Sound absorption and noise reduction device in high-speed railway tunnel and construction method of sound absorption and noise reduction device

Abstract

The invention discloses a sound absorption and noise reduction device in a high-speed railway tunnel and a construction method of the sound absorption and noise reduction device. The sound absorption and noise reduction device comprises cross beams, clamping rods and sound absorption plates which are all arranged in the railway tunnel, and the cross beams are fixed to the inner wall of the railway tunnel; the clamping rod is fixed with the cross beam, and two clamping grooves which are oppositely arranged are formed in the clamping rod; a plurality of sound absorption plates are arranged between every two adjacent clamping rods, the upper side edge and the lower side edge of each sound absorption plate are limited in two clamping grooves adjacently formed in the circumferential direction of the inner wall of the railway tunnel correspondingly, and the ends of the multiple sound absorption plates abut against each other in the extending direction of the railway tunnel in sequence. According to the railway tunnel, the sound-absorbing plate is installed in the railway tunnel, and the sound-absorbing plate can absorb and buffer noise generated when a high-speed train passes by; by designing the cross beams, the clamping rods are fixed to the inner wall of the railway tunnel; the clamping rods are designed, so that the sound-absorbing plate can be quickly and reliably fixed; the installation efficiency of the acoustic panel is high, and the construction cost and the material cost are both low.

Description

Technical Field

[0001] The present invention relates to the field of railway tunnels, and more particularly to a sound absorbing and noise reducing device in a high-speed railway tunnel and a construction method thereof. Background Art

[0002] As the speed of trains increases, the existing noise reduction measures in railway tunnels can no longer meet the new noise reduction requirements. When a high-speed train enters a railway tunnel, the violent airflow disturbance in front of the train will generate a lot of noise. This sound wave will have an adverse effect on both the railway tunnel and the train.

[0003] Existing railway tunnels mainly set up buffer openings at the entrances and exits or arrange buffer chambers at equal intervals inside the tunnel to achieve the effect of noise reduction. However, with the significant increase in train running speed, the above measures can no longer meet the noise reduction needs.

[0004] Therefore, how to provide a sound-absorbing and noise-reducing device in a high-speed railway tunnel and a construction method thereof so as to overcome the above-mentioned problems is an issue that needs to be urgently solved by those skilled in the art. Summary of the invention

[0005] In view of this, the present invention provides a sound absorbing and noise reducing device in a high-speed railway tunnel.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A sound absorption and noise reduction device in a high-speed railway tunnel comprises a crossbeam, a clamping rod and a sound absorbing panel, all of which are arranged in the railway tunnel, the crossbeam is fixed to the inner wall of the railway tunnel, the length direction of the crossbeam is consistent with the extension direction of the railway tunnel, a plurality of crossbeams are provided and are arranged in sequence along the circumference of the inner wall of the railway tunnel; a plurality of clamping rods are provided and each is fixed to a plurality of crossbeams, the rod length direction of the clamping rods is consistent with the length direction of the crossbeams, the clamping rods are provided with two clamping grooves arranged opposite to each other, the rod center line of the clamping rods is centrally arranged between the two clamping grooves, the groove length direction of the clamping grooves is consistent with the rod length direction of the clamping rods; a plurality of sound absorbing panels are arranged between every two adjacent clamping rods, the upper side and the lower side of the sound absorbing panel are respectively limited in the two clamping grooves arranged adjacent to each other along the circumference of the inner wall of the railway tunnel, and the ends of the plurality of sound absorbing panels are pressed against each other in sequence along the extension direction of the railway tunnel.

