位于钱塘江入海口的嘉绍大桥为国内首座六塔斜拉桥,桥位处水文条件恶劣。主梁采用分离式钢箱梁,塔区钢箱梁安装困难。针对其结构特点和建设条件提出了几种安装方案,并对多种方案的优劣及适用情况进行了深入比选,最终确定了嘉绍大桥塔区钢箱梁安装施工方案,并在嘉绍大桥建设过程中获得良好的应用效果。 The Jiashao Bridge at the mouth of the Qiantang River is the first viaduct cable-stayed bridge in the country with poor hydrological conditions at the bridge. The main girder using split steel box girder, steel tower girder installation difficulties. According to its structural characteristics and construction conditions, several installation schemes are put forward, and the advantages and disadvantages of various schemes and their application are compared and deeply selected. Finally, the construction scheme of steel box girder in the tower area of ​​Jiashao Bridge is established. Bridge construction process to obtain a good effect.