A wind barrier

Abstract

The utility model relates to bridge wind-induced vibration technical field, the utility model provides a kind of vibration suppression wind barrier, comprising: stand, stand is linear type, and stand includes first column body and second column body;Wind suppression unit, wind suppression unit is set between first column body and second column body, and wind suppression unit includes wind suppression top unit, at least one wind suppression middle unit and wind suppression bottom unit, each wind suppression unit includes one wind suppression plate and two end plates, end plate is installed at the both ends of wind suppression plate, wind suppression plate is installed on stand by end plate, and wind hole is set on wind suppression plate, the section of each wind suppression plate is M type or double M type, and the wind suppression plate of wind suppression top unit is inclined to the side away from bridge direction.The vibration suppression wind barrier of the utility model, the wind suppression plate of wind suppression top unit is inclined to the side away from bridge direction, forms airflow guide surface, converts transverse wind into flow along the longitudinal direction of bridge, reduces vortex generation, thereby reduce vortex-induced vibration energy.

Description

Technical Field

[0001] This utility model relates to the field of bridge wind resistance technology, and more specifically, to a vibration damping wind barrier. Background Technology

[0002] At lower wind speeds, some long-span flexible bridges may experience vortex-induced vibration, threatening traffic safety and structural durability. To improve the wind resistance of bridges and reduce vortex-induced vibration of the main girder, wind barriers are often used as a primary means of improving the wind environment for traffic on the bridge deck. Existing technologies primarily employ two types of wind barriers: straight and curved. In straight wind barriers, the columns and wind-suppressing panels are arranged vertically, while in curved wind barriers, the columns and wind-suppressing panels are arranged in an arc shape towards the inside of the road. Straight wind barriers mainly serve to block wind and have a limited effect on optimizing the dynamic response of the main girder; curved wind barriers are more difficult to manufacture by bending the columns and also have inward intrusion into the road line, both of which present certain shortcomings.

[0003] In view of the above, this utility model is hereby proposed. Utility Model Content

[0004] The purpose of this invention is to propose a vibration-damping wind barrier to address the shortcomings of existing technologies. Straight wind barriers mainly serve to block the wind and have little effect on optimizing the dynamic response of the main beam; while curved wind barriers are difficult to process by bending the columns and have inward intrusion lines.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A vibration-damping wind barrier, the vibration-damping wind barrier comprising:

[0007] The column is straight, and there are two columns, each including a first column and a second column.

[0008] A wind suppression unit is disposed between the first column and the second column. The wind suppression unit includes a top wind suppression unit, at least one middle wind suppression unit, and a bottom wind suppression unit. Each wind suppression unit includes a wind suppression plate and two end plates. The end plates are installed at both ends of the wind suppression plate, which is then mounted on the column. Ventilation holes are provided on the wind suppression plate.

[0009] Each of the wind-suppressing panels has an M-shaped or double M-shaped cross section, and the wind-suppressing panel of the top wind-suppressing unit is inclined toward the side away from the bridge.

[0010] Furthermore, the wind-suppressing plate of the wind-suppressing top unit is tilted at an angle α toward the side away from the bridge, where α is 10 to 20°.

[0011] Furthermore, the wind suppression plate includes an upper plate, an upper side plate, an upper connecting plate, a middle plate, a lower connecting plate, a lower side plate, and a lower plate connected sequentially from top to bottom. The upper plate is horizontally positioned above the wind suppression plate, and the upper side plate is positioned at the lower end of one side of the upper plate. The lower plate is horizontally positioned below the upper plate, and the lower side plate is positioned at the upper end of one side of the lower plate. The lower side plate and the upper side plate are positioned on the same side. The middle plate is positioned between the upper side plate and the lower side plate, and is positioned on the opposite side to the lower side plate and the upper side plate. An upper connecting plate is connected between the upper side plate and the middle plate, and a lower connecting plate is connected between the lower side plate and the middle plate.

[0012] Furthermore, in the wind-suppressing top unit, the upper side plate, upper connecting plate, middle plate, lower connecting plate, and lower side plate are tilted at an angle α toward the side away from the bridge.

[0013] Furthermore, in the wind-suppressing middle unit and the wind-suppressing bottom unit, the middle plate is vertically arranged; the upper side plate is vertically arranged at the lower end of one side of the upper plate; and the lower side plate is vertically arranged at the upper end of one side of the lower plate.

