A wind resistance device for the bridge deck of a long-span pedestrian landscape suspension bridge

Abstract

The present invention discloses a wind resistance device for the bridge deck of a long-span pedestrian landscape suspension bridge, belonging to the technical field of bridge engineering. The lower surface of the hollowed bridge deck is provided with a number of adjusting plates arranged along the width direction of the hollowed bridge deck. The middle parts of both ends of the adjusting plates are rotatably connected to the side box girders. Below both ends of the adjusting plates, there are wind-driven mechanisms for controlling the rotation angle of the adjusting plates; the wind-driven mechanisms include a number of suspension ropes, a first slotted hollow rod, an internal sliding rod, a second slotted hollow rod, a traction rope and a sliding vane. The first slotted hollow rod is arranged along the width direction of the hollowed bridge plate and fixed to the side box girders at both ends. The internal sliding rod is slidably arranged in the first slotted hollow rod. One ends of a number of the suspension ropes are respectively fixed to the two edges in the width direction of a number of the adjusting plates. This technical solution solves the problem in the prior art that the ventilation rate of the bridge deck cannot be adjusted according to the wind force level, resulting in the difficulty of achieving the best wind resistance effect of the bridge.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and particularly relates to a wind resistance device for the bridge deck of a long-span pedestrian landscape suspension bridge. Background Art

[0002] The suspension bridge is a bridge type with a simple linear shape and beautiful appearance. Many pedestrian bridges built in canyon scenic areas have chosen this bridge type. With the booming development of the tourism industry and the rapid progress of science and technology, in order to further attract tourists to visit, large-span and lightness have become two development trends of pedestrian landscape suspension bridges. On the one hand, the span of pedestrian landscape suspension bridges is getting longer and longer, the sag of the main cable usually increases, and the sag-span ratio is relatively high; on the other hand, the load-bearing structure of pedestrian landscape suspension bridges commonly uses steel structures, with small self-weight and low stiffness of the structure. In the current general trend, this will lead to a smaller and smaller structural stiffness, and further change the overall aerodynamic performance of the bridge structure. Therefore, the aerodynamic stability problem of pedestrian landscape suspension bridges needs to be closely concerned.

[0003] Since pedestrian landscape suspension bridges are mostly located in places with complex natural wind field environments such as river canyons or deep mountains, the problem of wind-induced vibration of the structure is prominent under the action of large wind loads, and a series of adverse consequences are likely to occur. In order to solve the complex wind-induced vibration safety problems of these pedestrian landscape suspension bridges, at present, the main beam cross-section forms of many built pedestrian landscape suspension bridges all adopt double-sided small box girders. Practice has proved that when the air flow passes through the main beam, due to the structural change of the double-sided small box girder, the vortex shedding form is changed, so the flutter performance of the bridge structure can be improved.

