Fabricated concrete duct piece, tower drum section and wind power tower drum

Abstract

The invention provides a fabricated concrete pipe piece, a tower drum section and a wind power tower drum, and belongs to the technical field of building construction. The fabricated concrete duct piece comprises a concrete duct piece body, a lateral connecting steel plate, a connecting steel plate, an embedded bolt set and a connecting piece. The tower drum section is defined by a plurality of assembly type concrete segments. The wind power tower drum is formed by stacking a plurality of tower drum sections. The whole wind power tower drum is homogenized into the simple concrete pipe pieces, the concrete pipe pieces are assembled into the tenon-and-mortise type tower drum sections on the construction site, then the wind power tower drum is assembled through the fault-tolerant type limiting nodes, operation is easy and convenient, the structure is safe and reliable, the method is suitable for construction of the wind power tower drum, additional operation steps are not needed, and the use requirement of the tower drum is met.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an assembled concrete pipe segment, a tower section composed of the assembled concrete pipe segment, and a wind power tower composed of the tower section. Background Art

[0002] The new mortise and tenon assembled structure system of wind turbine tower is a new wind turbine tower construction technology that splits the wind turbine tower into multiple wind turbine tower segments, uses the segments as the basic unit of wind turbine tower construction, and then transports these segments to the construction site for assembly and connection into mortise and tenon tower segments, and then assembles the tower segments into towers through assembled nodes. Because each segment is prefabricated in the factory and directly installed on site, the degree of industrialization is extremely high, with outstanding advantages such as high efficiency, simplicity, refinement, and greenness. In addition, the tower uses a mortise and tenon structure to tightly connect adjacent tower segments, has good mechanical properties, can withstand large loads, and ensures the stability of the tower during long-term use. In addition, the assembled nodes also greatly increase the fault tolerance rate when the tower is connected, and can be disassembled without loss and reused. It has advantages that traditional wind turbine tower construction cannot match, so it has good development prospects. At present, the research and development focus of wind turbine tower construction is on the connection method of the tower. Traditional wind turbine tower construction mostly adopts wet connection, which requires time to maintain the components, and bolt connection requires high precision, which makes alignment difficult during assembly, which has a great impact on the construction speed. In addition, the traditional wind turbine tower construction method cannot recycle the pipe segments, resulting in great waste of resources and economic losses. When dismantling, it can only be destroyed and dismantled, which has a great impact on the local environment. Summary of the invention

[0003] In view of this, in order to solve the above-mentioned shortcomings of traditional wind turbine tower construction, in the first aspect, the present invention provides an assembled concrete segment, which realizes the mortise and tenon connection of the concrete segment through embedded bolt groups, lateral connecting steel plates, connecting steel plates and connecting parts. It has fast construction speed, simple and convenient operation, safe and reliable structure, is suitable for the construction of wind turbine towers, does not require additional operating steps, and meets the use requirements of wind turbine towers.

[0004] To achieve the above object, the present invention provides the following technical solutions: An assembled concrete segment, comprising: Concrete segment body; Lateral connecting steel plates are anchored on the left and right sides of the concrete segment body; Connecting steel plates, anchored on the upper and lower sides of the concrete segment body; An embedded bolt group, wherein a plurality of embedded bolts are anchored on the upper side and / or the lower side of the concrete segment body; The connecting piece is arranged on the connecting steel plate between the adjacent embedded bolt groups.

[0005] Preferably, the connecting member is provided with a first bolt hole for screwing a fixing bolt into.

[0006] Preferably, the embedded bolt groups are arranged at intervals, and second bolt holes are opened on the connecting steel plates between adjacent embedded bolt groups.

[0007] Preferably, the connecting members are evenly arranged around the second bolt holes.

[0008] Preferably, it also includes a supporting steel section arranged on the connecting steel plate.

[0009] In a second aspect, the present invention provides a tower section, which is enclosed by a plurality of the above-mentioned assembled concrete segments.

[0010] Preferably, adjacent prefabricated concrete segments are connected by bolts.

