Bridge vortex-induced vibration control device and bridge

Abstract

The present invention belongs to the technical field of bridges, and specifically provides a bridge vortex-induced vibration control device and a bridge. The bridge vortex-induced vibration control device includes a guide rail, a mobile platform, a web, a first drive mechanism, a base plate, and a second drive mechanism. The mobile platform can move along the length direction of the guide rail, the first drive mechanism can adjust the inclination angle of the web, and the second drive mechanism can adjust the inclination angle of the base plate. The present invention can adjust the position of the mobile platform and the inclination angles of the web and the base plate according to changes in the wind environment, thereby effectively optimizing the flow path of the wind and reducing the direct impact of wind loads on the bridge. The present invention overcomes the limitations of traditional passive control measures that rely on fixed structural design, improves the flexibility and adaptability of its own control effect, and ensures that the bridge vortex-induced vibration control device can achieve the best effect under different wind speed and wind direction conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of bridges, and in particular relates to a bridge vortex-induced vibration control device and a bridge. Background Art

[0002] Vortex-induced vibration is a wind-induced vibration phenomenon that occurs in long-span bridges at low wind speeds. It generally occurs at normal wind speeds and has a high frequency. As the total construction volume of long-span bridges in my country has increased year by year, and large-span bridges have shown a trend of super-large spans and lightweight structures, the sensitivity of bridges to wind loads has also increased, which makes the vortex-induced vibration phenomenon more frequent and obvious in long-span bridges. Although vortex-induced vibration is a limited-amplitude vibration, excessive amplitude will also affect the normal use of the bridge and the driving safety of vehicles. Therefore, studying how to effectively suppress the vortex-induced vibration phenomenon and ensure the long-term operational safety and stability of bridges has become an important topic in the field of bridge design.

[0003] At present, there are many control measures for vortex-induced vibration of bridges, mainly focusing on optimizing the design of bridge sections, installing guide plates or stabilizers around bridges, adding wind nozzles on the edges of bridges, etc. The above measures have the advantages of simple structure and easy maintenance, and are widely used in bridge design and reconstruction.

[0004] The vortex-induced vibration control effect of a bridge is affected by many factors such as the bridge's geometry, size, wind direction and wind speed, and the above control measures are all fixed structural designs that cannot flexibly adapt to different wind speeds, wind directions or climatic conditions after construction. This results in the single structural design of the bridge in the existing technology being unable to respond optimally to various environmental conditions, and ultimately failing to achieve the expected vortex-induced vibration control effect. Summary of the invention

[0005] The present invention provides a bridge vortex-induced vibration control device and a bridge, aiming to solve the problem in the prior art that the bridge structure design cannot be adjusted according to various environmental working conditions.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] In a first aspect, the present invention provides a bridge vortex-induced vibration control device, comprising a guide rail, a mobile platform, a web, a first drive mechanism, a bottom plate, and a second drive mechanism;

[0008] The guide rail is extended along the width direction of the bridge body, and the movable platform is movably arranged on the guide rail;

[0009] The web is arranged vertically and extends along the length direction of the bridge body, the upper part of the web is hinged to the mobile platform, and the first driving mechanism is used to drive the web to rotate around an axis parallel to the length direction of the bridge body;

[0010] The bottom plate is horizontally arranged and extends along the length direction of the bridge body. The bottom plate is hinged to the lower part of the web. The second driving mechanism is used to drive the bottom plate to rotate around an axis parallel to the length direction of the bridge body.

[0011] In a possible implementation, a plurality of guide rails are provided at intervals along the length direction of the bridge body, a plurality of mobile platforms are provided corresponding to the guide rails, and the mobile platforms are movably disposed on the corresponding guide rails.

[0012] In a possible implementation, the bridge vortex-induced vibration control device further includes a collection device, and the collection device is used to collect wind speed and wind attack angle around the bridge.

