CN115339581A - Floating type reinforced concrete universal wind power foundation - Google Patents
Floating type reinforced concrete universal wind power foundation Download PDFInfo
- Publication number
- CN115339581A CN115339581A CN202211150547.0A CN202211150547A CN115339581A CN 115339581 A CN115339581 A CN 115339581A CN 202211150547 A CN202211150547 A CN 202211150547A CN 115339581 A CN115339581 A CN 115339581A
- Authority
- CN
- China
- Prior art keywords
- reinforced concrete
- foundation
- fan
- floating
- wind power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Abstract
The invention provides a floating reinforced concrete universal wind power foundation which comprises a wind driven generator and a fan reinforced concrete tower barrel, wherein the floating reinforced concrete universal wind power foundation further comprises an upper floating tension leg reinforced concrete fan foundation, a lower counterweight reinforced concrete foundation and a tension leg tendon connecting the upper floating tension leg reinforced concrete fan foundation and the lower counterweight reinforced concrete foundation, the tension leg tendon is a slowly-bonded steel strand applied with tension force, the wind driven generator is positioned at the top of the fan reinforced concrete tower barrel, and the bottom of the fan reinforced concrete tower barrel is connected to the upper floating tension leg reinforced concrete fan foundation. The floating reinforced concrete universal wind power foundation can adapt to different ocean depths and seabed conditions, the same type of fans in the same ocean wind field can be completely same in size, and only the length of the tension leg tendon slow bonding steel strand needs to be adjusted.
Description
Technical Field
The invention belongs to the technical field of ocean structure engineering assembly, and particularly relates to a floating reinforced concrete wind power foundation.
Background
With the gradual strict control of carbon emission in the world, the investment of clean energy is gradually increased in all countries, at present, the clean energy mainly comes from hydropower, solar power generation, nuclear power and wind power, the hydropower is developed almost, the nuclear power has certain nuclear radiation risk, the solar power generation occupies a large area of land and is only suitable for being developed in desert, the wind power is divided into land wind power and ocean wind power, the land wind power also occupies the land and has large influence on the environment, a wind field is unstable, the ocean wind power is divided into shallow sea wind power and deep sea wind power, the shallow sea wind power also has certain influence on the environment, fishery and sightseeing industry are influenced, the incoming wind quality is worse than that of the deep sea, and the effective time of power generation is lower than that of the deep sea, so the countries gradually tend to develop to the deep sea. With the tendency of saturation of shallow sea wind power installations, deep sea wind power is inevitably developed on a large scale, but the manufacturing cost of deep sea wind power foundations is higher, and wind power foundation construction and fan installation are difficult.
At present, deep sea wind power foundation mainly has three forms: the foundation is made of steel structure and fixed on the deep sea bed by anchoring system. This foundation has five major disadvantages: (1) the steel consumption is large, the cost is high; (2) the corrosion resistance of steel is poor; (3) The anchoring system has high manufacturing cost and poor corrosion resistance, and the anchoring requirements of different seabed conditions are greatly different; (4) the manufacture and installation are complex, and the construction period is long; (5) The existing floating fan base platform has large displacement and higher requirement on the fan, so that the cost of the fan is increased.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a floating reinforced concrete wind power foundation which is easy to install and stable in performance.
In order to achieve the above object, the present invention provides the following technical solutions.
The floating reinforced concrete universal wind power foundation comprises a wind driven generator, a fan steel tower cylinder, an upper floating tension leg reinforced concrete wind power foundation, a lower counterweight reinforced concrete foundation and a tension leg tendon connecting the upper floating tension leg reinforced concrete fan foundation and the lower counterweight reinforced concrete foundation, wherein the tension leg tendon is a slow bonding steel strand applied with tension force.
In the floating reinforced concrete universal wind power foundation, the upper floating tension leg reinforced concrete fan foundation, the lower counterweight reinforced concrete foundation, the fan steel tower barrel and the wind driven generator can be manufactured and assembled on land, and are directly driven to a fan wind field by a tugboat for positioning and then directly sunk and installed, so that extra piling and anchoring are not needed, and the foundation can adapt to different ocean depths and seabed conditions in deep sea.
According to the floating reinforced concrete universal wind power foundation, the bottom of the fan steel tower cylinder is embedded in the upper floating tension leg reinforced concrete wind power foundation.
