南沙某工程基坑支护设计关键技术分析

Technology Analysis of Foundation Pit Design of a Project in Nansha

南沙某工程基坑支护项目位于广州市南沙区,毗邻珠江出海口,场地软土深厚,周边条件复杂,工期紧张。该项目通过双排桩+栈桥支撑的方式,提出栈桥支撑及双排桩盖板多功能使用等一系列方案,解决了基于紧迫工期条件下深厚淤泥及复杂条件下深大基坑设计及施工等一系列难题,项目具有较高的工程效益及环保效益。通过该项目的关键技术分析,以期对类似深大基坑项目的设计及施工提供借鉴。

The foundation pit support project of Nansha Project is located in Nansha District,Guangzhou City,adjacent to the Pearl River estuary. Based on the conditions of deep soft soil,complex surrounding conditions and tight schedule through a double-row pile ＋ trestle support method,a series of solutions are proposed such as trestle support and double-row pile cover multi-purpose use,and the design and construction of deep foundation pits in deep silt and complex conditions under tight schedule conditions are solved. A series of problems make the project have higher engineering benefits and environmental benefits. Through the technical analysis of the project,it is expected to provide useful help and reference for the design and construction of similar deep foundation pit projects.