Lattice type wind power tower adopting arc-shaped concrete filled steel tube corner columns

Abstract

The utility model discloses a lattice type wind power tower adopting arc-shaped concrete filled steel tube corner posts, which comprises four support posts arranged in a rectangular array, a web member is arranged between every two adjacent support posts, each support post comprises a first arc-shaped corner post and a plurality of second arc-shaped corner posts, and the first arc-shaped corner post and the second arc-shaped corner posts are arranged in parallel. The first arc-shaped corner column is arranged at the bottom of the supporting column, and the multiple second arc-shaped corner columns are sequentially arranged above the first arc-shaped corner column in an overlapped mode. Through the arrangement of the first arc-shaped corner columns and the second arc-shaped corner columns, the wind power tower used for the high-rise building can generate small lateral deformation under the horizontal action, the anti-overturning capacity is improved, and the anti-seismic property is enhanced. Compared with a cylindrical concrete filled steel tube, more construction space can be provided, the safety in the construction process is enhanced, the construction inconvenience caused by complex cross rods and inclined rods in the construction process of an original traditional concrete filled steel tube tower frame is reduced, and the construction efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power generation, and particularly relates to a lattice type wind power tower adopting arc-shaped concrete-filled steel tubular corner columns. Background Art

[0002] With the rapid development of wind power generation technology in recent years, the structural forms of wind power tower barrels have shown diverse changes, including various forms such as pure steel flexible towers, segmented steel towers, prefabricated assembled concrete towers, and pure steel truss towers. Among them, lattice type towers are widely used in the construction of onshore wind turbines due to their advantages of large bearing capacity, high stiffness, good durability, and good integrity. Even at the 2023 Smart Expo, the world's first 165-meter-class prestressed concrete-filled steel tubular lattice type wind power tower was unveiled, further demonstrating the advantages of lattice type wind power towers such as high stress efficiency, easy installation, and low cost.

[0003] In a lattice type wind power tower, the area with greater stress at the lower part of the tower is the concrete-filled steel tubular lattice column, which is formed by overlapping four concrete-filled steel tubular corner columns and cross diagonal empty steel pipes. Vertical through prestressing tendons are applied in the concrete-filled steel tubular corner columns, and the upper part with relatively smaller stress still adopts the form of a traditional steel structure tower.

[0004] However, such concrete-filled steel tubular lattice type wind power towers still have certain defects. Since this form is usually used for high-rise wind power towers, it poses a great test to the lateral stability of the wind power tower. Moreover, since the corner columns adopt cylindrical concrete-filled steel tubes, their seismic performance is weaker compared to general steel-concrete hybrid structure tower barrels. At the same time, due to the large number of web members overlapping with the corner columns in the diagonal and transverse directions, the space remaining around the cylindrical concrete-filled steel tubes serving as the corner columns is relatively small, making it difficult to arrange the upper tower ladders and posing certain safety hazards.

[0005] For traditional lattice type concrete-filled steel tubular towers, because they are an in-body prestress system and the prestressing tendons are located inside the concrete-filled steel tubes, although the prestressing tendons are effectively protected and the erosion degree is reduced, it is impossible to carry out maintenance on the prestressing tendons.

[0006] Based on this, the applicant considered designing a lattice type wind power tower adopting arc-shaped concrete-filled steel tubular corner columns. Content of the Utility Model

[0007] Aiming at the deficiencies of the above-mentioned existing technologies, the technical problem to be solved by the present invention is: how to provide a lattice type wind power tower adopting arc-shaped concrete-filled steel tubular corner columns.

[0008] To solve the above technical problems, the utility model adopts the following technical solutions:

[0009] A lattice-type wind power tower with arc-shaped concrete-filled steel tube corner columns, comprising four support columns arranged in a rectangular array, with web members provided between every two adjacent support columns. Each support column includes a first arc-shaped corner column and a plurality of second arc-shaped corner columns. The first arc-shaped corner column is arranged at the bottom of the support column, and the plurality of second arc-shaped corner columns are sequentially overlapped and arranged above the first arc-shaped corner column.

[0010] Compared with the prior art, the advantages of the lattice-type wind power tower with arc-shaped concrete-filled steel tube corner columns of the present utility model are as follows:

[0011] (1) The present utility model can improve the bearing capacity under horizontal actions. By providing the first arc-shaped corner column and the second arc-shaped corner columns, the stiffness of the wind power tower is enhanced, effectively improving the integrity of the wind power tower. The wind power tower used in high-rise buildings has small lateral deformation generated under horizontal actions, improved anti-overturning ability, and enhanced seismic performance.

[0012] (2) The present utility model provides more safe construction space. By providing the first arc-shaped corner column and the second arc-shaped corner columns, compared with cylindrical concrete-filled steel tubes, more construction space can be provided, enhancing the safety during the construction process, reducing the construction inconvenience caused by the intricate cross bars and diagonal bars in the construction of the original traditional concrete-filled steel tube tower, and effectively improving the construction efficiency.

