CN213981055U - Prestressed hollow sandwich concrete-filled steel tube lattice type hybrid tower - Google Patents
Prestressed hollow sandwich concrete-filled steel tube lattice type hybrid tower Download PDFInfo
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- CN213981055U CN213981055U CN202021920138.0U CN202021920138U CN213981055U CN 213981055 U CN213981055 U CN 213981055U CN 202021920138 U CN202021920138 U CN 202021920138U CN 213981055 U CN213981055 U CN 213981055U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
- Y02E10/728—Onshore wind turbines
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Abstract
The utility model discloses a mixed pylon of prestressing force cavity intermediate layer steel pipe concrete lattice formula relates to land and offshore wind power generation technical field. The system comprises a fan, a steel tower cylinder, a tower transition section, a lattice tower and a foundation. The foundation is accurately positioned by adopting an embedded part standard part; the corner posts of the lattice tower are connected with embedded parts in the foundation through bolts; four I-shaped steel sections are arranged on the periphery of the lower end of the steel tower cylinder; the tower frame transition section is composed of four box-shaped beams filled with concrete and is connected with four I-shaped steel sections at the lower end of the steel tower cylinder; the fan is arranged on the steel tower drum; the lattice tower can be triangular or quadrangular, the corner columns are all made of hollow sandwich steel pipe concrete, the hollow part is a tensioning prestressed tendon pore channel, the length of each component is a standardized size, and the components are connected by flanges; the cross rods and the inclined rods in the lattice type tower frame are made of concrete filled steel tubes, and all the components are connected through connecting plates and bolts.
Description
Technical Field
The utility model relates to a land and offshore wind power generation technical field.
Background
The wind power energy is a clean energy which is pollution-free and renewable. Compared with onshore wind power energy, the offshore wind power energy has the advantages of high fan power generation amount, larger single installed capacity, more stable fan operation, no land occupation for construction of wind power plants and the like, and has recently come to be widely concerned by national energy departments and industries.
In recent years, the size of a fan is getting larger, the height and the diameter of a required tower barrel are also getting larger, a solid-web steel-concrete tower barrel is mostly adopted in the traditional fan, the production cost is higher, the production process is complex, the labor requirement is high, and the production efficiency is low. The on-site assembling, grouting and hoisting periods are too long, part of parts need to be transported in an overrun mode, the requirement on storage sites is high, the production quality is not easy to control, and the component cost difference is serious. The production supply chain is long and is easily influenced by price fluctuation of various industries.
Therefore, in order to fully develop wide land and ocean wind energy resources in China, reduce the load and material consumption of the tower drum, simplify engineering implementation procedures and processes, reduce labor force requirements, shorten installation and construction time and reduce hoisting cost, the structural form of the traditional tower drum is improved, light weight design is carried out on parts, and the tower drum form with optimal performance, cost and quality is developed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses synthesize and provide a mixed pylon of prestressing force cavity intermediate layer steel pipe concrete lattice formula: the upper part is a steel tower cylinder, and the lower part is a lattice tower, so that the size of the component is reduced, and the wind load on the tower is obviously reduced. Each rod piece in the lattice tower mainly bears the axial force, and the strength of the material is fully exerted. The angle column of the lattice type tower adopts prestressed hollow interlayer steel pipe concrete, the use amount of steel and concrete is reduced while the rigidity is increased, the weight of each component is reduced, the transportation and the hoisting are convenient, the hollow part is used as a prestressed pore passage and is integrally tensioned along the full length of the height, and the stability and the tensile property of the structure are improved. The transverse and oblique members are made of steel tube concrete, so that the compression resistance and the tensile resistance of steel materials of the concrete are fully exerted. The structure is simple, the vertical stability and the overall stability are good, and the tower is a brand new fan tower form. The structural system is completely assembled and constructed, and all components are produced in a standardized way in engineering or on site, so that the construction efficiency is obviously improved, the construction quality is ensured, and the construction measure cost is reduced.
The technical scheme of the utility model as follows:
a prestressed hollow sandwich concrete-filled steel tube lattice type hybrid tower comprises a fan, a steel tower tube, a tower transition section, a lattice type tower and a foundation. The foundation is accurately positioned by adopting an embedded part standard part manufactured by a factory; the corner posts of the lattice tower are connected with embedded parts in the foundation through bolts; the top of the lattice tower is connected with the tower transition section; the tower transition section is connected with the steel tower barrel; the steel tower cylinder is connected with the fan.
