skip to content
back to top
Tunnel in shotcrete construction method
|
|
Project:
Tunnel, Griechenland
Customer:
Maidl & Maidl Consulting Engineers, Bochum
Project description:
The Panagopoula tunnel is planned as part of the new high-speed railway link between Corinth and Patras in Greece. The tunnel consists of two single-track tubes with a total length of 4676 m. Both tubes have a distance of 25 to 35 m and an overburden of 20 to 280 m. The two tunnels will be constructed using the shotcrete construction method (New Austrian Tunnelling Method).
Subsoil:
Lime stone, weathered lime stone, conglomerates, Flysch
Scope of work:
- Two-dimensional Finite Element analyses (plane strain) of different cross sections
- Analyses with different overburden (15, 50 and 200 m) and of different excavation classes
- Graphical visualisation of the results, in particular the structural forces and the measurable deformations of the shotcrete lining
Used Finite Element Code:
PLAXIS 2D V8.6
Used constitutive laws:
Linear elasticity (generalized Hooke)
Linear-elastic, perfectly-plastic model (Mohr-Coulomb)
Model size:
| 15 m overburden: 50 m x 45 m 4.347 triangular elements with 4th order interpolation 34.975 nodes |
50 m overburden: 50 m x 80 m 2.552 triangular elements with 4th order interpolation 20.601 nodes |
200 m overburden: 50 m x 230 m 3.147 triangular elements with 4th order interpolation 25.363 nodes |
