Analysis on influence of shield machine lifting on excavation during tunnel construction

Shield machine lifting is an important link in shield construction methods, due to the characteristics of large and overweight, which become one of the risk factors during shield construction. The excavation have been analysis and monitoring during shield machine lifting, the deformation of continuous wall, the axial force and deformation of supporting shaft had been monitored during the shield machine lifting, which is match the numerical analysis date. The results show that the excavation is safe during the process of shield machine uplifting. The paper results can provide references for similar engineering. © 2015 ejge.