紧邻高铁线深基坑下挂板式支护技术

Hanging Plate Supporting Technology of Deep Foundation Excavation Adjacent High-speed Railway

介绍一种新型基坑支护形式,采用钢筋混凝土板式结构抵挡土压力,依靠混凝土自身特性满足基坑开挖阶段止水挡水要求。施工顺序类似土钉墙,作用机理类似地下连续墙或混凝土板桩。通过与相邻围护结构及基底垫层的连接,满足受力及止水封闭要求。

A new type of foundation excavation supporting forms can resist of the soil pressure by structure of reinforced concrete plate and hold back water by itself characteristics at stage of excavation. Its construction sequence is similar to soil nailing wall,and its mechanism is similar to underground continuous wall or concrete sheet pile. By connection with adjacent enclosure structure and basement cushion,the requirement of stress and water closed is satisfied.