FEM analysis of induced ground settlement of tunneling side-crossing high-voltage rod foundation considering reinforcement measures

Abstract Taking the actual working conditions of the Wuhan Guanggu 1st/Gaoxin 4th drainage channel project as the research object, Finite Element Method (FEM) is used to analyse the effectiveness of reinforcement measures to control surface settlement deformation around poles during tunnel propulsion. Calculations prove that as the tunnel advances, the displacement around the high-voltage rod gradually increases and tends to stabilize; The numerical simulation study of the combined engineering conditions of different reinforcement measures shows that the pile foundation reinforcement and the pile top beam reinforcement both can effectively reduce the surface settlement, and the reinforcement effect in pile top beam is far greater than that in pile foundation; The numerical results of both the two reinforcement measures involved are compared with the actual monitoring data, and the results are in good agreement. Then the correctness of the numerical model is verified. Therefore, the two reinforcement measures in this area show great effectiveness by studying the four different engineering conditions. The reinforcement measures have certain reference value for related engineering design in this area.