Regarding the problem of shield runnel cutting pile foundation of bridge at traversing area,a calculation model is established consistent to actual supporting design using FLAC 3D numerical simulation software.Analysis of load bearing state of the piles is performed to obtain different stresses of piles of bridge foundation and ground surface deformation with the support of underpinning piles when shield tunnelling traversing and cutting pile foundation of the bridge.The simulation results show that the suggested treatment plan is feasible and it can ensure the stability of bridge during shield tunnelling construction, and it meets the control requirements of ground surface deformation, which can provide reference for similar projects.
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