Construction Project
Municipal Train Duisburg, Costruction Phase TA6-Lot 22 |
Location
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Client
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Planning
- Metropolitan Railway Construction Office of the City of Duisburg
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Investment volume
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Construction time
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Activities
- Construction management
- Contract management
- Technical coordination
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Structures constructed
- Starting and destination shaft in open construction with 120,000 m³ excavation
- Two one-track tunnels (L = 2 x 1,080 m) with 44,000 m³ tunnel excavation
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Special features
- Assembly of shield (L = 7.0 m) and rear carriage (L = 43.0 m) with a weight of 320 t with the help of an 800 t truck- mounted crane
- Shield tunnelling with a hydroshield (Øe = 6.52 m) for the line area in the tunnel
- Tunnelling liquid-supported road header, mechanical soil removal and hydraulic soil conveyor
- Stone catcher ahead of the feed pump and a sluice at the foot of the pressure wall simplify removal of obstacles
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Utilization
- Metropolitan railway tunnel of the City of Duisburg
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Construction
- Single-shell expansion (Øi/Øe = 5.70/6.30 m) with waterproof reinforced concrete block tubbings
- Tubbing ring width of 1.20 m, consisting of seven segment stones and one capping stone
- Concrete quality B 45 and concrete tubbing thickness d = 30 cm
- Neoprene tape in the groove running around the tubbing to seal the seam against water pressing in
- Delivery of the tubbings as concrete prefabricated parts with a required dimension precision of +/-0,5 mm
- Embedding of the tubbings in the subsoil by force-fit pressing of the shield track using mortar
- Excavation pits with subterraneous curtains and overlapping caisson piles
- Watertightness of the excavation pits by binding the subterraneous curtains and caisson piles in the in-situ carbon
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Geology
- Two groundwater storeys with seasonal fluctuations between 4.0 and 8.5 m
- Fills, clay, gravel, sand, fine sand, potter’s clay
- Chalk silt without sand inclusions respectively with sand strips and sand layers
- Rock of the carbon
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