Bridge wind-induced vibration control device and split double box girder

Abstract

The present invention belongs to the field of bridges and ancillary equipment, and specifically provides a bridge wind-induced vibration control device and a split double box girder. The bridge wind-induced vibration control device includes a vertical telescopic mechanism, a horizontal telescopic mechanism and a telescopic cut angle, the vertical telescopic mechanism is arranged in the vertical direction, and can adjust the vertical length of the box girder body, the horizontal telescopic mechanism is arranged in the horizontal direction, and can adjust the horizontal length of the box girder body, the telescopic cut angle is connected between the vertical telescopic mechanism and the horizontal telescopic mechanism, and rotates with the vertical telescopic mechanism and the horizontal telescopic mechanism respectively, so that a variable chamfer with adjustable inclination angle and telescopic length can be formed, and its own angle and telescopic length can be adjusted according to wind speed and wind direction, so as to ensure that the split double box girder maintains good anti-flutter and vortex vibration performance under different wind speeds and wind directions.

Description

Technical Field

[0001] The invention belongs to the field of bridges and auxiliary equipment, and in particular relates to a wind-induced vibration control device for a bridge and a split double box girder. Background Art

[0002] In order to adapt to the rapidly growing traffic demand, and with the development of economy and the advancement of science and technology, the number of long-span bridges is increasing, and the span is getting larger and larger. As the span of the bridge increases, the wind sensitivity becomes more significant, and the risk of wind-induced vibration is greater, especially flutter and vortex-induced vibration. Flutter is a divergent vibration. Once it occurs, it will cause devastating damage to the bridge. Therefore, flutter must be controlled. Although vortex-induced vibration will not cause devastating damage to the bridge, it will cause bridge dysfunction, human discomfort, fatigue damage to components, and may even induce other types of fatal instability, which should also be controlled. Therefore, developing various measures to improve the wind-induced vibration performance of large-span bridges is crucial to ensure their wind-resistant safety.

[0003] Due to its superior flutter performance, split double box girders are widely used in super-long span bridges. However, due to the presence of the central slot, split double box girders are prone to vortex-induced vibration at low wind speeds. In order to suppress wind-induced vibration, the inner side of the box girder is usually cut, but the size and angle of the cut will significantly affect the vortex-induced vibration and flutter response, and the influence law is affected by the wind attack angle. How to adjust the angle and size of the cut in real time according to the incoming wind speed and wind direction is of great significance to ensure that the split box girder always has good flutter and vortex-vibration performance during operation. At present, the cut angles of split double box girders are fixed and cannot be changed, and it is impossible to ensure that the split double box girder maintains good flutter and vortex-vibration performance at any wind speed and wind direction. Summary of the invention

[0004] The present invention provides a bridge wind-induced vibration control device and a split double box girder, aiming to solve the problem in the prior art that the cut angles of the split double box girders are fixed and cannot be changed, and good flutter and vortex vibration performance cannot be guaranteed at any wind speed and any wind direction.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides a bridge wind-induced vibration control device, comprising:

[0007] A vertical telescopic mechanism, comprising a first fixed plate, a first movable plate and a first driving unit, wherein the first fixed plate is connected to the box beam body and has a vertical first track, the first movable plate is slidably arranged on the first track, and the first driving unit is used to drive the first movable plate to move up and down along the first track;

[0008] a horizontal telescopic mechanism, comprising a second fixed plate, a second movable plate and a second driving unit, wherein the second fixed plate is connected to the box beam body and has a second horizontal track, the second movable plate is slidably arranged on the second track, and the second driving unit is used to drive the second movable plate to move horizontally along the second track; and

[0009] A telescopic cutter is connected between the first movable plate and the second movable plate, and the telescopic cutter includes two telescopic plates and a telescopic drive unit. The sides of the two telescopic plates adjacent to each other slide together, and the sides of the two telescopic plates away from each other are respectively hinged to the corresponding first movable plate or the second movable plate. The telescopic drive unit is used to drive the two telescopic plates to move closer to or away from each other.