[0011] In a third aspect, the present invention further provides a wind turbine tower, which is formed by stacking a plurality of the above-mentioned tower sections.

[0012] Preferably, adjacent tower sections are connected via fault-tolerant limit nodes.

[0013] Preferably, the fault-tolerant limit node includes: The embedded bolt is used to be inserted into the second bolt hole; A fixing plate, used for inserting the embedded bolts; The connecting piece is used for the fixing bolt to be screwed into to limit the displacement of the fixing plate; The fixing nut is used to be screwed onto the embedded bolt to fasten the fixing plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The assembled concrete segments provided by the present invention realize the mortise and tenon connection of the concrete segments through embedded bolt groups, lateral connecting steel plates, connecting steel plates and connecting parts, etc. A number of concrete segments are surrounded by a tower section, and a number of tower sections are assembled into a wind power tower through fault-tolerant limiting nodes. The present invention homogenizes the entire wind power tower into simple segments, and the segments are assembled into mortise and tenon tower sections at the construction site, and then assembled into a wind power tower through fault-tolerant limiting nodes. The operation is simple and convenient, the structure is safe and reliable, and it is suitable for the construction of wind power towers. No additional operating steps are required, and the use requirements of the tower are met. In addition, the nodes are simple to make, with low precision requirements, high fault tolerance, and convenient operation, which reduces construction time, and can also achieve beneficial effects such as firm tower connection and recyclable segments.

[0015] The present invention solves the problem that the connection time of wind turbine tower is long and time is needed for the maintenance of components, and can also solve the problem that wind turbine segments cannot be recycled. It realizes that there is no need to maintain components on site and they can be directly installed. The operation process is clear and concise, simple and easy, and no complicated technical means or professional equipment are required. The connection is safe and reliable, which is suitable for the construction of wind turbine towers, and the segments can be reused, so that resources can be efficiently reused. It is in line with the concept of environmental protection and sustainable development, can meet the use requirements of wind turbine towers, and can effectively reduce construction time.

[0016] The present invention uses a mortise and tenon connection (the concrete segments are connected by bolts, and the tower sections are connected by mortise and tenon connections) formed by pre-embedded bolt groups, lateral connection steel plates, connection steel plates and connectors. This connection method is not only simple to operate, but also ensures a firm connection between the tower sections, improving the safety and stability of the overall structure.

[0017] After a number of concrete segments of the present invention are formed into a tower section, multiple tower sections are assembled into a complete wind power tower through a fault-tolerant limiting node, thereby simplifying the assembly process. In addition, the fault-tolerant limiting node is easy to manufacture, has low precision requirements, has a high fault tolerance rate, and reduces construction difficulty and time cost.

[0018] The present invention does not require additional operation steps. After the concrete segments are assembled into mortise and tenon-jointed tower sections on site, they can be directly installed on site without requiring additional time for component maintenance. This simplifies the construction process, reduces unnecessary waiting time, and improves construction efficiency.

[0019] The pipe segments of the present invention can be recycled, which not only reduces material costs, but also conforms to the concept of environmental protection and sustainable development. At the same time, it reduces waste, avoids the use of a large amount of non-recyclable materials in traditional construction, reduces resource waste, and realizes efficient utilization of resources.

[0020] The present invention has strong applicability and can be widely used in wind power tower construction. It does not require complicated technical means or professional equipment and can be operated by ordinary construction personnel, further lowering the construction threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the internal components of the concrete segment of the present invention; Figure 2 It is a schematic diagram of the external composition of the concrete segment of the present invention; Figure 3 It is a schematic diagram of the vertical connection composition of the concrete pipe segment of the present invention; Figure 4 It is a schematic diagram of the tower section composition of the present invention; Figure 5 It is a schematic diagram of the horizontal connection of tower sections of the present invention; Figure 6 It is a schematic diagram of the fault-tolerant limit node composition of the present invention; In the figure, 1. connecting steel plate; 2. concrete segment body; 3. lateral connecting steel plate; 4. embedded bolts; 5. supporting steel; 6. connecting parts; 7. bolts; 8. concrete segment; 9. tower section; 10. fault-tolerant limit node; 11. fixing nut; 12. fixing plate; 13. fixing bolts. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1-2 As shown, the present invention provides an assembled concrete segment, comprising: The concrete segment body 2 is the basic part of the entire segment and is made of high-strength concrete with sufficient strength and durability.

