钢管混凝土系杆拱桥因其造型美观受力合理得到了广泛应用,文章主要介绍了钢管混凝土系杆拱桥的失稳类型及其影响因素,对其失稳状态进行分析。结合实际工程,采用有限元软件对其进行建模分析,验算其结构的稳定性。 The concrete-filled steel tube tied arch bridge is widely used due to its attractive appearance and beauty. The article mainly introduces the instability type and its influencing factors of the concrete-filled steel tube tied arch bridge, and analyzes its instability. Combined with the actual project, using finite element software modeling analysis, checking the stability of its structure.