输送流体、浆体物品的大跨径管道组合拱式跨越结构的侧倾稳定性,与行车拱式桥梁的稳定问题有着原则的区别。迄今,国内外文献均沿用后者的计算理论。本文对此提出了异议,建议了新的计算方法,导引了相应的实用计算公式。结构实验表明,本文公式的误差在10％以内;而现行的按行车拱桥的计算理论所确定的稳定性安全系数 The roll stability of long-span pipeline combination arch span structures for transporting fluid and slurry objects has the principle difference with the stability problem of driving arch bridges. So far, both the domestic and foreign literatures follow the latter’s computational theory. This dissertation puts forward an objection, proposes a new calculation method, and guides the corresponding practical calculation formula. Structural experiments show that the error of the formula in this article is within 10%; while the current stability factor of safety determined by the calculation theory of traffic arch bridge