[0013] In a possible implementation, two opposite sides of the guide rail are respectively provided with movement grooves, and the movement grooves extend along the length direction of the guide rail;

[0014] The mobile platform comprises:

[0015] A mounting seat having a receiving groove, the receiving groove is open at the top and is used to receive the guide rail, and the upper part of the web is hinged to the mounting seat; and

[0016] A plurality of movable wheels are respectively arranged on the two opposite side walls of the accommodating groove, the outer periphery of the movable wheel abuts against the bottom wall of the corresponding movable groove, and the movable wheel is rotatably arranged on the mounting seat; wherein at least one of the movable wheels is a driving wheel.

[0017] In a possible implementation, the side wall of the guide rail is further provided with a plurality of limiting holes, and the plurality of limiting holes are arranged at intervals along the length direction of the guide rail;

[0018] The mobile platform also includes a limiting rod arranged on the mounting seat, the limiting rod is telescopically arranged along the opening direction of the limiting hole, and the limiting rod has a limiting state of being plugged and matched with the limiting hole, and a released state of being separated from the limiting hole.

[0019] In a possible implementation, the web includes:

[0020] a first plate body, arranged upright and extending along the length direction of the bridge body, the upper portion of the first plate body being hinged to the moving platform, the lower portion of the first plate body being provided with a first slide groove, the first slide groove opening facing downward, and the first driving mechanism being used for driving the first plate body to rotate; and

[0021] The second plate body is vertically arranged and extends along the length direction of the bridge body. The upper part of the second plate body is slidably arranged in the first sliding groove, and the lower part of the second plate body is hinged to the bottom plate.

[0022] In a possible implementation, the second driving mechanism includes a plurality of telescopic units, which are respectively arranged on both sides of the first plate body, wherein the upper ends of the telescopic units are hinged to the first plate body, and the lower ends of the telescopic units are hinged to the bottom plate.

[0023] In a possible implementation, the base plate includes:

[0024] A third plate body is horizontally arranged, the third plate body is hinged to the lower part of the web, the third plate body is provided with a second slide groove, and the second slide groove is opened along the length direction of the guide rail;

[0025] a fourth plate body, arranged horizontally, wherein the fourth plate body is slidably arranged in the second sliding groove; and

[0026] The third driving mechanism is arranged on the third plate body and is used for driving the fourth plate body to slide in the second sliding groove.

[0027] In a possible implementation, the middle portion of the third plate body is hinged to the lower portion of the web, and in the width direction of the bridge body, the second slide grooves are respectively provided at both ends of the third plate body, and the fourth plate body is provided with two corresponding second slide grooves.

[0028] Compared with the prior art, the bridge vortex-induced vibration control device provided by the present invention has the following beneficial effects:

[0029] The bridge vortex-induced vibration control device provided by the present invention includes a guide rail, a mobile platform, a web, a first drive mechanism, a base plate, and a second drive mechanism, wherein the guide rail is used to be installed at the lower part of the bridge body, the mobile platform can move along the length direction of the guide rail, the first drive mechanism can adjust the inclination angle of the web, and the second drive mechanism can adjust the inclination angle of the base plate. With such an arrangement, the bridge vortex-induced vibration control device provided by the present invention can adjust the position of the mobile platform and the inclination angles of the web and the base plate according to changes in the wind environment, thereby effectively optimizing the flow path of the wind and reducing the direct impact of wind loads on the bridge. The present invention overcomes the limitations of traditional passive control measures that rely on fixed structural design, improves the flexibility and adaptability of its own control effect, and ensures that the bridge vortex-induced vibration control device can achieve the best effect under different wind speed and wind direction conditions.

[0030] In a second aspect, the present invention provides a bridge, comprising:

[0031] The bridge itself; and

[0032] As described in any of the above-mentioned implementation modes, the bridge vortex-induced vibration control device is provided with at least one guide rail disposed below the bridge body.