[0026] The lateral connecting steel plates 3 are anchored on the left and right sides of the concrete segment body 2 and are used to connect with adjacent concrete segments 8 in a horizontal direction to ensure the lateral stability between the segments.

[0027] The connecting steel plates 1 are anchored on the upper and lower sides of the concrete segment body 2 and are used to connect with adjacent concrete segments 8 in a vertical direction to ensure the longitudinal stability between the segments.

[0028] The embedded bolt group has several embedded bolts 4 anchored on the upper side and / or lower side of the concrete segment body 2. The embedded bolts 4 are used to connect with the connectors 6 on other segments to form a mortise and tenon structure to ensure a tight connection between the segments.

[0029] The connecting member 6 is arranged on the connecting steel plate 1 between the adjacent embedded bolt groups, and is preferably welded to the connecting steel plate 1. The connecting member 6 cooperates with the embedded bolt group to achieve a firm connection between adjacent pipe segments, thereby ensuring the structural integrity of the entire tower section 9.

[0030] In the present invention, by cooperating with the embedded bolt group and the connector 6, adjacent concrete segments 8 are connected by bolts 7 to form a tower section 9. After being hoisted, a plurality of tower sections 9 are connected to each other by a mortise and tenon structure to form a wind power tower.

[0031] In the present invention, the connecting member 6 is provided with a first bolt hole for screwing in the fixing bolt 13 described below. By screwing the fixing bolts 13 into these holes, the adjacent tower sections 9 can be firmly connected together to form a wind power tower, thereby ensuring the stability and shear resistance of the connection parts. Due to the presence of the first bolt hole, on-site construction personnel can directly use standard tools for installation without the need for additional positioning or adjustment, thereby simplifying the assembly process and improving construction efficiency. Even if there is a slight position deviation during the installation process, the fixing bolts 13 can still achieve effective connection through the first bolt hole, thereby ensuring the safety and reliability of the overall structure.

[0032] In the present invention, the embedded bolt groups are arranged at intervals, and a second bolt hole is opened on the connecting steel plate 1 between the adjacent embedded bolt groups. The second bolt hole is used for inserting the embedded bolts 4 on another pipe segment, that is, the embedded bolts 4 on the tower sections 9 in the up and down directions are staggered and connected. Through the staggered connection, the tower sections 9 in the up and down directions can form a more stable connection. After the embedded bolts 4 are inserted into the second bolt holes, not only the number of connection points is increased, but also the force on the connection parts is made more uniform, thereby improving the stability and shear resistance of the overall structure.

[0033] In the present invention, the connecting members 6 are evenly arranged around the second bolt holes. The connecting members 6 are used for the fixing bolts 13 described below to fasten the fixing plate 12 described below.

[0034] In the present invention, a support steel 5 is also included which is arranged on the connecting steel plate 1. The support steel 5 is installed on the connecting steel plate 1, which can significantly improve the rigidity and bearing capacity of the connecting part. In particular, when subjected to a large load or external pressure, the support steel 5 can effectively disperse the stress and avoid structural deformation or damage caused by excessive local force. The support steel 5 works together with the connecting steel plate 1 to increase the shear resistance of the connecting part and ensure that the connection between adjacent tower sections 9 is more firm and reliable. This is crucial to the structural safety of the entire wind power tower. The presence of the support steel 5 enables the load to be evenly distributed over a larger range, reduces the force on a single connection point, thereby extending the service life of the structure and reducing maintenance costs. The use of the support steel 5 not only improves the safety of the structure, but also simplifies the difficulty of on-site construction. Due to its high stability and reliability, construction personnel can more conveniently assemble and debug, ensuring the construction quality. In some special environments (such as complex geological conditions, harsh climate, etc.), the support steel 5 can provide additional support to ensure that the tower section 9 can maintain good performance and stability under various conditions.

