深基坑换撑体系在南京国际博览中心三期项目的应用

Application of Deep Foundation Pit Support System in Third Phase of Nanjing International Expo Center

在深基坑支护设计采用内支撑体系的地下室结构施工过程中,施工到一定程度时需要拆除临时性的内支撑体系才可以继续进行下一步的施工工序。基坑施工中的换撑工作指的是采取一定的措施将基坑变形应力通过传力措施,将地下室结构在内支撑体系拆除后作为新的支撑结构,保持基坑稳定,实现支护变形内力的传导和再分配。

In the construction process of basement structure with inner support system in deep foundation pit support design,the temporary internal support system needs to be removed when the construction reaches a certain level before the next construction process can be continued.The work of changing the foundation pit refers to taking certain measures to pass the deformation stress of the foundation pit through the force transmission measures,and the basement structure is removed as the new support structure to maintain the stability of the foundation pit and realize the internal force of the support deformation.Conduction and redistribution.