[0033] The bridge provided by the present invention includes a bridge body and a bridge vortex-induced vibration control device as described in any of the above-mentioned implementation methods, and has the same technical effects as those described above, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A three-dimensional diagram of a bridge vortex-induced vibration control device provided by an embodiment of the present invention;

[0035] Figure 2 for Figure 1 A partial enlarged view of the middle A part;

[0036] Figure 3 A stereogram of a mobile platform;

[0037] Figure 4 A three-dimensional cross-sectional view of a bridge vortex-induced vibration control device provided by an embodiment of the present invention;

[0038] Figure 5 A partial cross-sectional view of the web, the bottom plate and the second drive mechanism;

[0039] Figure 6 A three-dimensional diagram of a bridge provided by an embodiment of the present invention from a top-down perspective;

[0040] Figure 7 A three-dimensional diagram of a bridge provided by an embodiment of the present invention when viewed from an upward angle;

[0041] Figure 8 A front view of a bridge provided by an embodiment of the present invention;

[0042] Fig. 9 The curves of vertical vibration amplitudes of five web height segment models measured at 0° wind attack angle versus wind speed;

[0043] Fig.10 Based on Fig. 9 The optimal value of the height of the belly plate under different wind speeds obtained from the curve;

[0044] Description of reference numerals:

[0045] 10. Bridge body; 20. Guide rail; 21. Moving groove; 22. Limiting hole; 30. Moving platform; 31. Mounting seat; 32. Moving wheel; 33. Driving motor; 34. Limiting rod; 40. Web; 41. First plate; 42. Second plate; 50. First driving mechanism; 60. Bottom plate; 61. Third plate; 62. Fourth plate; 621. Rack; 63. Third driving mechanism; 64. Locking mechanism; 641. Spring; 642. Locking pin; 643. Electromagnet; 70. Second driving mechanism; 71. Telescopic unit; 80. Collection equipment; DETAILED DESCRIPTION

[0046] 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.

[0047] It should be noted that when an element is referred to as being "fixed to", "fixed" or "fixedly disposed" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" or "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When an element is referred to as being "set to" or "disposed on" another element, it may be directly on the other element or there may be a central element. "Multiple" refers to two or more quantities. "At least one" refers to one or more quantities. "Several" refers to one or more quantities.

[0048] 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.

[0049] Please also read Figures 1 to 8 , the bridge vortex-induced vibration control device and the bridge provided by the present invention are described below.

[0050] See also Figures 1 to 6In the first aspect, an embodiment of the present invention provides a bridge vortex-induced vibration control device, which is installed on a bridge body 10, and includes a guide rail 20, a movable platform 30, a web 40, a first driving mechanism 50, a bottom plate 60, and a second driving mechanism 70; the guide rail 20 is extended along the width direction of the bridge body 10, and the movable platform 30 is movably arranged on the guide rail 20; the web 40 is vertically arranged and extends along the length direction of the bridge body 10, and the upper part of the web 40 is hinged to the movable platform 30, and the first driving mechanism 50 is used to drive the web 40 to rotate around an axis parallel to the length direction of the bridge body 10; the bottom plate 60 is horizontally arranged and extends along the length direction of the bridge body 10, and the bottom plate 60 is hinged to the lower part of the web 40, and the second driving mechanism 70 is used to drive the bottom plate 60 to rotate around an axis parallel to the length direction of the bridge body 10.

[0051] Compared with the prior art, the bridge vortex-induced vibration control device provided by the embodiment of the present invention has the following beneficial effects:

[0052] The bridge vortex-induced vibration control device provided in the embodiment of the present invention includes a guide rail 20, a mobile platform 30, a web 40, a first drive mechanism 50, a bottom plate 60, and a second drive mechanism 70, wherein the guide rail 20 is used to be installed at the lower part of the bridge body 10, the mobile platform 30 can move along the length direction of the guide rail 20, the first drive mechanism 50 can adjust the inclination angle of the web 40, and the second drive mechanism 70 can adjust the inclination angle of the bottom plate 60. In this way, the bridge vortex-induced vibration control device provided by the present invention can adjust the position of the mobile platform 30 and the inclination angles of the web 40 and the bottom plate 60 according to the changes in the wind environment, thereby effectively optimizing the flow path of the wind and reducing the direct impact of the wind load on the bridge. The embodiment of the present invention overcomes the limitations caused by the traditional passive control measures relying on the fixed structure design, improves the flexibility and adaptability of its own control effect, and ensures that the bridge vortex-induced vibration control device can play the best effect under different wind speed and wind direction conditions.

