Cylindrical foundation structure for land mixing tower

Abstract

The utility model relates to the technical field of civil engineering, in particular to a cylindrical foundation structure for a land mixing tower. A sealing plate is arranged at the top of the cylindrical apron board, a conical transition cylinder is arranged at the top of the cylindrical apron board, an annular connecting table is arranged at the top of the conical transition cylinder, and a pouring cavity is formed between the conical transition cylinder and the sealing plate; the device further comprises a flange connecting mechanism, and the flange connecting mechanism is connected with a tower drum. When the cylindrical foundation structure for the land mixed tower is used, the cylindrical apron board is buried in a foundation, the tower drum is connected with the flange connecting mechanism, the flange connecting mechanism extends into the pouring cavity to be poured and fixed, and the cylindrical foundation structure has the advantages of being simple in structure, stable in connection, low in cost and the like. Soil bodies inside and outside the cylindrical apron board and the foundation are good in integrity, large bearing capacity is provided for the foundation, and good bending resistance can be provided for the foundation; the flange connecting cylinder is embedded in the pouring cavity, prestressed tendons of the tower cylinder are anchored in the foundation through the connecting penetrating holes, and foundation construction is convenient.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, specifically to a cylindrical foundation structure for onshore mixed towers. Background Technology

[0002] Large-megawatt, high-reliability, and high-economic-efficiency wind power project integrated solutions are the inevitable trend for the future development of the wind power industry. Reinforced concrete towers meet the requirement of towers bearing increasingly larger loads, offer good overall turbine stability, and have broad application prospects. However, the foundation structure of large-scale reinforced concrete towers is subjected to significant bending moment loads; therefore, overturning resistance and bending performance are urgent issues to be addressed for reinforced concrete tower foundations.

[0003] The connection between the tower and the foundation usually uses prestressed anchors and foundation ring structure, but the foundation ring has poor integrity with the foundation concrete and the cost of prestressed anchors is high.

[0004] Therefore, a cylindrical foundation structure for onshore hybrid towers needs to be designed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cylindrical foundation structure for onshore hybrid towers.

[0006] The technical solution adopted by this utility model is: a cylindrical foundation structure for onshore mixed towers, including a cylindrical skirt, a sealing plate at the top of the cylindrical skirt, a conical transition cylinder at the top of the cylindrical skirt, an annular connecting platform at the top of the conical transition cylinder, and a casting cavity formed between the conical transition cylinder and the sealing plate; it also includes a flange connection mechanism that cooperates with the annular connecting platform, and the flange connection mechanism is connected to the tower cylinder.

[0007] To better realize this utility model, the flange connection mechanism includes a flange connection cylinder extending into the casting cavity, and a flange connection plate located above the annular connection platform is provided on the top of the flange connection cylinder; a connection through hole and a backflow hole are provided on the flange connection plate, and a vertical prestressing tendon adapted to the connection through hole and extending into the casting cavity is provided on the tower cylinder.

[0008] To better realize this utility model, the connecting holes are multiple and are evenly spaced along the circumference of the flange connecting plate.

[0009] To better realize this utility model, multiple alignment columns are provided on the flange connection plate, and these alignment columns are fitted with the inner wall of the tower.

[0010] To better realize this utility model, the alignment column is cylindrical.

[0011] To better realize this utility model, the tubular skirt is made of steel.

[0012] To better realize this utility model, the tubular skirt is made of concrete.

[0013] To better realize this utility model, the angle between the conical transition cylinder and the horizontal plane is 30° to 50°.

[0014] The beneficial effects of this utility model are as follows: The cylindrical foundation structure for onshore mixed-use towers of this utility model, through the cooperation of a cylindrical skirt, sealing plate, conical transition cylinder, annular connecting platform, casting cavity, flange connection mechanism, and tower cylinder, allows for easy installation. During use, the cylindrical skirt is embedded in the foundation, and the tower cylinder is connected to the flange connection mechanism, which extends into the casting cavity for casting and fixation. Compared with existing technologies using prestressed anchor bolts and foundation ring structures, this design offers advantages such as simple structure, stable connection, and low cost. The cylindrical skirt provides good integrity between the soil inside and outside the foundation, offering greater bearing capacity and better bending resistance. The flange connection cylinder is embedded in the casting cavity, and the prestressed tendons of the tower cylinder are anchored inside the foundation through connecting perforations, facilitating foundation construction. The cylindrical skirt cavity design and flange connection method reduce the amount of foundation work and avoid the use of anchor bolt cages and foundation ring structures. The cylindrical skirt, as a foundation, eliminates the need for piling, making construction convenient and economically efficient. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of a cylindrical foundation structure for onshore mixed towers according to the present invention.

