Triangular braced steel reinforced concrete filled steel tube truss tower

Abstract

The application discloses a kind of steel bone-concrete filled steel tube truss tower of triangular support, including fan, steel tower section, adapter section, truss section, independent foundation, independent foundation is fixed on ground by foundation bolt, truss section is set on independent foundation, truss section is set as triangular support truss tower, and support assembly is arranged in independent foundation.The application is triangular support, and the structure torsional performance is more optimal;Corner column uses steel pipe-steel bone concrete, increases rigidity while reducing the amount of steel;Independent foundation reduces land occupation area, saves land acquisition cost;Steel pipe is added with steel bone and grouting concrete inside, inner and outer steel pipes can be used as construction formwork, to avoid concrete surface quality problem in stripping process;Double prestress tensioning, increase the stability and tensile property of structure, while ensuring that concrete will not crack;Truss section component is all produced in factory, and scattered parts are transported to site installation, which significantly improves construction efficiency and ensures construction quality.

Description

Technical Field

[0001] This invention relates to the field of truss tower technology, specifically a triangular-supported steel-steel-tube concrete truss tower. Background Technology

[0002] Wind power is a pollution-free, renewable, and clean energy source. Wind power generation is a new type of energy that uses a tower to support the rotation of wind turbine blades to drive a generator to produce electricity. The tower is an essential structure. In recent years, the size of wind turbines has been increasing, and the required tower height and diameter have also been increasing. Currently, in low wind speed areas, towers are mainly divided into segmented pure steel towers, steel-concrete composite towers, and truss towers.

[0003] To prevent resonance and improve rigidity, segmented pure steel towers require a larger tower diameter. However, increasing the diameter leads to increased steel plate thickness, resulting in a proportional increase in steel consumption and higher manufacturing costs. Steel-concrete towers are easier to source and have lower processing and manufacturing costs compared to pure steel towers. They are also conveniently prefabricated in factories and transported to the site in segments. However, the cost of concrete molds is high, and quality control during concrete production is difficult, leading to numerous quality issues and raising concerns about tower safety. Truss-type towers are currently less commonly used, mainly because existing truss-type towers require a large footprint, a large number of bolts, and significant maintenance workload. They also employ a square support design, resulting in high steel consumption and poor torsional resistance. Summary of the Invention

[0004] The technical solution of this invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. It mainly offers a triangular-supported steel-steel-tube concrete truss tower to solve the technical problems mentioned in the background, such as the large footprint, numerous bolts, heavy maintenance workload, large steel consumption due to the use of square support design, and poor torsional resistance of existing truss towers.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] A triangular-supported steel-steel-tube concrete truss tower includes a wind turbine, a steel tower section, a transition section, a truss section, and an independent foundation. The independent foundation is fixed to the ground by anchor bolts. The truss section is set on the independent foundation and is configured as a triangular-supported truss tower. The independent foundation is equipped with a support component for supporting and fixing the columns of the truss section.

[0007] Preferably, the truss section is provided with three columns, the columns are at an acute angle to the ground, and the columns are connected to the anchor bolts by flanges.

[0008] Preferably, the anchor bolt consists of a nut, a washer, a gasket, and a bolt. The anchor bolt is connected to the reinforcing mesh, the ring plate, and the reinforcing ribs, and the reinforcing mesh, the ring plate, and the reinforcing ribs are pre-embedded in the ground.

[0009] Preferably, the column is provided with overall prestressed tendons, which are inserted into the independent foundation, and the independent foundation is provided with a lower end anchor and a shear key.

[0010] Preferably, the support assembly includes a support member disposed on the overall prestressing tendon, and the support member is provided with a fastener for fixing the support member to the overall prestressing tendon.

[0011] Preferably, the support assembly further includes a connector, which is disposed on the anchor bolt and has a reinforcing member for fixing the connector to the anchor bolt.

[0012] Preferably, a tie rod is provided on the connector located on the inclined back side of the overall prestressed tendon, and the end of the tie rod away from the connector is inclined downward and connected to the support.

[0013] Preferably, a support rod is provided on the connector located on the inclined front of the overall prestressing tendon, and a conical support block is provided at the end of the support rod away from the connector. The support block passes through the support member and rests on the overall prestressing tendon.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: The truss tower comprises a transition section, truss sections, and independent foundations. The truss tower itself has high rigidity, which can effectively avoid the overall resonance problem of the tower after the tower height increases; the use of triangular supports provides better torsional resistance, ensuring structural stability while using less steel compared to square supports; the corner columns use steel pipe-steel-reinforced concrete, increasing rigidity while reducing steel usage; the independent foundations reduce the land occupation area and save land acquisition costs; the steel reinforcement and concrete pouring inside the steel pipes allow the inner and outer steel pipes to also serve as construction formwork, avoiding concrete surface quality problems during demolding; double prestressing tension increases the stability and tensile strength of the structure while ensuring that the concrete will not crack; all truss section components are manufactured in the factory and transported to the site for installation, significantly improving construction efficiency and ensuring construction quality.

