穿越公路、铁路埋地管道的结构型式为有套管和无套管两种。详细讨论了这两种型式管道的强度、刚度和稳定性问题,给出了计算公式及参数取值,在强度和钢度的验算方面提出了新看法。通过实例分析,认为穿越钢管道在满足规范要求最小壁厚限制时,通常不会发生横截面的弹性失稳,即刚度控制的实质为强度控制。 Crossing the road, the railway buried pipeline structure type with casing and casing without two. The strength, stiffness and stability of these two types of pipelines are discussed in detail. The calculation formulas and parameter values ​​are given, and new opinions on the checking of strength and steel degree are put forward. Through case analysis, it is considered that the elastic instability of the cross section does not usually occur when the minimum thickness of the steel pipe that meets the requirements of the specification is crossed through the steel pipe, that is, the actual strength control of the stiffness control.