[0004] Since flutter affects the safety of the bridge, in order to improve the flutter performance of long-span bridges, the main beam of the bridge usually has a slot in the middle of the section and adopts a split box girder scheme. Existing test results show that split box girders are more likely to generate vortex-induced vibration at low wind speeds, affecting the driving safety of vehicles on the bridge and the fatigue characteristics of the bridge structure. In order to improve the vortex vibration performance of split box girders and reduce the vortex vibration amplitude, the most direct and effective method is to control the ventilation rate between the slots. Therefore, for long-span bridges with split main girders, controlling flutter and vortex vibration is closely related to the selection of the ventilation rate of the slots. The commonly used method at present is to determine the ventilation rate between the slots during construction, but it cannot be changed and adjusted according to the wind force level during the subsequent use process, so the bridge cannot achieve the best wind resistance performance. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a wind resistance device for the bridge deck of a long-span pedestrian landscape suspension bridge, so as to solve the problem that the ventilation rate of the existing bridge deck cannot be adjusted according to the wind force level, resulting in the difficulty of achieving the best wind resistance effect of the bridge.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An anti-wind device for the bridge deck of a long-span pedestrian landscape suspension bridge of the present invention includes side box girders provided on both sides, and a hollowed-out bridge deck provided between the side box girders. A plurality of adjusting plates are provided on the lower surface of the hollowed-out bridge deck along the width direction of the hollowed-out bridge deck. The middle parts of both ends of the adjusting plate are rotatably connected to the side box girders. Wind-driven mechanisms for controlling the rotation angle of the adjusting plate are provided below both ends of the adjusting plate; the wind-driven mechanism includes a plurality of suspension ropes, a first grooved hollow rod, an internal sliding rod, a second grooved hollow rod, a traction rope, and a sliding vane. The first grooved hollow rod is arranged along the width direction of the hollowed-out bridge plate and is fixed to the side box girders at both ends. The internal sliding rod is slidably arranged in the first grooved hollow rod. One ends of the plurality of suspension ropes are respectively fixed to both edges in the width direction of a plurality of adjusting plates, and the other ends are fixedly connected to the internal sliding rod. A stop rod is provided outside the suspension ropes arranged on the same adjusting plate. One end of the stop rod is fixed to the side box girder. The second grooved hollow rod is arranged in parallel below the first grooved hollow rod and is connected to the side box girders at both ends. The sliding vane is slidably sleeved on the second grooved hollow rod. The traction rope is arranged at both ends of the first hollow rod, and one end of the traction rope is fixed to the end of the internal sliding rod, and the other end is fixed to the side of the sliding vane.

[0008] The working principle of this technical solution is as follows:

[0009] Under the action of the wind blowing the sliding vane, the sliding vane is driven to slide on the second grooved hollow rod. While sliding, the traction rope is pulled. Under the pulling action of the traction rope, the internal sliding rod will be driven to move in the first grooved hollow rod. The movement of the internal sliding rod will pull the suspension rope to tilt in the moving direction. When tilting, the adjusting plate will be driven to rotate. Therefore, a gap will appear between adjacent adjusting plates due to the tilt, so that the wind can enter from the gap, thereby realizing the adjustment of the ventilation rate of the bridge deck. It is not difficult to understand that the suspension rope should be an elastic rope. At the same time, the internal sliding rod moves in the opposite direction to the wind blowing direction. Therefore, the suspension rope in contact with the stop rod will be limited and bent (the bending of the suspension rope changes the direction of the pulling force, thereby realizing the control of the direction of the gap between the adjusting plates. At the same time, only a small part of the suspension rope on this side can move and tilt. That is, when the suspension rope on this side moves the same distance, the deformation amount needs to be larger, and thus the pulling force received is larger). Therefore, the gap of the adjusting plate faces the direction of the wind, that is, the adjustment of the ventilation rate is realized.

[0010] Furthermore, a return spring is provided between the two ends of the inner sliding rod and the two ends of the first hollow rod, and the towing rope is located inside the return spring. The advantage is that the return spring can drive the adjusting plate to reset after the wind force disappears. At the same time, according to the deformation of the spring, the moving distance of the inner sliding rod under the action of the wind force can be changed, so as to achieve a rough matching between the wind force level and the displacement of the inner sliding rod, that is, to achieve a matching between the opening of the adjusting plate gap and the wind force level.

[0011] Furthermore, an inner fixing rod is provided inside the second slotted hollow rod. A number of elastic sheets with elastic moduli matching the wind force level from the inside to the outside are arranged on the inner fixing rod in a mirror image manner. One end of the elastic sheet is connected to the inner fixing rod, and the other end of the elastic sheet extends outward from the slot of the second slotted hollow rod. The advantage is that when the sliding blade slides on the second slotted hollow rod, it will contact the elastic sheet. Therefore, by setting elastic sheets with different elastic moduli, the sliding blade can bend the elastic sheet and then overcome the thrust of the elastic sheet. Since the elastic modulus of the elastic sheet can be designed, the matching accuracy with the wind force level through the design of the elastic modulus is higher (the accuracy of the return spring matching the wind force level through the compression deformation is low).

