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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.

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VDE 8 railway project, Nuremberg-Berlin
VDE 8 railway project, Nuremberg-Berlin
VDE 8 railway project, Nuremberg-Berlin
VDE 8 railway project, Nuremberg-Berlin

Project data

Year of completion
2013
Project duration
4 Months
Country
Germany
Contractors
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