According to the floating reinforced concrete universal wind power foundation, a steel pipe protective sleeve is arranged on the periphery of the slow bonding steel strand, and grouting slurry is arranged in a gap between the steel pipe protective sleeve and the slow bonding steel strand.
According to the floating reinforced concrete universal wind power foundation, the upper floating reinforced concrete fan foundation and the lower counterweight reinforced concrete foundation are connected through the temporary unbonded steel stranded wires for sinking the lower counterweight reinforced concrete foundation.
The floating reinforced concrete universal wind power foundation comprises a top plate, a bottom plate, an outer wall, reinforced concrete wrapped outside a fan steel tower cylinder and an inner cavity separation reinforced concrete shear wall.
According to the floating reinforced concrete universal wind power foundation, the top plate is provided with a water injection and pumping inspection hole. The blower base is mounted in place, and the blower debugging is completed, and the inspection hole can be sealed by organic glass so as to facilitate observation.
According to the floating reinforced concrete universal wind power foundation, the bottom of the wall body of the inner cavity separation reinforced concrete shear wall is provided with a drainage inspection hole.
According to the floating reinforced concrete universal wind power foundation, the reinforced concrete wall-protecting columns are arranged on the inner side of the outer wall.
According to the floating reinforced concrete universal wind power foundation, steel strand preformed holes are reserved in the wall protection columns.
According to the floating reinforced concrete universal wind power foundation, the tensioning end anchor head of the slow bonding steel strand comprises an anchor backing plate, an anchor plate fixing anchor rib, a tensioning end clamping piece anchor, an anchor clamping piece anti-loosening pressing plate fixing bolt fixed on the anchor backing plate, a grouting pipe and top micro-expansion shrinkage high-strength anchor sealing concrete.
The floating reinforced concrete universal wind power foundation comprises a lower counterweight reinforced concrete foundation bottom plate beam, a lower counterweight reinforced concrete foundation upper retaining wall, a lower counterweight reinforced concrete foundation bottom plate and ballast sea sand positioned on the lower counterweight reinforced concrete foundation bottom plate.
According to the floating reinforced concrete universal wind power foundation provided by the invention, as long as the type of a fan is determined in the same ocean wind field, for different ocean depths and seabed conditions, the upper floating tension leg reinforced concrete fan foundation and the lower counterweight reinforced concrete foundation can both adopt the same size, the length of the tension leg tendon (namely, the slow bonding steel strand applied with tension force) can be adjusted to adapt to different ocean depths and seabed conditions, and the anchoring force is stable and controllable and is only related to the weight of the lower counterweight reinforced concrete foundation and the weight of the ballast sea sand filled in the lower counterweight reinforced concrete foundation.
According to the floating reinforced concrete universal wind power foundation, a fixed end extrusion anchorage device is arranged at the fixed end of the lower part of the unbonded steel strand and the bonding-retarded steel strand.
Drawings
Fig. 1 is a schematic structural diagram of a general type wind power foundation made and assembled on land by using floating reinforced concrete according to the invention.
Fig. 2 is a top plan schematic view of an upper floating tension leg reinforced concrete marine wind turbine foundation according to the present invention.
Fig. 3 isbase:Sub>A schematic cross-sectional view (sectionbase:Sub>A-base:Sub>A of fig. 2) of an upper floating tension leg reinforced concrete marine wind turbine foundation according to the present invention.
Fig. 4 is an enlarged view of C in fig. 2.
Fig. 5 is an enlarged view of D in fig. 3.
Fig. 6 is a schematic plan view of a lower weighted reinforced concrete foundation according to the present invention.
Fig. 7 is a schematic cross-sectional view (section B-B of fig. 4) of a lower-weighted reinforced concrete foundation according to the present invention.