[0010] In a possible implementation, the first fixed plate has accommodating grooves formed at both ends along its length direction, the accommodating grooves are vertically extended, and both ends of the first movable plate are respectively accommodated in the two accommodating grooves.

[0011] In a possible implementation, the first fixing plate has a plurality of first mounting holes penetrating through the thickness of the first fixing plate, the first mounting holes are countersunk holes, and first bolts are arranged in the first mounting holes, and the first bolts are used to connect to the box beam body.

[0012] In a possible implementation, a rack is provided on the first movable plate, and the rack is extended vertically. The first driving unit includes a motor provided on the first fixed plate, and an output shaft of the motor is connected to a gear, and the gear is meshed with the rack for transmission.

[0013] In a possible implementation, two racks are provided, and the two racks are spaced apart along the length direction of the first movable plate, and two first driving units are provided corresponding to the racks.

[0014] In a possible implementation, the telescopic plate has a plurality of hinge points along its length direction for connecting with the corresponding first movable plate or the second movable plate.

[0015] In a possible implementation, the telescopic plate is provided with a mounting groove perpendicular to its plate surface, the telescopic drive unit is accommodated in the mounting groove, the telescopic drive unit is an electric telescopic rod arranged along the direction in which the two telescopic plates slide relative to each other, one end of the electric telescopic rod is connected to one of the telescopic plates, and the other end of the electric telescopic rod is connected to the other of the telescopic plates.

[0016] In a possible implementation, one of the telescopic plates is provided with a plurality of sliding grooves along its length direction, and the sliding grooves extend along the direction in which the two telescopic plates slide relative to each other, and the other telescopic plate is provided with a plurality of sliding blocks at intervals along its length direction, and the sliding grooves and the sliding blocks are slidably matched one by one.

[0017] Compared with the prior art, the bridge wind-induced vibration control device provided by the present invention has the following beneficial effects:

[0018] The bridge wind-induced vibration control device provided by the present invention includes a vertical telescopic mechanism, a horizontal telescopic mechanism and a telescopic cut angle. The vertical telescopic mechanism is arranged in the vertical direction and can adjust the vertical length of the extended box beam body. The horizontal telescopic mechanism is arranged in the horizontal direction and can adjust the horizontal length of the extended box beam body. The telescopic cut angle is connected between the vertical telescopic mechanism and the horizontal telescopic mechanism to form a variable chamfer with adjustable inclination angle and telescopic length. It can be adjusted according to wind speed and wind direction to ensure that the split double box beam maintains good anti-flutter and vortex vibration performance under different wind speeds and wind directions.

[0019] In a second aspect, the present invention provides a split double box girder, comprising:

[0020] Two box beam bodies are arranged opposite to each other, and a cut angle is formed at the bottom of one side of the two box beam bodies adjacent to each other; and

[0021] As described in any of the above-mentioned implementations, the number of the wind-induced vibration control devices for the bridge is two, and the two wind-induced vibration control devices for the bridge are respectively arranged at the cut-angle positions of the two box girder bodies.

[0022] In a possible implementation, the split double box girder further includes a wind direction collector, which is disposed on the box girder body and is used to collect on-site wind environment information.

[0023] The split double box girder provided by the present invention adopts the bridge wind-induced vibration control device described in any of the above-mentioned implementation methods, and has the same technical effect as the above-mentioned implementation methods, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a split double box girder provided in an embodiment of the present invention;

[0025] Figure 2 A front view of a split double box girder provided in an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the assembly of the box girder body and the bridge wind-induced vibration control device in an embodiment of the present invention;

[0027] Figure 4 A three-dimensional diagram of a bridge wind-induced vibration control device provided by an embodiment of the present invention;

[0028] Figure 5 is a three-dimensional diagram of a vertical telescopic mechanism in an embodiment of the present invention;

