Safety Impact Assessment of Power Tunnel Pipe Jacking Construction Overcrossing Existing Intercity Railway Tunnel
With the extensive application of pipe jacking in underground engineering construction,it is inevitable to cross the adjacent existing building structures.In this paper,based on the pipe jacking construction of a power tunnel overcrossing existing intercity railway tunnel in Guangzhou,a three-dimensional finite element calculation model is established by using MIDAS GTS NX of geotechnical professional analysis software.Base on the numerical simulation of working well excavation and pipe jacking construction by using displacement method control,the paper analyses the influence of power tunnel pipe jacking construction on the stress and deformation of existing intercity tunnel,hoping to provide reference for similar projects.
NETL
NSTL
万方数据
维普
