Research on Construction Disturbance of Shield Tunnel Undercrossing Complex Pile Foundation Groups on Existing Municipal Roads
With the further development of Shenzhen's urban rail traffic network,there will be more and more cases of shield tunneling passing through the existing buildings and structures.To ensure that the geological disturbance caused by shield tunnel passing through construction does not affect the normal use of existing buildings,it is necessary to study the impact of shield tunnel passing through existing the buildings.This article relies on the shield tunneling of the underground municipal road project of Guiwan 1st Road under the Shenzhen Airport to Qianhai section of the Guangzhou Shenzhen Intercity Railway transport project.Through numerical simulation calculation and on-site measurement data comparison,the construction disturbance of the existing buildings caused by shield tunneling is studied.It is found that the settlement deformation trend and maximum settlement location of the underground ramp road are consistent with the on-site measured data.During the process of shield tunnel passing through,the deformation of the existing structure is within the design requirements.
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