Taking the utility tunnel K4 shield work shaft of Keyun section of Guangzhou Tianhe Smart City as the research object,the influence of foundation pit construction of adjacent urban rail project on the utility tun-nel shield work shaft was analyzed.By using Midas/GTS,a special software for geotechnical engineering,finite element simulation was carried out.Through the data statistics of key construction steps,the changes and influ-ence rules of the excavation of the adjacent foundation pit on the formation displacement,ground connection wall displacement and internal support axial force of K4 shield work shaft were analyzed.Reasonable suggestions and measures were put forward to ensure the safe construction of foundation pit.
Utility tunnelUrban railTwo adjacent foundation pitsFEM
NETL
NSTL
万方数据
