以天津泰达广场A,B区裙房及中央广场工程项目施工为工程背景,介绍了深大基坑中央区域通过盆式开挖、继而顺作该区域地下结构,周边地下1层楼板以下结构完成后土方暗挖的施工工艺流程。在实施过程中应用了周边逆作结构楼板土胎模施工技术、土方暗挖技术、钢筋预埋及混凝土浇筑技术等。实践证明,该技术的应用具有缩短工期、经济效益好、对周边环境影响小等优点。 Taking the construction of Podium A and B in Tianjin Tianda Plaza and construction of Central Plaza project as engineering background, the deep excavation in the central area was introduced through basin excavation, and then the underground structure in the area was completed. The structures below 1 floor in the surrounding area were completed After the earthwork excavation of the construction process. Applied in the implementation of the surrounding construction of the inverted floor mold floor mold technology, earthwork excavation technology, steel embedded and concrete pouring technology. Practice has proved that the application of this technology has the advantages of shortening construction period, good economic returns and little impact on the surrounding environment.