[0029] Figure 6 It is a stereoscopic diagram of the telescopic cut angle in the embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 10. Vertical telescopic mechanism; 11. First fixed plate; 111. Accommodating groove; 12. First movable plate; 121. Rack; 13. First drive unit; 131. Motor; 132. Gear; 14. First bolt; 20. Horizontal telescopic mechanism; 21. Second fixed plate; 22. Second movable plate; 23. Second drive unit; 30. Telescopic cutting angle; 31. Telescopic plate; 311. Hinge point; 32. Telescopic drive unit; 40. Box beam body. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0034] Please also read Figures 1 to 6 , the bridge wind-induced vibration control device and the split double box girder provided in the embodiments of the present invention are described below.

[0035] See also Figure 4 , Figure 5 and Figure 6In a first aspect, an embodiment of the present invention provides a bridge wind-induced vibration control device, comprising a vertical telescopic mechanism 10, a horizontal telescopic mechanism 20 and a telescopic cut angle 30, wherein the vertical telescopic mechanism 10 comprises a first fixed plate 11, a first movable plate 12 and a first driving unit 13, wherein the first fixed plate 11 is connected to a box girder body 40 and has a vertical first track, wherein the first movable plate 12 is slidably arranged on the first track, and the first driving unit 13 is used to drive the first movable plate 12 to move up and down along the first track; the horizontal telescopic mechanism 20 comprises a second fixed plate 21, a second movable plate 22 and a second driving unit 23, wherein the second fixed plate 21 It is connected to the box beam body 40 and has a horizontal second track. The second movable plate 22 is slidably arranged on the second track. The second driving unit 23 is used to drive the second movable plate 22 to move horizontally along the second track. The telescopic cut angle 30 is connected between the first movable plate 12 and the second movable plate 22. The telescopic cut angle 30 includes two telescopic plates 31 and a telescopic driving unit 32. The two telescopic plates 31 slide together on the sides adjacent to each other, and the two telescopic plates 31 are hinged to the corresponding first movable plate 12 or the second movable plate 22 on the sides away from each other. The telescopic driving unit 32 is used to drive the two telescopic plates 31 to move closer to or away from each other.

[0036] Compared with the prior art, the bridge wind-induced vibration control device provided by the embodiment of the present invention has the following beneficial effects:

[0037] The bridge wind-induced vibration control device provided by the embodiment of the present invention includes a vertical telescopic mechanism 10, a horizontal telescopic mechanism 20 and a telescopic cut angle 30. The vertical telescopic mechanism 10 is arranged in the vertical direction and can adjust the vertical length of the extended box girder body 40. The horizontal telescopic mechanism 20 is arranged in the horizontal direction and can adjust the horizontal length of the extended box girder body 40. The telescopic cut angle 30 is connected between the vertical telescopic mechanism 10 and the horizontal telescopic mechanism 20 to form a variable chamfer with adjustable inclination angle and telescopic length, which can be adjusted according to wind speed and wind direction to ensure that the split double box girder maintains good anti-flutter and vortex-vibration performance under different wind speeds and wind directions.

[0038] The vertical telescopic mechanism 10 includes a vertically arranged first fixed plate 11, and a first movable plate 12 driven by a first driving unit 13 and capable of sliding up and down along the first fixed plate 11. The first fixed plate 11 is used to be connected and fixed to the side wall of the box beam body 40, which can be specifically achieved by connecting bolts, steel bars, etc.

[0039] The horizontal telescopic mechanism 20 includes a second fixed plate 21 arranged horizontally, and a second movable plate 22 driven by a second driving unit 23 and capable of horizontally moving along the second fixed plate 21. The second fixed plate 21 is used to be connected to the bottom of the box beam, which can be achieved by connecting bolts, steel bars, etc. The first driving unit 13 and the second driving unit 23 can be driving components such as an electric telescopic rod, a crank slider mechanism, etc. that can achieve linear reciprocating movement.

