Settlement Monitoring and Simulation Analysis of Frame Structure Induced by Shield Tunneling
In order to study the influence of shield tunnel construction on the upper frame structure,taking the shield of Guangzhou utility tunnel undercrossing the middle and high-rise frame structure as the engineering background,the response law of the structure is analyzed by means of on-site settlement monitoring and numerical inversion.The results show that the settlement process of the column foundation at the undercrossing position of the shield in this project is mainly manifested in three stages:main settlement,settlement rebound and settlement stability.The column bases with large settlement are mainly distributed along the axis of the shield,and the column bases with large differential settlement are mainly distributed around the axis of the shield.The crossing position of the shield will affect the inclination trend of the building.The secondary grouting in the tunnel in time after the shield crossing can reduce the settlement,uneven settlement and overall inclination of the frame structure in the stable stage.
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