Analysis of the Impact of Subway Deep and Large Pits Excavation on Adjacent Two-way Curved Arch Bridges
This paper is based on a subway station on Line S8 of the Nanjing Metro,and studies the deformation law of the adjacent two-way curved arch bridge caused by the excavation of the subway station foundation pit.It focuses on studying the effects of different thicknesses of underground continuous walls and MJS construction reinforcement on the deformation of the two-way curved arch bridge.Through various monitoring data analysis,it is found that the deformation of the two-way curved arch bridge during MJS construction is generally smaller than the settlement of the bridge piers during the enclosure structure period.The deformation of the foundation pit itself and adjacent two-way curved arch bridges is mainly concentrated in the excavation stage of the foundation pit.The impact of excavation on the deformation of the two-way curved arch bridge during the backfilling period of the foundation pit is minimal,and the deformation pattern is consistent with the deformation impact of excavation on the surrounding environment.Through information monitoring,construction can be better guided and reference can be provided for similar practical projects.
subway stationsexcavation of foundation pitsperipheral settlementtwo-way curved arch bridge
NETL
NSTL
万方数据
