Abstract:

Based on the tunnel shield construction of Shanghai’s No.7 Metro line, the tunnel shield construction was divided into four typical construction stages. The two-dimensional dynamical simulation of the influence of building pile foundation induced by adjacent tunnel shield construction is implemented. By combining a stress release factor method with a method of variable rigid body to simulate the grouting, an elasto-plastic finite difference method is used to analyze the impact of building pile foundation induced by adjacent tunnel shield construction. The axial force, shear force, bending moment and displacement of the building pile are analyzed. Conclusions drawn provide reference to the construction of shield tunnel.