[0014] Furthermore, when installing the top wind-suppressing unit and the middle wind-suppressing unit, the opening of the wind-suppressing plate faces away from the bridge; when installing the bottom wind-suppressing unit, the opening of the wind-suppressing plate faces closer to the bridge.

[0015] Furthermore, a side plate is provided on the same side around the body of the end plate, the side plate and the body forming a mounting groove, and the end of the wind-suppressing plate is installed in the mounting groove.

[0016] Furthermore, clearance grooves are provided at the upper and lower ends of the mounting groove, and first protruding edges are provided at the upper and lower ends of the wind suppressor plate. The clearance grooves are used to avoid the first protruding edges, and mounting buckles are provided on the first protruding edges. The wind suppressor plate is engaged with the end plate through the mounting buckles.

[0017] Furthermore, the lower end of the column is installed on the base using pre-embedded bolts.

[0018] Furthermore, the ventilation holes include a first through hole and a second through hole, which are alternately arranged on the wind-suppressing plate.

[0019] This utility model proposes a vibration-damping wind barrier, which, compared with the prior art, has the following beneficial effects:

[0020] (1) The wind-suppressing barrier described in this utility model has a wind-suppressing plate in the top unit that is tilted away from the bridge to form an airflow guiding surface, which converts the transverse wind into a flow along the longitudinal direction of the bridge, reduces the generation of vortices, and thus reduces the energy of vortex-induced vibration. On the one hand, it improves the safety and comfort of train operation; on the other hand, it reduces fatigue damage to the bridge structure, extends the service life, and reduces long-term maintenance costs. The cross section of each wind-suppressing plate is M-shaped or double M-shaped. On the one hand, the M-shaped structure disperses the wind pressure through the upper and lower grooves, reduces the local stress concentration on the surface of the wind-suppressing plate, and avoids vibration or fatigue damage caused by uneven wind pressure. On the other hand, the groove design can induce the airflow to form a wall-attachment effect, enhance the adhesion between the airflow and the wind-suppressing plate, and further improve the wind guiding efficiency.

[0021] (2) The vibration damping wind barrier described in this utility model improves the wind guiding performance of the vibration damping wind barrier compared with the straight wind barrier, which can further optimize the dynamic response of the main beam and improve the safety and comfort of train operation. Compared with the existing arc-shaped wind barrier, the column is straight. On the one hand, it does not require special processing and can be achieved by using standard H-beams. The structure is simple, the processing and installation are convenient, and the economy is good. On the other hand, the straight column does not occupy the inner space of the bridge deck, avoiding the interference of the arc-shaped wind barrier on the bridge maintenance passage or cable laying.

[0022] (3) In the vibration damping wind barrier described in this utility model, the wind damping plate of the wind damping top unit is tilted at an angle α away from the side of the bridge, where α is 10-20°. Within this range, α ensures that the wind damping top unit forms a sufficient airflow guiding surface with good wind guiding performance, while also preventing interference between the wind damping plate and the column, ensuring installation feasibility, and preventing wind pressure concentration at the edge of the plate due to excessive angle, thus avoiding local vibration. If α is less than 10°, the wind guiding effect is insufficient, and the vortex shedding mode cannot be significantly changed, thus failing to achieve the effect of optimizing the dynamic response of the main beam; if α is greater than 20°, it cannot be installed inside the column. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a vibration-damping wind barrier according to an embodiment of the present utility model;

[0024] Figure 2 This is a front view schematic diagram of a vibration-damping wind barrier according to an embodiment of the present utility model;

[0025] Figure 3 This is a side cross-sectional view of a vibration-damping wind barrier according to an embodiment of the present utility model;

[0026] Figure 4 This is one of the side view structural schematic diagrams of the wind-suppressing plate of a vibration-damping wind barrier according to an embodiment of this utility model;

[0027] Figure 5 This is one of the three-dimensional structural schematic diagrams of the wind-suppressing plate of a vibration-damping wind barrier according to an embodiment of the present utility model;

[0028] Figure 6 This is a second side view of the wind-suppressing plate of a vibration-damping wind barrier according to an embodiment of the present utility model;

[0029] Figure 7 This is a second three-dimensional structural schematic diagram of the wind-suppressing plate of a vibration-damping wind barrier according to an embodiment of this utility model;

[0030] Figure 8 This is a three-dimensional structural diagram of the end plate of a vibration-damping wind barrier according to an embodiment of the present utility model;

[0031] Figure 9 This is a side view of the end plate of a vibration damping wind barrier according to an embodiment of the present invention.