[0012] Furthermore, both side surfaces of the end of the elastic sheet located inside the second slotted hollow rod are rotatably connected to the inner fixing rod, and a stop piece is provided on one side of this end close to the center of the second slotted hollow rod. The stop piece is fixed to the inner fixing rod. Permanent magnets that repel each other are provided on the elastic sheet and the inner fixing rod respectively. The advantage is that when the wind direction changes and the sliding blade moves in the reverse direction, it can directly push down the elastic sheet it contacts, and then quickly return to the initial position in the middle of the second slotted hollow rod, and then contact the elastic sheet arranged on the other side. At the same time, the pushed-down elastic sheet will rotate upward by a certain angle under the action of the magnet, which is convenient for contacting the sliding blade next time. The role of the stop piece is to limit the rotation direction of the elastic sheet.

[0013] Furthermore, torsion springs are provided at the parts where the two ends of the adjusting plate are rotatably connected. The advantage is that it improves the reset effect of the adjusting plate when there is no wind.

[0014] Furthermore, a towing rope is provided above the hollowed-out bridge deck. One end of the towing rope is fixedly connected to one end of the hollow sliding rod. The advantage is that the towing rope can directly control the opening of the adjusting plate, and thus achieve manual control according to requirements.

[0015] Furthermore, a fixed pulley is provided at the end of the first slotted hollow rod, and the towing rope is wound around the fixed pulley.

[0016] Further, the sliding vane includes a first slip ring and a plurality of windshields uniformly arranged on the first slip ring. The first slip ring is slidably sleeved. Further, a groove is provided on the first slip ring, and a convex rib is provided in the length direction of the second slotted hollow rod. The groove is slidably sleeved on the convex rib. The advantage is that rotation is restricted to avoid the traction rope from getting entangled.

[0017] Further, a second slip ring is provided at one end of the suspension rope connected to the inner sliding rod. The second slip ring is sleeved on the inner sliding rod. A retaining ring is provided on the outer side of the side surface of the second slip ring facing the center of the same adjusting plate. The retaining ring is fixed on the inner sliding rod. The advantage is that when the wind blows, one side of the suspension rope slides on the sliding rod, and one side moves together with the inner sliding rod under the action of the retaining ring. That is, one side of the pulling rope has a moment, and the other side does not. Therefore, it will rotate towards the side with the moment, and thus, in cooperation with the retaining rod, the opening and closing effect of the adjusting plate is further improved.

[0018] Further, a connecting rod is provided in the middle of the second slotted hollow rod. One end of the connecting rod is rotatably connected to the middle of the second slotted hollow rod, and the other end is fixed to the side box girder. A wind vane is provided on the second slotted hollow rod. The advantage is that the setting of the wind vane enables the blades to always face the direction of the wind, further improving the matching effect with the wind force level.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) This device can automatically change the opening degree of the adjusting plate according to the wind force, thereby realizing the self-adjustment and change of the ventilation rate of the bridge deck, and improving the wind resistance performance of the bridge deck; (2) The setting of the elastic piece enables the force required for the bending deformation of the elastic piece to match the wind force level, that is, the opening degree of the adjusting plate can be accurately adjusted according to the size of the wind force level, further improving the wind resistance performance of the bridge deck; (3) This device can change the gap direction of the adjusting plate according to the wind direction, so that the gap direction always faces the moving direction of the wind, improving the adjustment effect on the ventilation rate; (4) By setting the elastic piece, the interval between medium and low wind speeds and high wind speeds can be distinguished, and then the opening degree of the adjusting plate can be controlled, and then the ventilation rate of the bridge deck at medium and low wind speeds and high wind speeds can be controlled to make it reach the optimal ventilation rate at vortex-induced vibration and tremor (studies have shown that vortex-induced vibration occurs at low and medium wind speeds, and the ventilation rate should be small, and tremor occurs at high wind speeds, and the ventilation rate should be large).

