Study on Micro Disturbance Deformation Analysis and Control of Earth Pressure Balance Shield Sidearm Crossing Buildings in Water-rich Soft Soil Stratum

Currently, due to the increasingly tense utilization of urban space, metro construction has become an urgent demand. In order to study the micro disturbance construction of earth pressure balance shield crossing buildings in water-rich soft soil stratum, this paper took the left line tunnel of a certain section of Zhengzhou Metro sidearm crossing a residential building as the engineering background and proposed the control standards for micro disturbance deformation in line with practical projects with a combination of the engineering practice. The disturbance deformation of the residential building and its surrounding surface and the analysis of causes were studied through the measured data obtained from the on-site whole-process monitoring, the three-dimensional numerical model of the whole process of the shield sidearm crossing the building established by the FLAC3D numerical simulation software, and the study method combining on-site monitoring and numerical simulation. Finally, whether the disturbance deformation of the building and its surrounding surface was in line with the micro disturbance deformation was determined based on the evaluation standards for micro disturbance deformation. And the control measures for micro disturbance deformation were proposed, which will provide a reference for the micro disturbance construction similar to the shield crossing buildings in this area.