[0035] In a second aspect, the present invention provides a tower section 9, which is formed by enclosing a plurality of the above-mentioned assembled concrete segments 8. Figure 3 As shown, the sides of the two concrete segments 8 are aligned and then connected using bolts, as shown in FIG. Figure 4 As shown, similarly, three concrete segments 8 are connected in a ring to form a tower section 9. The tower section 9 can be directly assembled at the construction site without additional operation steps. The structural stability and safety of the entire tower section 9 are ensured by bolt connection, and the stability and safety of the wind turbine tower formed by several tower sections 9 are ensured by mortise and tenon structure connection. The construction process is simplified, unnecessary waiting time is reduced, and construction efficiency is improved.

[0036] In the present invention, adjacent prefabricated concrete segments 8 are connected by bolts 7 .

[0037] In a third aspect, the present invention further provides a wind turbine tower, which is formed by stacking a plurality of the above-mentioned tower sections 9 .

[0038] In the present invention, the adjacent tower sections 9 are connected via fault-tolerant limiting nodes 10. This design allows a certain installation error, improves the fault tolerance of the construction, and ensures the safety and reliability of the overall structure.

[0039] In the present invention, the fault-tolerant limiting node 10 includes: The embedded bolts 4 are used to be inserted into the second bolt holes to achieve the connection between the upper and lower tower sections 9 .

[0040] The fixing plate 12 is used to insert the embedded bolts 4 to connect the upper and lower tower sections 9. The fixing plate 12 has a certain thickness and strength, can withstand a large load, and ensure the stability of the connection part.

[0041] The connecting member 6 is used for the fixing bolts 13 to be screwed into to limit the displacement of the fixing plate 12. The connecting member 6 is arranged on the connecting steel plate 1 of the upper and lower tower sections 9, and the fixing plate 12 is firmly fixed to the embedded bolts 4 by the fixing bolts 13 to prevent it from sliding or deflecting when subjected to force.

[0042] The fixing nut 11 is used to be screwed into the embedded bolt 4 to fasten the fixing plate 12. The fixing nut 11 can also have an anti-loosening function to ensure that it will not loosen during long-term use and ensure the stability of the connection part.

[0043] The present invention realizes the connection between adjacent tower sections 9 through the above-mentioned fault-tolerant limiting node 10, which has the following advantages: Allowable installation error: Due to the matching design of the fixing plate 12 and the embedded bolts 4, even if there is a slight position deviation during the installation process, an effective connection can be achieved by adjusting the position of the fixing plate 12, thereby improving the fault tolerance of the construction.

[0044] Improve construction efficiency: simplify the difficulty of on-site construction, reduce unnecessary adjustments and rework, and speed up the construction progress.

[0045] Enhanced structural safety: Through multi-point connection and fixing methods, the overall stability and shear resistance of the tower are significantly improved, ensuring the safety and reliability of the structure.

[0046] Optimize load distribution: The combined effect of the fixing plate 12, the embedded bolts 4 and the fixing nuts 11 enables the load to be evenly distributed among multiple connection points, thereby reducing the stress on a single connection point and extending the service life of the structure.

[0047] Application Scenario The wind turbine tower provided by the present invention is particularly suitable for the construction of wind power generation equipment. Its design not only solves the problems existing in the construction of traditional wind turbine towers, such as long connection time, maintenance components, and inability to recycle pipe segments, but also simplifies the operation process and shortens the construction time. Through the design of mortise and tenon connection, staggered connection and fault-tolerant limit node 10, the entire construction process is made more convenient and efficient, while achieving the goals of structural safety and reliability and efficient use of resources, fully reflecting the application of environmental protection and sustainable development concepts.