[0021] Other advantages, objectives and features of the present invention will be described in the subsequent description, and to some extent, they are obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the following drawings are provided for illustration:

[0023] Figure 1 Schematic three-dimensional view of the wind-resistant device for the bridge deck of the present invention installed below the bridge deck;

[0024] Figure 2 Schematic three-dimensional view of the wind-resistant device for the bridge deck of the present invention installed below the bridge deck from another perspective;

[0025] Figure 3 Schematic cross-sectional view of the front view of the wind-resistant device for the bridge deck of the present invention installed below the bridge deck;

[0026] Figure 4 Schematic three-dimensional view of the wind-resistant device for the bridge deck of the present invention;

[0027] Figure 5 For the present invention Figure 4 Partial enlarged schematic view of area A;

[0028] Figure 6 For the present invention Figure 3 Partial enlarged schematic view of area B;

[0029] Figure 7 For the present invention Figure 3 Partial enlarged schematic view of area C;

[0030] Figure 8 For Figure 1 Partial enlarged schematic view of area D;

[0031] Figure 9 Schematic view of the setting relationship between the retaining rod and the suspension rope in the wind-resistant device for the bridge deck of the present invention;

[0032] Figure 10 Schematic view of the opening and closing of the baffle under the action of wind force in the present invention.

[0033] The reference signs in the drawings are as follows:

[0034] Side box girder 1, hollowed-out bridge deck 2, adjusting plate 3, first rotating shaft 4, suspension rope 5, first mounting bracket 6, first slotted hollow rod 7, internal sliding rod 8, return spring 9, towing rope 10, second mounting bracket 11, second slotted hollow rod 12, sliding vane 13, internal fixed rod 14, mounting plate 15, second rotating shaft 16, elastic sheet 17, retaining piece 18, first permanent magnet 19, second permanent magnet 20, first through slot 21, second through slot 22, retaining rod 23, second sliding ring 24, retaining ring 25. Detailed implementation manners

[0035] Example 1

[0036] AsFigures 1 to 9 As shown in the figure, a wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge according to the present invention includes side box girders 1 provided on both sides, and a hollowed-out bridge deck 2 provided between the side box girders 1. A number of adjusting plates 3 are provided on the lower surface of the hollowed-out bridge deck 2 along the width direction of the hollowed-out bridge deck 2. The middle parts of both ends of the adjusting plate 3 are rotatably connected to the side box girders 1 through first rotating shafts 4. Wind power driving mechanisms are provided below both ends of the adjusting plate 3 for controlling the rotation angle of the adjusting plate 3; the wind power driving mechanism includes a number of suspension ropes 5, a first slotted hollow rod 7, an internal sliding rod, a second slotted hollow rod 12, a traction rope 10, and a sliding vane 13. The first slotted hollow rod 7 is arranged along the width direction of the hollowed-out bridge plate and is fixed to the side box girders 1 at both ends. Specifically, in this embodiment, it is fixed to the side box girders 1 through a first mounting bracket 6. The internal sliding rod 8 is slidably arranged in the first slotted hollow rod 7. One ends of a number of suspension ropes 5 are respectively fixed to the two edges in the width direction of a number of adjusting plates 3, and the other ends are connected to the internal sliding rod 8. A retaining rod 23 is provided on the outer side of the suspension ropes 5 arranged on the same adjusting plate 3. One end of the retaining rod 23 is fixed to the side box girder 1. The second slotted hollow rod 12 is arranged parallel to the lower part of the first slotted hollow rod 7 and is connected to the side box girders 1 at both ends. Specifically, in this embodiment, it is fixed to the side box girders 1 through a second mounting bracket 11. The sliding vane 13 is slidably sleeved on the second slotted hollow rod 12. The traction rope 10 is arranged at both ends of the first hollow rod, and one end of the traction rope 10 is fixed to the end of the internal sliding rod 8, and the other end is fixed to the side of the sliding vane 13.