[0008] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a sound absorbing and noise reduction device in a high-speed railway tunnel. The present application installs a sound absorbing panel in the railway tunnel. When a high-speed train passes through the railway tunnel, the sound absorbing panel will absorb and buffer the noise generated by the high-speed train passing through, that is, the sound waves in the railway tunnel will penetrate into the interior of the sound absorbing panel and propagate in the pores. The sound waves will be gradually consumed in the process of propagation in the pores, thereby achieving the effect of sound absorption and noise reduction; the present application designs a crossbeam to achieve the fixation of the clamping rod and the inner wall of the railway tunnel; by designing the clamping rod, the sound absorbing panel can be quickly and reliably fixed; because the sound absorbing panel is installed and fixed only by the crossbeam and the clamping rod, the installation efficiency of the sound absorbing panel is high, and both the construction cost and the material cost are relatively low, and the fixing method of the sound absorbing panel is simple and reliable.

[0009] Preferably, the sound absorbing panels are installed on both sides of the track in the railway tunnel, and the number of the sound absorbing panels on both sides of the track in the railway tunnel is the same and the positions are opposite. This design can improve the absorption and buffering effect of noise in the railway tunnel.

[0010] Preferably, the length of the crossbeam is the same as that of the clamping rod, the crossbeam is aligned with the ends of the clamping rod, and the shortest distance between the uppermost clamping rod and the ground in the railway tunnel is 2-3 meters. This design can limit the installation height of the sound-absorbing panel, ensuring that the sound-absorbing panel can absorb the noise in the railway tunnel to the greatest extent, and at the same time, ensure the driving safety in the railway tunnel while ensuring the noise reduction effect.

[0011] Preferably, the clamping rod comprises a connecting plate 1, a connecting plate 2 and a connecting plate 3, the length direction of the connecting plate 1, the connecting plate 2 and the connecting plate 3 are all the same as the length direction of the cross beam, the connecting plate 1 is fixed to the cross beam, the connecting plate 2 is fixed to the connecting plate 1, the plate surface of the connecting plate 2 is perpendicular to the plate surface of the connecting plate 1, and the connecting plate 1 is centrally arranged between the two long sides of the connecting plate 2; the plate surface of the connecting plate 3 is parallel to the plate surface of the connecting plate 2, a long side wall of the connecting plate 1 away from the cross beam is detachably fixed to a side plate surface of the connecting plate 3, and the connecting plate 1 is centrally arranged between the two long sides of the connecting plate 3; the connecting plate 1, the connecting plate 2 and the connecting plate 3 jointly define two clamping grooves, and the center line of the connecting plate 1 in the length direction is centrally arranged between the two clamping grooves. The connecting plate 1, the connecting plate 2 and the connecting plate 3 can jointly define two clamping grooves, and the connecting plate 1 can be reliably fixed to the cross beam.

[0012] Preferably, a threaded hole is formed on a long side wall of the first connecting plate away from the cross beam, and a through hole is formed on the plate surface of the third connecting plate, and one end of the bolt is screwed into the threaded hole after passing through the through hole, and the bolt cap of the bolt and the long side wall of the first connecting plate jointly clamp the third connecting plate. The first connecting plate and the third connecting plate can be detachably fixed.

[0013] Preferably, two limiting grooves are integrally formed on the plate surface of one side of the connecting plate three close to the connecting plate two, the limiting grooves penetrate the two end walls of the connecting plate three, the connecting plate one is arranged centrally between the two limiting grooves, an elastic strip is clamped in each limiting groove, the length direction of the elastic strip is the same as the groove length direction of the limiting groove, and the plate surface of one side of the sound absorbing board close to the connecting plate three can abut against the elastic strip. The elastic strip can protect the sound absorbing board, avoid hard collision or friction between the sound absorbing board and the connecting plate three, and prevent damage to the sound absorbing board.

[0014] A construction method of a sound absorption and noise reduction device in a high-speed railway tunnel, using the above-mentioned sound absorption and noise reduction device in a high-speed railway tunnel, the method is as follows:

[0015] The first step is to mark the inner wall of the railway tunnel to mark the installation position of the crossbeam, and then fix the crossbeam on the inner wall of the railway tunnel;

[0016] In the second step, the clamping rod and the sound absorbing board are installed in sequence from bottom to top, the clamping rod is fixed to the cross beam, and the upper side and the lower side of the sound absorbing board are respectively limited in two clamping grooves arranged adjacent to each other along the circumference of the inner wall of the railway tunnel.

