静压桩施工对邻近地铁隧道变形监测与影响分析

Deformation Monitoring and Influence Analysis of Adjacent Subway Tunnel Static Pressure Pile Construction

近年来,地铁线路周边的商业地块开发热度不减,这些地块的基坑呈现出了“深、大、近、难、险”的发展趋势,在地块施工过程中,对既有的地铁线路隧道进行及时有效的监测显得越来越重要。文章通过地铁小半径曲线隧道监测项目,介绍利用双测站组网自动化监测技术,发现邻近地铁隧道受静压桩挤土效应影响结构发生明显位移的过程,可供类似条件下的工程参考。

In recent years,the development of commercial plots around the subway line is hot,and the foundation pits of these plots show a development trend of "deep,large,near,difficult and dangerous".During the construction of the plots,it is increasingly important to monitor the existing subway line tunnels in a timely and effective manner.Based on the monitoring project of small radius curve tunnel of subway,this paper introduces the process of the obvious displacement of the structure of the adjacent subway tunnel affected by the soil squeezing effect of static pressure piles,which can be used as a reference for similar projects.