[0032] Figure 10 This is a three-dimensional structural diagram of a column for a vibration-damping wind barrier according to an embodiment of the present utility model;

[0033] Figure 11 This is a three-dimensional structural diagram of the wind-suppressing unit of a vibration-suppressing wind barrier according to an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Base; 2. Embedded bolts; 3. Base plate; 4. Reinforcing rib plate; 5. Column; 50. H-beam; 51. First column; 52. Second column; 501. Slot; 502. Cover plate; 6. Wind suppression unit; 61. Top wind suppression unit; 62. Middle wind suppression unit; 63. Bottom wind suppression unit; 601. Wind suppression plate; 6011. Upper plate; 6012. Lower plate; 6013. Middle plate; 6014. Upper... Side plate; 6015, lower side plate; 6016, upper connecting plate; 6017, lower connecting plate; 6018, first protruding edge; 6019, mounting buckle; 602, end plate; 6021, body; 6022, second protruding edge; 6023, mounting groove; 6024, clearance groove; 6025, first mounting hole; 603, ventilation hole; 6031, first through hole; 6032, second through hole; 8, rubber vibration damping pad. Detailed Implementation

[0036] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.

[0037] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] At lower wind speeds, some bridges with high flexibility may experience vortex-induced vibration. To improve the wind guidance performance of bridges and reduce vortex-induced vibration of the main girder, wind barriers are often used as a primary means of improving the wind environment for traffic on the bridge deck. Existing technologies primarily employ two types of wind barriers: straight and curved. In straight wind barriers, both the columns 5 and the wind-suppressing plates 601 are arranged vertically, while in curved wind barriers, both the columns 5 and the wind-suppressing plates 601 are arranged in an arc shape towards the inside of the roadway. Straight wind barriers mainly serve to block wind and have a limited effect on optimizing the dynamic response of the main girder; curved wind barriers are more difficult to manufacture by bending the columns 5 and also have inward intrusion into the roadway, both of which present certain shortcomings.

[0042] To address the aforementioned technical problems, this utility model provides a vibration-damping wind barrier, which is installed on both sides of a bridge, such as... Figures 1-11 As shown, the vibration damping wind barrier includes:

[0043] The column 5 is installed on the base 1 by pre-embedded bolts 2 at its lower end. The column 5 is straight and there are two columns 5. The column 5 includes a first column body 51 and a second column body 52. ​​The first column body 51 and the second column body 52 are spaced apart.

[0044] A wind suppression unit 6 is disposed between the first column 51 and the second column 52. The wind suppression unit 6 includes a top wind suppression unit 61, at least one middle wind suppression unit 62, and a bottom wind suppression unit 63. Each wind suppression unit 6 includes a wind suppression plate 601 and two end plates 602. The end plates 602 are installed at both ends of the wind suppression plate 601, and the wind suppression plate 601 is mounted on the column 5 via the end plates 602. Ventilation holes 603 are provided on the wind suppression plate 601.

[0045] Each of the wind-suppressing plates 601 has an M-shaped or double M-shaped cross section, and the wind-suppressing plate 601 of the wind-suppressing top unit 61 is inclined toward the side away from the bridge.

[0046] The vibration damping wind barrier described in this utility model has the following beneficial effects:

[0047] 1. The vibration damping wind barrier of this utility model has a wind damping plate 601 of the top unit 61 tilted away from the bridge, forming an airflow guiding surface. This converts lateral wind into longitudinal flow along the bridge, reducing vortex generation and thus reducing vortex-induced vibration energy. On the one hand, this improves the safety and comfort of train operation; on the other hand, it reduces fatigue damage to the bridge structure, extends its service life, and reduces long-term maintenance costs. Each wind damping plate 601 has an M-shaped or double M-shaped cross-section. On the one hand, the M-shaped structure disperses wind pressure through the upper and lower grooves, improving the structural strength of the wind damping plate 601, reducing local stress concentration on the surface of the wind damping plate 601, and avoiding vibration or fatigue damage caused by uneven wind pressure. On the other hand, the grooves on the M-shaped structure can induce airflow to form a wall-attachment effect, enhancing the adhesion between the airflow and the wind damping plate 601, further improving the airflow guiding efficiency. The tilted design of the top unit combined with the M-shaped cross-section disperses vortex-induced vibration energy to multiple frequency bands, avoiding resonance, extending the service life of the bridge, and improving the safety and comfort of train operation.

