Numerical analysis of foundation pit supporting for
an international trade building
1.School of Civil Engineering and Transportation, Hohai University, Nanjing, Jiangsu 210098, China； 2.Nanjing Municipal Design and Research Institute Co.， Ltd., Nanjing, Jiangsu 210008, China
Abstract：According to the actual condition and construction process of an international trade building engineering, the three dimensional numerical analysis model of the foundation pit supporting was established by the finite element program of ABAQUS. Changing the support, floor and prestress, the different forms of foundation pit supporting were considered to analyze the bottom of pit rebound uplift under five work conditions. Compared with the measured results, the rationality of numerical analysis model was verified. The result shows that the influence of foundation pit supporting on the bottom of pit rebound uplift is mainly in the diaphragm wall, and increases with the width of foundation pit. The bottom rebound uplift deformation at the central position of foundation pit is finally converged. The asymmetric shape of foundation pit influences the small rectangular pit greatly, and lightly influences the large rectangular pit. The shape of pit bottom rebound uplift is symmetrical. The soil deformation behind the wall increases with the increasing of diaphragm wall deformation, while the bottom rebound uplift deformation is decreased.
2014, Vol. 35 
