A track beam based noise reduction device and method

Abstract

The application discloses a kind of based on track beam's noise reduction device and method, it is suitable for rail transit technical field.Track plate is located above longitudinal pier, and connect track plate and longitudinal pier by trapezoidal support, longitudinal pier is connected with lower bearing beam;Noise reduction component is located at longitudinal pier, and it is arranged along the longitudinal direction of longitudinal pier, and the arrangement position of noise reduction component in longitudinal pier is determined based on train line design speed rule.In the structure of track beam, compared with the existing noise reduction measures in tunnel lining or train compartment in tunnel, the noise along the track outside the tunnel is reduced, and the noise impact of train on the environment along the line is reduced.When the train passes through the noise reduction device, a closed space is formed between the longitudinal pier and the track plate, the noise reduction component is arranged on the longitudinal pier, the air wave generated by the train is absorbed, the air energy is reflected and dissipated through the closed space, the aerodynamic noise is reduced to achieve the purpose of noise reduction, and the noise reduction effect is improved.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a noise reduction device and method based on a track beam. Background Technology

[0002] While the development of high-speed maglev transportation technology has greatly shortened travel time, the high operating speed inevitably causes significant noise to the surrounding environment. This noise affects passengers inside the train and the environment along the line, and there is an urgent need for effective noise reduction measures to reduce the noise impact of high-speed maglev trains on the surrounding environment.

[0003] Existing noise reduction measures work inside the tunnel lining or train carriages, but they cannot reduce noise along the track outside the tunnel, resulting in poor noise reduction effect.

[0004] Therefore, improving noise reduction capabilities is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a noise reduction device and method based on track beams to solve the problem that existing noise reduction measures have a negative impact on the noise environment along the track, resulting in poor noise reduction effect.

[0006] To solve the above-mentioned technical problems, the present invention provides a noise reduction device based on a track beam, the noise reduction device comprising a lower load-bearing beam 1, a trapezoidal support 4, a longitudinal support 5, a noise reduction component 2, and a track slab 3;

[0007] The track slab 3 is located above the longitudinal support 5, and the track slab 3 and the longitudinal support 5 are connected by the trapezoidal support 4. The longitudinal support 5 is connected to the lower load-bearing beam 1.

[0008] The noise reduction component 2 is located at the longitudinal support 5 and is arranged along the longitudinal direction of the longitudinal support 5. The arrangement position of the noise reduction component 2 on the longitudinal support 5 is determined based on the train line design speed rules.

[0009] Preferably, the longitudinal support 5 includes two support side plates 6 and a crossbeam 7;

[0010] The crossbeam 7 is located between the two support side plates 6, and the crossbeam 7 is perpendicularly connected to the two support side plates 6.

[0011] The noise reduction component 2 extends to the flange surface of the lower load-bearing beam 1 and penetrates laterally through the two support side plates 6, and the noise reduction component 2 is symmetrically distributed at the two support side plates 6.

[0012] Preferably, the noise reduction component 2 is an exhaust port, and the exhaust ports symmetrically distributed at the two support side plates 6 have the same specifications.

[0013] Preferably, the crossbeam 7 is located between adjacent noise reduction components 2 within each of the support side plates 6 and is perpendicular to the support side plates 6, and the crossbeam 7 is equally spaced between the two support side plates 6.

[0014] Preferably, it further includes a first mounting hole 8;

[0015] The first mounting hole 8 passes through the trapezoidal support 4 and the track plate 3, and is symmetrically arranged with the vertical central axis of the track plate 3 as the axis of symmetry;

[0016] The track slab 3 is connected to the longitudinal support 5 through the first mounting hole 8.

[0017] Preferably, it also includes a second mounting hole and a bolt;

[0018] The second mounting hole extends from the side plate 6 of the support to the top of the noise reduction component 2;

[0019] The centers of the first mounting hole 8 and the second mounting hole are aligned, and the bolt is located in the second mounting hole to connect the track plate 3 and the longitudinal support 5.

[0020] Preferably, the height of the noise reduction component 2 is less than the height of the two support side plates 6, and the noise reduction components 2 symmetrically distributed at the two support side plates 6 have the same height.

