Finite Element Method Analysis of Influence on Subway Tunnel Adjacent to Excavation by Excavation Construction
نویسندگان
چکیده
The interaction influence on subway tunnels adjacent to foundation excavation was produced by excavation construction, and it is great significance for the correct assessment of its size and influence on the safety of subway operation. Based on the foundation excavation project, some typical foundation excavation profiles are selected, the calculation and analysis on additional settlement and horizontal displacement of subway tunnels adjacent to foundation excavation construction in four construction conditions are conducted by finite element numerical method. The results were shown that there is less influence on subway tunnel due to excavation construction in first two construction conditions, and additional settlement and horizontal displacement of subway tunnels is less than 4mm; In the following two construction conditions, both additional settlement and horizontal displacement of subway tunnels structure in somewhere are greater than 4mm, which of other everywhere are less than 4mm, which basically meet the requirements of subway operation line track deformation, additional settlement and horizontal displacement of subway tunnel by foundation excavation will be controlled within the range ± 4mm.
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