CN216111116U - A steel-concrete composite structure transition section of a wind turbine - Google Patents
A steel-concrete composite structure transition section of a wind turbine Download PDFInfo
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- CN216111116U CN216111116U CN202122428039.1U CN202122428039U CN216111116U CN 216111116 U CN216111116 U CN 216111116U CN 202122428039 U CN202122428039 U CN 202122428039U CN 216111116 U CN216111116 U CN 216111116U
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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
- Y02E10/72—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
本实用新型公开了一种风力发电机组的钢‑混凝土组合结构转接段，涉及陆上风力发电技术领域。该转接段包括外钢壳、内钢壳、外侧短加劲肋、内侧短加劲肋、抗剪栓钉、环向钢筋、径向拉筋、夹层混凝土，所述转接段上部与钢塔筒底部通过长螺杆进行螺栓连接，所述转接段下部通过灌浆的方式与混凝土塔筒顶部连接，并通过张拉预应力钢绞线压紧连接界面。将本实用新型应用到钢‑混凝土混合塔筒结构中，将有效改善转接段的受力性能，减少材料用量并降低施工成本。
The utility model discloses a steel-concrete composite structure transition section of a wind power generating set, which relates to the technical field of onshore wind power generation. The transition section includes an outer steel shell, an inner steel shell, an outer short stiffener, an inner short stiffener, shear studs, circumferential reinforcing bars, radial ties, and interlayer concrete. The upper part of the transition section is connected to the steel tower. The bottom is bolted with long screws, the lower part of the transition section is connected with the top of the concrete tower by grouting, and the connection interface is compressed by tensioning prestressed steel strands. The application of the utility model to the steel-concrete mixed tower structure will effectively improve the force-bearing performance of the transition section, reduce the amount of materials and reduce the construction cost.
Description
Technical Field
The utility model relates to a land wind power generation technical field.
Background
In order to reduce the wind abandon rate and the wind power transportation cost and improve the market competitiveness of wind power energy, the center of gravity of wind power energy development in China is shifted from a high wind speed area to a low wind speed area, and higher requirements are put forward on the installed capacity and the hub height of a wind driven generator. The steel-concrete hybrid tower cylinder is a tower cylinder form developed in recent years, overcomes the defects of small rigidity, outstanding stability problem, low economic height, heavy weight and long construction period of a concrete tower cylinder, and is widely applied to low wind speed areas.
In the steel-concrete hybrid tower cylinder, the adapter section is an important member for connecting the upper steel tower cylinder and the lower concrete tower cylinder, and has the characteristic of complex stress, while the traditional reinforced concrete adapter section has the defects of complex manufacturing process, long construction period, easy surface crack generation and the like. Accordingly, there is a need to develop a hybrid tower transition segment that has good stress performance and is easy to construct.
SUMMERY OF THE UTILITY MODEL
The technical problem is as follows: the utility model provides a mixed tower section of thick bamboo combination formula switching section with good atress performance and construction are convenient.
The technical scheme is as follows: the utility model discloses a wind generating set's steel-concrete composite construction switching section contains outer box hat, interior box hat, outside short stiffening rib, inboard short stiffening rib, shear pin, hoop reinforcing bar, radial lacing wire, intermediate layer concrete, outer box hat and interior box hat are placed with one heart, the intermediate layer concrete is located the cavity between outer box hat and the interior box hat, prestressing force pore canal and long screw rod pore are reserved to the intermediate layer concrete inside, switching section upper portion and steel tower bobbin base portion carry out bolted connection through the long screw rod, the switching section lower part is connected through the mode of grout and concrete tower bobbin top to compress tightly interface through stretch-draw prestressing force stranded wire.
Further, the utility model discloses a wind generating set's steel-concrete composite construction switching section, its characterized in that: the outer steel shell is composed of an outer steel shell vertical section and an outer steel shell inclined section, and the inner steel shell is composed of an inner steel shell vertical section, an inner steel shell horizontal section and an inner steel shell skirt edge.
Further, the utility model discloses a wind generating set's steel-concrete composite construction switching section, its characterized in that: the horizontal section of the inner steel shell is reserved with a prestress hole and a long screw hole so that a long screw and a prestress steel strand can pass through the horizontal section, the diameter of the circumference of the prestress hole is smaller than that of the circumference of the long screw hole, and the shear-resistant studs are uniformly arranged on the inner side of the outer steel shell and the outer side of the inner steel shell.
Further, the utility model discloses a wind generating set's steel-concrete composite construction switching section, its characterized in that: the outer short stiffening ribs are uniformly welded on the inner side of the outer steel shell along the annular direction, the inner short stiffening ribs are uniformly welded on the outer side of the inner steel shell along the annular direction, outer stiffening rib holes and inner stiffening rib holes which can be penetrated by annular reinforcing steel bars or radial pulling bars are reserved on the outer short stiffening ribs and the inner short stiffening ribs respectively, and the positions of the outer stiffening rib holes and the inner stiffening rib holes correspond to each other in the height direction.
