A full 3-D finite element analysis of tunnelingadjacent structures interaction
This paper concerns a study of the interaction between tunneling in soft soils and adjacent structures. Analysis is performed using a full three-dimensional finite element model, which takes into consideration the presence of the structure during the construction of the tunnel. The soil behavior is assumed to be governed by an elastic perfectly-plastic constitutive relation based on the MohrCoulomb criterion with a non-associative flow rule. The paper is composed of three parts. The first part describes the numerical model used in this study, the second part concerns a full three-dimensional analysis of the construction of a shallow tunnel close to a two level building. The last part includes comparison between the full 3D analysis and a simplified approach, which neglects the influence of the presence of the structure in the determination of the tunneling-induced ground movement.
finite element tunneling structure interaction three-dimensional plasticity