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以公司承建的上海某高层住宅1号楼配套商业用房为例,其基坑采用双层钢筋混凝土水平支撑和SMW工法的围护设计。通过分层分段、盆式开挖、留土护壁、先撑后挖等挖土方法,解决了紧邻已建建筑物地基软弱等不利条件下深基坑开挖的施工技术难题,确保了工程项目的顺利实施。结构的水平位移值、沉降值、倾斜率均小于预警值。
Taking the supporting commercial building of a high-rise residential building No. 1 in Shanghai as an example, the foundation pit adopts the double-layer reinforced concrete horizontal support and the SMW working envelope design. The construction technical problems of deep foundation pit excavation under the unfavorable conditions such as the weakness of the foundation of the already-built buildings are solved through the methods of excavation by stratified section, basin excavation, soil retaining and retaining wall, first support and rear excavation, etc. to ensure that the project The smooth implementation of the project. The horizontal displacement, settlement and slope of the structure are all less than the early warning value.