Design of Subway Shaft Support System in Hard-SoftHeteroge Neous Ground
The characteristics of underground excavation of subway station construction shafts are deep excavation depth,regular wellhead plan,and small scale.in Hard-SoftHeteroge Neous Ground,it is difficult to construct subway shafts using a single support form,and the deformation of the shafts is difficult to control.to this end,using a construction shaft of a underground excavation station under construction in Qingdao Metro as a carrier.Tu Design the Subway Shaft Support System in Hard-SoftHeteroge Neous Ground.according to the surrounding environment and geological conditions of the shaft,The upper soft soil layer of the shaft adopts cast-in-place piles and concrete Annular type-beam,shaft wall method in the bottom hard rock adopes anchor-plate retaining.This support system is the first to be adopted in the Qingdao area.Using Finite Element Analysis to Analyze Vertical Shaft Deformation and Monitoring Data,The results indicate that the construction difficulty of this support system is relatively small,and its economy is good,which has high application and promotion value.in Hard-SoftHeteroge Neous Ground.
Hard-SoftHeteroge Neous Groundsubway shaftsupport systemfinite element analysis
万方数据
维普