[0037] The working principle of this technical solution is as follows:

[0038] Under the action of the wind blowing the sliding vane 13, the sliding vane 13 is driven to slide on the second slotted hollow rod 12. While sliding, the traction rope 10 is pulled. Under the pulling action of the traction rope 10, the internal sliding rod 8 will be driven to move in the first slotted hollow rod 7. The movement of the internal sliding rod 8 will pull the suspension rope 5 to tilt in the moving direction. When tilting, the adjusting plate 3 will be driven to rotate. Therefore, a gap will appear between adjacent adjusting plates 3 due to the tilt, so that the wind can enter from the gap, thereby realizing the adjustment of the ventilation rate of the bridge deck. It is not difficult to understand that the suspension rope 5 should be an elastic rope. At the same time, the internal sliding rod 8 moves in the opposite direction to the wind direction. Therefore, the suspension rope 5 in contact with the retaining rod 23 will be limited and bent (the bending of the suspension rope 5 changes the direction of the pulling force, thereby realizing the control of the opening direction of the gap of the adjusting plate 3. At the same time, only a small part of the suspension rope 5 on this side can move and tilt, that is, when the suspension rope 5 on this side moves the same distance, the deformation amount needs to be larger, and thus the pulling force received is larger). Therefore, the gap of the adjusting plate 3 faces the direction of the wind force, that is, the adjustment of the ventilation rate is realized.

[0039] It should be noted that if the device is arranged at the slot, the device can be arranged and fixed on the crossbeam of the bridge, and the sliding blade 13 is arranged at the middle position of the second slotted hollow rod 12, the spring piece 17 is arranged on both sides of the sliding blade 13, and the traction rope 10 is also preferably an elastic rope. The first slotted hollow rod 7 and the second slotted hollow rod 12 are respectively provided with a first through slot 21 and a second through slot 22 arranged through the outer side surface.

[0040] Reset springs 9 are provided between the two ends of the internal slide rod 8 and the two ends of the first hollow rod, and the traction rope 10 is located inside the reset spring 9. The reset spring 9 can drive the adjustment plate 3 to reset after the wind force is lost. At the same time, it can also change the moving distance of the internal slide rod 8 under the action of wind according to the deformation amount of the spring when it is subjected to force, thereby achieving a rough match between the wind force level and the displacement of the internal slide rod 8, that is, achieving a match between the opening of the gap of the adjustment plate 3 and the wind force level.

[0041] An internal fixing rod 14 is provided inside the second slotted hollow rod 12, and a plurality of spring pieces 17 whose elastic modulus matches the wind force level from the inside to the outside are mirror-imaged on the internal fixing rod 14. One end of the spring piece 17 is connected to the internal fixing rod 14, and the other end of the spring piece 17 extends outward from the slot of the second slotted hollow rod 12. When the sliding blade 13 slides on the second slotted hollow rod 12, it will contact the spring piece 17. Therefore, by setting spring pieces 17 with different elastic moduli, the thrust of the sliding blade 13 bending the spring piece 17 and then passing over the spring piece 17 can be achieved. Since the elastic modulus of the spring piece 17 can be achieved by design, the accuracy of matching with the wind force level through the design of the elastic modulus is higher (the accuracy of matching the wind force level through the compression deformation of the return spring 9 is low).

