地铁下穿创业立交桥桩基托换施工技术研究

在城市轨道交通中，地下工程往往需要穿越上部建筑物，而城市中建筑物大多采用桩基础形式，隧道线路虽可进行局部的优化，但仍受规划和总体线路的限制，这样，进行桩基托换往往是最好的选择方案。以深圳地铁5号线创业路立交桥为例，详细介绍了创业路立交桥桩基托换的设计、三维数值分析、施工工艺、以及施工工程中监测数据的情况，可为类似的地铁施工提供全过程的借鉴。

Study on Technology of Pile Foundation Underpinning Road Overpass in Subway Construction

During the urban rail transit construction , it is inevitable for the underground engineering to un-derpass the upper structures .While most of the construction adopt the pile foundation , though the line planning could be optimized , it is hard to change too much for limitation of the general planning and the general line plan-ning.So pile foundation underpinning is a good program for such constructions .In this paper, Chuangye Road overpass of Shenzhen Metro Line 5 is taken for study , it describes in detail the design , numerical analysis , con-struction techniques and the monitor data of the construction .It could be referenced for other such metro con-struction.