[0040] In order to reduce design and manufacturing costs and improve the versatility of components, the vertical telescopic mechanism 10 and the horizontal telescopic mechanism 20 can adopt the same structural form, the difference being that the installation directions of the two are different.

[0041] The telescopic cut corner 30 is connected between the vertical telescopic mechanism 10 and the horizontal telescopic mechanism 20, and is composed of two telescopic plates 31 that slide with each other. The sliding between the two telescopic plates 31 is realized by telescopic driving, and the telescopic driving unit 32 can be an electric telescopic rod. The telescopic cut corner 30 can change its telescopic length and tilt angle according to the actual wind direction and wind speed, ensuring that the split double box girder maintains good anti-flutter and vortex vibration performance under different wind speeds and wind directions.

[0042] See also Figure 5 In some possible embodiments, the first fixed plate 11 and the first movable plate 12 can both be metal plate-like components welded from plates and profiles. In order to reduce their own weight, the interior of the plate body can be hollow and supported by steel sections. In order to enable the first movable plate 12 to slide stably relative to the first fixed plate 11 and improve the stability and reliability of the overall structure, the first fixed plate 11 is formed with accommodating grooves 111 at both ends along its own length direction. The accommodating grooves 111 are arranged to extend vertically, and the two ends of the first movable plate 12 are respectively accommodated in the two accommodating grooves 111. There is no specific limitation on the shape of the trough body of the accommodating groove 111, for example, it can be square, cylindrical, T-shaped, etc.

[0043] See also Figure 5 In some possible embodiments, in order to ensure a stable connection between the first fixing plate 11 and the box beam body 40, the first fixing plate 11 has a plurality of first mounting holes that penetrate the thickness of the first fixing plate 11. The first mounting holes are countersunk holes. The first bolts 14 are arranged in the first mounting holes. The threaded ends of the first bolts 14 are used to connect with the box beam body 40.

[0044] In practical application, the box beam body 40 can be a steel structure box beam or a box beam cast by cement concrete. When a steel structure box beam is used, a threaded hole can be processed at a corresponding position of the steel structure box beam, and the threaded section of the first bolt 14 is threadedly connected to the threaded hole. When a cement concrete box beam is used, a connecting member can be pre-buried at a corresponding position before casting, and the connecting member has a threaded hole for connecting with the first bolt 14.

[0045] The first fixed plate 11 has a plurality of first mounting holes, which can be arranged in a rectangular array. In order to prevent the first bolt 14 from interfering with the first movable plate 12, the first mounting hole is a countersunk hole, and the nut portion of the first bolt 14 is accommodated in the first mounting hole.

[0046] Similar to the vertical telescopic mechanism 10, in order to enable the second movable plate 22 to slide stably relative to the second fixed plate 21 and improve the stability and reliability of the overall structure, the second fixed plate 21 is formed with second accommodating grooves 111 at both ends along its length direction. The second accommodating grooves 111 are arranged to extend vertically, and the two ends of the second movable plate 22 are respectively accommodated in the two second accommodating grooves 111. The shape of the second accommodating grooves 111 can be square, cylindrical, T-shaped, etc. The second fixed plate 21 has a plurality of second mounting holes that penetrate the thickness of its own plate. The second mounting holes are countersunk holes, and second bolts are arranged in the second mounting holes. The threaded ends of the second bolts are used to connect with the box beam body 40.

[0047] See also Figure 5 In some possible embodiments, a rack 121 is fixedly provided on the first movable plate 12, and the rack 121 is extended vertically. The first driving unit 13 includes a motor 131 provided on the first fixed plate 11, and the output shaft of the motor 131 is connected to a gear 132, which is meshed with the rack 121 for transmission. The rotation of the gear 132 can drive the first movable plate 12 to move.

