Analysis of the impact of municipal supporting engineering construction on existing metro stations
Operations within and outside subway protection zones require stringent control measures.With shallow soil cover and high groundwater levels above metro stations,unloading has a more pronounced impact on existing structures.Taking the municipal supporting project across the metro in a city as an example,this article identifies the risk sources of external operation construction projects,and studies the influence of construction on the deformation,stress,and anti-floating stability safety factors of the existing metro structure through finite element analyses and theoretical calculations.It can be seen from the calculation results that the excavation unloading has an obvious influence on the vertical deformation of the structure,and the influence of construction on the stress and anti-floating stability of the metro structure can meet the requirements of the standard.By comparing numerical simulation data with monitoring data,it was found that the simulation results matched the actual situation,proving the reliability of the numerical calculations.Based on this,this article proposes effective construction control measures,aiming to provide reference and guidance for similar projects.
metro stationpipeline corridorroadbed replacement and reclamationfinite element analysismonitoring
NETL
NSTL
万方数据