Wherein the reference numbers indicate:
1-wind power generator
2-fan steel tower cylinder
3-Upper floating type tension leg reinforced concrete ocean fan foundation top plate
4-upper floating type tension leg reinforced concrete ocean fan foundation bottom plate
5-retarded adhesive steel strand
6-steel pipe protective sleeve
7-non-adhesive steel strand
8-steel strand fixed end extrusion anchorage device
9-lower counterweight reinforced concrete foundation upper and lower retaining wall
10-lower counterweight reinforced concrete foundation bottom plate beam
11-ballast sea sand filled on top surface of lower counterweight reinforced concrete foundation
12-retaining wall column
13-fan steel tower cylinder outer-wrapped reinforced concrete
14-upper floating type tension leg reinforced concrete ocean fan foundation outer wall
15-grouting slurry
Gap grouting slurry between 16-preformed hole and steel sleeve
17-inner cavity separated reinforced concrete shear wall
18-steel strand preformed hole
19-tensioning end clamping piece anchor
20-tensioning end anchor backing plate
21-anchor clamp anti-loose pressing plate
22-anchor clamp anti-loose press plate fixing bolt
23-anchor plate fixing steel bar
24-water injection water pumping and access hole
25-grouting pipe
26-lower counterweight reinforced concrete foundation slab
27-micro-expansion high-strength anchor sealing concrete
30-upper floating type tension leg reinforced concrete fan foundation
40-lower counterweight reinforced concrete foundation
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.
It is to be noted that some conventional technical operation steps and components are not described in detail in the following examples for the purpose of brevity and clarity, but it is to be understood that the conventional technical operation steps and components are obvious to those skilled in the art if not specifically stated.
Fig. 1 shows a schematic structural diagram of a general type wind power foundation made and assembled on land by using floating reinforced concrete according to the invention. From top to bottom, the wind driven generator comprises a wind driven generator 1, a wind driven generator steel tower barrel 2, an upper floating type tension leg reinforced concrete wind driven generator foundation 30, a lower balance weight reinforced concrete foundation 40 placed on a seabed, and tension leg tendons, namely slow bonding steel strands 5, connecting the upper floating type tension leg reinforced concrete wind driven generator foundation and the lower balance weight reinforced concrete foundation. The wind driven generator 1 is located at the top of the fan steel tower cylinder 2, and the bottom of the fan steel tower cylinder 2 is embedded in the concrete of the upper floating type tension leg reinforced concrete fan foundation 30.
The periphery of the retarded adhesive steel strand 5 is provided with a steel pipe protective sleeve 6, and a grouting slurry 15 and a grouting pipe 25 are arranged in a gap between the steel pipe protective sleeve 6 and the retarded adhesive steel strand 5.
An unbonded steel strand 7 is arranged between the upper floating tension leg reinforced concrete fan foundation 30 and the lower counterweight reinforced concrete foundation 40 and is used for sinking the lower counterweight reinforced concrete foundation 40 in place.
Fig. 2 shows a schematic plan view of an upper floating tension leg reinforced concrete wind turbine foundation 30. FIG. 3 showsbase:Sub>A schematic cross-sectional view (along section A-A of FIG. 2) of an upper floating tension leg reinforced concrete wind turbine foundation 30. Fig. 4 is an enlarged view of fig. 2 at circle C, and fig. 5 is an enlarged view of fig. 3 at circle D.
As shown in the figure, the upper floating type tension leg reinforced concrete fan foundation 30 comprises an upper floating type tension leg reinforced concrete marine fan foundation top plate 3, an upper floating type tension leg reinforced concrete marine fan foundation bottom plate 4, an upper floating type tension leg reinforced concrete marine fan foundation outer wall 14, fan steel tower cylinder outer-wrapped reinforced concrete 13 and an inner cavity separation reinforced concrete shear wall 17, and the upper floating type tension leg reinforced concrete marine fan foundation top plate 3 is provided with at least one water injection and water pumping inspection hole 24. At least one drainage inspection hole is arranged at the bottommost part of the wall body of each inner cavity separation reinforced concrete shear wall 17. The inner side of the foundation outer wall 14 of the reinforced concrete marine wind turbine with the upper floating tension leg is provided with a plurality of (for example, four, six, eight, ten, twelve and sixteen) reinforced concrete wall-protecting columns 12. A circular steel strand preformed hole 18 is reserved on the wall protection column 12 so that the unbonded steel strand 7 and the slow bonding steel strand 5 can penetrate through the hole.
And a steel pipe protective sleeve 6 is arranged on the outer side of the slow bonding steel strand 5, and after tensioning and locking of the slow bonding steel strand, a gap between the steel pipe protective sleeve 6 and the slow bonding steel strand 5 is filled with a high-strength grouting material (a commercially available product) to form a grouting material 15. And the gap between the steel pipe protective sleeve 6 and the steel strand preformed hole 18 is also filled with grouting slurry to form grouting slurry 16 for the gap between the preformed hole and the steel sleeve.
