某紧贴已有地下室深基坑支护工程实例分析

Analysis of Design for the Deep Foundation Pit with Adjacent Existing Basement

某深基坑支护工程采用"旋挖桩+支撑"结构,北面紧贴已建的地下室部分,通过在原有地下室侧壁支撑位置增加立柱以及腰梁作为内支撑支座,比已建地下室更深的位置采用土钉墙支护,监测结果表明基坑开挖变形小,对周边环境影响小,支护体系安全可靠,经济合理,可为类似工程设计提供参考。

A deep foundation pit with Pile-strut,close to the basement has been built many years ago,by means of increasing the column and the beana at the basement side wall as the support of the internal support,the deeper position adopt soil nailing wall. The monitoring data show that the deformation of the foundation pit is small,and it has little influence on the surrounding environment. The support system is safe,reliable and economical,which provides reference for the design of similar projects.