石湾特大桥矮塔索鞍区局部应力分析

Local stress analysis of saddle structures in Shiwan Bridge

以石湾特大桥为研究对象,采用空间有限元方法计算了矮塔斜拉桥索鞍区的受力情况,将施工阶段最大悬臂状态下的索力按照等效简化荷载及边界条件对其加载,分析了桥塔索鞍区混凝土和管道的受力特点,并对桥塔索鞍区的设计提出了建议。

Based on the design drawings of Shiwan Bridge, the paper discussed the different stress effect on the saddle of low tower cable-stayed bridges by using the space FEM. By transforming the cable fore of the largest state of the construction state into the simplified equivalent load and boundary conditions, and loading on the model, the force characteristics of concrete and pipe of the bridge saddle were analyzed and suggestions on the design of the bridge saddle were provided.