讨论斜拉桥几何非线性的解法,重点介绍解法中刚度矩阵的形成、不平衡力的求解以及迭代流程等3个关键问题。在此基础上,以崖门大桥为研究对象,把本文方法应用于该桥结构分析中,得出一些有参考价值的结论,并验证本文方法的可行性。 This paper discusses the solution of geometrical nonlinearity of cable-stayed bridge, and focuses on three key issues in the solution, including the formation of stiffness matrix, the solution of unbalanced force and the iterative process. On this basis, taking Yamen Bridge as the research object, this paper applies the method to structural analysis of the bridge, draws some conclusions with reference value, and verifies the feasibility of the method in this paper.