对已有的大直径钢顶管弹塑性分析方法进行了改进和完善,并通过控制管壁截面的可靠指标β来保证“弹塑性分析”的安全度.之后,对软土地段的大直径钢顶管进行了较为全面的弹塑性分析,得出了一些有参考意义的结论,并将本文建议的“弹塑性分析”方法应用于实际工程,取得了较为合理的结果,同时也提出了需要关注的问题. The existing method of elasto-plastic analysis of large diameter steel pipe jacking is improved and perfected, and the safety index of “elasto-plastic analysis” is ensured by controlling the reliable index β of pipe wall cross section. Diameter steel pipe has been more comprehensive elastoplastic analysis, draw some conclusions of reference, and the proposed “elastoplastic analysis” method applied to the actual project, and achieved a more reasonable results, but also Put forward the need to pay attention to the problem.