[0048] 2. The vibration damping wind barrier described in this utility model improves the wind guidance performance of the vibration damping wind barrier compared to a straight wind barrier, which can further optimize the dynamic response of the main beam and improve the safety and comfort of train operation. Compared to the existing curved wind barrier, the column 5 is straight. On the one hand, it does not require special processing and can be achieved by using standard H-beam 50, which is simple in structure, convenient in processing and installation, and economical. On the other hand, the straight column 5 does not encroach on the inner space of the bridge deck, avoiding interference from the curved wind barrier to the bridge maintenance passage or cable laying.

[0049] Specifically, in this embodiment, the cross-section of each wind suppression plate 601 is M-shaped.

[0050] Specifically, the wind-suppressing plate 601 of the wind-suppressing top unit 61 is tilted at an angle α toward the side away from the bridge, where α is 10 to 20°.

[0051] Within the aforementioned range, α ensures that the top unit 61 forms a sufficient airflow guiding surface with excellent airflow guiding performance, while also preventing interference between the wind-suppressing plate 601 and the column 5, ensuring installation feasibility. Simultaneously, it prevents wind pressure concentration at the plate edge due to excessive angle, thus avoiding localized vibration. If α is less than 10°, the airflow guiding effect is insufficient, failing to significantly alter the vortex shedding mode and failing to optimize the main beam's dynamic response. If α is greater than 20°, installation within the column 5 is not possible.

[0052] More specifically, in this embodiment, the wind-suppressing plate 601 of the wind-suppressing top unit 61 is tilted at an angle α away from the side away from the bridge, where α is 10°.

[0053] More specifically, in this embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the wind suppression unit 6 includes a wind suppression top unit 61, four wind suppression middle units 62, and a wind suppression bottom unit 63.

[0054] Specifically, such as Figure 4As shown, the wind suppressor 601 includes an upper plate 6011, an upper side plate 6014, an upper connecting plate 6016, a middle plate 6013, a lower connecting plate 6017, a lower side plate 6015, and a lower plate 6012 connected sequentially from top to bottom. The upper plate 6011 is horizontally disposed above the wind suppressor 601, and the upper side plate 6014 is disposed at the lower end of one side of the upper plate 6011. The lower plate 6012 is horizontally disposed below the upper plate 6011, and the lower side plate 6015 is disposed below the lower plate. The upper end of one side of 6012; the lower side plate 6015 and the upper side plate 6014 are disposed on the same side, the middle plate 6013 is disposed between the upper side plate 6014 and the lower side plate 6015, the middle plate 6013 is disposed on the side opposite to the lower side plate 6015 and the upper side plate 6014, an upper connecting plate 6016 is disposed between the upper side plate 6014 and the middle plate 6013, and a lower connecting plate 6017 is disposed between the lower side plate 6015 and the middle plate 6013.

[0055] Specifically, such as Figure 6 As shown, in the wind-suppressing top unit 61, the upper plate 6011 remains unchanged, and the upper side plate 6014, upper connecting plate 6016, middle plate 6013, lower connecting plate 6017 and lower side plate 6015 are tilted towards the side away from the bridge at an angle of α.

[0056] Specifically, such as Figure 4 As shown, in the wind-suppressing middle unit 62 and the wind-suppressing bottom unit 63, the middle plate 6013 is vertically arranged, the upper side plate 6014 is vertically arranged at the lower end of one side of the upper plate 6011, and the lower side plate 6015 is vertically arranged at the upper end of one side of the lower plate 6012.

[0057] Specifically, such as Figure 3 As shown, when installing the wind-suppressing middle unit 62, the upper side plate 6014 and lower side plate 6015 are positioned closer to the bridge, and the middle plate 6013 is positioned further away from the bridge. When installing the wind-suppressing bottom unit 63, the upper side plate 6014 and lower side plate 6015 are positioned further away from the bridge, and the middle plate 6013 is positioned closer to the bridge. The wind-suppressing bottom unit 63 and the wind-suppressing middle unit 62 are adjusted (closer to or further away from the bridge) by the positions of the upper side plate 6014, lower side plate 6015, and middle plate 6013. This ensures that the wind-suppressing plate 601 of the wind-suppressing bottom unit 63 has high structural rigidity while also providing installation space for the pre-embedded bolts 2.

