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U4 "HafenCity", high supporting construction frames

Germany

This extension of the U4 line begins at the existing Jungfernsteig station, from where it runs underground in a southerly direction. Two new stations were built in the HafenCity: 'Überseequartier' and 'HafenCity Universität'. In the works on the Überseequartier station building, horizontally arranged trench-shoring girders made it impossible to lift and reposition the wall formwork elements by crane. This necessitated using a traveller unit from which the wall formwork was suspended in large-area gangs. The excavation pit for the 'HafenCity Universität' contract section was so narrow that there was only enough space for single-sided formwork to form the 1.50 m thick and 10.60 m high walls. Doka supporting construction frames, coupled with Attachable frames F 2.40, were the right formwork concept here.

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Project data

Year of completion
2009
Project duration
12 Months
Country
Germany
Town or city
Hamburg
Contractors
Arge U4-HafenCity
Structure
Tunnel
Type of structure
Cut-and-cover tunnel

Stop Überseequartier

Cross-sectional shape
Rectangular
Clear width
17,68 m
Clear height
10,20 m
Formed length of tunnel
168 m
Length of concreting section
10,16 - 11,65 m
Number of casting sections
30

Stop HafenCity University

Cross-sectional shape
Rectangular
Clear width
16,48 m
Clear height
10,60 m
Formed length of tunnel
135 m
Length of concreting section
10,20 m
Number of casting sections
13