The embedded part standard part in the foundation is a steel pipe prefabricated part with a cover plate, a preformed hole is formed in the cover plate, a bottom nut and a screw rod are embedded in advance, and concrete is poured after accurate positioning and installation.
The corner post in the lattice type tower adopts prestressed hollow sandwich steel pipe concrete, and the hollow part is used as a prestressed duct. The cross rod and the inclined rod are made of concrete filled steel tubes, the end plate is embedded with connecting pieces and connected with other rod pieces through bolts, one inclined rod is disconnected at the intersection of the inclined rods, and the inclined rods are connected through connecting plates at the intersection of the inclined rods through bolts.
The tower transition section is 4 box-shaped steel pipe concrete beams. The cross section of the joint of the tower transition section and the corner column of the lattice tower is the same as that of the corner column, the middle section is box-shaped steel tube concrete, round penetrating holes are uniformly distributed on the side face, the diameter of each penetrating hole is 1/3-1/2 of the height of the cross section of the I-shaped steel, and the adverse effects of hoisting weight and wind load are reduced; the joint with the steel tower cylinder is transited to the I-shaped section from the end plate and is in bolt connection with the I-shaped steel on the steel tower cylinder. And after the tower transition section is installed, performing prestress tension from the foundation to the top of the tower transition section.
The utility model discloses following beneficial effect has for prior art:
(1) the overall structure adopts the form that a steel tower section of thick bamboo and lattice formula pylon combine, when avoiding wheel hub height higher, adopts the anti side rigidity of a pure steel tower section of thick bamboo lower, the amplitude is great, easily takes place resonance with the unit, seriously damages cabin equipment, collapses (local stability is poor) even, causes huge economic loss, and be perishable, and the maintenance cost is high. The combination of the steel tower cylinder and the lattice tower meets the frequency relative deviation regulation, and resonance can not occur.
(2) The foundation is positioned by adopting the factory prefabricated embedded parts, so that the accurate positioning can be realized, and the site construction efficiency is improved.
(3) Each rod piece in the lattice type tower adopts a standardized size, so that the production and processing efficiency is improved. The structure form is simple, and the installation is convenient. The prestressed hollow sandwich concrete-filled steel tube and the concrete-filled steel tube are adopted, the prestress enables the whole section of the concrete-filled steel tube to be pressed, the steel tube forms a constraint effect on the concrete, and the strength and the ductility of the concrete are improved. The lattice tower converts a bending mode of a single component into an axial force acting mode of a corner component, reduces the material consumption and fully utilizes the material strength. Meanwhile, the lattice tower has small wind load area, and the influence of wind load is obviously reduced.
(4) The node position that each member links to each other with the corner post adopts football shape annular stiffening rib, with the effectual transmission of local tensile stress to the corner post steel pipe all around, make full use of annular stiffening rib to the enhancement of node, reduce the waste of material and be convenient for transport.
(5) The tower transition section adopts the piece type, so that the hoisting weight is effectively reduced, the hoisting efficiency is improved, the tower transition section and the lattice tower are integrally subjected to prestress tensioning, and the structural integrity, stability and node connection effectiveness are improved. The tower transition section is connected with the lattice tower and the steel tower cylinder through bolts, so that the on-site construction efficiency is improved, and the on-site construction quality is ensured.
(6) Radial stiffening ribs with the height being twice of the diameter of the outer layer steel pipe are uniformly arranged between the two layers of steel pipes at the prestress tensioning end and the anchoring end along the periphery to reinforce the part with large local stress.
(7) The prestressed penetrating steel sleeve is pre-embedded and assembled in a factory, vertical poles are vertically erected in the factory or on site, self-compacting concrete is poured, and pouring support standard components are connected through bolts and can be repeatedly used. The structure system adopts an assembly construction mode, so that the construction efficiency is obviously improved, the construction quality is ensured, and the construction measure cost is reduced.
