复杂水文条件下深基坑支护及地下水控制技术分析

Analysis of Deep Foundation Pit Support and Groundwater Control Technology Under Complex Hydrological Conditions

依据北京市通州区某基坑支护与地下水控制工程设计实例,介绍基坑支护影响范围内地下水条件复杂的情况下基坑支护及地下水控制的设计要点,重点对止水帷幕设计方式进行讨论,通过工程技术分析、经济比选,确定最优设计方案,并根据结构设计条件结合基坑支护设计方案提出主动抗浮的概念设计,为今后类似工程设计提供参考和借鉴。

This paper introduces the design key points of deep foundation pit support and groundwater control under complex hydrological conditions,which is combined with a design example of a deep foundation pit support and groundwater control project in Tongzhou District,Beijing,and focus on the discussion on the design of the water-stop curtain.It determines the optimal design scheme through engineering technology analysis and economic comparison.Combined with the structural design conditions and the design scheme of foundation pit support,the active anti-float method is explored and applied.It can provide reference for similar projects in the future.