[0017] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a construction method for a sound absorbing and noise reducing device in a high-speed railway tunnel. The construction method is very simple, and the installation efficiency and installation accuracy of the sound absorbing panel are relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 This is an axonometric diagram of a sound-absorbing and noise-reducing device in a high-speed railway tunnel;

[0020] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0021] Figure 3 This is a front view of a sound absorption and noise reduction device in a high-speed railway tunnel;

[0022] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0023] Figure 5 yes Figure 4 A partial enlarged view of point C in the middle;

[0024] Figure 6 The present invention is a flow chart of a construction method of a sound absorbing and noise reducing device in a high-speed railway tunnel.

[0025] In the figure:

[0026] 1 is a railway tunnel, 2 is a cross beam, 3 is a clamping rod, 30 is a connecting plate 1, 31 is a connecting plate 2, 32 is a connecting plate 3, 4 is a sound absorbing plate, 5 is a bolt, and 6 is an elastic strip. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The present invention discloses a sound absorption and noise reduction device in a high-speed railway tunnel and a construction method thereof. In the present application, a sound absorption panel 4 is installed in a railway tunnel 1. When a high-speed train passes through the railway tunnel 1, the sound absorption panel 4 absorbs and buffers the noise generated by the high-speed train passing through. That is, the sound waves in the railway tunnel 1 penetrate into the sound absorption panel 4 and propagate in the pores. The sound waves are gradually consumed in the process of propagating in the pores, thereby achieving the effect of sound absorption and noise reduction.

[0029] The present application realizes the fixing of the clamping rod 3 and the inner wall of the railway tunnel 1 by designing the crossbeam 2; the design of the clamping rod 3 can realize the rapid and reliable fixing of the sound absorbing panel 4; the sound absorbing panel 4 is located in the railway tunnel 1, and since the train runs at a high speed in the railway tunnel 1, the structural design of the crossbeam 2 and the clamping rod 3 can ensure that the sound absorbing panel 4 will not fall off, thereby ensuring the driving safety in the railway tunnel 1;

[0030] In addition, since the sound absorbing panel 4 is installed and fixed only by using the cross beam 2 and the clamping rod 3, the installation efficiency of the sound absorbing panel 4 is high, and both the construction cost and the material cost are relatively low, and the fixing method of the sound absorbing panel 4 is simple and reliable;

[0031] The clamping rod 3 in the present application includes a connecting plate 1 30, a connecting plate 2 31 and a connecting plate 3 32. The connecting plate 1 30, the connecting plate 2 31 and the connecting plate 3 32 can form two clamping grooves together. The connecting plate 1 30, the connecting plate 2 31 and the connecting plate 3 32 have simple structures and can reliably limit the sound absorbing board 4.

[0032] The connecting plate 1 30 and the connecting plate 3 32 are detachably fixed. When partially disassembling and replacing the installed sound-absorbing panels 4, the connecting plate 3 32 corresponding to the sound-absorbing panels 4 to be disassembled can be removed from the connecting plate 1 30, without disassembling and installing all the sound-absorbing panels 4.

[0033] By designing the limiting groove and the elastic strip 6, no hard impact will occur between the sound absorbing board 4 and the connecting plate 3 32, and the sound absorbing board 4 will not be broken;

[0034] The construction method of the sound absorbing panel 4 in the present application is simple and fast, and can ensure high construction efficiency while also ensuring the installation accuracy of the sound absorbing panel 4 .

[0035] Example

[0036] See attached Figure 1-6 Schematic diagram of the overall and partial structures of an embodiment of the present invention. The present invention specifically discloses a sound absorption and noise reduction device in a high-speed railway tunnel, including a crossbeam 2, a clamping rod 3 and a sound absorbing panel 4, all of which are arranged in a railway tunnel 1. The railway tunnel 1 in this embodiment is a circular tunnel;

[0037] The cross beam 2 with an L-shaped cross section is fixed to the inner wall of the railway tunnel 1 by expansion bolts 5. The length direction of the cross beam 2 is consistent with the extension direction of the railway tunnel 1. A plurality of cross beams 2 are provided and arranged in sequence along the circumference of the inner wall of the railway tunnel 1. The distance between every two adjacent cross beams 2 along the circumference of the inner wall of the railway tunnel 1 is the same.

