该文以65+108+65m双塔单索面三跨预应力混凝土矮塔斜拉桥为研究背景,运用土木结构详细非线性分析软件Midas/FEA建立索塔及索鞍区域的空间有限元模型,在最大索力情况下,对整个索塔的空间受力及索塔索鞍区域混凝土的局部应力情况进行分析,明确索塔受力的薄弱部位,为矮塔斜拉桥索塔的设计及施工控制提供参考。 Based on the background of 65 + 108 + 65m double-tower single cable plane and three-span prestressed concrete low-rise cable-stayed bridge, the spatial finite element model of cable tower and cable saddle is established by the detailed nonlinear analysis software Midas / FEA of civil engineering structure Under the condition of the maximum cable force, the space force of the entire tower and the local stress of the concrete in the cable saddle area are analyzed, and the weak parts of the cable tower are identified. Construction control for reference.