Influence of initial deviation of concrete-filled steel tube column on displacement of subsurface structure

In order to study the influence of location deviation of concrete-filled steel tube column on the displacement of underground structure,on the basis of the geological condition,construction scheme,column-pile layout and other related data,a three-dimensional model of the construction process of the subway station CCTDM at Tianjin cultural square was established using the Midas/GTS.The influence of three different location deviations of concrete-filled steel tube on the displacement of concrete-filled steel tube itself,pile foundation,diaphragm wall and floor in the excavation process was simulated and analyzed.Results showed that location deviation caused larger horizontal displacement of the vertical line of the subsurface structure and smaller vertical displacement.And the larger the deviation is,the larger the horizontal displacement will be.In addition,different types of local deviation have larger influence on the horizontal displacement,and smaller influence on the vertical displacement.This article provided some reference data for the error control of similar projects.