[0013] The above-mentioned lattice-type wind power tower with arc-shaped concrete-filled steel tube corner columns has the advantages of simple structure and easy implementation, is suitable for use in the installation process of existing wind towers, and has a low usage cost, capable of improving efficiency. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is Figure 1 The sectional structure schematic diagram of AA in;

[0016] Figure 3 It is the inner side structure schematic diagram of the first arc-shaped corner column;

[0017] Figure 4 It is Figure 1 The partial enlarged view of B in;

[0018] Description of the Reference Numerals

[0019] 100 First arc-shaped corner column;

[0020] 200 Second arc-shaped corner column;

[0021] 310 Outer arc surface, 320 Inner arc surface;

[0022] 400 flange;

[0023] 510 cross bar, 520 diagonal bar;

[0024] 600 bottom plate;

[0025] 700 external prestressed tendon. Specific implementation mode

[0026] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0027] During specific implementation: as Figures 1-4 shown, a lattice type wind power tower using an arc-shaped concrete-filled steel tube corner column includes four support columns arranged in a rectangular array, and a web member is provided between every two adjacent support columns. Each support column includes a first arc-shaped corner column 100 and a plurality of second arc-shaped corner columns 200. The first arc-shaped corner column 100 is arranged at the bottom of the support column, and the plurality of second arc-shaped corner columns 200 are sequentially overlapped and arranged above the first arc-shaped corner column 100.

[0028] During implementation, the outer contour shapes of the first arc-shaped corner column 100 and the second arc-shaped corner column 200 are the same.

[0029] In this embodiment, as Figures 1-4 shown, within one support column, a flange 400 is connected and arranged between the top end of the first arc-shaped corner column 100 and the bottom end of the adjacent second arc-shaped corner column 200, and a flange 400 is also connected and arranged between the top end and the bottom end of every two adjacent second arc-shaped corner columns 200.

[0030] In this way, through the arranged flange 400, the first arc-shaped corner column 100 and the second arc-shaped corner column 200 can be connected together, and two adjacent second arc-shaped corner columns 200 arranged up and down can be connected together. The connection structure is relatively stable and has higher reliability.

[0031] In this embodiment, as Figures 1-4 shown, the outer contour of the flange 400 is similar to the outer contour shape of the first arc-shaped corner column 100 or the second arc-shaped corner column 200.

[0032] In this way, by setting the outer contour shapes of the flange 400, the first arc-shaped corner column 100, and the second arc-shaped corner column 200 to be the same, the flange 400 can be better connected and installed between the first arc-shaped corner column 100 and the second arc-shaped corner column 200, and installation and maintenance are more convenient.

[0033] In this embodiment, as Figures 1-4As shown, both the first arc-shaped corner column 100 and the second arc-shaped corner column 200 include an inner arc surface 320 and an outer arc surface 310. The inner arc surface 320 and the outer arc surface 310 are offset from each other, and the inner arc surface 320 is concave-shaped.

[0034] In this way, by providing the outer arc surface 310 and the inner arc surface 320, the outer arc surface 310 can resist external impacts and enhance the stiffness of the first arc-shaped corner column 100 and the second arc-shaped corner column 200, and the inner arc surface 320 can reduce more occupied space, with higher space utilization rate.

[0035] In this embodiment, as Figures 1-4 shown, a web member is connected between every two adjacent first arc-shaped corner columns 100. On the same level, a web member is also connected between every two adjacent second arc-shaped corner columns 200.

[0036] In this way, by providing the web member, the connection between adjacent support columns is made more stable, enhancing the support stiffness of the support columns, and the external impact force can be dispersed to the remaining support columns and web members to balance the impact force.

[0037] In this embodiment, as Figures 1-4 shown, the web member includes a cross bar 510 and a diagonal bar 520. Both ends of the cross bar 510 are respectively connected to the middle parts of two adjacent first arc-shaped corner columns 100. One end of the diagonal bar 520 is connected to the top of one first arc-shaped corner column 100, and the other end is connected to the middle part of another adjacent first arc-shaped corner column 100.

[0038] In this way, by providing the web member, the connection stability between the first arc-shaped corner columns 100 is enhanced, the support stiffness is improved, and the support is more reliable.

[0039] Both the cross bar 510 and the diagonal bar 520 are connected to the first arc-shaped corner column 100 by bolts, which helps to improve the construction efficiency. Since the connection between the web member of the present utility model and the first arc-shaped corner column 100 can be realized by bolts for prefabricated connection, it is also convenient to pre-assemble the building components in the project before construction. After analyzing the construction site conditions, the building structure components can be manufactured in advance. Then, after transporting the manufactured building structure fittings to the construction site, only the splicing work needs to be completed on site, effectively reducing the actual construction intensity of the on-site workers and making the originally relatively complex construction task of the wind power tower more simple.

[0040] In this embodiment, as Figures 1-4As shown, the web members include a cross bar 510 and diagonal bars 520. On the same level, both ends of the cross bar 510 are respectively connected to the middle parts of two adjacent second arc-shaped corner columns 200, and one end of the diagonal bar 520 is connected to the top of one second arc-shaped corner column 200, and the other end is connected to the middle part of another adjacent second arc-shaped corner column 200.