[0053] It should be noted that, for ease of understanding, the posture of the web 40 and the bottom plate 60 in the embodiment of the present invention is described as "the web 40 is arranged vertically, and the bottom plate 60 is arranged horizontally", which means that the web 40 and the bottom plate 60 are roughly in the posture direction. Since both the web 40 and the bottom plate 60 can be rotated within a certain range for angle adjustment, the web 40 being arranged vertically and the bottom plate 60 being arranged horizontally does not mean that they are absolutely vertical and horizontal.

[0054] The guide rail 20 in the embodiment of the present invention is used to be fixedly installed at the bottom of the bridge body 10. The guide rail 20 extends along the width direction of the bridge body 10. The guide rail 20 can be processed from raw materials such as I-beams and steel sections. The mobile platform 30 can move along the length direction of the guide rail 20. The mobile platform 30 can be driven by a built-in motor or by an external traction device (such as a winch). The position of the web 40 and the bottom plate 60 is adjusted by the mobile platform 30 to adapt to different wind environments.

[0055] like Figure 1 As shown, two or more mobile platforms 30 can be provided, and the multiple mobile platforms 30 are arranged at intervals along the length direction of the guide rail 20, and the multiple mobile platforms 30 can move independently without interfering with each other. A web 40 and a bottom plate 60 are connected below each mobile platform 30. The number of mobile platforms 30, webs 40 and bottom plates 60 can be determined according to factors such as the construction location of the bridge body 10, the weather conditions in the area, and the structure of the bridge body 10.

[0056] In the embodiment of the present invention, the web 40 and the bottom plate 60 are both plate-like components, which can be a single plate or an assembly obtained by combining multiple plates. The web 40 is arranged vertically, and the bottom plate 60 is arranged horizontally. The web 40 and the bottom plate 60 can rotate along the horizontal axis respectively, thereby changing the form of the bridge vortex-induced vibration control device to flexibly respond to the vibration problem of the bridge under complex meteorological conditions, and achieve the purpose of optimizing the bridge vortex-induced vibration.

[0057] The first driving mechanism 50 and the second driving mechanism 70 are both used to output rotational motion, and can specifically be telescopic components such as a telescopic cylinder, an electric telescopic rod, or a telescopic air cylinder, or can be rotational driving components such as a motor or a hydraulic rotary motor. The rotating shaft of the motor or the hydraulic rotary motor can be transmitted to the rotating shaft of the corresponding web 40 or the bottom plate 60 by means of gear transmission, chain transmission, or the like.

[0058] The mobile platform 30, the first drive mechanism 50 and the second drive mechanism 70 can be controlled by a microcontroller disposed on the bridge body 10. The microcontroller can detect the wind environment (such as wind speed, wind attack angle and other parameters) to which the bridge body 10 is subjected, and determine the best position that the mobile platform 30 should be in and the best tilt angle that the web 40 and the bottom plate 60 should be in based on the detection results, and then control the mobile platform 30, the first drive mechanism 50 and the second drive mechanism 70 to adjust the position and posture. The microcontroller can be a computer, which can receive and transmit signals through wireless networks and other means.

[0059] After the wind speed and wind attack angle are measured, the microcontroller can analyze and determine the optimal height / width and tilt angle that the web 40 and the bottom plate 60 should be in under the current wind environment according to the information in the database, and then adjust them. The above optimal height / width and tilt angle can be measured in a laboratory or obtained based on empirical analysis.

[0060] like Fig. 9 and Fig.10 As shown, Fig. 9 Based on the wind tunnel segment model test, the web height is changed at a wind attack angle of 0°, and the curve of the vertical vibration amplitude of the segment model with different web heights changes with wind speed is obtained; Fig.10 based on Fig. 9 The test results show that the optimal value of the web height at different wind speeds at a wind attack angle of 0° is obtained. Fig. 9 and Fig.10 It can be seen that when the bridge is in a wind environment with a wind attack angle of 0° and a wind speed of 3m / s, the optimal height of the web is 62.5mm.

