wind turbine concrete towers - dansk · pdf filewind turbine concrete towers ... tendon size...
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Wind turbine concrete towers
History
Steel vs concrete
Nees Project
Design challenges
Concrete specification
Construction challenges
Future
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History
Tvind 1970
Foundation slabs 1970 - 2011
Nysted Havmøllepark 2003
Thornton Wind Farm 2006
Nees Project 2010
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Tvind
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Precast shells
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Nysted Havmøllepark Foundations
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Thornton Wind Farm
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Steel vs concrete
AND: MONEY TALKS!
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Nees Project
Client: Siemens Wind Power
Consultant: COWI
Contractor: Aarsleff
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Foundation
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Reinforcement
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Slipforming
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Loads samt:
•Is
•Strøm
•Egenvægt
•Dynamik
•Stivhed
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Øresund Bridge
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Concrete specification
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Construction challenges
Construction speed
Construction cost
Structural reliability
Structural predictability
Just-in-time schedule
Climate
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Future
Nysted Havmøllepark
Thornton Bank
Nees
150m onshore towers
all-in-one offshore structures
thin-walled structures
fibre-reinforced concrete
5500 mm
9100 mm
6500 mm
3000 mm
+0.14 MLLWS+0.56 LWS
+2.29 MSL
+6.05 (50 year)
4.5m
D6: -27.0
Stable erosion protection.
R 300
0?
+8.00
0.00