三峡升船机塔柱施工技术

Construction technology of tower column of Three Gorges Project ship lift

本文介绍了塔柱结构的整体施工程序,并详细分析了土建结构精度控制、金属结构及其埋件精度控制、混凝土温控防裂和安全控制等几个方面的施工重点与难点问题。同时,就塔柱结构在施工过程中采用的施工测量控制技术、薄壁混凝土温控防裂施工技术、高精混凝土连续快速施工技术、金属结构埋件施工技术、高空大跨度横梁结构施工技术等进行了系统的总结。上述施工技术的应用,不仅满足了塔柱高精度的施工要求,保证了塔柱施工的顺利进行,同时也为类似的高精混凝土的施工打下了坚实的基础。

This paper firstly describes the whole construction program of the tower column. Then the im-portant and difficult construction problems have been analyzed, such as the precision control of civil structure, the precision control of metal structures and its embedded parts, concrete temperature control and crack preven-tion, and safety control. At the same time, the construction surveying control technique, the temperature control and crack prevention technique of thin wall concrete, high precision concrete continuous and rapid construction technique, metal structure construction technique, and the construction technique of high altitude and large span beam structure have been made a systemic summary. The application of those construction techniques meets the requirement of high precision construction of the tower column and ensures its smooth construction. Meanwhile, these construction techniques lay a solid foundation for the construction of similar projects.