DOI: 10. 7672 / sgjs2026010036
Due to the needs of rail transit planning and development, the cases of subway tunnelscrossing residential building complexes are increasing. The finite element model of the whole process ofshield crossing was established by ZSoil. The variation curve of the surface settlement trough wascalculated and compared with the field data. The validity of the finite element model was verified. Theoverall deformation of the regional building and the stratum was analyzed, and the influence range of thedouble⁃line shield crossing on the surface settlement was explored. The results indicate that after thedouble⁃line crossing, the surface subsidence is asymmetrically distributed. The strong⁃influence area iswithin 30 meters from the crossing center, the weak⁃influence area is within 30 to 45 meters, and thenon⁃influence area is above 45 meters. Different reinforcement measures should be adopted for differentdegrees of affected areas. Houses and buildings are greatly affected by the initial crossing tunnel and lessaffected by the subsequent crossing tunnel. The influence of adjacent shield crossing on buildingconstruction is greater than that of far shield. When the bottom plate of the house is a rigid body, thenormal line of the damage surface of the house gradually points to the midpoint of the shield tunnelingposition with the passage of the tunnel. The torsion of the weak floor caused by the settlement of the oldhouses has a great impact on the old houses. The maximum local inclination angle of the old house floorafter surface deformation gradually increases with shield tunneling.