Deformation Law of Existing Pedestrian Overpasses under the Influence of Deep Foundation Pit Construction in Subway Shafts
Subway tunnels in bustling urban areas are often constructed using shallow buried and concealed excavation methods,and the depth and size of vertical shafts used as construction channels are usually large,inevitably affecting surrounding buildings and structures.Based on the construction of a vertical shaft in a tunnel of Beijing Metro Line 22,numerical simulation methods were used to simulate the layered excavation construction of the shaft,and the impact of the construction process on the existing pedestrian overpass was studied,providing reference for similar projects.
subway tunnelsconstruction shaftpedestrian overpassnumerical simulationdeformation law