[0038] A plurality of clamping rods 3 are provided and each is fixed to a plurality of cross beams 2. The length direction of the clamping rod 3 is the same as the length direction of the cross beam 2. The clamping rod 3 is provided with two clamping grooves which are arranged opposite to each other and have a rectangular groove cross section. The center line of the clamping rod 3 is arranged in the middle between the two clamping grooves. The length direction of the clamping groove is the same as the length direction of the clamping rod 3.

[0039] A plurality of arc-shaped sound-absorbing panels 4 are arranged between every two adjacent clamping rods 3. The curvature of the sound-absorbing panels 4 matches the curvature of the inner wall of the railway tunnel 1. The upper side and the lower side of the sound-absorbing panels 4 are respectively limited in two adjacent clamping grooves arranged along the circumferential direction of the inner wall of the railway tunnel 1. The ends of the plurality of sound-absorbing panels 4 are pressed against each other in sequence along the extension direction of the railway tunnel 1.

[0040] Sound absorbing panels 4 are installed on both sides of the track in the railway tunnel 1, and the number of sound absorbing panels 4 on both sides of the track in the railway tunnel 1 is the same and their positions are opposite; a plurality of beams 2 can be arranged in sequence along the extension direction of the railway tunnel 1, and there is a gap between two adjacent beams 2 along the extension direction of the railway tunnel 1, and the gap is greater than the board length of the sound absorbing panel 4.

[0041] The length of the crossbeam 2 is the same as that of the connecting rod 3, the ends of the crossbeam 2 and the connecting rod 3 are aligned, and the shortest distance between the uppermost connecting rod 3 and the ground in the railway tunnel 1 is 2-3 meters, that is, the arrangement height of the sound absorbing panel 4 is limited, and the sound absorbing panel 4 in this height range has the best sound absorption and noise reduction effect.

[0042] The clamping rod 3 in the present application includes a connecting plate 1 30, a connecting plate 2 31 and a connecting plate 3 32, all of which are rectangular. The length directions of the connecting plates 1 30, 2 31 and 32 are the same as the length direction of the beam 2. The connecting plate 1 30 is fixed to the beam 2 by welding or bolts 5. The connecting plate 2 31 is fixed to the connecting plate 1 30. The plate surface of the connecting plate 2 31 is perpendicular to the plate surface of the connecting plate 1 30. The connecting plate 1 30 is centrally arranged between the two long sides of the connecting plate 2 31. The plate surface of the connecting plate 32 is parallel to the plate surface of the connecting plate 2 31. A long side wall of the connecting plate 1 30 away from the beam 2 is detachably fixed to a side plate surface of the connecting plate 3 32. The connecting plate 1 30 is centrally arranged between the two long sides of the connecting plate 3 32. The connecting plate 1 30, the connecting plate 2 31 and the connecting plate 3 32 jointly define two clamping grooves. The center line of the connecting plate 1 30 in the plate length direction is centrally arranged between the two clamping grooves.

[0043] Regarding the detachable fixation of the connecting plate 1 30 and the connecting plate 3 32, in this embodiment, a long side wall of the connecting plate 1 30 away from the cross beam 2 is provided with a plurality of threaded holes, and the plurality of threaded holes are arranged in sequence and equidistantly along the length direction of the connecting plate 1 30, and a plurality of through holes are provided on the plate surface of the connecting plate 32, and the plurality of through holes can be directly opposite to the respective positions of the plurality of threaded holes, and one end of the bolt 5 is screwed into the threaded hole after passing through the through hole, and the bolt 5 cap of the bolt 5 and the long side wall of the connecting plate 1 30 jointly clamp the connecting plate 3 32; this design facilitates the maintenance or replacement of the sound absorbing panel 4 at a later stage.

