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1CDTI-NEDO Joint Workshop on Offshore Wind
CDTI-NEDO Joint Workshop on Offshore Wind
Kitakyushu, 8th of July 2019
Projects of Concrete foundation for Floating Offshore Wind Turbine in Japan
Yosuke YAGI, Director of Engineering Division
FUJI P.S CORPORATION
2CDTI-NEDO Joint Workshop on Offshore Wind
Corporate Outline
Founded in 1954, FUJI P.S CORPORATION has dealt with numerous infrastructures essential for life including bridges with advanced technologies based on the prestressed concrete technologies.
▼ JapanHead Office
Branch Office
Factory
Kyushu Area
Head Office, Kyushu Office
Kansai Area
▼OverseaMyanmar FUJI P.S Construction Co., Ltd.
Nagoya office Kanto Area
Tohoku office
Kanto office
Japan
Republic of the Union of
Myanmar
Hiroshima OfficeKansai Office
3CDTI-NEDO Joint Workshop on Offshore Wind
Technology and service
Bridge Building Factory Products
Maintenance Technology Development
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Concrete foundation for floating offshore wind turbine -NEDO Project-
Concept
DownwindTwo-bladedNo yaw system
Single point mooring
Catenary mooring system
Guyed tower with shaped structure
Fixed floaters
Concrete foundation
Next Generation Floating Offshore Wind Turbine Technologies Demonstration Research (Element Technologies Development)
株式会社富士ピー・エス
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Concrete foundation Efficient use of materials on low structural weight Easy producible Easy transportable
Concrete foundation for floating offshore wind turbine -NEDO Project-
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Concrete foundation for floating offshore wind turbine-Demonstration Project in Hakata Bay-
• Experimental period：2011-2012• Concrete foundation• 3 kW class Wind-lens turbine and
Solar panel
Offshore Hybrid Energy Farm Experiment in Hakata-bay with Wind-lens turbines
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Demonstration Project in Hakata Bay -Location
• Inside Hakata Bay, Fukuoka City (About 650m offshore)
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Floating body (φ=3.5m,H=4m)
Connecting member
Lid
Inner truss
Outer truss
Design condition30-year Probability wind speed 22m/s30-year Probability wave height
H1/3=0.9mHmax=1.6mT1/3=2.3s
• Precast PC structure• Hexagonal floating structure
Demonstration Project in Hakata Bay - Structural Data
Performance requirements • Floating body and truss member are
dose not destroy at the time of storm• At the time of lifting, towing and
maintenance, the cylinder floating body and truss members are structured so as not to generate cracks.
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Demonstration Project in Hakata Bay –Construction
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Ideas for a Spain — Japan collaboration
Feasibility of concrete foundation has been shown in the NEDO project.Concrete brings the benefits of local production for local consumption both in Spain and in Japan. Therefore, concrete foundation for floating offshore wind turbine is expected to develop through collaboration between Spain and Japan.
