Analysis of Deformation Characteristics of Super Deep Pit Excavation in Soft Soil Under Complex Conditions

Taking the foundation pit of a city station in an ancient river sedimentation soft soil area as a case study, the deformation law of the retaining wall was analyzed in areas such as different foundation pit widths, different retaining depths, reinforcement areas for entrance and exit tunnels, and transfer sections based on the characteristics of missing ⑥ layer of silty clay, multiple zones, and heavy vehicle loads on the edge of the foundation pit. The laws of surface settlement and deformation outside the pit were summarized in different zones of the foundation pit. Based on the inclination measurement data of the retaining wall and the law of surface settlement data, relevant construction control measures were discussed, providing experience and reference for similar projects in the future.