悬链线古桥的模态分析及加固研究

Research on Modal Analysis and Reinforcement of Old Catenary Bridge

浙江绍兴嵊州的玉成桥为典型的悬链线结构桥梁,文章以其为研究对象,运用有限元软件ANSYS对其全桥结构进行弹性阶段的模态分析,获取结构的整体动力学性能,得到了其前十阶的振型和频率以及基频;同时针对该桥局部结构损坏情况,提出联合运用外粘钢板法和外粘贴碳纤维布法及压力灌浆的方式对该桥的关键部位进行维修的加固方案。

Shengzhou Yucheng Bridge of Shaoxing, Zhejiang is a typical catenary structure bridge, based on such research object, the article used the finite element software ANSYSto conduct the modal analysis on the elastic phase of its full-bridge structure, obtained the overall dynamic performance of the structure, and obtained ten vibration modes and frequency and baseband;and based on the local structural damage of this bridge, the article proposed the joint use of external adhesive steel method and external adhesive carbon fibercloth method and pressure grouting method as the reinforcement program to repair the key parts of this bridge.