Drawings
FIG. 1 is a schematic view of a prestressed hollow sandwich concrete filled steel tube quadrilateral lattice hybrid tower;
FIG. 2 is a schematic view of a prestressed hollow sandwich concrete filled steel tube triangular lattice type hybrid tower;
FIG. 3 is a schematic view of an embedded part standard;
FIG. 4 is a schematic view of a single layer lattice tower;
FIG. 5 is a schematic plan view of a corner post junction;
FIG. 6 is a three-dimensional view of a radial stiffener at the tensioned anchoring end of a corner post;
FIG. 7 is a schematic view of a steel tower bottom connection;
FIG. 8 is a schematic view of a tower transition section;
FIG. 9 is a schematic view of the internal construction of a tower transition section;
FIG. 10 is a schematic view of a factory or cast-in-place platform;
in the figure: 1-a fan, 2-a steel tower cylinder, 3-a tower transition section, 4-a lattice tower, 5-a foundation, 6-an embedded part standard part, 7-a corner post, 8-a cross bar, 9-an inclined bar, 10-a flange, 11-a radial stiffening rib, 12-an end connecting plate, 13-an I-shaped steel and 14-a bolt, 15-end plate, 16-T type stiffening rib, 17-round through hole, 18-rugby ball type annular stiffening rib, 19-pouring platform, 20-prestressed pore canal, 21-embedded part screw rod, 22-embedded part screw cap, 23-steel tower cylinder vertical stiffening rib, 24-steel tower cylinder annular stiffening rib, 25-inclined rod crossing connecting plate, 26-prestressed rib and 27-steel pipe concrete cantilever beam.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, a prestressed hollow sandwich steel tube concrete lattice type hybrid tower relates to the technical field of onshore and offshore wind power generation. The system comprises a fan (1), a steel tower cylinder (2), a tower transition section (3), a lattice tower (4) and a foundation (5). The foundation (5) is accurately positioned by adopting an embedded part standard part (6) manufactured in a factory; the corner posts (7) in the lattice tower (4) are connected with the embedded part standard parts (6) in the foundation (5), and the lattice tower can be designed into a quadrilateral lattice tower or a triangular lattice tower; the tower transition section (3) is connected with the lattice tower (4); the lower end of the steel tower barrel (2) is connected with a tower frame transition section (3); the fan (1) is arranged at the upper end of the steel tower cylinder (2).
As shown in fig. 3, the embedded part standard parts (6) are placed on the foundation for accurate positioning, and after concrete is poured for fixing, the corner posts (7) in the lattice tower (4) are connected with the embedded part standard parts (6) in the foundation (5). The embedded part standard part (6) is a steel pipe prefabricated part with a cover plate, the thickness of the cover plate is 20mm to 30mm, and a bottom screw cap (22) and a screw rod (23) are embedded in advance.
As shown in fig. 4, the lattice tower (4) is composed of corner posts (7), cross bars (8) and diagonal bars (9). The steel pipes are all purchased from finished threaded steel pipes, the steel strength grades are Q390, Q420 and Q460, the concrete strength grades are C50-C80, and the thickness of the steel pipes is 8-16 mm. The corner posts (7) are all vertical to the ground, the diameter of the bottom corner post (7) is 1-1.5 m, the diameter of each two layers is changed once, and the diameter change rate is not more than 10%. The corner columns (7) are connected through flanges (10), and arcs of the rugby-shaped annular stiffening ribs are determined through tangents of the outer diameter and the inner diameter respectively, so that the use of steel is reduced, and the transportation is facilitated. The cross rod (8) and the inclined rod (9) are in bolt connection with the corner post (7) through end connecting plates (12), the insertion depth of the end connecting plates (12) is 1.0-1.5 times of the diameter of the cross rod (8) or the inclined rod (9), and the end connecting plates (12) are connected with the steel pipe through fillet welds. Only one inclined rod (9) is disconnected at the intersection of the two inclined rods (9), and the bolts (14) are connected through connecting plates (25) penetrating through the intersection of the inclined rods and adopt M30 friction type high-strength bolts.
As shown in figure 5, the hollow part in the corner post (7) is used as a tensioning duct (20) of the prestressed tendon (26), so that the corrosion and the prestress loss of the prestressed tendon (26) are effectively reduced, and the integrity of the truss is enhanced.
As shown in figure 6, the tensioning anchoring end of the corner post (7) is locally reinforced by radial stiffening ribs (11) uniformly distributed on the periphery. The height of the stiffening rib is twice of the diameter of the outer layer steel pipe, and the thickness of the stiffening rib does not exceed 1.2 times of the wall thickness of the steel pipe.
As shown in fig. 7, the length of the connecting end of the steel tower barrel is 16-20 m, the inner part of the connecting end is provided with an annular stiffening rib (24) and a vertical stiffening rib (23) at the position corresponding to the I-shaped flange and the web plate, and when the installation of the tower transition section (3) at the top of the lattice tower (4) is completed, the integral prestress tensioning is carried out. Circular penetrating holes (17) with the diameter being one third of the box-shaped height are uniformly distributed on the side face of the tower transition section (3), and the hoisting weight and the wind load influence are reduced.
