TBM隧道穿越既有桥梁的桥墩托换施工技术分析

Bridge Pier Replacement Construction Technology of TBM Tunnel Crossing Existing Bridge

为了解决新建地铁隧道与既有桥梁桥墩相冲突的问题,深圳地铁六号线民乐停车场出入线TBM隧道工程通过主动托换技术来处理,托换之后两者都能正常工作,取得了预期的效果。文中通过此工程实例,对桥墩主动托换的施工过程中的一些具体施工步骤进行详细介绍,以期对其他工程进行指导。

In order to solve the problem of conflict between the new subway tunnel and the existing bridge,the TBM tunneling project of Minle Parking lot of Shenzhen Metro Line 6 solved the problem by adopting the active supporting technology.After the bridge pier replacement construction technology,both of them worked normally and achieved the expected result,this paper introduces in details some specific methods of monitoring and measuring in the construction process of bridge pier active supporting project through this project example,so as to provide guidance for other projects.