地铁换乘车站复杂深基坑土方开挖技术研究

Research on Earthwork Excavation Technology for Complex Deep Foundation Pit of Subway Transfer Station

以南宁市轨道交通4号线与5号线换乘车站施工为例,分析了地下车站深基坑土方开挖的主要影响因素及重难点,阐述了基坑共槽开挖方案制订的思路。通过确定合理的开挖顺序、出土方法,解决了实施过程中的困难,使车站复杂深基坑土方开挖达到安全、快速、经济的效果,可为类似工程提供经验参考。

Taking the construction of the transfer station of Nanning Rail Transit Line 4 and Line 5 as an example, the main influencing factors and difficulty points of earth excavation of deep foundation pit of the underground station were analyzed, and the idea of making the excavation plan of common groove in foundation pit was expounded. By determining the reasonable excavation sequence and unearthing method, it solves the difficulties in the implementation process and makes the excavation of the complex and deep foundation pit of the station safe, rapid and economical,which can provide reference for similar projects.