[0044] Two limiting grooves are integrally formed on the plate surface of one side of the connecting plate three 32 close to the connecting plate two 31, and the limiting grooves pass through the two end walls of the connecting plate three 32. The connecting plate one 30 is arranged centrally between the two limiting grooves, and an elastic strip 6 made of rubber is clamped in each limiting groove. The length direction of the elastic strip 6 is the same as the groove length direction of the limiting groove. The plate surface of one side of the sound-absorbing panel 4 close to the connecting plate three 32 can abut against the elastic strip 6, and the elastic strip 6 can play a role of elastic buffering to ensure that no hard contact occurs between the sound-absorbing panel 4 and the connecting plate three 32; in addition, combined with the design of the detachable and fixed connecting plate one 30 and the connecting plate three 32, the elastic strip 6 is also easy to disassemble and replace.

[0045] A construction method of a sound absorbing and noise reducing device in a high-speed railway tunnel, using the above-mentioned sound absorbing and noise reducing device, the method is as follows:

[0046] The first step is to mark the inner wall of the railway tunnel 1 to mark the installation position of the cross beam 2, and then fix the cross beam 2 on the inner wall of the railway tunnel 1 from bottom to top, and ensure that the cross beam 2 is arranged horizontally;

[0047] In the second step, the clamping rod 3 and the sound absorbing panel 4 are installed in sequence from bottom to top, the clamping rod 3 is fixed to the crossbeam 2, and the upper side and the lower side of the sound absorbing panel 4 are respectively limited in two clamping grooves arranged adjacent to each other along the circumferential direction of the inner wall of the railway tunnel 1; that is, one clamping rod 3 is installed, and then the sound absorbing panel 4 is installed above the clamping rod 3, and it is ensured that the lower side of the sound absorbing panel 4 is inserted into the clamping groove of the clamping rod 3. After the above-mentioned sound absorbing panel 4 is arranged in place, the next clamping rod 3 is continuously installed above the sound absorbing panel 4, and it is ensured that the upper side of the sound absorbing panel 4 is inserted into the clamping groove on the above-mentioned next clamping rod 3.

[0048] The sound absorbing board 4 in the present application is a particle sound absorbing board, which has many interconnected tiny pores of various shapes inside. When sound is incident on the surface of the sound absorbing board 4, the sound waves will penetrate into the sound absorbing board 4 and propagate in the pores. Due to the viscosity and friction resistance generated by the movement of air, the sound energy is gradually converted into heat energy and consumed, thereby generating a resistive sound absorption effect.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sound absorption and noise reduction device in a high-speed railway tunnel, characterized in that: The invention comprises a crossbeam (2), a clamping rod (3) and a sound absorbing plate (4) all arranged in a railway tunnel (1); the crossbeam (2) is fixed to the inner wall of the railway tunnel (1); the length direction of the crossbeam (2) is consistent with the extension direction of the railway tunnel (1); a plurality of crossbeams (2) are provided and are arranged in sequence along the circumference of the inner wall of the railway tunnel (1); a plurality of clamping rods (3) are provided and each is fixed to a plurality of crossbeams (2); the length direction of the clamping rods (3) is consistent with the length direction of the crossbeams (2); the clamping rods ( 3) is provided with two oppositely arranged clamping grooves, the rod center line of the clamping rod (3) is arranged in the middle between the two clamping grooves, and the groove length direction of the clamping groove is the same as the rod length direction of the clamping rod (3); a plurality of sound absorbing panels (4) are arranged between each two adjacent clamping rods (3), the upper side edges and the lower side edges of the sound absorbing panels (4) are respectively limited in two adjacently arranged clamping grooves along the circumferential direction of the inner wall of the railway tunnel (1), and the ends of the plurality of sound absorbing panels (4) are successively pressed against each other along the extension direction of the railway tunnel (1).