[0058] Specifically, such as Figure 3As shown, when installing the top wind-suppressing unit 61 and the middle wind-suppressing unit 62, the opening of the wind-suppressing plate 601 faces away from the bridge; when installing the bottom wind-suppressing unit 63, the opening of the wind-suppressing plate 601 faces closer to the bridge. This ensures that the wind-suppressing plate 601 of the bottom wind-suppressing unit 63 has high structural rigidity while also providing installation space for the pre-embedded bolts 2.

[0059] Specifically, such as Figure 8 As shown, a second protruding edge 6022 is provided on the same side around the body 6021 of the end plate 602. The second protruding edge 6022 and the body 6021 form a mounting groove 6023. The end of the wind suppressor 601 is detachably installed in the mounting groove 6023.

[0060] The wind suppression unit 6 consists of an independent module composed of a wind suppression plate 601 and an end plate 602. The end of the wind suppression plate 601 can be detachably installed in the mounting groove 6023 of the end plate 602. When damaged, the module can be replaced separately without the need to completely remove the vibration suppression wind barrier, which greatly reduces maintenance costs and improves on-site construction efficiency.

[0061] Specifically, such as Figure 7 As shown, first protruding edges 6018 are provided at the upper and lower ends of the wind suppression plate 601, which can increase the support surface between it and the column 2, reduce deformation, and thus improve rigidity.

[0062] Specifically, such as Figure 8 As shown, clearance grooves 6024 are provided at both the upper and lower ends of the mounting groove 6023. The clearance grooves 6024 are used to avoid the first protruding edge 6018, as shown. Figure 7 As shown, a mounting buckle 6019 is provided on the first protruding edge 6018, such as... Figure 11 As shown, the wind suppression plate 601 is connected to the end plate 602 by the mounting buckle 6019.

[0063] The wind suppression plate 601 is connected to the end plate 602 by the installation buckle 6019, which simplifies the installation process and ensures a stable connection.

[0064] More specifically, the column 5 is detachably connected to the end plate 602, and the module can be replaced individually when damaged, without the need for complete disassembly.

[0065] More specifically, the column 5 and the end plate 602 are detachably connected together by a third connector.

[0066] More specifically, a first mounting hole 6025 is provided on the second protruding edge 6022, which facilitates the passage of the third connector.

[0067] Furthermore, in this embodiment, the third connector is an anti-loosening bolt.

[0068] Each wind suppression unit 6 consists of an independent module composed of a wind suppression plate 601 and an end plate 602. It can be quickly installed by using a mounting clip 6019 and anti-loosening bolts, which greatly improves on-site construction efficiency.

[0069] More specifically, the end plate 602 is an integrally formed structure.

[0070] Specifically, the end plate 602 is made by bending one of aluminum alloy plate, stainless steel plate and thin alloy steel plate. This design allows the end plate 602 to balance strength and corrosion resistance, extend the service life of the vibration damping wind barrier and reduce fatigue damage.

[0071] More specifically, in this embodiment, the end plate 602 is made of bent aluminum alloy plate. This design allows the end plate 602 to balance strength and corrosion resistance, extend the service life of the vibration damping wind barrier, and reduce fatigue damage.

[0072] More specifically, the wind suppression plate 601 is an integrally formed structure.

[0073] More specifically, in this embodiment, the wind suppressor 601 is made of weathering steel by punching and bending. This design allows the wind suppressor 601 to balance strength and corrosion resistance, extend the service life of the vibration damping barrier, and reduce fatigue damage.

[0074] Specifically, such as Figure 10 As shown, the column 5 includes:

[0075] H-beam 50, with slots 501 on its inner side, and both ends of the wind suppression unit 6 are installed in the slots 501 to ensure structural stability.

[0076] The base plate 3 is vertically welded to the bottom of the H-beam 50 and is installed on the base 1 by the pre-embedded bolts 2.

[0077] Specifically, such as Figure 1 and Figure 10 As shown, a reinforcing rib 4 is provided between the H-beam 50 and the base plate 3. One end of the reinforcing rib 4 is connected to the H-beam 50, and the other end is connected to the base plate 3. This arrangement can improve the bending stiffness of the column 5, thereby increasing the structural strength of the vibration damping barrier.

[0078] Specifically, the ventilation hole 603 includes a first through hole 6031 and a second through hole 6032, and the first through hole 6031 and the second through hole 6032 are alternately arranged on the wind suppression unit 6.