[0042] The spring piece 17 is located at one end of the second slotted hollow rod 12, and the two side surfaces are rotatably connected to the internal fixed rod 14. The second rotating shaft 16 is used to rotatably connect to the mounting plate 15. The mounting plate 15 is fixed to the two sides of the surface of the internal fixed rod 14, and a baffle 18 is provided on the side of the end close to the center of the second slotted hollow rod 12. The baffle 18 is fixed to the internal fixed rod 14. The spring piece 17 and the internal fixed rod 14 are respectively provided with mutually repelling permanent magnets, specifically including a first permanent magnet 19 arranged on the internal fixed rod 14 and a second permanent magnet 20 arranged on the spring piece 17. When the wind direction changes, the sliding blade 13 moves in the opposite direction and can directly push down the spring piece 17 in contact with it (the spring piece 17 that has been in contact with one side when the wind direction has not changed), and then quickly return to the initial position in the middle of the second slotted hollow rod 12, and then contact the spring piece 17 set on the other side. At the same time, the pushed down spring piece 17 will rotate upward by a certain angle under the action of the magnet, so as to facilitate contact with the sliding blade 13 when the wind direction changes next time (since the spring piece 17 rotates unidirectionally, it needs to bend and deform after contact before it can pass). The function of the baffle 18 is to limit the rotation direction of the spring piece 17.

[0043] Torsion springs are provided at the rotating connection parts at both ends of the adjusting plate 3 to improve the reset effect of the adjusting plate 3 when there is no wind. A pull rope is provided above the hollow bridge deck 2. One end of the pull rope is fixedly connected to one end of the hollow slide bar. The pull rope can directly control the opening degree of the adjusting plate 3, and thus manual control can be realized according to requirements. A fixed pulley is provided at the end of the first grooved hollow rod 7, and the pull rope is wound around the fixed pulley.

[0044] The sliding vane 13 includes a first sliding ring and a plurality of wind blocking vanes evenly arranged on the first sliding ring. A groove is provided on the first sliding ring for sliding sleeving. A convex rib is provided in the length direction of the second grooved hollow rod 12, and the groove is slidably sleeved on the convex rib to limit rotation and avoid entanglement of the traction rope 10. It should be noted that the plurality of wind blocking vanes are arranged on the same plane, and the side surfaces of the wind blocking vanes are parallel to the side surface of the first sliding ring, so that it does not rotate under the action of wind and only serves as the windward surface and is pushed by the wind.

[0045] As Figure 10 shown, a second sliding ring 24 is provided at the end of the suspension rope 5 connected to the inner slide bar 8. The second sliding ring 24 is sleeved on the inner slide bar 8. A retaining ring 25 is provided on the outer side of the side surface of the second sliding ring 24 facing the center of the same adjusting plate 3, and the retaining ring 25 is fixed to the inner slide bar 8. When blown by the wind, one side of the suspension rope 5 slides on the slide rod, and the other side moves together with the inner slide bar 8 under the action of the retaining ring 25. That is, one side of the suspension rope 5 has a moment, and the other side does not. Therefore, it will rotate towards the side with the moment, and thus, with the cooperation of the retaining bar 23, the opening and closing effect of the adjusting plate 3 is further improved.

[0046] Embodiment 2

[0047] The difference between this embodiment and Embodiment 1 lies in the different connection methods of the second grooved hollow rod 12. Specifically, in this specific embodiment, a connecting rod is provided in the middle of the second grooved hollow rod 12. One end of the connecting rod is rotatably connected to the middle of the second grooved hollow rod 12, and the other end is fixed to the side box girder 1. A wind vane is provided on the second grooved hollow rod 12. The setting of the wind vane enables the blades to always face the direction of the wind, further improving the matching effect with the wind force level. It is not difficult to understand that a blocking element needs to be provided to control the rotation angle of the second grooved hollow rod 12 to avoid entanglement of the traction rope 10 caused by rotation.

[0048] Embodiment 3

[0049] The difference between Embodiment 3 and Embodiment 1 lies in the different connection method with the adjusting plate 3. Specifically, the suspension rope 5 is replaced and fixed to the gear on the first rotating shaft 4. There is also a gear for adjusting the rotation direction provided below the gear. The two gears are meshed. The internal sliding rod 8 is replaced by a rack that is slidably connected to the first slotted hollow rod 7. The rack is meshed with the gear for adjusting the direction. At the same time, the traction rope 10 is fixed to both ends of the rack.

