At present,most urban tunnels need to pass through municipal roads,and most of them are constructed by underground excavation method,so the original rock and soil equilibrium state is often de-stroyed,resulting in the surface settlement of municipal roads.The stratum deformation of tunnel is the fo-cus of attention in the construction of underground excavation method.If it is not properly controlled dur-ing construction,the stability of the superstructure will be destroyed,which will affect the safety of the pro-ject.It is analyzed the relationship between excavation and formation deformation from the perspective of the interaction between strata and roadbed,and the relationship between excavation and formation deforma-tion from the perspective of time and space effect.Taking a certain project as the research object,finite el-ement analysis software is used to compare the changes of tunnel stress in two construction sequences by means of software modeling,so as to optimize the tunnel construction sequence and improve the safety of construction projects.
关键词
暗挖地铁隧道/下穿市政道路/地层变形/施工方案
Key words
digging underground subway tunnel/underpass municipal roads/formation deformation/con-struction scheme
维普
万方数据