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随着地下连续墙在大型深基坑工程中的广泛应用,某大厦3层地下室深基坑支护工程实例,介绍地下连续墙(兼作地下室永久外墙,即“二墙合一”技术)在粉砂土地基中的应用情况。文中提出了考虑分步开挖的地连墙设计计算方法,介绍了本工程在地连墙与地下室主体结构之间连接的构造做法。
With the continuous application of underground continuous walls in large-scale deep foundation pit projects and the example of deep foundation pit supporting project in the basement of 3 buildings of a building, this paper introduces the underground continuous wall (also used as the permanent external wall in the basement) ) In the silt in the foundation of the application. In this paper, the design and calculation method of ground continuous wall considering step-by-step excavation is proposed, and the construction practice of connecting the ground-connected wall to the main body structure of basement is introduced.