This tutorial demonstrates TBM (Tunneling) modeling in Abaqus with dry and saturated soil conditions.
The soil is modeled as a three-dimensional part, divided into two zones: dry and saturated. The Mohr-Coulomb plasticity model is used to represent soil behavior.
The tunnel lining is modeled as a three-dimensional shell with concrete material properties.
The analysis is performed in several steps:
Application of soil body forces
Excavation
Relaxation
Installation of the lining
A transient soil step is used, which is appropriate for this type of tunneling analysis. Figures of the simulation are provided below.
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