[0079] Specifically, the area of ​​the ventilation holes 603 accounts for 20-40% of the total area of ​​the wind suppressor plate 601. While ensuring the air guiding effect, it disrupts the periodic shedding of vortices, reduces the vibration frequency, and avoids vibration suppression failure due to excessively low wind pressure.

[0080] More specifically, in this embodiment, the area of ​​the ventilation hole 603 accounts for 30% of the total area of ​​the wind suppressor 601.

[0081] More specifically, the distance between the first through hole 6031 and the second through hole 6032 is ≥20mm. By optimizing the distance, while ensuring the air guiding effect, the periodic shedding of the vortex is disrupted, the vortex-induced vibration frequency is reduced, and vibration suppression failure is avoided due to excessively low wind pressure.

[0082] More specifically, in this embodiment, the distance between the first through hole 6031 and the second through hole 6032 is 40mm.

[0083] More specifically, a rubber vibration damping pad 8 is provided between the end plate 602 and the H-beam 50. This design has the following advantages: 1. Vibration reduction and noise reduction: Absorbs vibration energy and reduces noise generated by direct metal-to-metal contact. 2. Anti-loosening and anti-corrosion: Prevents bolt loosening and prevents electrochemical corrosion, extending the life of the connectors. 3. Installation compensation: Adapts to machining errors and ensures tight module installation.

[0084] More specifically, such as Figure 1 As shown, a cover plate 502 is installed on the top of the H-beam 50.

[0085] Comparative Example 1

[0086] In this comparative example, unlike Example 1,

[0087] The wind-suppressing plate 601 of the wind-suppressing top unit 61 does not tilt toward the side away from the bridge.

[0088] Comparative Example 2

[0089] In this comparative example, unlike Embodiment 1, the cross-section of each wind deflector 601 is shaped like the letter "1", and each wind deflector 601 is vertically arranged. This is a straight-line wind barrier in the prior art.

[0090] Performance testing

[0091] Vortex-induced vibration wind tunnel tests and force measurement wind tunnel tests were conducted on the vibration-suppressing wind barriers described in Example 1 and Comparative Examples 1-2 to study the influence of the structural shape of the vibration-suppressing wind barriers on the vortex-induced vibration and aerodynamic characteristics of the main beam.

[0092] 1. The main beam cross-section is a railway main beam facing the wind with a wind attack angle of +3°, a wind barrier height of 3m, and a wind permeability of 30%. The influence of the wind barrier structure shape on the vortex-induced vibration of the main beam is studied. The aerodynamic test results of the vehicle-bridge coupled state are characterized by three force coefficients, including drag coefficient CD, lift coefficient CL, and torque coefficient CM. The results are shown in Tables 1 and 2.

[0093] Table 1. Three-component force coefficients of the main beam under different structural forms of wind barriers

[0094]

[0095] Table 2. Three-part force coefficients of the windward vehicle under different structural forms of wind barriers

[0096]

[0097] As shown in Tables 1 and 2, the results of the vortex-induced vibration test and the main beam force test indicate that the vibration-damping wind barrier described in Example 1 exhibits excellent vortex-induced vibration suppression effect, and the aerodynamic performance of the main beam is further improved.

[0098] 2. Based on the calculation model and principle of wind turbine bridge coupled vibration, the dynamic response of the spatial coupled vibration of the wind-vehicle-bridge system when a CRH3 bus passes through a bridge with vibration-damping wind barriers as described in Example 1 and Comparative Examples 1 and 2 is simulated, calculated and analyzed using the full-bridge analysis model of the bridge. The wind speed is 30 m / s and the vehicle speed is 200-250 km / h. The results are shown in Tables 3 and 4.

[0099] Table 3 Calculation results of the maximum vibration displacement of the main beam

[0100]

[0101] Table 4 Calculation results of maximum train response

[0102]

[0103] As can be seen from Table 3, the vibration displacement at the mid-span of the main beam is the smallest when using the vibration damping wind barrier described in Example 1, and the dynamic response at the top of the tower and the top of the pier is the smallest. As can be seen from Table 4, the lateral force on the train is also relatively the smallest when using the vibration damping wind barrier described in Example 1.

[0104] In summary, the vibration-damping wind barrier described in Example 1 can further optimize the aerodynamic performance of the vehicle-bridge system and improve the dynamic response of the spatial coupling vibration of the wind-vehicle-bridge system, demonstrating excellent performance.

