Abstract:

The ground surface settlement induced by shield tunneling of Metro works is studied on basis of the monitoring results and 3D FEM simulation. The scope of the longitudinal ground surface settlement induced by shield tunneling and the rule of the lateral ground surface settlement are determined. 3D FEM model is established on basis of the actual ground parameters, construction parameters and ground surface settlement data by means of ABAQUS program. The simulated values are compared with the measured values, which indicates that the simulation results are satisfactory. The measured settlement values are within the allowance scope and the simulated values agree well with the measured values. The paper can be served as reference for the prediction of the ground surface settlement of other works in the future.

Key words: ground surface settlement, shield tunneling, monitoring, 3D FEM