[0017] Figure 2 This is a schematic diagram of the cylindrical foundation structure of the present invention for onshore mixed towers when the tower cylinder is not matched;

[0018] Figure 3 This is a schematic diagram of a flange connection plate for a cylindrical foundation structure of an onshore hybrid tower according to the present invention.

[0019] In the attached diagram, 1—cylindrical skirt plate, 2—conical transition cylinder, 3—annular connecting platform, 4—flange connecting plate, 5—reverse grout hole, 6—connecting perforation, 7—alignment column, 8—flange connecting cylinder, 9—tower cylinder, 10—prestressed tendon. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] In the description of this disclosure, it should be noted that the terms "upper," "inner," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the disclosed product is in use. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0024] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0025] Example:

[0026] like Figures 1 to 3As shown, the cylindrical foundation structure for onshore mixed-use towers of this utility model includes a cylindrical skirt 1, a sealing plate at the top of the cylindrical skirt 1, a conical transition cylinder 2 at the top of the cylindrical skirt 1, and an annular connecting platform 3 at the top of the conical transition cylinder 2, forming a casting cavity between the conical transition cylinder 2 and the sealing plate; it also includes a flange connection mechanism that cooperates with the annular connecting platform 3, and the flange connection mechanism connects to the tower cylinder 9. The cylindrical foundation structure for onshore mixed-use towers of this utility model, through the cooperation of the cylindrical skirt 1, sealing plate, conical transition cylinder 2, annular connecting platform 3, casting cavity, flange connection mechanism, and tower cylinder 9, allows the cylindrical skirt 1 to be embedded in the foundation during use, and the tower cylinder 9 to be connected to the flange connection mechanism, which extends into the casting cavity for casting and fixation. Compared with the existing technology using prestressed anchor bolts and foundation ring structures, it has advantages such as simple structure, stable connection, and low cost. The cylindrical skirt 1 has good integrity between the soil inside and outside and the foundation, providing the foundation with greater bearing capacity and better bending resistance.

[0027] In a preferred embodiment, the flange connection mechanism includes a flange connecting cylinder 8 extending into the casting cavity, with a flange connecting plate 4 positioned above the annular connecting platform 3 at the top of the flange connecting cylinder 8. The flange connecting plate 4 has a connecting through hole 6 and a backflow hole 5. Vertical reinforcing bars 10, adapted to the connecting through hole 6 and extending into the casting cavity, are provided on the tower cylinder 9. The flange connecting cylinder 8 is embedded within the casting cavity, and the prestressing tendons 10 of the tower cylinder 9 are anchored inside the casting cavity (foundation) through the connecting through hole 6, facilitating foundation construction. The use of a cylindrical skirt plate cavity design and flange connection method reduces the amount of foundation work and avoids the use of anchor bolt cages and foundation ring structures. The cylindrical skirt plate 1, as a foundation, does not require piling, making construction convenient and economically efficient.

[0028] In a preferred embodiment, there are multiple connecting holes 6, which are evenly spaced along the circumference of the flange connecting plate 4. With this design, the prestressing tendons 10 arranged along the circumference of the tower 9 correspond to one connecting hole 6 and are inserted into the casting cavity. After the grout is poured, the excess grout flows out from the backflow hole 5, ensuring the compactness and integrity of the foundation and improving its mechanical strength.

[0029] In a preferred embodiment, a plurality of alignment columns 7 are provided on the flange connection plate 4, and these alignment columns 7 mate with the inner wall of the tower 9. This design allows for quick and convenient positioning during the installation of the tower 9, improving construction efficiency. More preferably, the alignment columns are cylindrical.

[0030] In a preferred embodiment, the cylindrical skirt 1 is made of steel or concrete. When using a concrete structure, the cylindrical skirt 1 has 2-3 rings of circumferential reinforcing bars inside, providing good bending resistance.

