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对某巨型钢衬钢筋混凝土联合承载蜗壳，采用三维非线性有限元法计算结果表明：当弹性垫层６ｃｍ和垫层材料弹模为２ＭＰａ时，原设计的钢衬为６ｃｍ偏厚，钢衬与座环连接部位应力集中较大；给出了随内水压力增加，埚壳外包混凝土塑性变形和开裂区的发展过程。对上述问题提出了改进措施建议。
The result of a three-dimensional non-linear finite element method shows that when the thickness of the elastic cushion 6cm and the cushion material is 2MPa, the originally designed steel liner is 6cm thick and the steel liner The stress concentration at the connecting part with the seat ring is larger; the development process of the plastic deformation and cracking zone of the shell of the shell is given with the increase of the internal water pressure. Proposed improvements to the above issues.