[0021] Preferably, it also includes a sliding-guiding integrated structure 10 and multiple embedded parts 9;

[0022] Multiple embedded parts 9 are symmetrically embedded on both sides of the track slab 3 and are parallel to the track slab 3;

[0023] The sliding-guiding integrated structure 10 is connected to the track plate 3 through the embedded part 9.

[0024] Preferably, the track on the lower load-bearing beam 1 is a single-line track or a multi-line track.

[0025] Preferably, the lower load-bearing beam 1 is a box beam, and the flange is a wide flange.

[0026] To address the aforementioned technical problems, this invention also provides a noise reduction method based on a track beam, applied to a noise reduction device based on a track beam. The noise reduction device includes a lower load-bearing beam, longitudinal supports, noise reduction components, and a track slab. The track slab is located above the longitudinal supports and is connected to the longitudinal supports via trapezoidal supports. The longitudinal supports are connected to the lower load-bearing beam. The noise reduction components are located at the longitudinal supports and are arranged along the longitudinal direction of the longitudinal supports. The method includes:

[0027] Obtain the design speed rules for train lines;

[0028] The noise reduction components are installed at the longitudinal support piers according to the train line design speed rules.

[0029] Noise reduction is performed based on the noise reduction components after they are deployed.

[0030] Preferably, the process of establishing the train line design speed rules includes:

[0031] Obtain the train track design speed based on the track beam;

[0032] Determine whether the designed speed of the train line is greater than the preset reference speed;

[0033] If the diameter is greater than the diameter, the noise reduction component is disposed at the end and middle of each of the longitudinal supports, and the aperture of the noise reduction component at the end of each of the longitudinal supports is greater than the aperture of the noise reduction component at the middle of each of the longitudinal supports.

[0034] If it is less than or equal to, then the noise reduction component is disposed at the end of each of the longitudinal supports.

[0035] This invention provides a noise reduction device based on a track beam. The track slab is located above longitudinal supports and connected to the longitudinal supports via trapezoidal supports. The longitudinal supports are connected to a lower load-bearing beam. Noise reduction components are located at the longitudinal supports and arranged along their longitudinal direction. The arrangement of the noise reduction components on the longitudinal supports is determined based on the train line design speed rules. This device incorporates noise reduction components within the track beam structure, achieving noise reduction along the track outside the tunnel compared to existing noise reduction measures implemented in tunnel linings or train carriages, thus reducing the noise impact of trains on the surrounding environment. When a train passes through this noise reduction device, a closed space is formed between the longitudinal supports and the track slab. The arrangement of the noise reduction components on the longitudinal supports absorbs air waves emitted by the passing train and dissipates air energy through reflection within the closed space, reducing aerodynamic noise and achieving the goal of noise reduction, thereby improving the noise reduction effect.

[0036] In addition, the present invention also provides a noise reduction method based on track beams, which has the same beneficial effects as the noise reduction device based on track beams described above. Attached Figure Description

[0037] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A structural diagram of a noise reduction device based on a track beam provided in an embodiment of the present invention;

[0039] Figure 2 A cross-sectional schematic diagram of a noise reduction device based on a track beam provided in an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of a noise reduction component provided in an embodiment of the present invention;

[0041] Figure 4 A schematic diagram of a longitudinal support pier provided in an embodiment of the present invention;

[0042] Figure 5 A schematic diagram of a track slab structure provided in an embodiment of the present invention;

[0043] Figure 6 A perspective view of a track slab structure provided in an embodiment of the present invention;

[0044] Figure 7 A flowchart of a noise reduction method based on a track beam provided in an embodiment of the present invention.

[0045] Among them, 1 is the lower load-bearing beam, 2 is the noise reduction component, 3 is the track plate, 4 is the trapezoidal support, 5 is the longitudinal support, 6 is the support side plate, 7 is the crossbeam, 8 is the first mounting hole, 9 is the embedded part, and 10 is the sliding-guiding integrated structure. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present invention.

[0047] The core of this invention is to provide a noise reduction device and method based on track beams, in order to solve the problem that existing noise reduction measures have a negative impact on the noise environment along the track, resulting in poor noise reduction effect.

[0048] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] It should be noted that due to the characteristics of high-speed maglev train track beams, measures such as installing sound barriers and damping rails are difficult to implement. Existing high-speed maglev track systems on slab-type beams rely on longitudinal supports forming a large enclosed space with the track slab, or multiple continuous enclosed spaces between the longitudinal supports and the track slab. However, regardless of the type of enclosed space, it is impossible to improve the noise impact on the train track environment. The noise reduction device based on the track beam provided by this invention can solve the above-mentioned technical problems.