[0031] In a preferred embodiment, the angle between the conical transition cylinder 2 and the horizontal plane is 30° to 50°, and the concrete structure after pouring has good stability, which can improve the overturning resistance of the entire tower cylinder 9.

[0032] As a preferred implementation method, such as Figures 1 to 3 As shown, this example is for a 140m mixed tower foundation with a bottom diameter of 6.6m. The cylindrical skirt 1 is 10m high and 15m in diameter, providing a large load-bearing capacity for the foundation. The cylindrical skirt 1 can be made of steel or concrete. When made of concrete, the cylindrical skirt 1 is reinforced with 2-3 rings of circumferential steel bars, which provides good bending resistance.

[0033] The sealing plate is a 0.8m thick concrete circular plate structure, and the conical transition cylinder 2 is a hollow concrete structure. Preferably, the conical transition cylinder 2 is wider at the bottom and narrower at the top, with a bottom diameter of 15m, a top diameter of 8.2m, and a height of 2.5m. The interior of the conical transition cylinder 2 is a cast-in-place cavity, which provides convenient construction conditions for the tensioning of the embedded parts (prestressed tendons 10 of the tower cylinder 9).

[0034] The flange connecting plate 4 has a width of 800mm to 1200mm and a thickness of 60mm to 150mm. It is made of steel. The flange connecting cylinder 8 is located at the center of the flange connecting plate 4 and has a height of 0.2m to 2m. Preferably, the flange connecting plate 4 is provided with 192 connecting through holes 6 with a diameter of 51mm, 192 anti-slurry holes 5, and multiple alignment columns 7.

[0035] Preferably, the flange connecting cylinder 8 is embedded in the casting cavity, and the prestressed tendons 10 of the tower cylinder 9 are anchored in the casting cavity of the conical transition cylinder 2 through the connecting through hole 6, providing convenient construction conditions for the connection between the foundation and the tower cylinder 9; the setting of the back grout hole 7 allows excess grout to overflow, ensuring the compactness of the concrete; the setting of the alignment column 7 enables convenient and quick alignment, improving the accuracy and efficiency of construction.

[0036] Onshore cylindrical foundations have strong bearing capacity and bending resistance, eliminating the need for piling equipment and making construction convenient. The hollow cavity design inside the cylinder and the flange connection method reduce the amount of foundation work, avoiding the use of anchor cages and foundation ring structures, making construction convenient and economically efficient.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A cylindrical foundation structure for a land-based tower, characterized in that: The utility model relates to a tower flange connecting mechanism, including the cylindrical skirt board (1), the top of cylindrical skirt board (1) is provided with sealing plate, be provided with the conical transition cylinder (2) at the top of conical transition cylinder (2), be provided with annular connecting platform (3) at the top of conical transition cylinder (2), the conical transition cylinder (2) and sealing plate between form pouring cavity, still including the flange connecting mechanism with annular connecting platform (3) cooperation, the flange connecting mechanism is connected with tower cylinder (9).

2. A cylindrical foundation structure for a land-based tower according to claim 1, characterized in that: The flange connecting mechanism includes a flange connecting cylinder (8) extending into the pouring cavity, a flange connecting disc (4) above the annular connecting platform (3) is arranged on the top of the flange connecting cylinder (8); a connecting through hole (6) and a reverse pulp hole (5) are arranged on the flange connecting disc (4), and a prestressed tendon (10) adapted to the connecting through hole (6) and extending into the pouring cavity is arranged on the tower cylinder (9).

3. A cylindrical foundation structure for a land-based tower according to claim 2, characterized in that: The connecting through hole (6) is multiple and uniformly spaced along the circumference of the flange connecting disc (4).

4. A cylindrical foundation structure for a land-based tower according to claim 3, characterized in that: A plurality of alignment columns (7) are arranged on the flange connecting disc (4) and cooperate with the inner wall of the tower cylinder (9).

5. A cylindrical foundation structure for a land-based tower according to claim 4, characterized in that: The alignment column is cylindrical.

6. A cylindrical foundation structure for a land-based tower according to claim 1, characterized in that: The cylindrical skirt board (1) is made of steel or concrete.

7. A cylindrical foundation structure for a land-based tower according to claim 1, characterized in that: The included angle between the conical transition cylinder (2) and the horizontal plane is 30°-50°.

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