The tensioning end anchor head comprises a tensioning end anchor backing plate 20, anchor backing plate fixing steel bars 23, a tensioning end clip anchorage 19, steel strands (such as unbonded steel strands 7 or slowly bonded steel strands 5), an anchorage clip anti-loosening pressing plate 21, anchorage clip anti-loosening pressing plate fixing bolts 22 fixed on the anchor backing plate 20, a grouting pipe 25 and micro-expansion high-strength anchor sealing concrete 27 at the top.
Fig. 6 is a schematic top plan view of a lower counterweight reinforced concrete foundation of a floating reinforced concrete universal wind power foundation that can be fabricated and assembled on land according to the present invention. Fig. 7 is a schematic sectional view (along section B-B of fig. 6) of a lower counterweight reinforced concrete foundation of a floating reinforced concrete universal wind power foundation that can be fabricated and assembled on land according to the present invention.
The lower portion counter weight reinforced concrete foundation 40 includes unbonded stranded wire 7 anchoring ends for temporarily sinking the lower portion counter weight reinforced concrete foundation 40, tension leg tendon (slow adhesion stranded wire 5) anchoring ends for connecting the upper portion floating tension leg reinforced concrete fan foundation 30 and the lower portion counter weight reinforced concrete foundation 40, a lower portion counter weight reinforced concrete foundation bottom plate beam 10, a lower portion counter weight reinforced concrete foundation upper and lower retaining wall 9, a lower portion counter weight reinforced concrete foundation bottom plate 26, and packed ballast sea sand 11 on the lower portion counter weight reinforced concrete foundation bottom plate 26. And the anchoring ends of the unbonded steel stranded wires 7 and the slow-bonding steel stranded wires 5 are provided with fixed end extrusion anchorages 8. Slowly bond steel strand wires 5 and have steel pipe protective sheath 6 outward, during steel pipe protective sheath 6 and stiff end extrusion ground tackle 8 bury lower part counter weight reinforced concrete basis 40, more than lower part counter weight reinforced concrete basis 40, have high strength grout body 15 in the space between steel pipe protective sheath 6 and the slowly bond steel strand wires 5.
The floating reinforced concrete universal wind power foundation manufactured and assembled on land can adapt to different ocean depths and seabed conditions, so that the construction of an ocean wind field is as simple as building a steamship and launching the steamship. The wind turbine foundation can be manufactured and installed in a port, and then the wind turbine foundation is hauled to a wind field to be positioned and fixed like a ship.
The invention abandons the current common method of adopting a steel structure buoy with poor durability as a fan foundation, adopts a high-strength reinforced concrete buoy with excellent durability as a floating fan foundation, arranges a high-strength reinforced concrete counterweight foundation at the bottom of the fan foundation and sinks to the bottom of a seabed, and connects the floating fan foundation and the counterweight foundation through slow bonding prestressed steel strands applied with prestress to combine an upper foundation and a lower foundation into a whole, thereby ensuring the stability of the floating fan foundation and reducing the displacement of the floating fan foundation. The foundation in the form can provide stable anchoring force, has excellent corrosion resistance, can adjust the length of the slowly-bonded steel strand only for different ocean depths, has strong universality, and overcomes the defects of difficult construction, high manufacturing cost, unstable anchoring force, difficult corrosion prevention of anchor chains, different ocean depths and great difference of seabed conditions of the traditional tension leg foundation anchoring system. This form of wind turbine foundation may be constructed in a shipyard dock or in a self-erecting simple dock-like structure. In order to reduce the acting force of wind waves on the foundation, the floating fan foundation adopts a cylindrical structure, a counterweight reinforced concrete foundation is built at the bottom in the building process, and the counterweight foundation can be solid or hollow. The bottom plate beam and the apron wall are arranged below the counterweight foundation, and after the counterweight foundation sinks to the seabed, the bottom plate beam and the apron wall are embedded into the seabed under the self-weight action of the foundation so as to increase the frictional resistance between the counterweight foundation and the seabed and prevent the foundation from shifting. The retaining walls are arranged on the periphery of the top plate of the counterweight foundation, and have the functions that sea sand can be backfilled on the counterweight foundation by using the guide pipes after the counterweight foundation is sunk to the sea bed surface and is basically stable, so that the weight of the counterweight foundation is increased, the stability safety of the reinforced concrete fan foundation with the upper floating tension legs is improved, and after the concrete pouring of the counterweight reinforced concrete foundation is finished, the reinforced concrete fan foundation with the upper floating tension legs is built on the counterweight reinforced concrete fan foundation.