[0050] Figure 1 A structural diagram of a noise reduction device based on a track beam provided in an embodiment of the present invention is shown below. Figure 1 As shown, the noise reduction device includes a lower load-bearing beam 1, a trapezoidal support 4, a longitudinal support 5, a noise reduction component 2, and a track slab 3;

[0051] The track slab 3 is located above the longitudinal support 5 and is connected to the longitudinal support 5 by a trapezoidal support 4. The longitudinal support 5 is connected to the lower load-bearing beam 1.

[0052] The noise reduction component 2 is located at the longitudinal support 5 and is arranged along the longitudinal direction of the longitudinal support 5. The arrangement position of the noise reduction component 2 at the longitudinal support 5 is determined based on the train track design speed rules.

[0053] Specifically, the track beam can be a beam-type track structure on a high-speed maglev bridge, or a similar track beam used in superconducting maglev or low-speed maglev, depending on the specific scenario. The track slab is a concrete track slab, located above the longitudinal supports, and the two are connected by trapezoidal supports. Figure 2 This is a cross-sectional schematic diagram of a noise reduction device based on a track beam provided in an embodiment of the present invention, as shown below. Figure 2 As shown, there are two parallel trapezoidal supports 4 on the bottom surface of the track slab 3, and the longitudinal support 5 is connected to the lower load-bearing beam 1 in a perpendicular manner. The trapezoidal supports 4 are connected to the longitudinal support 5 by means of connectors or cast-in-place methods. The longitudinal support 5 is connected to the horizontal flange of the lower load-bearing beam 1 by means of assembly connection or cast-in-place method.

[0054] The noise reduction components are located at the longitudinal supports. The specific shape of the components is not limited; they can be rectangular, square, or circular, etc., depending on the actual project requirements. The noise reduction components are arranged longitudinally along the longitudinal supports, and their placement is determined based on the train track design speed rules. Design speed generally refers to the maximum speed allowed by track conditions and is one of the most important technical standards for railways, as well as a significant indicator of railway technology, equipment, standards, and operational management levels. The number and location of the noise reduction components at the longitudinal supports are determined based on the train track design speed rules.

[0055] This invention provides a noise reduction device based on a track beam. The track slab is located above longitudinal supports and connected to the longitudinal supports via trapezoidal supports. The longitudinal supports are connected to a lower load-bearing beam. Noise reduction components are located at the longitudinal supports and arranged along their longitudinal direction. The arrangement of the noise reduction components on the longitudinal supports is determined based on the train line design speed rules. This device incorporates noise reduction components within the track beam structure, achieving noise reduction along the track outside the tunnel compared to existing noise reduction measures implemented in tunnel linings or train carriages, thus reducing the noise impact of trains on the surrounding environment. When a train passes over the noise reduction device, a closed space is formed between the longitudinal supports and the track slab. The arrangement of the noise reduction components on the longitudinal supports absorbs air waves emitted by the passing train and dissipates air energy through reflection within the closed space, reducing aerodynamic noise and achieving the goal of noise reduction, thereby improving the noise reduction effect.

[0056] Based on the above embodiments, as one example, the longitudinal support includes two support side plates and a crossbeam;

[0057] The crossbeam is located between the two pier side plates and is perpendicularly connected to the two pier side plates;

[0058] The noise reduction components extend to the flange surface of the lower load-bearing beam and penetrate laterally through the side plates of the two piers, and the noise reduction components are symmetrically distributed at the side plates of the two piers.

[0059] Specifically, the longitudinal supports are reinforced concrete structures, including two support side plates and crossbeams, such as... Figure 2 As shown, the crossbeam is located between the two pier side plates and is perpendicularly connected to the two pier side plates. The longitudinal pier 5 is cast-in-place or assembled on the lower load-bearing beam 1. The longitudinal pier 5 mainly bears the load transmitted by the train and the concrete track slab, and transmits it to the lower load-bearing beam 1. Figure 3 This is a schematic diagram of a noise reduction component provided in an embodiment of the present invention, as shown below. Figure 3As shown, the noise reduction component 2 extends to the flange surface of the lower load-bearing beam 1 and transversely penetrates the two support side plates 6, and the noise reduction component 2 is symmetrically distributed at the two support side plates 6. That is to say, the noise reduction component transversely penetrates the two support side plates because, based on the installation position of the beam, there are noise reduction components on both support side plates, which are transversely penetrated and symmetrically distributed.

