Blessberg Nord railway tunnel
Germany
Blessberg Nord is the longest of 22 railway tunnels on the new line being built between Ebensfeld and Erfurt. Doka's technically sophisticated solution won it the formwork contract for the northern portal. Despite being 17 m wide, the entire inside tunnel-formwork traveller was advanced in just one repositioning cycle. The tunnel formwork traveller was assembled by Doka.
Project data
- Year of completion
- 2013
- Project duration
- 4 Months
- Country
- Germany
- Realization
- Ed. Züblin AG
- Structure
- Tunnel
- Type of structure
- Cut-and-cover tunnel
Wall
- Construction method
- Partially monolithic
- Cross-sectional shape
- Curved/round
- Clear width
- 17.05 m
- Clear height
- 10.66 m
- Formed length of tunnel
- 30 m
- Length of concreting section
- 9 m
- Number of casting sections
- 4