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Lötschberg Base Tunnel

Switzerland

On the Lötschberg Base Tunnel in Switzerland, Doka supplied several adaptable tunnel formwork travellers for complex sections such as the 4 jet-vent tunnels and the 275m long broadening zone. The fact that the system components used here are all rentable, and that the system is so adaptable and easy to operate, were a crucial advantage.

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Project data

Year of completion
2005
Project duration
4 Months
Country
Switzerland
Town or city
Frutigen
Realization
JV 'Arge SATCO – Schweizer Alp Transit Consortium'
Structure
Tunnel
Type of structure
Mining-type tunnel

Floor-slab

Construction method
Segmented (non-monolithic)
Cross-sectional shape
Curved/round
Clear width
13.10 m
Clear height
9.95 m
Formed length of tunnel
200 m
Type of carriage/traveller or formwork
Small formwork traveller
Length of concreting section
12.50 m
Number of casting sections
16
Cycle time
2 -day cycle

Floor-slab

Construction method
Segmented (non-monolithic)
Clear width
18.10 m
Clear height
9.95 m
Formed length of tunnel
75 m
Type of carriage/traveller or formwork
Large formwork traveller
Length of concreting section
6.25 m
Number of casting sections
12
Cycle time
3 -day cycle