Further, the utility model discloses a wind generating set's steel-concrete composite construction switching section, its characterized in that: the length of the hoop reinforcing steel bars and the length of the radial lacing bars are not less than 12D, wherein D is the diameter of the reinforcing steel bars, no hook is arranged at the end parts of the hoop reinforcing steel bars, two adjacent outer short stiffening ribs or inner short stiffening ribs are connected, right-angle hooks are arranged at the end parts of the radial lacing bars, the outer short stiffening ribs and the inner short stiffening ribs in the same radial direction are connected, the hoop reinforcing steel bars and the radial lacing bars are arranged in a staggered mode along the height direction according to design requirements, and the direction of the hook of the radial lacing bars is arranged in a staggered mode along the height direction.
Further, the utility model discloses a wind generating set's steel-concrete composite construction switching section, its characterized in that: the end part of the annular steel bar is not provided with a hook, two adjacent outer short stiffening ribs or inner short stiffening ribs are connected, the end part of the radial lacing wire is provided with a right-angle hook, the outer short stiffening ribs and the inner short stiffening ribs in the same radial direction are connected, the annular steel bar and the radial lacing wire are arranged in a staggered mode along the height direction according to design requirements, and the direction of the radial lacing wire hooks is arranged in a staggered and opposite mode along the height direction.
Has the advantages that: the utility model discloses compared with prior art have following advantage:
(1) the utility model discloses a combination formula switching section compares in traditional reinforced concrete switching section, has that the appearance is pleasing to the eye, construction convenience, construction quality are high advantage. The steel member in the utility model can be prefabricated and welded in the factory; the short stiffening ribs are provided with holes for the lacing wires to pass through, so that the positioning and the installation of the lacing wires are convenient; need not to dispose the reinforcing bar in the intermediate layer concrete, avoided loaded down with trivial details reinforcement process, both guaranteed construction quality and also improved the efficiency of construction.
(2) The utility model discloses an interior steel casing and outer steel casing of combination formula switching section are connected through inside and outside short stiffening rib and radial lacing wire, and the shear bolt nail has been arranged to the interior steel casing outside and outer steel casing inboard, has improved the whole atress performance of structure. On one hand, the structure ensures that reliable force transmission paths are arranged between the inner steel shell and the outer steel shell and between the inner steel shell and the outer steel shell as well as between the sandwich concrete, so that the whole structure participates in stress; on the other hand, the short stiffening ribs can ensure the continuity of the sandwich concrete.
(3) The utility model discloses a combination formula changeover portion make full use of the material performance of steel and concrete, and have good durability. Under the action of the shear resistant studs and the short stiffening ribs, the steel member and the concrete work cooperatively, and the compression resistance of the concrete and the tensile resistance of steel are fully utilized; the sandwich concrete is wrapped by the inner steel shell and the outer steel shell, so that the problem of structural durability caused by cracks generated on the surface of the switching section is solved.
Drawings
Fig. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention
FIG. 3 is a schematic view of the connection of the outer steel shell with the outer short stiffening ribs and the shear pins;
FIG. 4 is a schematic view of the connection of the inner steel shell with the inner short stiffening ribs and the shear pins;
FIG. 5 is a schematic view showing the connection of inner and outer short stiffening ribs with circumferential reinforcing bars and radial lacing wires;
in the figure: 1-outer steel shell, 13-outer steel shell vertical section, 14-outer steel shell inclined section, 2-inner steel shell, 21-inner steel shell vertical section, 22-inner steel shell horizontal section, 23-inner steel shell skirt edge, 24-prestressed hole, 25-long screw hole, 3-outer short stiffening rib, 31-outer stiffening rib hole, 4-inner short stiffening rib, 41-inner stiffening rib hole, 5-shear bolt, 6-circumferential reinforcing steel bar, 7-radial reinforcing steel bar, 8-sandwich concrete, 81-prestressed hole channel, 82-long screw hole channel, 9-steel tower cylinder, 10-long screw, 11-concrete tower cylinder and 12-prestressed stranded wire.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, a steel-concrete composite structure transition section of a wind generating set relates to the technical field of land wind power generation. This changeover portion contains outer steel casing 1, interior steel casing 2, outside short stiffening rib 3, inboard short stiffening rib 4, shear-resistant peg 5, hoop reinforcing bar 6, radial lacing bar 7, intermediate layer concrete 8, the thickness of outside short stiffening rib 3 and inboard short stiffening rib 4 should not be less than 12mm, outer steel casing 1 and interior steel casing 2 are placed with one heart, intermediate layer concrete 8 is located the cavity between outer steel casing 1 and interior steel casing 2, prestressing force pore 81 and long screw rod pore 82 are reserved to intermediate layer concrete 8 inside, changeover portion upper portion carries out bolted connection through long screw rod 10 with steel tower section of thick bamboo 9 bottom, the changeover portion lower part is connected with concrete tower section of thick bamboo 11 top through the mode of grout to compress tightly the interface through stretch-draw prestressing force steel strand 12.