[0060] The crossbeams of the longitudinal supports are cast in one piece with the side plates, connecting the side plates of the supports on both sides of the track slab, providing lateral support for the supports, which helps to improve the lateral and torsional stiffness of the high-speed maglev track structure.

[0061] As one embodiment, the crossbeam is located between adjacent noise reduction components within the side plates of each pier and is perpendicular to the side plates of the pier, and the crossbeam is evenly spaced between the two side plates of the pier.

[0062] Figure 4 A schematic diagram of a longitudinal support pier is provided for an embodiment of the present invention, as shown below. Figure 4 As shown, the crossbeam 7 is located between adjacent noise reduction components 2 within the side plates 6 of the two supports. The number of crossbeams 7 can be set according to the actual situation. If there are multiple crossbeams 7, they can be set at equal intervals to facilitate calculation and laying.

[0063] As one embodiment, the noise reduction component is an exhaust port, and the exhaust ports symmetrically distributed on the side plates of the two supports have the same specifications.

[0064] Specifically, in addition to noise reduction, the vents can also drain water. They are formed in-situ during formwork casting or assembled in a factory, with noise reduction as their primary purpose. The vents symmetrically distributed on the side plates of the two supports have the same specifications; in this embodiment, the vent diameter and shape are identical.

[0065] Based on the above embodiments, a first mounting hole is also included;

[0066] The first mounting hole penetrates the trapezoidal support and the track plate, and is symmetrically arranged with the vertical central axis of the track plate as the axis of symmetry;

[0067] The track slab is connected to the longitudinal support through the first mounting hole.

[0068] Specifically, the first mounting hole penetrates through the trapezoidal support and the track plate. Figure 5 A schematic diagram of a track slab structure provided in an embodiment of the present invention is shown below. Figure 5 As shown, the first mounting hole 8 is set with the vertical central axis of the track plate 3 as the axis of symmetry. The opening of the first mounting hole 8 is above the two trapezoidal supports 4 and extends through the track plate 3. Figure 6 A perspective view of a track slab structure provided in an embodiment of the present invention, such as... Figure 6 As shown, the first mounting hole connects the track plate and the longitudinal support through a through structure.

[0069] It should be noted that in this embodiment, the mounting holes are used for positioning and adjustment. The number of the first mounting holes is not limited, as long as they are installed through the trapezoidal support and the track plate.

[0070] As one embodiment, it also includes a second mounting hole and a bolt;

[0071] The second mounting hole extends from the side plate of the support to the top of the noise reduction component;

[0072] The centers of the first and second mounting holes are aligned, and the bolts are located inside the second mounting hole to connect the track plate and the longitudinal support.

[0073] It should be noted that the diameters of the second mounting hole and the first mounting hole can be the same or different, as long as they are symmetrical. The second mounting hole extends through the side plate of the support pier to the top of the noise reduction component, and is then fixed in the second mounting hole with bolts, thus connecting the track slab and the longitudinal support pier. The track slab is a prestressed concrete structure, and its positioning and bolt connection with the lower support pier are achieved through mounting holes penetrating the trapezoidal support, thereby reducing the noise transmitted downwards from the upper maglev vehicle and structure. The track slab bears the load transmitted by the high-speed maglev train during operation.

[0074] In this embodiment, the setting of the first mounting hole and the second mounting hole facilitates positioning and adjustment. The bolt is located in the second mounting hole to connect the track plate and the longitudinal support, so that the track plate and the longitudinal support are fastened together.

[0075] As one embodiment, the height of the noise reduction component is less than the height of the two support side plates, and the noise reduction components symmetrically distributed at the two support side plates have the same height.

