The 20th and 21st joint COTA International Conference of Transportation Professionals (CICTP 2020-21)

Shield construction will cause ground disturbance, and then cause the settlement of surrounding ground and adjacent buildings, which brings great challenges to the stability of excavation face and the safety of surrounding buildings and facilities. The maximum ground settlement is related to the corresponding ground loss rate, and the ground settlement can be controlled by controlling the ground loss rate. However, in the actual engineering, we should not only pay attention to the ground settlement, but also pay attention to the deformation of the surrounding structures. Based on the background of Maglev crossing Shanghai Metro Line 13, PLAXIS 2D model is established to calculate the ground settlement and structure settlement under different ground loss rates. Combined with peck formula, the relationship between ground loss rate, ground settlement and pile foundation settlement is analyzed by comparing the modeling calculation results with the analytical results of the formula.

CICTP