[0048] The connection of the above-mentioned wind turbine tower provided by the present invention can meet the requirements of mechanical properties of tension resistance, shear resistance and bending resistance. The mortise and tenon structure will not cause torsional damage to the tower during use, and has strong applicability and can be applied to the field of wind turbine tower construction. After installation, the connection is tight, and no welding and maintenance are required at the construction site. The installation is convenient and quick, and the design of the outer concrete and inner steel components can effectively ensure the durability of the wind turbine tower.

[0049] The installation process of the above-mentioned concrete pipe segment 8, tower section 9 and wind turbine tower provided by the present invention is as follows: The concrete segment 8 is composed of a connecting steel plate 1, a concrete segment body 2, a lateral connecting steel plate 3, embedded bolts 4, a supporting steel 5 and a connecting piece 6. Figure 1 , 2 As shown. The connecting steel plate 1, the lateral connecting steel plate 3 and the embedded bolts 4 are all anchored on the concrete segment body 2, and the connecting piece 6 is welded on the connecting steel plate 1, which ensures that the components are tightly connected to each other and the force is transmitted smoothly. Align the sides of the two concrete segments 8 and then connect them with bolts, as shown in FIG. Figure 3 Similarly, three concrete segments 8 are connected in a ring shape to form a tower section 9, as shown in FIG. Figure 4 The tower section 9 is hoisted onto the wind turbine tower and aligned, and then inserted into the lower tower section 9 by displacement, and then the two are connected using the fault-tolerant limit node 10. After the construction connection is completed, only the concrete is exposed, which well protects the internal steel components from environmental erosion. Figure 5 The fault-tolerant limit node 10 is composed of a fixing nut 11, a fixing plate 12, a connecting piece 6, a fixing bolt 13 and an embedded bolt. Figure 6 When connecting, insert the embedded bolt 4 into the connecting steel plate 1 on the other pipe segment, insert the fixing plate 12 on the embedded bolt 4, then screw the fixing bolt 13 into the connecting piece 6, tighten to limit the displacement of the fixing plate 12, and finally tighten the fixing nut 11, and check whether the connection is tight, perform the quality inspection of the connection node, and complete the construction of the wind power tower.

[0050] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An assembled concrete segment, characterized in that: include: Concrete segment body; Lateral connecting steel plates are anchored on the left and right sides of the concrete segment body; Connecting steel plates, anchored on the upper and lower sides of the concrete segment body; An embedded bolt group, wherein a plurality of embedded bolts are anchored on the upper side and / or the lower side of the concrete segment body; The connecting piece is arranged on the connecting steel plate between the adjacent embedded bolt groups.

2. The assembled concrete segment according to claim 1, characterized in that: The connecting piece is provided with a first bolt hole for screwing a fixing bolt into.

3. The assembled concrete segment according to claim 2, characterized in that: The embedded bolt groups are arranged at intervals, and second bolt holes are opened on the connecting steel plates between adjacent embedded bolt groups.

4. The assembled concrete segment according to claim 3, characterized in that: The connecting members are evenly arranged around the second bolt holes.

5. The assembled concrete segment according to any one of claims 1 to 4, characterized in that: It also includes a supporting steel section arranged on the connecting steel plate.

6. A tower section, characterized in that: It is enclosed by a plurality of assembled concrete segments as described in any one of claims 1-3.

7. A tower section according to claim 6, characterized in that: Adjacent assembled concrete segments are connected by bolts.

8. A wind power tower, characterized in that: The tower is formed by stacking several tower sections as claimed in claim 6 or 7.

9. A wind power tower according to claim 8, characterized in that: The adjacent tower sections are connected via fault-tolerant limit nodes.

10. A wind power tower according to claim 9, characterized in that: The fault-tolerant limit node comprises: The embedded bolt is used to be inserted into the second bolt hole; A fixing plate, used for inserting the embedded bolts; The connecting piece is used for the fixing bolt to be screwed into to limit the displacement of the fixing plate; The fixing nut is used to be screwed onto the embedded bolt to fasten the fixing plate.

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