[0050] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge, comprising side box girders arranged on both sides and a hollow bridge deck arranged between the side box girders, characterized in that: The lower surface of the hollow bridge deck is provided with a number of adjusting plates arranged along the width direction of the hollow bridge deck. The middle parts of both ends of the adjusting plates are rotatably connected to the side box girders. Below both ends of the adjusting plates, there are wind-driven mechanisms for controlling the rotation angle of the adjusting plates. The wind-driven mechanisms include a number of suspension ropes, a first grooved hollow rod, an internal sliding rod, a second grooved hollow rod, a traction rope, and sliding blades. The first grooved hollow rod is arranged along the width direction of the hollow bridge plate and is fixed to the side box girders at both ends. The internal sliding rod is slidably arranged in the first grooved hollow rod. One ends of the number of suspension ropes are respectively fixed to the two edges in the width direction of the number of adjusting plates, and the other ends are fixedly connected to the internal sliding rod. On the outer sides of the suspension ropes arranged on the same adjusting plate, there are stop rods. One end of the stop rod is fixed to the side box girder. The second grooved hollow rod is arranged parallel to the first grooved hollow rod below and is connected to the side box girders at both ends. The sliding blades are slidably sleeved on the second grooved hollow rod. The traction rope is arranged at both ends of the first hollow rod, and one end of the traction rope is fixed to the end of the internal sliding rod, and the other end is fixed to the side of the sliding blade.

2. The wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 1, characterized in that: Between the two ends of the internal sliding rod and the two ends of the first hollow rod, there are return springs, and the traction rope is located inside the return springs.

3. The wind resistance device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 1, characterized in that: Inside the second grooved hollow rod, there is an internal fixed rod. On the internal fixed rod, there are a number of elastic pieces mirror-symmetrically arranged, and the elastic modulus from the inside to the outside of the elastic pieces matches the wind force level. One end of the elastic piece is connected to the internal fixed rod, and the other end of the elastic piece extends outwards from the groove of the second grooved hollow rod.

4. The wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 3, characterized in that: Both side surfaces of the end of the elastic piece located inside the second grooved hollow rod are rotatably connected to the internal fixed rod. On one side close to the center of the second grooved hollow rod at this end, there is a stop piece, and the stop piece is fixed to the internal fixed rod. On the elastic piece and the internal fixed rod, there are permanent magnets that repel each other.

5. The wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 1, characterized in that: On the rotating connection parts at both ends of the adjusting plate, there are torsion springs.

6. The wind resistance device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 1, characterized in that: Above the hollow bridge deck, there is a pull rope, and one end of the pull rope is fixedly connected to one end of the hollow sliding rod.

7. The wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 1, characterized in that: At the end of the first grooved hollow rod, there is a fixed pulley, and the pull rope is wound around the fixed pulley.

8. The wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 1, wherein: The sliding blade includes a first sliding ring and a number of windward blades evenly arranged on the first sliding ring. The first sliding ring is slidably sleeved on the second grooved hollow rod. There is a groove on the first sliding ring, and there is a convex rib in the length direction of the second grooved hollow rod, and the groove is slidably sleeved on the convex rib.

9. The wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 1, wherein: At the end of the suspension rope connected to the internal sliding rod, there is a second sliding ring, and the second sliding ring is sleeved on the internal sliding rod. On the outer side of the side surface of the second sliding ring facing the center of the same adjusting plate, there is a retaining ring, and the retaining ring is fixed to the internal sliding rod.

10. The wind-resistant device for the bridge deck of a long-span pedestrian landscape suspension bridge according to claim 1, wherein: In the middle of the second grooved hollow rod, there is a connecting rod. One end of the connecting rod is rotatably connected to the middle of the second grooved hollow rod, and the other end is fixed to the side box girder. There is a wind vane on the second grooved hollow rod.

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