Abstract:

The subway tunnel excavation will cause ground surface subsidence and influence the ground surface environment. When there are buildings on the ground surface, it will cause the deformation of the building. This paper takes an example a building in Qingdao which is passed through by the subway tunnel. Using the data of surface subsidence collected in the construction process, it attempts to analyze reversely the surface movement parameters and address the settlement of the ground surface by means of the stochastic medium theory and the Peck method. In the meantime, attempt has been made to use the parameters to predict the surface subsidence under the building. A three-dimensional finite element model of the research object (the building) has been developed through the finite element software ANSYS. Research results indicate that the impact tunnel construction has on reinforced concrete frame shear wall structure deformation follows certain rules.

Key words: tunnel construction, ground surface deformation, frame-shear wall structure, structural deformation