泰州大桥中间塔采用深水沉井基础与纵向“人”字形钢塔相组合的结构形式，其施工极为复杂。该项目通过前期研究成果，在深水沉井基础施工过程中利用上下游锚墩定位技术，结合信息化实时监控系统，确保了沉井的准确定位和精确着床，同时采用终沉控制措施成功防止了沉井在终沉阶段的突沉、超沉现象。钢塔架设精度高，调整节段少，且在安装过程中结构存在多次体系转换，针对以上特点，采用几何控制的全过程控制理念，将节段制造误差、预拼装线性和架设误差进行统一分析，建立精度管理系统，最终钢塔的架设精度远远优于设计精度。泰州大桥中间塔施工取得了

The middle tower of Taizhou Bridge consists of deepwater caisson foundation and steel tower with herringbone shape along the longitudinal direction. The construction is complex. Based on previous study, using the technology of up-stream and down-stream anchor pier positioning and the system of information real-time monitoring ensures position and implantation. Meanwhile，control measure is used to prevent caisson sinking suddenly and extra-sinking in final stage. Erection accuracy of steel tower is very high, but adjusted segments are few. During the construction, the structure system changes frequently. To the feature, the method of whole process control based on geometric control is used in the project, which analyzed the error of manufacturing segment, linear of pre-assembled segment and erection, and accuracy management system is established uniformly. The final accuracy of erection is better than that designed. Many innovative technologies are obtained in this project, and the key technologies about construction of deepwater caisson , manufacturing and erection of steel tower are formed, which can be referred for other similar projects in the future.

田唯（1980—），男，湖北武汉市人，工程师，主要从事长大桥梁施工建造技术研究