[0076] The height of the noise reduction component is based on the distance from the reserved position near the top of the pier side plate to the flange surface of the lower load-bearing beam. Since the noise reduction component does not divide the pier side plate, considering the fixing of the mounting holes, its height is less than the height of the two pier side plates. A height difference between the noise reduction component and the pier side plate is reserved for setting the mounting holes. The aerodynamic noise generated by the train needs to be absorbed and reduced by the noise reduction component. The noise reduction components, symmetrically distributed at the two pier side plates, have the same height so that the noise energy absorbed and reduced at the same location is approximately the same.

[0077] Based on the above embodiments, it also includes a sliding-guiding integrated structure and multiple embedded parts;

[0078] Multiple embedded parts are symmetrically embedded on both sides of the track slab and are parallel to the track slab;

[0079] The sliding-guiding integrated structure is connected to the track slab through embedded parts.

[0080] like Figure 6As shown, multiple embedded parts 9 are pre-embedded on both sides of the track slab 3, parallel to the track slab 3. When the track beam is a high-speed maglev track beam, the sliding-guiding integrated structure 10 and the track slab 3 are connected through the embedded parts 9 to realize the installation connection between the track slab 3 and the sliding-guiding integrated structure 10.

[0081] As one embodiment, the track on the lower load-bearing beam is a single-line track or a multi-line track.

[0082] In this embodiment, no specific requirements are made for single-line or multi-line tracks; they can be set according to the actual situation. This embodiment is only used to apply the corresponding track beams.

[0083] As one example, the lower load-bearing beam is a box beam with wide flanges.

[0084] Specifically, the lower load-bearing beam is a box girder with wide flanges and a horizontal surface to facilitate personnel evacuation. The lower part of the load-bearing beam is a box body with a hollow center, which can accommodate a partition to reduce the structure's weight. The upper top plate of the box body extends outward to form flanges with a horizontal upper surface, which can be used to install sound barriers and escape and rescue passages to meet environmental noise and safety requirements. In emergencies and when necessary, it can also be used for pedestrian access for personnel evacuation.

[0085] Figure 7 A flowchart of a noise reduction method based on a track beam provided in an embodiment of the present invention is shown below. Figure 7 As shown, this method is applied to a noise reduction device based on a track beam. The noise reduction device includes a lower load-bearing beam, longitudinal supports, noise reduction components, and a track slab. The track slab is located above the longitudinal supports and is connected to the longitudinal supports via trapezoidal supports. The longitudinal supports are connected to the lower load-bearing beam. The noise reduction components are located at the longitudinal supports and are arranged along the longitudinal direction of the longitudinal supports. The method includes:

[0086] S11: Obtain the train line design speed rules;

[0087] S12: Noise reduction components are installed at longitudinal supports according to the train line design speed rules;

[0088] S13: Perform noise reduction based on the deployed noise reduction components.

[0089] Specifically, the design speed rules for train lines are based on the settings of each line, taking into account the aerodynamic noise generated by the train's operating speed. The corresponding noise reduction components play a certain role in sound absorption and noise reduction. They absorb the air waves of the passing train and dissipate air energy through reflection within the internal cavity of the structure, thereby reducing aerodynamic noise. They also have auxiliary functions such as installation and drainage. Multiple noise reduction components can be installed at the longitudinal supports according to the sound absorption and noise reduction requirements.

[0090] As one example, the process of establishing train line design speed rules includes:

[0091] Obtain the design speed of the train line based on the track beam;

[0092] Determine whether the designed speed of the train line is greater than the preset reference speed;

[0093] If the diameter is greater than the diameter, the noise reduction components are placed at the ends and middle of each longitudinal support, and the aperture of the noise reduction components at the ends of each longitudinal support is greater than the aperture of the noise reduction components at the middle of each longitudinal support.

[0094] If the noise reduction component is less than or equal to the noise reduction component, the noise reduction component shall be placed at the end of each longitudinal support.

[0095] Specifically, if the design speed of the train line is greater than the preset benchmark speed, it indicates that the current air waves are larger, requiring the addition of more noise reduction components. These noise reduction components are then installed at the ends and middle of each longitudinal support. The end noise reduction components serve to absorb sound, assist in installation, and provide drainage. The middle noise reduction components primarily absorb sound, and the aperture of the end noise reduction components is larger than that of the noise reduction components in the middle of each longitudinal support.

[0096] If the design speed of the train line is less than or equal to the preset reference speed, the noise reduction components will be installed at the ends of each longitudinal support.

