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考虑了回填混凝土、围岩的弹塑性、初始地应力及开挖支护引起的二次应力的影响和在内水压力作用下钢衬的弯曲、剪切效应，并将罚函数的思想应用于地下埋藏式压力钢管的非线性有限元强度分析．编制了相应的非线性有限元程序，结合工程实例，通过方案比较得出了对工程设计有参考价值的结论．
Considering the influence of backfill concrete, surrounding rock’s elasto-plasticity, initial geostress and secondary stress caused by excavation and support, and the bending and shearing effect of steel liner under internal water pressure, the penalty function is applied to Nonlinear finite element analysis of underground buried pressure pipe. The corresponding non-linear finite element program is compiled. Based on the engineering examples, the conclusions of the reference value of the engineering design are obtained through the comparison of the schemes.