车站竖井开挖对周边建筑物的安全性研究

Research on the Impact of Shaft Excavation in the Station to the Safety of Surrounding Buildings

洞桩法施工先期,首先通过竖井横通道开挖,然后在横通道中进行导洞开挖。然而竖井施工对临近建筑物沉降存在一定影响。基于此,该文以沈阳地铁3号线三好街站为工程背景,运用Midas GTS Nx软件进行三维模型建立,着重研究分析了建筑物四角在基坑开挖过程中的沉降现象,得到基坑附近建筑物的沉降规律,以期为同类基坑开挖工程提供参考。

In the early stage of the PBA method,the transverse passage of the shaft is excavated first,and then the guide hole is excavated in the transverse passage.However,the construction of the shaft has certain influence on the settlement of adjacent buildings.Based on this,this paper takes the Sanhaojie Station of Shenyang Subway Line 3 as the engineering background,uses Midas GTS Nx software to establish a three-dimensional model,focuses on the research and analysis of the settlement phenomenon of building corners in the process of foundation pit excavation,and obtains the settlement law of buildings near the foundation pit,in order to provide a reference for similar foundation pit excavation projects.