紧邻在建地道及地铁运行区间的超大深基坑设计与施工  

Design and Construction Technology of Super-large Deep Foundation Pit Next to Construction Tunnel and Metro Operation Section

作　　者：顾欢 GU Huan(Shanghai Foundation Engineering Group Co., Ltd., Shanghai 200002, China)

机构地区：[1]上海市基础工程集团有限公司

出　　处：《建筑施工》2019年第9期1610-1612,共3页Building Construction

摘　　要：为控制超大深基坑施工中的土体位移变形,同时为降低开挖风险,考虑采用分坑开挖方法,以确保基坑及周边重要保护对象的安全。通过上海某紧邻在建地道及地铁运行区间的超大深基坑设计与施工实践,验证了分坑施工对基坑位移变形的控制作用,同时也优化了与建筑结构施工的衔接,于工期与造价有利。其经验可供类似项目借鉴。To control the displacement and deformation of soil in the construction of a super-large deep foundation pit, and to reduce the risk of excavation, the method of pit-dividing excavation is considered to ensure the safety of the foundation pit and the important protected objects around it. Through the design and construction practice of a super- large deep foundation pit adjacent to the construction tunnel and subway operation section in Shanghai, the control effect of pit-dividing construction on the displacement and deformation of foundation pit is verified, and the structural construction connection is optimized, which is beneficial to the construction period and cost. Its experience can provide a reference for similar projects.

关 键 词：超大深基坑 变形控制 分坑施工 跟踪注浆 

分 类 号：TU753[建筑科学—建筑技术科学]