Construction Project
Metropolitan Railway Bochum, Contract section D7 |
Location
|
Client
|
Planning
- Metropolitan Railway Construction Office of the City of Bochum
|
Investment volume
|
Construction time
|
Contracted services for BMG
- Construction management
- Contract management
- Technical coordination
|
Structures constructed
- Starting shaft in dig-and-cast construction method with overlapping caisson piles
- Two one-track railway platform tunnels (L = 110 m) with an excavation cross-section of 55 m² each
- Underground track change (L = 96 m) with a maximum excavation cross-section of 122 m²
- Two one-track railway tunnels (L = 880 m) with an excavation cross-section of 21 m² each
|
Special features
- Tunnelling using special tunnel excavating machines or, due to space restrictions, using a small local section machine
- Tunnelling using New Austrian Tunnel construction method, making use of reasonable cross-section breakdowns
- Tunnelling of track change with excavation cross-sections of 36 m² to 122 m²
- Restriction of the settlement to 20 mm
|
Utilization
- Metropolitan railway tunnel of the City of Bochum
|
Construction
- Driving of the tunnels in partial cross-sections
- Securing of the tunnel embrasure using lining arches, concrete reinforcement steel mats and spray concrete
- Installation of all tunnel inner shells using concrete impervious to water
- Installation of the inner shell with a full-round formwork carriage in the area of the distance profile
- In the area of the station profile, installation of the inner shell with preceding invert and following arch formwork carriage
- In the area of the track change, installation of the inner shell using invert-wall-ceiling construction
|