steel liner, which in turn will cause partial rupture of the steel and will not limit its leakage of radioactive material Role. In order to study the buckling problem of circular ring anchored on the concrete containment wall of nuclear power station important equipment under cyclic pressure, considering that the maximum buckling deflection of shell ring with large diameter-thickness ratio is larger than its thickness, Ring equation was used to analyze the local buckling and global buckling post-buckling behavior of the anchoring steel shell ring. The complete post-buckling equilibrium path was obtained. The influence of steel liner wall thickness and anchor spacing on buckling behavior was discussed. The results show that increasing the thickness of the steel lining and reducing the anchorage distance can greatly increase the bearing capacity of the steel lining, and the experimental results show that the theoretical analysis is feasible.