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应用壳体稳定理论结合某一工程实例研究了圆形加劲环式钢管和锚筋式钢管的抗外压稳定问题．首先分析了非对称外压对失稳荷载的影响；其次根据壳体稳定分析结果对锚筋式和加劲环式钢管的失稳形态和影响因素进行了分析，并对现有计算公式进行了评述．结果表明，对锚筋式和加劲环式钢管采用本文提出的按壳体稳定理论建立的有限元计算公式是可靠合理的．
The shell stability theory combined with a project case studies the stability of circular stiffener ring pipe and anchor steel pipe against the external pressure. Firstly, the influence of unsymmetrical external pressure on the instability load is analyzed. Secondly, the instability shape and influencing factors of the steel pipe with tendons and stiffeners are analyzed based on the results of shell stability analysis, and the existing calculation formulas are reviewed . The results show that it is reasonable and reasonable to adopt the FEM calculation formula established by the stability theory of the shell proposed in this paper.