[0061] See also Figure 1 , Figure 6 and Figure 7 In order to improve the stability and wind resistance of the mobile platform 30, and extend the service life of the bridge vortex-induced vibration control device. In some possible embodiments, the guide rail 20 and the mobile platform 30 are respectively provided with multiple intervals along the length direction of the bridge body 10, and the guide rail 20 and the mobile platform 30 correspond to each other one by one. The web 40 is hinged with multiple mobile platforms 30 at the same time, and the multi-point force is more stable and not easy to be damaged by failure.

[0062] See also Figure 6 and Figure 8 In some possible embodiments, the bridge vortex-induced vibration control device further includes a collection device 80, which is used to collect wind speed and wind attack angle around the bridge. The collection device 80 can specifically be a wind speed and wind direction sensor in the prior art, and multiple collection devices 80 can be provided as needed. Multiple collection devices 80 form an information collection system for collecting wind field information around the bridge body 10. The collection device 80 can specifically be provided on the outside of the bridge deck railing, and will not hinder the passage of the bridge deck.

[0063] In this embodiment, the acquisition device 80 is connected to the microcontroller for communication. On the one hand, the microcontroller can receive the real-time data collected by the acquisition device 80, and on the other hand, it can control the mobile platform 30, the first drive mechanism 50, the second drive mechanism 70, etc. to act according to the actual wind environment, ensuring that the bridge vortex-induced vibration control device can automatically adjust its shape and position according to changes in the wind environment. This embodiment realizes real-time monitoring and automatic adjustment functions through the acquisition device 80 and the microcontroller, so that the system can realize dynamic adjustment according to parameters such as wind speed and wind attack angle. This method overcomes the limitations of traditional passive measures that rely on fixed geometric shape design, making the control method more flexible, more adaptable, and having better control effect.

[0064] In this embodiment, the wind speed and wind attack angle acquisition device 80 is installed on the bridge deck to collect the wind speed and flow direction data of the environment in which the bridge body 10 is located in real time, and feed these data back to the microcontroller. The microcontroller controls the actions of each system (such as horizontal sliding, vertical extension, and angle adjustment) according to environmental changes to ensure that the bridge vortex-induced vibration control device can achieve the best effect under different wind speed and wind direction conditions. This mechanism solves the problem that traditional passive control cannot adapt to changing environments, and enables the system to flexibly respond to dynamic wind environments.

[0065] See also Figure 2 and Figure 3 In some possible embodiments, the guide rail 20 has a movable groove 21 on opposite sides, and the movable groove 21 extends along the length direction of the guide rail 20; the movable platform 30 includes a mounting seat 31 and a plurality of movable wheels 32. The mounting seat 31 has a receiving groove, the upper part of which is open and used to receive the guide rail 20, and the upper part of the web 40 is hinged to the mounting seat 31; the plurality of movable wheels 32 are respectively arranged on the opposite side walls of the receiving groove, the outer periphery of the movable wheel 32 abuts against the bottom wall of the corresponding movable groove 21, and the movable wheel 32 is rotatably arranged on the mounting seat 31; wherein, at least one movable wheel 32 is a driving wheel.

[0066] In this embodiment, the mobile platform 30 includes a mounting seat 31 and a plurality of moving wheels 32. The moving wheels 32 are located on both sides of the mounting seat 31, and play a supporting and limiting role, and can prevent the mounting seat 31 from separating from the guide rail 20. At least one moving wheel 32 is a driving wheel driven to rotate by a driving motor 33. When the moving wheel 32 rotates, the mounting seat 31 can move along the moving groove 21, thereby changing the position of the mobile platform 30. The electric energy of the driving motor 33 can be supplied by a battery or a power grid.

[0067] Since the web 40 and the bottom plate 60 are subject to strong wind force, in order to prevent the mobile platform 30 from sliding under the force of wind, it is necessary to set a limit structure on the mobile platform 30 to fix the mobile platform 30 in a certain position to adapt to strong winds. Figure 3In some possible embodiments, the side wall of the guide rail 20 is further provided with a plurality of limit holes 22, and the plurality of limit holes 22 are spaced apart along the length direction of the guide rail 20; the mobile platform 30 also includes a limit rod 34 provided on the mounting seat 31, and the limit rod 34 is telescopically provided along the opening direction of the limit hole 22, and the limit rod 34 has a limit state of being plugged in with the limit hole 22, and a release state of being detached from the limit hole 22.