The upper floating tension leg reinforced concrete fan foundation 30 and the lower reinforced concrete counterweight foundation 40 may be separated by an isolation film.
Unbonded prestressed steel strands and slowly bonded prestressed steel strands can be buried between the upper floating type tension leg reinforced concrete fan foundation and the lower reinforced concrete counterweight foundation, the upper floating type tension leg reinforced concrete fan foundation, the lower reinforced concrete counterweight foundation and the lower stretched sinking reinforced concrete counterweight foundation are temporarily fixed by adopting the tensioned unbonded prestressed steel strands, the upper floating type tension leg reinforced concrete fan foundation and the lower reinforced concrete counterweight foundation are permanently connected by adopting the tensioned slowly bonded prestressed steel strands, and the condition that the upper floating type tension leg reinforced concrete fan foundation can translate slightly during operation but the lower counterweight reinforced concrete foundation does not shift is ensured.
In order to ensure the durability of the foundation, the upstream surface of the upper floating type tension leg reinforced concrete fan foundation and the lower reinforced concrete counterweight foundation can adopt non-metal fiber reinforced bars as stress bars, and the backside surface can adopt common thread reinforced bars as stress bars, so that the durability is ensured, and the manufacturing cost can be reduced.
The floating fan foundation and the counterweight foundation can be poured by high-strength concrete with the strength of more than C50, and when the concrete of the upper floating tension leg reinforced concrete fan foundation reaches 85% of the design strength, the temporarily fixed unbonded steel stranded wires can be tensioned and locked, so that the upper foundation and the lower foundation are temporarily connected into a whole.
A steel tower cylinder at the bottom of a fan is buried in concrete of an upper floating type tension leg reinforced concrete fan foundation, when the concrete reaches the designed strength, the upper steel tower cylinder can be installed, the fan can be installed after the steel tower cylinder is installed, water can be drained from a dock or a similar dock after the fan is installed, after the upper floating type tension leg reinforced concrete fan foundation and a lower reinforced concrete counterweight foundation combination are floated, the combination is dragged away from a port by a dragging wheel, after the combination is dragged to a wind field installation position to be positioned, three dragging wheels are used for dragging and positioning, and a hydraulic continuous lifting jack is used for tensioning the temporarily fixed unbonded steel stranded wires and sinking the lower reinforced concrete counterweight foundation in a segmented mode.
The steel pipe protective sleeve outside the slow bonding steel strand needs to be lengthened in the process of lowering the lower reinforced concrete counterweight foundation so as to protect the permanently anchored slow bonding steel strand.
The steel pipe protective sleeve joint uses the screwed joint, need to coat with epoxy resin with anticorrosion and waterproof twice in the screw thread and joint seam and steel pipe protective sleeve external surface of joint department, need to suspend and sink to the position that needs to take over, start the oil pump drive jack to continue to descend until sinking to the seabed bottom after the good steel pipe that connects well has done the joint anticorrosion, after the reinforced concrete counter weight basis of lower part levels and is filled up the sea sand and sink steadily, water injection in the basic cavity of upper portion floating tension leg reinforced concrete fan, make the floating tension leg reinforced concrete fan basis of upper portion sink to the surface of water height that the design calculation required, again pretension the slow bonding steel strand wires and stretch. The clamping pieces are locked after being pre-tightened, are compressed by round steel plates and are fixed by bolts, so that the clamping pieces cannot loosen during the operation of the fan, water in a cavity of the reinforced concrete fan foundation with the floating tension legs at the upper part is pumped, the reinforced concrete fan foundation with the floating tension legs at the upper part floats upwards, anchor device clamping pieces of tendon of the tension legs, namely slowly-bonded steel strand are naturally locked to a locking design stress under the action of buoyancy, and then the anchor device at the tensioning end is sealed by micro-expansion high-strength concrete.
According to the invention, the connection reliability between the upper floating tension leg reinforced concrete fan foundation and the lower counterweight reinforced concrete foundation is ensured, the conventional connection adopts the anchor chain as the tension leg tendon, the anchor chain is coated with paint and the anchor chain is self-corrosion-resistant, the durability is not ideal, and the manufacturing cost is high; the second protection is the protection of the slowly-bonded steel strand steel pipe protective sleeve; the third way is high-strength grouting slurry in the steel pipe protective sleeve; the fourth step is a layer of high-density polyethylene plastic pipe with the thickness more than 1mm outside the slow bonding prestressed steel strand; the fifth path is a layer of high-strength retarding adhesive with the thickness of more than 1.5mm wrapped outside the retarded adhesive steel strand.