[0048] Since the first movable plate 12 extends along the length direction of the box beam body 40 and has a relatively long length, in order to stabilize the force on the first movable plate 12, please refer to Figure 5 In some possible embodiments, two racks 121 are provided, and the two racks 121 are spaced apart along the length direction of the first movable plate 12 , and two first driving units 13 are provided corresponding to the racks 121 .

[0049] It is understandable that the structure and driving method of the second movable plate 22 may be the same as those of the first movable plate 12, and will not be described in detail herein.

[0050] See also Figure 4 and Figure 6 In some possible embodiments, the telescopic plate 31 has a plurality of hinge points 311 along its length direction for connecting with the corresponding first movable plate 12 or second movable plate 22. The hinge points 311 are connected by a rotating shaft so that the telescopic plate 31 can rotate relative to the first movable plate 12 or the second movable plate 22, thereby changing the inclination angle of the telescopic plate 31.

[0051] See also Figure 6In some possible embodiments, the telescopic plate 31 is provided with a mounting groove perpendicular to its plate surface, and the telescopic drive unit 32 is accommodated in the mounting groove. The telescopic drive unit 32 is an electric telescopic rod arranged along the direction in which the two telescopic plates 31 slide against each other, and one end of the electric telescopic rod is connected to one of the telescopic plates 31, and the other end of the electric telescopic rod is connected to the other telescopic plate 31. When the telescopic plate 31 is long, multiple electric telescopic rods may be arranged along the length direction of the telescopic plate 31.

[0052] In some possible embodiments, one of the telescopic plates 31 is provided with a plurality of sliding grooves along its length direction, and the sliding grooves extend along the direction in which the two telescopic plates 31 slide against each other, and the other telescopic plate 31 is provided with a plurality of sliding blocks at intervals along its length direction, and the sliding grooves and the sliding blocks slide in correspondence with each other, and the sliding grooves may be T-shaped grooves or dovetail grooves, and the two telescopic plates 31 can slide against each other without separation.

[0053] In order to reduce wear, the inner walls of the sliding groove and the first track and the second track may be provided with recessed oil storage grooves, which are used to contain a certain amount of lubricating oil or grease, and can provide long-term lubrication for the sliding mating surfaces.

[0054] See also Figure 1 , Figure 2 and Figure 3 In a second aspect, the present invention further provides a split double box girder, comprising two box girder bodies 40, and a bridge wind-induced vibration control device as in any of the above embodiments. The two box girder bodies 40 are arranged opposite to each other, and a cut angle is formed at the bottom of the two box girder bodies 40 adjacent to each other; the number of the bridge wind-induced vibration control devices is two, and the two bridge wind-induced vibration control devices are respectively arranged at the cut angle positions of the two box girder bodies 40.

[0055] The split double box girder provided by the present invention has a cut angle with a variable angle and a telescopic length, which can be adjusted according to the wind direction and wind speed of the box girder body 40, ensuring that the split double box girder maintains good anti-flutter and vortex vibration performance under different wind speeds and wind directions.

[0056] In some possible embodiments, the split double box girder also includes a wind direction collector, which is arranged on the box girder body 40 and is used to collect wind environment information on site. The wind direction collector sends the measured wind direction and wind speed information to the controller, and then the controller issues action commands to the first drive unit 13, the second drive unit 23 and the telescopic drive unit 32 to adjust the telescopic length and inclination angle of the telescopic cutter 30 to make it in the most suitable posture, thereby improving the bridge's resistance to wind-induced vibration.

