GEO5 FEM - Tunnel is used to design and analyze tunnels. It includes specialized tools for the definition of tunnel lining, the system of anchors and rock bolts and grouting-strengthen regions. The relaxation factor assigned to each construction stage takes the 3D effect of the excavation into account. The main features of GEO5 FEM - Tunnel module are:
- Two options for modeling linings (Beam elements - 1D or standard 2D elements)
- Option to create a geometrical model of the lining in a separate pre-processor using data in an external format (such as DXF).
- Simple introduction of lining into the soil/rock body - topology correction and mesh generation are fully automatic
- Any number of construction stages
- Use of a relaxation factor to model the 3D behavior of the body during excavation
- Introduction of hinged bearing ends of the beam elements
- Input of temperature loads on the beams
- Consideration of soil swelling
- Consideration of lining shrinkage
- Analysis of a secondary lining either by changing the geometrical parameters (1D elements) or by changing the parameters of the original lining to allow for the transfer of stresses (2D elements)
- Introduction of monitoring points anywhere in the body
- Graphical representation of the distribution of internal forces on active parts of the lining
- Automatic generation of anchors fixed to the lining
- Introduction of anchors as a region of improved soil mass (anchored region)