[0015] Support components are installed inside the independent foundation. The prestressed tendons inside the column are inserted into the independent foundation. A ring of anchor bolts is arranged circumferentially inside the independent foundation. The support rods and support blocks in front of the inclined front of the prestressed tendons tilt upwards and press against the prestressed tendons, while the tie rods behind the prestressed tendons tilt downwards and connect to the support components. The support components not only hold and support the prestressed tendons, but also fix and hold the conical support blocks. In this way, due to the inclined setting of the prestressed tendons, the anchor bolts below the inclined surface bear greater pressure. However, the tension provided by the anchor bolts above can distribute the pressure generated by the prestressed tendons more evenly. In addition, the steel mesh wrapped around the outside of the anchor bolts and the poured cement ensure that the column has sufficient support force. In this way, even if a three-legged column is used instead of the original four-legged column, the truss section can maintain sufficient support force and stability.

[0016] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a top view of the independent foundation structure of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the A1-A1 direction;

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the B1-B1 direction;

[0021] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along the B2-B2 direction;

[0022] Figure 6 This is a schematic diagram of the front structure of the anchor bolt in this invention;

[0023] The diagram is marked as follows:

[0024] 1. Wind turbine; 2. Steel tower section; 3. Transition section; 4. Truss section; 41. Column; 411. Flange; 5. Independent foundation; 6. Anchor bolt; 61. Nut; 62. Washer plate; 63. Gasket; 64. Bolt; 7. Steel mesh; 8. Ring plate; 9. Reinforcing rib; 10. Overall prestressed tendon; 11. Lower end anchor; 12. Shear key; 13. Support component; 14. Fixing component; 15. Connecting component; 16. Reinforcing component; 17. Tie rod; 18. Support rod; 19. Support block. Detailed Implementation

[0025] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please refer to the appendix carefully. Figures 1-6 A triangular-supported steel-steel-tube concrete truss tower includes a wind turbine 1, a steel tower section 2, a transition section 3, a truss section 4, and an independent foundation 5. The independent foundation 5 is fixed to the ground by anchor bolts 6. The truss section 4 is set on the independent foundation 5 and is configured as a triangular-supported truss tower. The independent foundation 5 is provided with a support component for supporting and fixing the columns 41 of the truss section 4.

[0029] The specific operation process of the present invention is as follows: The truss section 4 is provided with three columns 41 in a triangular shape supported on an independent foundation 5 on the ground. The independent foundation 5 is fixed to the columns 41 by anchor bolts 6. The anchor bolts 6 are arranged in a circumferential array inside the independent foundation 5 and are supported by a support assembly. Since the columns 41 are triangularly arranged, the columns 41 will be inclined. The support assembly distributes the pressure of the inclined columns 41 relatively evenly on the annular anchor bolts 6.

[0030] Please refer to Figures 1-3 Three columns 41 are installed on the truss section 4. The columns 41 are at an acute angle to the ground and are connected to the anchor bolts 6 through flanges 411.

[0031] The flange 411 in the column 41 of the truss section 4 is connected to the anchor bolt 6. The truss section 4 is designed as a triangular support truss tower. The three columns 41 form an acute angle with the ground. The two ends are connected to the independent foundation 5 and the transition section 3 respectively. The steel tower section 2 is set above the transition section 3, and the wind turbine 1 is set above the steel tower section 2.

[0032] Please refer to Figure 6 Anchor bolt 6 consists of nut 61, washer 62, washer 63, and bolt 64. Anchor bolt 6 is connected to steel mesh 7, ring plate 8, and reinforcing rib 9, and steel mesh 7, ring plate 8, and reinforcing rib 9 are pre-embedded in the ground.

[0033] Anchor bolt 6 consists of two nuts 61, a washer 62, a washer 63, and a bolt 64. An embedded ring plate 8, an embedded reinforcing rib 9, and a steel mesh 7 are pre-embedded. The thickness of the embedded ring plate 8 is 60mm to 80mm, the thickness of the reinforcing rib 9 is 10mm to 20mm, and the steel mesh 7 is fitted on the outside of the circumferentially arrayed anchor bolt 6. The steel mesh 7 is tightened inward to provide support for the anchor bolt 6.

[0034] Please refer to Figure 3 The column 41 is equipped with a prestressed tendon 10, which is inserted into the independent foundation 5. The independent foundation 5 is equipped with a lower anchor 11 and a shear key 12.

[0035] The overall prestressing tendon 10 uses high-strength steel strands, with an overall tensioning length of 85m-105m. The application of the overall prestressing tendon 10 is to reduce the tensile force on the column 41 and flange 411. The overall prestressing tendon 10 is also the main supporting structure of the column 41. Shear keys 12 are evenly distributed along the circumference on the side of the flange 411 that contacts the independent foundation 5. The shear keys 12, the bottom end of the overall prestressing tendon 10, and the lower end anchorage 11 of the overall prestressing tendon are buried together in the independent foundation 5.

