地铁海珠广场车站深基坑支护结构设计

地铁海珠广场车站基坑深达24.5m,所处地层十分复杂,施工难度大,基坑支护要求高.本文介绍了该地铁车站深基坑支护结构的选择原则以及地下连续墙和钢管支撑设计要点;对半土半岩地层地下连续墙插入深度进行了探讨;提出了钢管支撑杆件标准化和制作、安装、维修一体化的构想.

Design of Deep Fundation Pit Support Structure of Haizhu Plaza Subway Station

The foundation pit of Haizhu Plaza Subway Station is 24^5m,and the stratum there is very complicated,so the construction is difficult to carry out and the requirement of foundation pit support is strict.In this article,the author introduces the selection principle of the deep foundation pit support structure of the subway station,and key design points of underground continuous wall and steel pipe support,and discusses the insert depth of underground continuous wall into the soil|rock compound stratum.He also provides a conception of standardization of steel pipe components and integrated sequence of manufacturing,installing and maintenance.