[0057] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0060] The above is a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0061] It can be understood that the various parts in the above-mentioned embodiments can be freely combined or deleted to form different combination embodiments. The specific contents of each combination embodiment will not be repeated here. After this description, it can be considered that the specification of the present invention has recorded various combination embodiments and can support different combination embodiments.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bridge wind-induced vibration control device, characterized in that: include: The vertical telescopic mechanism (10) comprises a first fixed plate (11), a first movable plate (12) and a first driving unit (13), wherein the first fixed plate (11) is connected to the box beam body (40) and has a vertical first track, the first movable plate (12) is slidably arranged on the first track, and the first driving unit (13) is used to drive the first movable plate (12) to move up and down along the first track; The horizontal telescopic mechanism (20) comprises a second fixed plate (21), a second movable plate (22) and a second driving unit (23), wherein the second fixed plate (21) is connected to the box beam body (40) and has a second horizontal track, the second movable plate (22) is slidably arranged on the second track, and the second driving unit (23) is used to drive the second movable plate (22) to move horizontally along the second track; and A telescopic cutter (30) is connected between the first movable plate (12) and the second movable plate (22), the telescopic cutter (30) comprising two telescopic plates (31) and a telescopic drive unit (32), the two telescopic plates (31) being slidably matched on the sides adjacent to each other, and the two telescopic plates (31) being hingedly connected to the corresponding first movable plate (12) or the second movable plate (22) on the sides away from each other, respectively, and the telescopic drive unit (32) is used to drive the two telescopic plates (31) to move closer to or away from each other; A rack (121) is provided on the first movable plate (12), and the rack (121) is extended in the vertical direction; the first driving unit (13) comprises a motor (131) provided on the first fixed plate (11); an output shaft of the motor (131) is connected to a gear (132), and the gear (132) is meshed with the rack (121) for transmission; Two racks (121) are provided, and the two racks (121) are arranged at intervals along the length direction of the first movable plate (12), and two first drive units (13) are provided corresponding to the racks (121).

2. The bridge wind-induced vibration control device according to claim 1, characterized in that: The first fixed plate (11) is provided with accommodating grooves (111) at both ends along its length direction, the accommodating grooves (111) extending vertically, and the two ends of the first movable plate (12) are respectively accommodated in the two accommodating grooves (111).

3. The bridge wind-induced vibration control device according to claim 2, characterized in that: The first fixing plate (11) has a plurality of first mounting holes penetrating the thickness of the first fixing plate, the first mounting holes being countersunk holes, first bolts (14) being arranged in the first mounting holes, and the first bolts (14) being used to connect to the box beam body (40).

4. The bridge wind-induced vibration control device according to claim 1, characterized in that: The telescopic plate (31) has a plurality of hinge points (311) along its length direction for connecting with the corresponding first movable plate (12) or the second movable plate (22).

5. The bridge wind-induced vibration control device according to claim 1, characterized in that: The telescopic plate (31) is provided with a mounting groove perpendicular to its plate surface, the telescopic drive unit (32) being accommodated in the mounting groove, the telescopic drive unit (32) being an electric telescopic rod arranged along a direction in which the two telescopic plates (31) slide relative to each other, one end of the electric telescopic rod being connected to one of the telescopic plates (31), and the other end of the electric telescopic rod being connected to the other of the telescopic plates (31).

6. The bridge wind-induced vibration control device according to claim 1, characterized in that: One of the telescopic plates (31) is provided with a plurality of sliding grooves along its length direction, the sliding grooves extending along the direction in which the two telescopic plates (31) slide relative to each other, and the other telescopic plate (31) is provided with a plurality of sliding blocks at intervals along its length direction, the sliding grooves and the sliding blocks being slidably matched one by one.

7. A split double box girder, characterized in that: include: Two box beam bodies (40) are arranged opposite to each other, and a cut angle is formed at the bottom of one side of the two box beam bodies (40) adjacent to each other; and As described in any one of claims 1 to 6 above, the number of the wind-induced vibration control devices for bridges is two, and the two wind-induced vibration control devices for bridges are respectively arranged at the cut corner positions of the two box girder bodies (40).

8. The split double box beam according to claim 7, characterized in that: The split double box girder also includes a wind direction collector, which is arranged on the box girder body (40) and is used to collect on-site wind environment information.

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