上海市某工程深基坑设计与施工控制研究
Study on Design and Construction Control of Deep Foundation Pit of a Project in Shanghai

地下水层不仅对深基坑支护工程的设计与施工影响明显，也影响着施工场地周边建筑物、道路及设施管道等的防护措施布置。本文以上海市中心城区某工程深基坑为例，设计分析了不隔断承压水层对周边环境影响。在施工过程中采取了地下连续墙隔断承压水、连续墙接头采用H型钢接头、坑外双液注浆等加强措施，减少深基坑施工对周边环境影响，结论和措施可供类似工程项目借鉴。
The underground water layer not only has an obvious impact on the design and construction of deep foundation pit support engineering, but also affects the layout of protective measures for buildings, roads, facilities and pipelines around the construction site. Taking a deep foundation pit of a project in the central urban area of Shanghai as an example, this paper designs and analyzes the impact of uninterrupted confined water layer on the surrounding environment. In the construction process, strengthening measures such as diaphragm wall isolating confined water, H-shaped steel joint for diaphragm wall joint and double liquid grouting outside the pit are taken to reduce the impact of deep foundation pit construction on the surrounding environment. The conclusions and measures can be used for reference for similar projects.