As shown in fig. 3 and 4, the outer steel shell 1 is composed of an outer steel shell vertical section 13 and an outer steel shell inclined section 14, the proportion range of the outer steel shell vertical section 13 and the outer steel shell inclined section 14 is [0,1], and specific values are determined according to calculation results of actual design. The inner steel shell 2 consists of an inner steel shell vertical section 21, an inner steel shell horizontal section 22 and an inner steel shell skirt 23, and the inner steel shell skirt 23 is arranged to facilitate the operation of a grouting process. The inner steel shell skirt 23 is inclined at a certain angle to increase the sectional area of the root part of the inner steel shell skirt 23 and improve the local resistance, and the specific inclination angle is determined according to the calculation result of the actual design. The horizontal section 22 of the inner steel shell is reserved with a prestressed hole 24 and a long screw hole 25 so that the long screw 10 and the prestressed steel strand 12 can pass through, the diameter of the circumference of the prestressed hole 24 is smaller than that of the circumference of the long screw hole 22, and the shear resistant studs 5 are uniformly arranged on the inner side of the outer steel shell 1 and the outer side of the inner steel shell 2. The outer short stiffening ribs 3 are uniformly welded on the inner side of the outer steel shell 1 along the circumferential direction, the inner short stiffening ribs 4 are uniformly welded on the outer side of the inner steel shell 2 along the circumferential direction, outer stiffening rib holes 31 and inner stiffening rib holes 41 which can be penetrated by circumferential reinforcing steel bars 6 or radial reinforcing steel bars 7 are reserved on the outer short stiffening ribs 3 and the inner short stiffening ribs 4 respectively, the positions of the outer stiffening rib holes 31 and the positions of the inner stiffening rib holes 41 correspond to each other in the height direction, and the diameter of each hole is not smaller than the sum of the diameter of the circumferential reinforcing steel bars 6 or the radial reinforcing steel bars 7 and the maximum particle size of concrete aggregate.
As shown in fig. 5, the lengths of the circumferential steel bar 6 and the radial tie bars 7 are not less than 12D, where D is a steel bar diameter, the end portions of the circumferential steel bar 6 are not provided with hooks, and are connected to two adjacent outer short stiffening ribs 3 or inner short stiffening ribs 4, the end portions of the radial tie bars 7 are provided with right-angle hooks, and are connected to the outer short stiffening ribs 3 and the inner short stiffening ribs 4 in the same radial direction, the circumferential steel bar 6 and the radial tie bars 7 are arranged in a staggered manner in the height direction according to design requirements, and the hooks of the radial tie bars 7 are arranged in a staggered manner in the height direction.
The foregoing is merely a preferred embodiment of the present invention, but the present invention is not limited to the specific embodiment described above. Those skilled in the art should appreciate that they may readily use the present disclosure as a basis for modifying or supplementing other structures, elements, or steps without departing from the principles of the present disclosure.
Although used more herein: 1-outer steel shell, 13-outer steel shell vertical section, 14-outer steel shell inclined section, 2-inner steel shell, 21-inner steel shell vertical section, 22-inner steel shell horizontal section, 23-inner steel shell skirt, 24-prestressed hole, 25-long screw hole, 3-outer short stiffening rib, 31-outer stiffening rib hole, 4-inner short stiffening rib, 41-inner stiffening rib hole, 5-shear bolt, 6-hoop reinforcement, 7-radial tie bar, 8-sandwich concrete, 81-prestressed hole channel, 82-long screw hole channel, 9-steel tower cylinder, 10-long screw, 11-concrete tower cylinder, 12-prestressed steel strand and other terms, but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is contrary to the spirit of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122428039.1U CN216111116U (en) | 2021-10-09 | 2021-10-09 | A steel-concrete composite structure transition section of a wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122428039.1U CN216111116U (en) | 2021-10-09 | 2021-10-09 | A steel-concrete composite structure transition section of a wind turbine |
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| Publication Number | Publication Date |
|---|---|
| CN216111116U true CN216111116U (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122428039.1U Expired - Fee Related CN216111116U (en) | 2021-10-09 | 2021-10-09 | A steel-concrete composite structure transition section of a wind turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719419A (en) * | 2021-10-09 | 2021-11-30 | 重庆大学 | Steel-concrete composite structure switching section of wind generating set |
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2021
- 2021-10-09 CN CN202122428039.1U patent/CN216111116U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719419A (en) * | 2021-10-09 | 2021-11-30 | 重庆大学 | Steel-concrete composite structure switching section of wind generating set |
| CN113719419B (en) * | 2021-10-09 | 2024-09-27 | 重庆大学 | Steel-concrete combined structure switching section of wind generating set |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220322 |
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| CF01 | Termination of patent right due to non-payment of annual fee |