2. The sound absorption and noise reduction device in a high-speed railway tunnel according to claim 1, characterized in that: The sound absorbing panels (4) are installed on both sides of the track in the railway tunnel (1), and the number of the sound absorbing panels (4) on both sides of the track in the railway tunnel (1) is the same and their positions are opposite.

3. The sound absorption and noise reduction device in a high-speed railway tunnel according to claim 1, characterized in that: The length of the cross beam (2) is the same as that of the clamping rod (3), the ends of the cross beam (2) and the clamping rod (3) are aligned, and the shortest distance between the uppermost clamping rod (3) and the ground inside the railway tunnel (1) is 2-3 meters.

4. The sound absorption and noise reduction device in a high-speed railway tunnel according to claim 1, characterized in that: The clamping rod (3) comprises a connecting plate 1 (30), a connecting plate 2 (31) and a connecting plate 3 (32); the length directions of the connecting plate 1 (30), the connecting plate 2 (31) and the connecting plate 3 (32) are all the same as the length direction of the crossbeam (2); the connecting plate 1 (30) is fixed to the crossbeam (2); the connecting plate 2 (31) is fixed to the connecting plate 1 (30); the plate surface of the connecting plate 2 (31) is perpendicular to the plate surface of the connecting plate 1 (30); the connecting plate 1 (30) is centrally arranged on both sides of the connecting plate 2 (31). The connecting plate 1 (30) is connected to the connecting plate 2 (31) and the connecting plate 3 (32) respectively. The connecting plate 1 (30) is connected to the connecting plate 2 (31) and the connecting plate 3 (32) respectively. The connecting plate 1 (30) is connected to the connecting plate 2 (31) and the connecting plate 3 (32) respectively. The connecting plate 1 (30) is connected to the connecting plate 2 (31) and the connecting plate 3 (32) respectively. The connecting plate 1 (30) is connected to the connecting plate 2 (31) and the connecting plate 3 (32) respectively. The connecting plate 1 (30) is connected to the connecting plate 2 (31) and the connecting plate 3 (32) respectively. The connecting plate 1 (30) is connected to the connecting plate 2 (31) and the connecting plate 3 (32) respectively. The connecting plate 1 (30) is connected to the connecting plate 2 (31) and the connecting plate 3 (32) respectively.

5. The sound absorption and noise reduction device in a high-speed railway tunnel according to claim 4, characterized in that: A threaded hole is provided on a long side wall of the connecting plate 1 (30) away from the cross beam (2), and a through hole is provided on the plate surface of the connecting plate 3 (32). One end of the bolt (5) passes through the through hole and is screwed into the threaded hole. The bolt (5) cap of the bolt (5) and the long side wall of the connecting plate 1 (30) jointly clamp the connecting plate 3 (32).

6. The sound absorption and noise reduction device in a high-speed railway tunnel according to claim 4, characterized in that: Two limiting grooves are integrally formed on a side plate surface of the connecting plate three (32) close to the connecting plate two (31), and the limiting grooves penetrate through the two end walls of the connecting plate three (32). The connecting plate one (30) is arranged centrally between the two limiting grooves. An elastic strip (6) is clamped in each of the limiting grooves, and the length direction of the elastic strip (6) is the same as the groove length direction of the limiting groove. The side plate surface of the sound absorbing plate (4) close to the connecting plate three (32) can abut against the elastic strip (6).

7. A construction method for a sound absorption and noise reduction device in a high-speed railway tunnel, characterized in that: Using the sound absorption and noise reduction device in a high-speed railway tunnel as described in any one of claims 1 to 6 above, the method is as follows: The first step is to mark the inner wall of the railway tunnel (1) to mark the installation position of the crossbeam (2), and then fix the crossbeam (2) on the inner wall of the railway tunnel (1); In the second step, the clamping rod (3) and the sound absorbing panel (4) are installed in sequence from bottom to top, the clamping rod (3) is fixed to the crossbeam (2), and the upper side and lower side of the sound absorbing panel (4) are respectively limited in two clamping grooves arranged adjacent to each other along the circumference of the inner wall of the railway tunnel (1).

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