Displacement Monitoring during the Excavation and Support of Deep Foundation Pit in Complex Environment

Taking a super large deep foundation pit project as an example, the horizontal displacement of crown beam and driveway, surface settlement, axial force anchor cable, underground water level in construction process are dynamically monitored analyzed. The excavation deformation rule influence on surrounding buildings results show that, with pit, driveway incline towards direction eventually tend to be stable. variation prestressed cable first layer is basically consistent time history. trend groundwater at each side different but tends stable short time. In whole monitoring period, cumulative settlement value area within controllable range, north building has not reached stability, so it suggested extend relevant area.