Based on geometrical non-linearity, considering the influence of equivalent axial force ( S0) on the deflection of pipeline, the paper presented the equations with or without anchor blocks at both ends for calculating static and dynamic strengths of aerial crossing pipelines. 基于几何非线性,考虑当量轴向力(S0)对管道挠曲的影响,提出了有或无固定墩单跨无补偿器管道强度计算方程。