敏感环境及复杂地质条件下深基坑支护工程设计

以周围环境敏感和地质条件复杂的重庆江北嘴中央商务区深基坑工程为背景,对比分析了深基坑常用支护结构的优缺点,有针对性地确定了该深基坑工程的支护方案并进行了支护设计,解决了支护设计中双排桩和止水帷幕两个关键技术。监测结果表明:基坑支护设计有效地保证了基坑工程自身安全和邻近排水箱涵和市政道路的安全。

Design of Deep Foundation Pit Support Engineering in Sensitive Environment and Complicated Geological Conditions

Tacking a deep foundation pit in Chongqing Jiangbeizui CBD that is in sensitive environment and with complicated geological conditions as background, the comparative analysis is made on advantages and disadvantages of common support structures for deep foundation pit; the supporting scheme for the deep foundation pit is determined, the support design is made and two key technologies of double-row pile and waterproof curtain in the support design are put forward. The monitoring results show that the foundation pit support design can effectively protect the safety of foundation pit engineering as well as the safety of adjacent drainage box culvert and municipal roads.