The steel bars of the upstream face of the floating reinforced concrete universal wind power foundation which can be manufactured and assembled on land adopt corrosion-resistant non-metallic material steel bars, such as glass fiber steel bars, so that the problem of corrosion of chloride ions in seawater to the steel bars is effectively solved.
The floating reinforced concrete universal wind power foundation which can be manufactured and assembled on land has very excellent corrosion resistance, the length of the slow bonding steel strand connected with the upper foundation and the lower foundation can be adjusted to adapt to different seawater depths, the size of the wind turbine foundation and the length of the slow bonding steel strand connected with the upper foundation and the lower foundation can be adjusted according to hydrological data of a sea area and the type of a wind turbine during design, the upper foundation and the lower foundation of the same ocean wind field have the same size, and different water depths can be realized by only adjusting the length of the slow bonding steel strand.
The slow-bonding steel strand used in the invention is a product which is commercially available in the technical field and can be easily purchased in the market.
The floating reinforced concrete universal wind power foundation manufactured and assembled on land can be applied to the field of ocean wind power generation, offshore booster station engineering and small oil production platforms.
The construction process of the floating reinforced concrete universal wind power foundation manufactured and assembled on land is as follows.
1. Installing a counterweight reinforced concrete foundation beam slab template;
2. binding nonmetal steel bars of the counterweight reinforced concrete foundation beam slab, such as glass fiber steel bars;
3. cutting the unbonded steel strand and the slow-bonding steel strand, and manufacturing a fixed-end extrusion anchorage device;
4. installing an unbonded steel strand and a retarded adhesive steel strand, and installing a retarded adhesive steel strand steel pipe protective sleeve;
5. pouring and maintaining the balance weight reinforced concrete foundation beam plate concrete;
6. laying an isolation film on the top of the counterweight reinforced concrete foundation slab;
7. binding reinforcing steel bars of an upper floating type tension leg reinforced concrete fan foundation, adopting nonmetal reinforcing steel bars such as glass fiber reinforcing steel bars on the upstream surface, adopting ordinary thread reinforcing steel bars on the back surface, installing a fan steel tower cylinder embedded in the upper floating type tension leg reinforced concrete fan foundation, binding and wrapping inner and outer ordinary reinforcing steel bars of the steel tower cylinder, and not binding the reinforcing steel bars of a top plate of the upper floating type tension leg reinforced concrete fan foundation;
8. pouring concrete on the upper floating tension leg reinforced concrete fan foundation except for the top plate;
9. installing a top plate template of the reinforced concrete fan foundation with the upper floating type tension leg;
10. binding steel bars of a top plate of a reinforced concrete fan foundation with upper floating tension legs, wherein non-metal steel bars are adopted on the upstream surface, and common thread steel bars are adopted on the backside surface; and installing the anchor backing plate at the stretching end of the slowly-bonded and unbonded steel strand.
11. Pouring and maintaining concrete on the top plate of the reinforced concrete fan foundation with the upper floating tension leg;
12. after the concrete strength of the top plate of the reinforced concrete fan foundation with the upper floating tension leg reaches 85% of the design strength, starting to install a fan steel tower cylinder;
13. after the concrete strength of the top plate of the upper floating tension leg reinforced concrete fan foundation reaches 85% of the design strength, tensioning unbonded prestressed steel strands to combine and connect the upper floating tension leg reinforced concrete fan foundation and the lower counterweight reinforced concrete foundation into a whole;
14. after the fan steel tower cylinder is installed at a designed height, hoisting a fan to form an integral combined foundation;
15. injecting water into the dock or the similar dock, and after the integral combined foundation is completely floated, opening a gate of the dock or the similar dock and towing the assembled fan foundation out of the dock by using a towing ship;
16. dragging the integral combined fan foundation to an installation wind field by using three tugs, wherein one of the three tugs mainly tows, and two of the three tugs are arranged on two sides to assist in towing;
17. after the integral combined fan foundation is accurately positioned, a hydraulic continuous lifting jack is adopted to stretch a temporarily fixed unbonded steel strand to sink the lower counterweight reinforced concrete foundation in a segmented manner, a slow bonding steel strand needs to be continuously lengthened to protect a steel pipe sleeve in the sinking process, the length of the steel pipe connected to each position is consistent, and whether the counterweight reinforced concrete foundation is kept horizontal after sinking to the seabed or not can be found through the length of the exposed steel pipe;
18. after the counterweight reinforced concrete foundation is sunk in place, if the counterweight foundation is found to be not horizontal, the pressure distribution of the foundation laid on the seabed can be adjusted by stretching the unbonded prestressed steel strands, the compressive stress of the small subsidence part is increased, the settlement is gradually adjusted to be basically consistent, if the counterweight foundation is still uneven by the method, the position with small subsidence can be filled with sea sand through a guide pipe to be pressed and weighted to be leveled, and after the counterweight foundation is adjusted to be basically horizontal, the clamping pieces of the unbonded prestressed tendons can be loosened to fill the sea sand to the top surface of the counterweight foundation through the sleeve pipe until the clamping pieces are filled with the sea sand to increase the weight of the counterweight foundation.