[0068] In this embodiment, a limiting rod 34 is provided on the mounting seat 31. The limiting rod 34 is driven by a cylinder or an electric telescopic rod and can be extended and retracted along the opening direction of the limiting hole 22. When the mobile platform 30 is moved into position, the limiting rod 34 extends into the limiting hole 22 and is plugged into the limiting hole 22 to limit the movement of the mobile platform 30. When the position of the mobile platform 30 needs to be adjusted, the limiting rod 34 can be switched to the released state.

[0069] See also Figure 2 In some possible embodiments, the web 40 includes a first plate body 41 and a second plate body 42. The first plate body 41 is arranged vertically and extends along the length direction of the bridge body 10. The upper part of the first plate body 41 is hinged to the mobile platform 30. The lower part of the first plate body 41 is provided with a first slide groove, the first slide groove opening faces downward, and the first driving mechanism 50 is used to drive the first plate body 41 to rotate; the second plate body 42 is arranged vertically and extends along the length direction of the bridge body 10. The upper part of the second plate body 42 is slidably arranged in the first slide groove, and the lower part of the second plate body 42 is hinged to the bottom plate 60.

[0070] In this embodiment, the web 40 adopts a retractable design. The web 40 includes a first plate body 41 and a second plate body 42. The second plate body 42 is slidably disposed on the first plate body 41 and can move along the first slide groove, thereby changing the size of the web 40 for adjustment to different wind environments.

[0071] Optionally, the telescopic action of the second plate body 42 can be driven by a hydraulic cylinder, an electric telescopic rod, a telescopic cylinder, etc., or by a gear rack mechanism, a screw slider mechanism, etc. The user can choose the setting according to the actual situation.

[0072] See also Figure 1 , Figure 4 and Figure 5 In some possible embodiments, the second driving mechanism 70 includes a plurality of telescopic units 71, and the plurality of telescopic units 71 are respectively arranged on both sides of the first plate body 41, the upper end of the telescopic unit 71 is hinged to the first plate body 41, and the lower end of the telescopic unit 71 is hinged to the bottom plate 60.

[0073] In this embodiment, the telescopic unit 71 is one of an electric telescopic rod, a hydraulic cylinder, and a telescopic cylinder, and a plurality of telescopic units 71 are respectively arranged on both sides of the first plate body 41. In this arrangement, on the one hand, by controlling the telescopic lengths of the telescopic units 71 on both sides, the inclination angle of the bottom plate 60 can be changed. On the other hand, when the telescopic lengths of the telescopic units 71 on both sides are the same, the telescopic length of the second plate body 42 can also be changed. That is, by arranging a plurality of telescopic units 71 distributed on both sides of the first plate body 41, it is possible to change the inclination angle of the bottom plate 60 and adjust the telescopic length of the second plate body 42, killing two birds with one stone.

[0074] See also Figure 2 , Figure 4 and Figure 5 In some possible embodiments, the bottom plate 60 includes a third plate body 61, a fourth plate body 62 and a third driving mechanism 63. The third plate body 61 is horizontally arranged, the third plate body 61 is hinged to the lower part of the web 40, and the third plate body 61 is provided with a second slide groove, which is open along the length direction of the guide rail 20; the fourth plate body 62 is horizontally arranged, and the fourth plate body 62 is slidably arranged in the second slide groove; the third driving mechanism 63 is arranged on the third plate body 61, and is used to drive the fourth plate body 62 to slide in the second slide groove.

[0075] In this embodiment, the bottom plate 60 adopts a telescopic structure, and the bottom plate 60 includes a third plate body 61, a fourth plate body 62 and a third driving mechanism 63. The fourth plate body 62 is slidably matched with the third plate body 61, and the width of the bottom plate 60 can be adjusted to facilitate adjustment for different wind environments.

[0076] The third driving mechanism 63 is used to drive the fourth plate 62 to slide along the second slide groove. The third driving mechanism 63 can be driven by a hydraulic cylinder, an electric telescopic rod, a telescopic cylinder, etc., or by a servo motor. The servo motor realizes power transmission through a gear rack 621 mechanism, a screw slider mechanism, etc., to drive the fourth plate 62 to move. The precise control of the servo motor enables the system to have sufficient adjustment accuracy, can cope with large changes in wind speed, and ensure aerodynamic effects.

