Study on the Influence of Shield Tunnel Underpass Construction on High-speed Railway under Construction in Soft Soil Area
In view of the engineering problem of subway shield tunnel under curve in the soft soil layer under construction of high-speed railway,the engineering measures of strengthening the soft soil layer in the area under penetration by pile-plate structure are put forward.The influence of shield tunneling on soft soil reinforcement area,high railway foundation and track is studied by the method of numerical simulation and field measurement.The results show that the pile-sheet structure can effectively reduce the influence of shield construction on the superstructure.In the reinforced soft soil area,the deformation of the upper subgrade and rail is very small,and the deformation of the area that is far away from the reinforced area of the pile-plate structure is larger than that of the reinforced area,indicating that the reinforcement of the pile-plate structure in the soft soil area under the shield has a significant effect on controlling the deformation of the superstructure.
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