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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 supporting project adopts the structure of “rotary pile excavation + support”, and the north is close to the basement which has been built. By adding columns and waist beams as inner support supports in the side wall support of the original basement, The deeper basement is supported by soil nailing wall. The monitoring results show that the excavation of the foundation pit has small deformation and little impact on the surrounding environment. The supporting system is safe, reliable and economical, which can provide reference for similar engineering design.