As shown in figure 8, the tower transition section (3) adopts a box-shaped steel pipe concrete cantilever beam (27), and the section of the connection section of the lattice tower (4) is the same as that of the corner post (7).
As shown in fig. 9, the connecting end of the tower transition section (3) and the steel tower tube is an i-shaped steel (13) and is transited by an end plate (15) and an internal T-shaped stiffening rib (16).
As shown in fig. 10, both the hollow sandwich concrete and the concrete filled steel tube used in the lattice tower (4) can be mass produced in a factory or on site by building a casting platform (19). The pouring platform (19) adopts a supporting standard component, is connected by full bolts and can be repeatedly used.
The specific production and installation method comprises the following steps:
prefabricating a basic embedded part standard part (6) in a factory, purchasing spiral steel pipe products and completing welding work of a radial stiffening rib (11), an end connecting plate (12), an inclined rod cross connecting plate (25), a vertical stiffening rib (23) inside a steel tower cylinder and an annular stiffening rib (24); a pouring platform (19) is built by using pouring support standard parts in a factory or on site, hollow sandwich steel pipe concrete and steel pipe concrete components are poured, and the corner columns (7), the cross rods (8) and the inclined rods (9) in the lattice type tower frame (4) are manufactured; the standard part (6) of the basic embedded part is used for positioning accurately and then fixing; hoisting corner posts (7), cross rods (8) and inclined rods (9) in the lattice type tower (4) and connecting the corner posts (7) with bolts, wherein the mounting of plumbs is kept for the corner posts (7); after the lattice tower is formed, hoisting a tower transition section (3), and connecting the tower transition section (3) with the corner post (7) through a bolt; then tensioning the prestressed tendons (26) from the surface of the foundation (5) to the top surface of the tower transition section (3); hoisting a steel tower barrel (2), aligning four I-shaped steel sections (13) at the lower part of the steel tower barrel (2) with a tower frame transition section (3) and then connecting the four I-shaped steel sections with bolts; and finally, installing the fan (1) of the steel tower barrel (2).
Claims (5)
1. A prestressed hollow sandwich steel pipe concrete lattice type hybrid tower relates to the technical field of land and offshore power generation; the tower comprises a fan (1), a steel tower cylinder (2), a tower transition section (3), a lattice tower (4) and a foundation (5); the method is characterized in that the foundation (5) is accurately positioned by adopting an embedded part standard part (6) manufactured in a factory; the corner columns (7) in the lattice tower (4) are connected with embedded part standard parts (6) in the foundation (5), and the corner columns (7) are all kept in plumb installation; the tower transition section (3) is connected with the lattice tower (4); the lower end of the steel tower barrel (2) is connected with a tower frame transition section (3); after the lattice tower (4) is assembled, stretching prestressed tendons (26) in the corner columns (7) in a through-length mode; the fan (1) is arranged at the upper end of the steel tower barrel (2); the shape formed by connecting the circle centers of all the corner columns (7) is square or triangle.
2. The prestressed hollow sandwich concrete-filled steel tube lattice hybrid tower of claim 1, wherein: the embedded part standard part (6) placed in the foundation (5) is a steel pipe prefabricated part with a cover plate, the thickness of the cover plate is 20mm to 30mm, a bottom screw cap (22) and a screw rod (21) are embedded in advance, and the embedded part standard part (6) is connected with an angle post (7) in the lattice tower (4) through a bolt (14); the length of a corner post (7) in the lattice type tower frame (4) is between 10 meters and 14 meters, the diameter of the section of the corner post is gradually reduced along the height, the diameter of each two layers is changed once, the diameter change rate is not more than 10 percent, the corner post (7) is prestressed hollow interlayer steel pipe concrete, the hollow part is a prestressed duct (20), a post-tensioning method is adopted, prestressed steel strands are adopted as prestressed reinforcements (26), integral tensioning is carried out after the tower frame transition section (3) is installed, and both a cross rod (8) and an oblique rod (9) in the lattice type tower frame (4) are made of steel pipe concrete; the tower transition section (3) adopts a box-shaped steel pipe concrete cantilever beam (27), and the end part of the cantilever beam is welded with an I-shaped steel (13).
