南沙中心医院二期后续基坑设计与施工

Design and Construction of Phase Ⅱ Subsequent Foundation Pit of Nansha Central Hospital

广州南沙区存在较厚淤泥层,基岩为花岗岩,二者物理力学性质差别较大,给基坑设计与施工带来了一定的难度。南沙中心医院二期后续基坑项目临近山体,地层起伏较大,根据地质特点和基坑深度、形状和周边环境等采取了多种支护方式,并针对软土和岩层的施工采取有效技术措施,配合信息化施工,使基坑施工获得成功,对类似深基坑项目有一定参考作用。

There are thick silt in the Nansha district of Guangzhou,and the bedrock is granite. The physical and mechanical properties of the two layers are different,design and construction of deep foundation pit become difficult. Nansha Central Hospital phase II subsequent foundation pit near the mountain,layers ups and downs. According to different geological conditions,foundation pit excavation depth,the shape of foundation pit and the surrounding environment,to take a variety of support methods. Effective construction technical measures for soft silt and rock,and design adjustment, successful excavation of the foundation pit can offer a reference for similar engineering.