[0105] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A vibration-damping wind barrier, characterized in that, The vibration damping wind barrier includes: The column (5) is straight and there are two columns (5). The column (5) includes a first column (51) and a second column (52). A wind suppression unit (6) is disposed between the first column (51) and the second column (52). The wind suppression unit (6) includes a wind suppression top unit (61), at least one wind suppression middle unit (62) and a wind suppression bottom unit (63). Each wind suppression unit (6) includes a wind suppression plate (601) and two end plates (602). The end plates (602) are installed at both ends of the wind suppression plate (601). The wind suppression plate (601) is installed on the column (5) through the end plates (602). A ventilation hole (603) is provided on the wind suppression plate (601). Each of the wind-suppressing plates (601) has an M-shaped or double M-shaped cross section, and the wind-suppressing plates (601) of the wind-suppressing top unit (61) are inclined toward the side away from the bridge.

2. The vibration damping wind barrier according to claim 1, characterized in that, The wind-suppressing plate (601) of the wind-suppressing top unit (61) is tilted at an angle α toward the side away from the bridge, where α is 10 to 20°.

3. The vibration damping wind barrier according to claim 2, characterized in that, The wind-suppressing plate (601) includes an upper plate (6011), an upper side plate (6014), an upper connecting plate (6016), a middle plate (6013), a lower connecting plate (6017), a lower side plate (6015), and a lower plate (6012) connected sequentially from top to bottom. The upper plate (6011) is horizontally positioned above the wind-suppressing plate (601), and the upper side plate (6014) is positioned at the lower end of one side of the upper plate (6011). The lower plate (6012) is horizontally positioned below the upper plate (6011), and the lower side plate (6015) is positioned below the lower plate (6012). The upper end of one side of 012); the lower side plate (6015) and the upper side plate (6014) are disposed on the same side, the middle plate (6013) is disposed between the upper side plate (6014) and the lower side plate (6015), the middle plate (6013) is disposed on the side opposite to the lower side plate (6015) and the upper side plate (6014), an upper connecting plate (6016) is disposed between the upper side plate (6014) and the middle plate (6013), and a lower connecting plate (6017) is disposed between the lower side plate (6015) and the middle plate (6013).

4. The vibration damping wind barrier according to claim 3, characterized in that, In the wind-suppressing top unit (61), the upper side plate (6014), upper connecting plate (6016), middle plate (6013), lower connecting plate (6017) and lower side plate (6015) are tilted at an angle α toward the side away from the bridge.

5. A vibration-damping wind barrier according to claim 3, characterized in that, In the wind-suppressing middle unit (62) and the wind-suppressing bottom unit (63), the middle plate (6013) is vertically arranged; the upper side plate (6014) is vertically arranged at the lower end of one side of the upper plate (6011); and the lower side plate (6015) is vertically arranged at the upper end of one side of the lower plate (6012).

6. A vibration-damping wind barrier according to claim 3, characterized in that, When installing the wind-suppressing top unit (61) and the wind-suppressing middle unit (62), the opening of the wind-suppressing plate (601) faces away from the bridge; when installing the wind-suppressing bottom unit (63), the opening of the wind-suppressing plate (601) faces closer to the bridge.

7. The vibration damping wind barrier according to claim 1, characterized in that, A second protruding edge (6022) is provided on the same side around the body (6021) of the end plate (602), and the second protruding edge (6022) and the body (6021) form a mounting groove (6023), and the end of the wind suppressor (601) is installed in the mounting groove (6023).

8. A vibration-damping wind barrier according to claim 7, characterized in that, A clearance groove (6024) is provided at the upper and lower ends of the mounting groove (6023), and a first protruding edge (6018) is provided at the upper and lower ends of the wind suppressor (601). The clearance groove (6024) is used to avoid the first protruding edge (6018). A mounting buckle (6019) is provided on the first protruding edge (6018), and the wind suppressor (601) is engaged with the end plate (602) through the mounting buckle (6019).

9. A vibration-damping wind barrier according to claim 1, characterized in that, The lower end of the column (5) is installed on the base (1) by pre-embedded bolts (2).

10. A vibration-damping wind barrier according to claim 1, characterized in that, The ventilation hole (603) includes a first through hole (6031) and a second through hole (6032), and the first through hole (6031) and the second through hole (6032) are alternately arranged on the wind suppressor plate (601).

Images