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基坑工程主要包括基坑支护体系设计与施工和土方开挖,是一项综合性很强的系统工程,不仅涉及基坑支护结构与土体的相互作用问题,还涉及强度、变形与稳定问题。天津某地铁基坑围护结构,基坑主体以地连墙结构形式为主,附属结构为SMW工法桩形式,对天津地铁基坑围护结构中SMW工法桩的施工工艺和质量控制进行分析。
The foundation pit project mainly includes the design and construction of foundation pit support system and excavation of earthwork. It is a comprehensive and systematic project that involves not only the interaction between the foundation pit support structure and soil, but also the strength, deformation and Stability issues. In Tianjin, the construction of foundation pit retaining structure of a subway and the main body of the foundation pit are mainly of the form of continuous wall with ground, and the subsidiary structure is the form of SMW working method pile. The construction technology and quality control of the SMW method pile in the retaining structure of the foundation pit of Tianjin Metro are analyzed.