[0077] Both the web 40 and the base plate 60 are designed to be retractable and rotatable. By actively adjusting parameters such as the position of the mobile platform 30, the width of the base plate 60, the height of the web 40, and the inclination angles of the web 40 and the base plate 60, multi-dimensional adjustments such as horizontal sliding, vertical and horizontal retraction, and angle adjustment can be achieved. This enables the bridge vortex-induced vibration control device to cope with changes in different wind loads, optimize the wind flow path, reduce the direct impact of wind loads on the bridge, and avoid the problem of failure of traditional passive devices under extreme wind speeds.

[0078] like Figure 3As shown, the third driving mechanism 63 includes a gear and a motor that drives the gear to rotate, and the fourth plate body 62 is provided with a rack 621 that meshes with the gear. In order to lock and fix the fourth plate body 62, a locking mechanism 64 is also provided. The locking mechanism 64 can be a mechanical mechanism such as a telescopic rod and a ratchet.

[0079] like Figure 3 As shown, the locking mechanism 64 includes a spring 641, a lock pin 642 and an electromagnet 643. The third plate 61 is provided with a slot for accommodating the lock pin 642 and the spring 641. The lock pin 642 is slidably disposed in the slot and is located below the fourth plate 62. The end of the lock pin 642 faces the rack 621. An electromagnet 643 is disposed below the lock pin 642. The electromagnet 643 is energized to generate a magnetic attraction force to attract the lock pin 642 and keep the lock pin 642 away from the rack 621. When the fourth plate 62 needs to be limited, the electromagnet 643 is de-energized, and the lock pin 642 moves upward under the elastic force of the spring 641, and the lock pin 642 is inserted between the two teeth of the rack 621, thereby limiting the movement of the fourth plate 62.

[0080] See also Figure 2 and Figure 5 In some possible embodiments, the middle part of the third plate body 61 is hinged to the lower part of the web 40, and in the width direction of the bridge body 10, the second sliding grooves are respectively provided at both ends of the third plate body 61, and the fourth plate body 62 is provided with two corresponding second sliding grooves. The two fourth plate bodies 62 can be extended and retracted independently without affecting each other.

[0081] It is understandable that in order to achieve precise adjustment, the angle and position of moving components such as the web 40 and the base plate 60 can be monitored by detection elements such as angle sensors, displacement sensors, and distance sensors to provide accurate distance and angle feedback to the microcontroller, thereby providing accuracy in the control of vortex-induced vibration of the bridge.

[0082] See also Figure 6 , Figure 7 and Figure 8 In a second aspect, an embodiment of the present invention provides a bridge, including a bridge body 10, and a bridge vortex-induced vibration control device in any of the above embodiments, wherein at least one bridge vortex-induced vibration control device is provided, and a guide rail 20 is provided below the bridge body 10. Multiple vortex-induced vibration control devices may also be provided along the length or width direction of the bridge body 10.

[0083] Compared with conventional bridge vortex-induced vibration control measures, the present invention realizes dynamic automatic control, real-time data feedback, multi-dimensional adjustment and modular design, which greatly improves the adaptability, accuracy and reliability of the system. It can not only cope with complex wind environments more flexibly, but also provide a wider range of vibration control effects, which can meet the long-term maintenance needs of bridges.

[0084] 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.

