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Cimientos prefabricados con sistema de inyección de lechada y sistema de nivelación para energías renovables marinas y aplicaciones offshore

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOFR20160914002
Publicado:
13/10/2016
Caducidad:
13/10/2017
Resumen:
Una empresa francesa de ingeniería de estructuras especializada en diseñar cimientos para proyectos de energía marítima ofrece un concepto patentado de cimientos prefabricados de acero, hormigón o estructura híbrida equipado con un sistema de inyección de lechada y nivelación. Este sistema se adapta a fondos marinos rocosos y puede desmantelarse. La empresa busca socios industriales con el fin de establecer acuerdos de cooperación técnica y licencia.

Details

Tittle:
Prefabricated foundation with grout injection system and jack leveling system, dedicated to marine renewable energy and offshore use
Summary:
A French company, specialized in the design of foundations for marine energy projects, proposes a patented concept of prefabricated foundation (steel, concrete or hybrid structure) equipped with grout injection system and jack leveling system. This system is adapted to rocky seabed and could be decommissioned. The company is looking for industrial partners for technical co-operation and licensing of the technology.
Description:
A French structural engineering company specialized in the design of foundations for marine energy projects, has patented a technology for an interface between rocky seabed and a gravity base structure capable to support regular structure interfacing with the Wind Turbine (jacket, tripod or monopile).

Today, offshore foundations are complex to assembly, require time for each foundation´s installation and so, can be really expensive.

The French company proposes an innovative concept of offshore wind foundations. It consists of a prefabricated and self-floating foundation with grout injection system into bags and associated with jack leveling system. It allows laying foundations on rocky seabeds and also can adapt to seabed irregularities larger than 1 meter height and gentle slopes.

The towing is ensured by a 100-T bollard pull tugboat. Just three 10-T bollard pull tugboats are required to position the structure during the ballasting operation. Once the three 10-T bollard pull tugboats are connected, the 100-T bollard pull tug boat is available for the next foundation.

After being towed, the self-floating foundation is submersed. Submersion is controlled by monitored ballasting of water compartments. The structure gently lands on 6 hydraulic jacks. The lowering operation takes approximately 30 minutes. Accurate bathymetric survey is used to optimize the foundation´s orientation. No intrinsic limitations exist to water depth.

Accurate levelling can be achieved with the jacks, using readily available instrumentation. The concrete is then injected in modular flexible cofferdam bags that ensure a perfect fit to seabed irregularities. The concrete injection is completed sequentially. Then, all of the compartments are filled with water to ensure the long term stability of the foundation.

A variety of concrete compositions may be used including quick curing concrete.

20 years later, the decommissioning could be run by air injected into the ballast compartments that will provide sufficient buoyancy for the structure to float again with minimal marine operations. The foundation can subsequently be towed to the shore.

The French concept is also designed to be integrated into a conventional gravity base structure. It can be used for wind turbines, met mast, tidal turbines, substation, jackets, gravity base structures and oil and gas platforms.

The company is looking for industrial partners for technical co-operation and licensing of the technology.
Advantages and Innovations:
· Intrinsic simplicity with a prefabricated and self-floating foundation
· Lower costs: no seabed preparation; no need for means of expensive lifting, which are difficult to source and are dependent on weather conditions; no need of coring boreholes, except in special cases
· The construction can be performed by the local industry
· A 30-hour installation with light marine operation
· Installation by monitored ballasting
· Levelling by a system of underwater jacks
· Auto-installation on top of the seabed with irregularities up to 1 meter
· Settlement by concrete injection in a flexible rubber modular form the casing filled with water only
· Easy decommissioning by an air injection into the casting
· Regular construction technology, material and instrumentation
· No environmental impact on the seabed
· Structure could be reused/moved
Stage of Development:
Already on the market
IPs:
Patents granted
CommeR Statunts Regarding IPR Status:
Patent granted in EU and WO extension

Partner sought

Type and Role of Partner Sought:
Partners sought : industrials in marine renewable energy
These partners should be developpers of offshore wind farms, or tidal stream solutions with specific needs in foundations. A technical cooperation agreement is proposed, following specifications.
Designers of fixed foundations would also be interested in the proposed solution and a licence agreement could be proposed.

The French partner proposes to provide the design and analysis for all type of foundation, in steel or concrete or hybrid structure from basic engineering to the detailed design. Licensing of the concept use is proposed.

Client

Type and Size of Client:
Industry SME <= 10
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English
French

Keywords

Technology Keywords:
04005002 Hydropower
02006001 Materials, components and systems for construction
02008008 Transporte marítimo
04002009 Turbinas
04005008 Wind energy