Relying on the project of a large shield tunneling under a high-speed railway frame bridge and structure in an urban rail transit section,MIDAS software was used to simulate the construction process.The result shows that,there is a safety risk of uneven settlement when the shield passes under the high-speed railway frame bridge,and the settlement value is beyond the controllable range.The settlement displacement is safe and controllable by taking the technical measures for grouting reinforcement;through strict control in the construction stage,the actual displacement monitoring value is close to the displacement calculated value,which is feasible for the protection measures of high-speed railway frame bridge.
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