【摘要】 以上海中心城区的某一深大基坑工程为实例,在介绍其工程概况、周边环境、地质条件的基础上,分析了项目的重、难点,并围绕基坑的整体分区筹划、支护方案选型设计、土方分块开挖要求等内容进行了重点的介绍分析。现场的实测数据显示,通过合理设计和精心施工,基坑自身变形和周边地铁、保护建筑等的变形均在可控范围,满足对周边环境保护的要求。更多还原

【Abstract】 Taking a deep and large foundation pit engineering in Shanghai central urban area as an example, its general situation, surrounding environment and geological conditions are introduced, and the key and difficult points are analyzed. The analysis of the overall partition planning of the foundation pit, support scheme selection design, earthwork partitioned excavation requirements are focused on. The field measured data show that through reasonable design and careful construction, the deformation of the foundation pit itself and the surrounding subway and protective buildings are within the controllable range, which can meet the requirements of surrounding environmental protection.更多还原