[0085] 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 vortex-induced vibration control device, characterized in that: It comprises a guide rail (20), a movable platform (30), a web (40), a first driving mechanism (50), a bottom plate (60), and a second driving mechanism (70); The guide rail (20) is extended along the width direction of the bridge body (10), and the movable platform (30) is movably arranged on the guide rail (20); The web (40) is arranged upright and extends along the length direction of the bridge body (10); the upper portion of the web (40) is hinged to the mobile platform (30); and the first driving mechanism (50) is used to drive the web (40) to rotate around an axis parallel to the length direction of the bridge body (10); The bottom plate (60) is arranged horizontally and extends along the length direction of the bridge body (10); the bottom plate (60) is hinged to the lower part of the web (40); and the second driving mechanism (70) is used to drive the bottom plate (60) to rotate around an axis parallel to the length direction of the bridge body (10); The guide rail (20) has movable grooves (21) on two opposite sides respectively, and the movable grooves (21) extend along the length direction of the guide rail (20); The mobile platform (30) comprises: A mounting seat (31) having a receiving groove, the receiving groove being open at the top and used to receive the guide rail (20), the upper portion of the web (40) being hingedly connected to the mounting seat (31); and A plurality of moving wheels (32) are respectively arranged on opposite side walls of the containing groove, the outer periphery of the moving wheel (32) abuts against the bottom wall of the corresponding moving groove (21), and the moving wheel (32) is rotatably arranged on the mounting seat (31); wherein at least one of the moving wheels (32) is a driving wheel; The web (40) comprises: a first plate body (41), the first plate body (41) being arranged upright and extending along the length direction of the bridge body (10), the upper portion of the first plate body (41) being hinged to the movable platform (30), the lower portion of the first plate body (41) being provided with a first slide groove, the first slide groove opening facing downward, and the first driving mechanism (50) being used for driving the first plate body (41) to rotate; and a second plate body (42), the second plate body (42) being arranged upright and extending along the length direction of the bridge body (10), the upper portion of the second plate body (42) being slidably arranged in the first sliding groove, and the lower portion of the second plate body (42) being hinged to the bottom plate (60); The bottom plate (60) comprises: a third plate body (61), the third plate body (61) being arranged horizontally, the third plate body (61) being hinged to the lower part of the web (40), the third plate body (61) being provided with a second slide groove, the second slide groove being open along the length direction of the guide rail (20); a fourth plate body (62), the fourth plate body (62) being arranged horizontally, and the fourth plate body (62) being slidably arranged in the second sliding groove; and A third driving mechanism (63), the third driving mechanism (63) being arranged on the third plate body (61) and being used for driving the fourth plate body (62) to slide in the second sliding groove.

2. The bridge vortex-induced vibration control device according to claim 1, characterized in that: A plurality of guide rails (20) are arranged at intervals along the length direction of the bridge body (10), a plurality of movable platforms (30) are arranged corresponding to the guide rails (20), and the movable platforms (30) are movably arranged on the corresponding guide rails (20).

3. The bridge vortex-induced vibration control device according to claim 1, characterized in that: The bridge vortex-induced vibration control device also includes a collection device (80), wherein the collection device (80) is used to collect wind speed and wind attack angle around the bridge.

4. The bridge vortex-induced vibration control device according to claim 1, characterized in that: The side wall of the guide rail (20) is further provided with a plurality of limiting holes (22), and the plurality of limiting holes (22) are arranged at intervals along the length direction of the guide rail (20); The mobile platform (30) further comprises a limiting rod (34) arranged on the mounting seat (31), the limiting rod (34) being telescopically arranged along the opening direction of the limiting hole (22), the limiting rod (34) having a limiting state of being plugged into and matched with the limiting hole (22), and a released state of being detached from the limiting hole (22).

5. The bridge vortex-induced vibration control device according to claim 1, characterized in that: The second driving mechanism (70) comprises a plurality of telescopic units (71), wherein the plurality of telescopic units (71) are respectively arranged on both sides of the first plate body (41), the upper ends of the telescopic units (71) are hinged to the first plate body (41), and the lower ends of the telescopic units (71) are hinged to the bottom plate (60).

6. The bridge vortex-induced vibration control device according to claim 1, characterized in that: The middle portion of the third plate body (61) is hinged to the lower portion of the web (40), and in the width direction of the bridge body (10), the second sliding grooves are respectively provided at both ends of the third plate body (61), and the fourth plate body (62) is provided with two corresponding second sliding grooves.

7. A bridge, characterized in that: include: Bridge body (10); as well as The bridge vortex-induced vibration control device according to any one of claims 1 to 6, wherein the bridge vortex-induced vibration control device is provided with at least one guide rail (20) disposed below the bridge body (10).

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