3. The prestressed hollow sandwich concrete-filled steel tube lattice hybrid tower as recited in claim 2, wherein: the corner columns (7) in the lattice tower (4) are connected by flanges (10); tensioning and anchoring ends of corner columns (7) in the lattice type tower frame (4) are uniformly provided with 4-8 radial stiffening ribs (11) with the length being 1.5 times to 2.5 times of the outer diameter length of the steel pipe along the annular direction; the cross rod (8) and the diagonal rod (9) in the lattice tower (4) are connected with the corner post (7) through welded end connecting plates (12) in a bolt connection mode (14), the insertion depth of the end connecting plates (12) is 1.0-1.5 times of the diameter of the cross rod (8) or the diagonal rod (9), the end connecting plates (12) are connected with the steel pipe through fillet welds, one diagonal rod is disconnected at the intersection of the diagonal rods (9), the bolt connection mode (14) is carried out through a connecting plate (25) penetrating through the other diagonal rod, the width of the connecting plate (25) penetrating through the diagonal rod (9) is 0.7-0.8 times of the diameter of the diagonal rod (9), and the length of the connecting plate is 2.5-3.0 times of the diameter of the diagonal rod; four I-shaped steel sections (13) are welded at the lower end of the steel tower tube (2), the length of a connecting part at the lower end of the steel tower tube is 16-20 m, and annular stiffening ribs (24) and vertical stiffening ribs (23) are arranged at positions corresponding to flanges and webs of the I-shaped steel sections (13); the steel tower barrel (2) is connected with the tower transition section (3) through bolts (14); the tower transition section (3) is formed by welding an end plate (15) and welding a T-shaped stiffening rib (16) inside a box-shaped steel tube concrete cantilever beam (27) to complete the transition from the box shape to the I-shaped steel (13), a circular penetrating hole (17) is arranged on the side face of the box-shaped steel tube concrete cantilever beam (27), and the diameter of the hole is 1/3-1/2 of the section height of the I-shaped steel (13).
4. The prestressed hollow sandwich concrete-filled steel tube lattice hybrid tower as recited in claim 3, wherein: the upper end and the lower end of a corner post (7) in the lattice tower (4) of an end connecting plate (12) are provided with olive-shaped annular stiffening ribs (18); and the bolt connection (14) positions are all connected by adopting friction type bolts.
5. The prestressed hollow sandwich concrete-filled steel tube lattice hybrid tower as recited in claim 3, wherein: the hollow sandwich concrete filled steel tube and the concrete filled steel tube limb in the lattice tower (4) both adopt a standardized mass production pouring platform (19), the production pouring platform consists of a plurality of steel structure support standard parts, and the steel structure support standard parts are connected by full bolts and can be repeatedly used; the welding of the I-shaped steel (13), the end connecting plate (12) and the connecting plate (25) at the cross position of the inclined rod is finished in a factory; the bolted connections (14) are all made on site.
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| CN202021920138.0U CN213981055U (en) | 2020-09-03 | 2020-09-03 | Prestressed hollow sandwich concrete-filled steel tube lattice type hybrid tower |
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| CN202021920138.0U CN213981055U (en) | 2020-09-03 | 2020-09-03 | Prestressed hollow sandwich concrete-filled steel tube lattice type hybrid tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177857A (en) * | 2020-09-03 | 2021-01-05 | 重庆大学 | Prestressed hollow sandwich concrete-filled steel tube lattice type hybrid tower and production and installation method thereof |
| CN114059447A (en) * | 2021-11-25 | 2022-02-18 | 四川省公路规划勘察设计研究院有限公司 | Steel pipe concrete bridge tower and construction method thereof |
| CN114939919A (en) * | 2022-03-28 | 2022-08-26 | 上海市机电设计研究院有限公司 | Reverse pouring construction method for concrete tower barrel transition section barrel section |
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2020
- 2020-09-03 CN CN202021920138.0U patent/CN213981055U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177857A (en) * | 2020-09-03 | 2021-01-05 | 重庆大学 | Prestressed hollow sandwich concrete-filled steel tube lattice type hybrid tower and production and installation method thereof |
| CN114059447A (en) * | 2021-11-25 | 2022-02-18 | 四川省公路规划勘察设计研究院有限公司 | Steel pipe concrete bridge tower and construction method thereof |
| CN114939919A (en) * | 2022-03-28 | 2022-08-26 | 上海市机电设计研究院有限公司 | Reverse pouring construction method for concrete tower barrel transition section barrel section |
| CN114939919B (en) * | 2022-03-28 | 2024-02-23 | 上海市机电设计研究院有限公司 | Reverse pouring construction method for concrete tower barrel transition section shell ring |
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