[0097] The two noise reduction component distribution strategies provided in this embodiment take into account the actual design speed of the train line and set the corresponding number of noise reduction components to achieve maximum noise reduction.

[0098] The noise reduction device and method based on a track beam provided by the present invention have been described in detail above. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0099] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A noise reduction device based on a track beam, characterized in that, The noise reduction device includes a lower load-bearing beam (1), a trapezoidal support (4), a longitudinal support (5), a noise reduction component (2), and a track slab (3). The track slab (3) is located above the longitudinal support (5) and is connected to the longitudinal support (5) by the trapezoidal support (4). The longitudinal support (5) is connected to the lower load-bearing beam (1). The noise reduction component (2) is located at the longitudinal support (5) and is arranged along the longitudinal direction of the longitudinal support (5). The arrangement position of the noise reduction component (2) on the longitudinal support (5) is determined based on the train line design speed rules. Correspondingly, the longitudinal support (5) includes two support side plates (6) and a crossbeam (7); The crossbeam (7) is located between the two support side plates (6), and the crossbeam (7) is perpendicularly connected to the two support side plates (6); The noise reduction component (2) extends to the flange surface of the lower load-bearing beam (1) and transversely penetrates the two support side plates (6), and the noise reduction component (2) is symmetrically distributed at the two support side plates (6). Correspondingly, the noise reduction component (2) is an exhaust hole, and the exhaust holes symmetrically distributed at the two support side plates (6) have the same specifications; Correspondingly, the height of the noise reduction component (2) is less than the height of the two support side plates (6), and the noise reduction components (2) symmetrically distributed at the two support side plates (6) have the same height; wherein, the height of the noise reduction component is based on the height from the reserved position near the top of the support side plate to the flange surface of the lower load-bearing beam.

2. The noise reduction device based on a track beam according to claim 1, characterized in that, The crossbeam (7) is located between adjacent noise reduction components (2) within each of the support side plates (6) and is perpendicular to the support side plates (6), and the crossbeam (7) is equally spaced between the two support side plates (6).

3. The noise reduction device based on a track beam according to claim 1, characterized in that, It also includes the first mounting hole (8); The first mounting hole (8) passes through the trapezoidal support (4) and the track plate (3), and is symmetrically arranged with the vertical central axis of the track plate (3) as the axis of symmetry; The track slab (3) is connected to the longitudinal support (5) through the first mounting hole (8).

4. The noise reduction device based on a track beam according to claim 3, characterized in that, It also includes a second mounting hole and bolts; The second mounting hole extends from the side plate (6) of the support to the top of the noise reduction component (2); The centers of the first mounting hole (8) and the second mounting hole are aligned, and the bolt is located in the second mounting hole to connect the track plate (3) and the longitudinal support (5).

5. The noise reduction device based on a track beam according to claim 1, characterized in that, It also includes a sliding-guiding integrated structure (10) and multiple embedded parts (9); Multiple embedded parts (9) are symmetrically embedded on both sides of the track plate (3) and parallel to the track plate (3); The sliding-guiding integrated structure (10) is connected to the track plate (3) through the embedded part (9).

6. The noise reduction device based on a track beam according to claim 5, characterized in that, The track on the lower load-bearing beam (1) is a single-line track or a multi-line track.

7. The noise reduction device based on a track beam according to claim 1, characterized in that, The lower load-bearing beam (1) is a box beam, and the flange is a wide flange.

8. A noise reduction method based on a track beam, characterized in that, The method, applied to the noise reduction device based on a track beam as described in any one of claims 1 to 7, comprises: Obtain the design speed rules for train lines; The noise reduction components are installed at the longitudinal support piers according to the train line design speed rules. Noise reduction is performed based on the noise reduction components after they are deployed.

9. The noise reduction method based on track beams according to claim 8, characterized in that, The process of establishing the train line design speed rules includes: Obtain the train track design speed based on the track beam; Determine whether the designed speed of the train line is greater than the preset reference speed; If the diameter is greater than the diameter, the noise reduction component is disposed at the end and middle of each of the longitudinal supports, and the aperture of the noise reduction component at the end of each of the longitudinal supports is greater than the aperture of the noise reduction component at the middle of each of the longitudinal supports. If it is less than or equal to, then the noise reduction component is disposed at the end of each of the longitudinal supports.

Images