[0036] Please refer to Figure 3 and Figure 4 The support assembly includes a support member 13, which is disposed on the overall prestressing tendon 10. The support member 13 is provided with a fixing member 14 for fixing the support member 13 to the overall prestressing tendon 10. The support assembly also includes a connector 15, which is disposed on the anchor bolt 6. The connector 15 is provided with a reinforcing member 16 for fixing the connector 15 to the anchor bolt 6. A tie rod 17 is provided on the connector 15 on the inclined back side of the overall prestressing tendon 10. The end of the tie rod 17 away from the connector 15 is inclined downward and connected to the support member 13. A support rod 18 is provided on the connector 15 on the inclined front side of the overall prestressing tendon 10. A conical support block 19 is provided on the end of the support rod 18 away from the connector 15. The support block 19 passes through the support member 13 and rests on the overall prestressing tendon 10.

[0037] Anchor bolts 6 are arranged in a circular array inside the independent foundation 5. However, the overall prestressing tendon 10 is inclined. Therefore, the anchor bolts 6 on the front of the inclined surface of the overall prestressing tendon 10 bear greater pressure, while the anchor bolts 6 on the back of the overall prestressing tendon 10 bear less pressure. A support member 13 is fitted onto the overall prestressing tendon 10 and fixed to the overall prestressing tendon 10 by a fastener 14. The anchor bolts 6 on the front of the inclined surface of the overall prestressing tendon 10 are provided with a support rod 18 and a conical support block 19. The support rod 18 is inclined upwards, and the more front of the inclined surface of the overall prestressing tendon 10 the anchor bolt 6 has, the greater the inclination angle of the support rod 18. The support block 19 on the support rod 18 passes through the support member 13 and rests on the overall prestressing tendon 10. The support member 13 has a slot that fits the support block 19. The support member 13 provides support and tension to the support block 19. The support blocks 8 and 19 mainly serve to support the overall prestressing tendons 10, providing support force to the overall prestressing tendons 10. Since the pressure of the overall prestressing tendons 10 cannot be directly applied to the anchor bolts 6 located on the back side of the inclined surface of the overall prestressing tendons 10, these anchor bolts 6 are equipped with downwardly inclined tie rods 17 connected to the support members 13. The tie rods 17 are used to provide tension to the support members 13, and the support members 13 can provide tension to the overall prestressing tendons 10 and the support blocks 19. In this way, the anchor bolts 6 located on the back side of the inclined surface of the overall prestressing tendons 10 will share the pressure borne by the anchor bolts 6 located on the front side of the inclined surface of the overall prestressing tendons 10. Thus, the pressure borne by the anchor bolts 6 arranged in a circumferential array is more uniform. The connecting members 15 provided on the anchor bolts 6 are fixed to the anchor bolts 6 by the reinforcing members 16. The reinforcing members 16 also provide a certain strength to support the anchor bolts 6 and the connecting members 15.

[0038] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A triangular-supported steel-framed concrete truss tower, comprising a wind turbine (1), a steel tower section (2), a transition section (3), a truss section (4), and an independent foundation (5), characterized in that: The independent foundation (5) is fixed to the ground by anchor bolts (6). The truss section (4) is set on the independent foundation (5). The truss section (4) is set as a triangular support truss tower. The independent foundation (5) is provided with a support component for supporting and fixing the column (41) of the truss section (4). The column (41) is provided with a total prestressed tendon (10), and the total prestressed tendon (10) is inserted into the independent foundation (5). The independent foundation (5) is provided with a lower end anchor (11) and a shear key (12). A tie rod (17) is provided on the connector (15) on the inclined back side of the overall prestressed tendon (10), and the end of the tie rod (17) away from the connector (15) is inclined downward and connected to the support (13); A support rod (18) is provided on the connector (15) on the inclined front of the overall prestressed tendon (10). A conical support block (19) is provided at the end of the support rod (18) away from the connector (15). The support block (19) passes through the support member (13) and rests on the overall prestressed tendon (10).

2. The triangular-supported steel-framed concrete truss tower according to claim 1, characterized in that: Three columns (41) are provided on the truss section (4). The columns (41) are at an acute angle to the ground. The columns (41) are connected to the anchor bolts (6) through flanges (411).

3. A triangular-supported steel-framed concrete truss tower according to claim 2, characterized in that: The anchor bolt (6) is composed of a nut (61), a washer (62), a washer (63), and a bolt (64). The anchor bolt (6) is connected to the steel mesh (7), the ring plate (8), and the reinforcing rib (9), and the steel mesh (7), the ring plate (8), and the reinforcing rib (9) are pre-embedded in the ground.

4. A triangular-supported steel-framed concrete truss tower according to claim 1, characterized in that: The support assembly includes a support member (13), which is disposed on the overall prestressed tendon (10), and the support member (13) is provided with a fastener (14) for fixing the support member (13) to the overall prestressed tendon (10).

5. A triangular-supported steel-framed concrete truss tower according to claim 4, characterized in that: The support assembly also includes a connector (15), which is disposed on the anchor bolt (6) and has a reinforcing member (16) for fixing the connector (15) to the anchor bolt (6).

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