19. Injecting water into the cavity of the foundation from a water injection port of a top plate of the foundation of the upper floating type tension leg reinforced concrete fan, so that the height of the foundation of the upper floating type tension leg reinforced concrete fan, which is exposed out of the water surface, is lowered to the designed and calculated elevation;
20. installing a retarded adhesive steel strand anchorage, and tensioning each retarded adhesive steel strand and locking a clamping piece by using a tensioning force which is about 2-3 times the weight of each retarded adhesive steel strand;
21. pumping water in a cavity of the foundation from a water filling port of a top plate of the reinforced concrete fan foundation with the upper floating tension leg, wherein the reinforced concrete fan foundation with the upper floating tension leg generates a tendency of upward floating under the action of buoyancy, and naturally locking the slowly-bonded steel strands to enable the steel strands to generate tensile stress;
22. pouring high-strength grouting material into the slowly-bonded steel strand steel pipe protective sleeve through a grouting hole arranged near the anchor at the tensioning end, and pouring high-strength grouting material into a gap between the slowly-bonded steel strand steel pipe protective sleeve and the foundation steel strand preformed hole of the upper floating tension leg reinforced concrete fan;
23. installing a loosening-proof pressing plate of a clamping piece of a slow bonding steel strand anchorage device, and fixing the loosening-proof pressing plate and a tensioning-end anchor backing plate together by using bolts;
24. and the anchorage device at the tensioning end is sealed by adopting high-strength micro-expansion concrete, so that the installation of the whole tension leg fan reinforced concrete foundation is completed, and the debugging and grid-connected power generation can be carried out.
The above embodiments are merely exemplary, and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and substitutions are intended to be within the scope of the invention.
Claims (10)
1. The floating reinforced concrete universal wind power foundation is characterized by further comprising an upper floating tension leg reinforced concrete fan foundation, a lower counterweight reinforced concrete foundation and a tension leg tendon connecting the upper floating tension leg reinforced concrete fan foundation and the lower counterweight reinforced concrete foundation, wherein the tension leg tendon is a slow bonding steel strand applied with tension force, the wind power generator is positioned at the top of the fan reinforced concrete tower, and the bottom of the fan reinforced concrete tower is connected to the upper floating tension leg reinforced concrete fan foundation.
2. The floating reinforced concrete universal wind power foundation according to claim 1, wherein the bottom of the fan tower is embedded in the concrete of the upper floating tension leg reinforced concrete fan foundation.
3. The floating reinforced concrete universal wind power foundation according to claim 1, wherein the periphery of the slowly-bonded steel strands is provided with a steel pipe protective sleeve, and grouting slurry is arranged in a gap between the steel pipe protective sleeve and the slowly-bonded steel strands.
4. The floating reinforced concrete universal wind power foundation according to claim 1 or 3, wherein the length of the tension leg tendon is adjusted to adapt to different ocean depths and seabed conditions.
5. The floating reinforced concrete universal wind power foundation according to claim 1, wherein the upper floating tension leg reinforced concrete fan foundation comprises a top plate, a bottom plate, an outer wall, reinforced concrete wrapped outside a fan steel tower cylinder, and an inner cavity separation reinforced concrete shear wall.
6. The floating reinforced concrete universal wind power foundation according to claim 5, wherein the top plate is provided with a water injection and pumping inspection hole.