[0041] In this way, through the arranged web members, the connection stability between the second arc-shaped corner columns 200 is enhanced, the support stiffness is improved, and the support is more reliable.

[0042] When the cross bar 510 and the diagonal bars 520 are connected to the second arc-shaped corner columns 200, they are all connected by bolts, which helps to improve the construction efficiency. Since the connection between the web members of the present utility model and the second arc-shaped corner columns 200 can be realized by bolted assembly connection, it is also convenient to pre-assemble the building components in the project in advance before the start of construction. After analyzing the construction site conditions, the building structure components can be fabricated in advance, and then after transporting the fabricated building structure fittings to the construction site, only the splicing work needs to be completed on site, effectively reducing the actual construction intensity of the on-site workers and making the originally relatively complex construction task of the wind turbine tower more simple.

[0043] In this embodiment, as Figures 1-4 shown, a bottom plate 600 is fixedly connected to the bottom end of each first arc-shaped corner column 100.

[0044] In this way, through the arranged bottom plate 600, the bottom end of the first arc-shaped corner column 100 is not directly welded and fixed to the ground, and can be flexibly moved and placed according to the construction environment.

[0045] In this embodiment, as Figures 1-4 shown, an external prestressed tendon 700 is vertically arranged on each bottom plate 600, and the connection point of the external prestressed tendon 700 and the corresponding bottom plate 600 is located within the inner arc surface 320 of the first arc-shaped corner column 100.

[0046] In this way, through the arranged external prestressed tendon 700, the later maintenance of the external prestressed tendon 700 can be carried out. Compared with the traditional concrete-filled steel tube tower, an external prestressed system is adopted, making the later maintenance of the external prestressed tendon 700 possible. At the same time, since the external prestressed tendon 700 is arranged on the inner side of the first arc-shaped corner column 100 and the second arc-shaped corner column 200, the corrosion and working wear during use are also reduced to a certain extent.

[0047] The above is only the preferred embodiment of the present utility model. It should be noted that for those skilled in the art, without departing from the premise of this technical solution, several deformed and improved technical solutions should also be regarded as falling within the scope protected by this claim book.

Claims

1. A lattice-type wind power tower using an arc-shaped concrete-filled steel tube corner column, characterized in that: It includes four support columns arranged in a rectangular array, with web members provided between every two adjacent support columns. Each support column includes a first arc-shaped corner column and multiple second arc-shaped corner columns. The first arc-shaped corner column is arranged at the bottom of the support column, and the multiple second arc-shaped corner columns are sequentially and overlappingly arranged above the first arc-shaped corner column.

2. The lattice type wind power tower adopting an arc-shaped concrete-filled steel tube corner column according to claim 1, wherein: Inside one of the support columns, a flange is connected and arranged between the top end of the first arc-shaped corner column and the bottom end of the adjacent second arc-shaped corner column. Flanges are also connected and arranged between the top and bottom ends of every two adjacent second arc-shaped corner columns.

3. The lattice-type wind power tower using an arc-shaped concrete-filled steel tubular corner column according to claim 2, wherein: The outer contour of the flange is similar to the outer contour of the first arc-shaped corner column or the second arc-shaped corner column.

4. The lattice type wind power tower adopting an arc-shaped concrete-filled steel tube corner column according to claim 3, characterized in that: Both the first arc-shaped corner column and the second arc-shaped corner column include an inner arc surface and an outer arc surface. The inner arc surface and the outer arc surface are offset from each other, and the inner arc surface is concave.

5. The lattice-type wind power tower with an arc-shaped concrete-filled steel tube corner column according to claim 2, characterized in that: Web members are connected and arranged between every two adjacent first arc-shaped corner columns. On the same level, web members are also connected and arranged between every two adjacent second arc-shaped corner columns.

6. The lattice type wind power tower using an arc-shaped concrete-filled steel tube corner column according to claim 5, characterized in that: The web member includes a cross bar and a diagonal bar. The two ends of the cross bar are respectively connected to the middle parts of two adjacent first arc-shaped corner columns. One end of the diagonal bar is connected to the top of one first arc-shaped corner column, and the other end is connected to the middle part of the adjacent other first arc-shaped corner column.

7. A lattice type wind power tower with an arc-shaped concrete-filled steel tubular corner column according to claim 5, characterized in that: The web member includes a cross bar and a diagonal bar. On the same level, the two ends of the cross bar are respectively connected to the middle parts of two adjacent second arc-shaped corner columns. One end of the diagonal bar is connected to the top of one second arc-shaped corner column, and the other end is connected to the middle part of the adjacent other second arc-shaped corner column.

8. A lattice type wind power tower using an arc-shaped concrete-filled steel tube corner column according to claim 4, characterized in that: A bottom plate is fixedly connected to the bottom end of each first arc-shaped corner column.

9. The lattice type wind power tower frame adopting an arc-shaped concrete-filled steel tube corner column according to claim 8, characterized in that: External prestressing tendons are vertically arranged on each bottom plate. The connection point of the external prestressing tendon and the corresponding bottom plate is located within the inner arc surface of the first arc-shaped corner column.

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