武汉光谷多功能地下空间内支撑格构柱补强及换托技术

Reinforcement and Replacement Technology of the Inner SupportLattice Column in the Multi-functional Underground Space of Wuhan Optical Valley

针对多功能地下空间结构施工过程中可能遇到的问题,以全球规模最大的单个地下空间项目——武汉光谷地下空间中的1标段为例,详细介绍了底层地铁结构在上部内支撑不拆除的前提下如何移交轨道单位铺轨。针对轨道路径上的格构柱,项目通过格构柱切割补强及换托等不同技术方案比较,确定最优方案。在保证基坑支撑结构安全的同时顺利移交地铁结构。

In view of the problems that may be encountered in the multi-functional underground space structure, taking the section No.1 in the underground space of Wuhan Optical Valley, the largest single underground space project in the world for instance, aiming at the lattice column in the track path, the project adopts the different technical schemes such as lattice column cutting and reinforcement, and finally determines the optimal scheme. The safety of the foundation excavation support structure is ensured, and the structure of metro is transferred smoothly.