7. The floating reinforced concrete universal wind power foundation according to claim 5, wherein the inner side of the outer wall is provided with reinforced concrete retaining wall posts.
8. The floating reinforced concrete wind-universal electric foundation according to claim 1, wherein the tension-end anchor head of the slow-bonding steel strand comprises an anchor backing plate, an anchor plate fixing anchor bar, a tension-end clip anchor, an anchor clip anti-loosening pressure plate fixing bolt fixed on the anchor plate, a grouting pipe and top micro-expansion high-strength anchor sealing concrete.
9. The floating reinforced concrete universal wind power foundation according to claim 1, wherein the lower counterweight reinforced concrete foundation comprises a counterweight reinforced concrete foundation bottom plate beam, counterweight reinforced concrete foundation upper and lower retaining walls, a counterweight reinforced concrete foundation bottom plate and ballast sea sand on the counterweight reinforced concrete foundation bottom plate.
10. The floating reinforced concrete universal wind power foundation according to claim 1, wherein fixed end extrusion anchorages are arranged at the lower fixed ends of the unbonded steel strands and the slowly-bonded steel strands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211150547.0A CN115339581A (en) | 2022-09-21 | 2022-09-21 | Floating type reinforced concrete universal wind power foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211150547.0A CN115339581A (en) | 2022-09-21 | 2022-09-21 | Floating type reinforced concrete universal wind power foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115339581A true CN115339581A (en) | 2022-11-15 |
Family
ID=83956771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211150547.0A Pending CN115339581A (en) | 2022-09-21 | 2022-09-21 | Floating type reinforced concrete universal wind power foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115339581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745523A (en) * | 2022-12-05 | 2023-03-07 | 江苏超力建材科技有限公司 | Preparation method and application of floating type foundation prestressed grouting material |
-
2022
- 2022-09-21 CN CN202211150547.0A patent/CN115339581A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745523A (en) * | 2022-12-05 | 2023-03-07 | 江苏超力建材科技有限公司 | Preparation method and application of floating type foundation prestressed grouting material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20190263477A1 (en) | Method of Assembling A Floating Wind Turbine Platform | |
| KR102155394B1 (en) | Floating offshore wind power generation facility | |
| CN103362113B (en) | Offshore wind farm, bridge and marine works local buoyancy ocean platform and construction method | |
| WO2013044978A1 (en) | Method of building an offshore power storage facility and corresponding offshore power storage facility | |
| US20160376762A1 (en) | Construction method for planting hollow columns in a seabed of a marine environment for supporting waterborne structures thereon | |
| CN111254984B (en) | Pipe joint connecting structure of underwater cable-stayed suspension tunnel | |
| CN113389222B (en) | Suspension tunnel structure | |
| CN103255752B (en) | Support the buoyant support fixed platform of offshore wind turbine, marine works | |
| CN115339581A (en) | Floating type reinforced concrete universal wind power foundation | |
| JPS6149029A (en) | Underwater foundation fixer | |
| WO2022127466A1 (en) | Novel offshore wind turbine foundation suitable for shallow covering layer and construction method therefor | |
| WO2013044977A1 (en) | A wall element system for an offshore power storage facility | |
| CN105908772B (en) | The construction method of offshore wind turbine gravity type foundation, basic system and gravity type foundation | |
| CN208763050U (en) | Offshore wind turbine gravity caisson basis | |
| WO2013044976A1 (en) | A set of building elements for an offshore power storage facility | |
| CN105257315A (en) | Anti-floating structure for underground tunnel | |
| KR20140128958A (en) | Floating precast-concrete structure for supporting a wind turbine | |
| CN1408958A (en) | Flexible dam with aid of buoyancy and its construction method | |
| CN218317192U (en) | Floating type reinforced concrete universal wind power foundation | |
| CN216515566U (en) | Tension type single-point mooring combined anchorage structure based on spiral anchor | |
| CN111197319A (en) | Multidirectional prestress prefabricated assembled beam slab foundation of wind power generation tower | |
| KR102138839B1 (en) | Cast-in-place concrete blocks using large scales and revetment methods using them | |
| CN205776313U (en) | A kind of offshore wind farm doleiform gravity type foundation | |
| CN111485579A (en) | Bridge-tunnel transition conversion structure between suspension tunnel and deepwater suspension bridge | |
| CN113605430B (en) | Caisson construction structure utilizing communicating vessels and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |