CN108396600B - Novel vibration-damping noise-reducing track plate structure - Google Patents
Novel vibration-damping noise-reducing track plate structure Download PDFInfo
- Publication number
- CN108396600B CN108396600B CN201810461296.5A CN201810461296A CN108396600B CN 108396600 B CN108396600 B CN 108396600B CN 201810461296 A CN201810461296 A CN 201810461296A CN 108396600 B CN108396600 B CN 108396600B
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- track plate
- ogfc
- magnetic metal
- magnetic
- mass
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- 238000013016 damping Methods 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002923 metal particle Substances 0.000 claims abstract description 30
- 239000002344 surface layer Substances 0.000 claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 6
- 238000005336 cracking Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000011384 asphalt concrete Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a novel vibration-damping noise-reducing track plate which comprises an OGFC surface layer, a mass magnetic damper and a track plate concrete plate body. The OGFC surface layer is arranged on the upper surface of the track plate, and the height of the OGFC surface layer is not more than the height of a track supporting table of the track plate; the mass magnetic damper is of a cuboid structure and is arranged in a track plate body, nonmagnetic metal particles with different particle sizes are connected together at intervals by using a magnetic metal vertical rod in a cavity of the mass magnetic damper, a cylindrical iron mass block is connected in series at the middle position of the magnetic metal vertical rod, and the nonmagnetic metal particles and the cylindrical iron mass blocks are connected by springs. The invention has the advantages that: the novel vibration reduction and noise reduction track plate structure converts vibration kinetic energy of the track plate into kinetic energy of nonmagnetic metal particles in the damper through the characteristic of large porosity of OGFC materials and the characteristic of consumption kinetic energy of magnetic induction lines of cylindrical iron mass blocks, so that the track plate has more effective vibration reduction and noise reduction effects.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a novel vibration-damping noise-reducing rail plate.
Background
The ballastless track has the advantages of high stability, good smoothness, excellent durability, neat and attractive track bed and the like, and can also avoid the phenomenon of splashing of the ballasts when the ballasted track runs at a high speed. Along with the rapid development of high-speed railways in recent years, ballastless tracks are widely applied. Because the ballastless track has larger rigidity, the train generates larger noise and vibration when the ballastless track passes, and the noise and vibration have great influence on people and buildings nearby the line.
In practical situations, the existing track noise reduction measure is that sound barriers are arranged on two sides of a track, the measure is high in cost and far away from a noise source, and low-frequency noise can be transmitted, so that good noise reduction effect cannot be achieved; noise reduction by adopting the acoustic panel can cause the problems of complicated manufacturing process, higher cost, poor durability of materials and the like; the existing track vibration reduction measures mainly comprise elastic fasteners and floating slab tracks, so that wheel track noise is increased, and even wave grinding is caused; the adoption of CA mortar under the plate can generate a gap disease, and the shearing deformation capability of the CA mortar is limited because of the thinner CA mortar layer, so that the weakening effect on low-frequency vibration cannot achieve an ideal effect. Therefore, a novel rail plate structure with good vibration and noise reduction effects and economical and durable performance is needed.
Disclosure of Invention
The invention aims to provide a novel vibration-damping and noise-reducing track plate structure, which overcomes the defects of the prior art, particularly improves the performance of the vibration-damping and noise-reducing plate of the track structure, and reduces the cost for manufacturing vibration-damping and noise-reducing measures of the track structure.
The aim of the invention can be achieved by the following technical scheme:
a novel vibration-damping noise-reducing track plate comprises an OGFC surface layer, a mass magnetic damper and a track plate. The OGFC surface layer is arranged on the upper surface of the track plate, and the height of the OGFC surface layer is not more than the height of a track supporting table of the track plate; the mass magnetic damper is of a cuboid structure and is arranged in a track plate body, nonmagnetic metal particles with different particle sizes are connected together at intervals by using a magnetic metal vertical rod in a cavity of the mass magnetic damper, a cylindrical iron mass block is connected in series at the middle position of the magnetic metal vertical rod, and the nonmagnetic metal particles and the cylindrical iron mass blocks are connected by springs. The OGFC surface layer and the track plate are fixed through a connecting piece.
As a preferred design, the OGFC layer comprises an open graded high porosity asphalt concrete material and an anti-cracking reinforcing mesh arranged on the surface layer of the OGFC layer to prevent the OGFC layer from cracking.
As a preferred embodiment, the mass magnetic damper comprises a damper chamber, non-magnetic metal particles, a magnetic metal vertical rod, a cylindrical iron mass and a spring.
As a preferable design scheme, the sum of the projection lengths of the non-magnetic metal particle diameters on the magnetic metal vertical rod is 30% -40% of the length of the permanent magnet metal vertical rod.
As a preferred embodiment, the non-magnetic metal particles consist of a plurality of non-magnetic metal particles having diameters of 5mm and 10mm and having a central opening (slightly larger in diameter than the magnet metal vertical rod).
As an optimal design scheme, the magnetic metal vertical rod comprises a metal rod and embedded annular magnets vertically arranged at intervals in the middle range of three sections of the metal rod.
As a preferred design, the vertical height of the cylindrical iron mass is 10% of the length of the magnetic metal vertical rod, and is arranged at 1/2 of the height of the magnetic metal vertical rod.
As a preferred design scheme, the subsystems consisting of the nonmagnetic metal particles, the magnetic metal vertical rods, the mass blocks and the springs are arranged in the damping cylindrical ironware cavity in an array at a certain density, and the nonmagnetic metal particles with corresponding heights in the horizontal direction are connected by the springs.
As a preferred embodiment, the horizontal and vertical springs have different stiffness.
As an advantageous embodiment, the mass magnetic damper is arranged in the middle of the two rail bearing tables in the rail plate.
As an advantageous embodiment, the rail plate is provided with rectangular cavities for accommodating dampers at intermediate positions of the two rail bearing tables along the rail plate at intervals in the longitudinal direction.
The invention has the advantages that:
(1) The novel vibration reduction and noise reduction track plate can fully exert the advantages of sound absorption and noise reduction of the OGFC surface layer and vibration reduction of the mass magnetic damper, and has wide application prospect.
(2) The porosity of the OGFC surface layer is larger, so that water on the surface of the track plate body can be effectively and rapidly discharged.
(3) The adopted nonmagnetic metal particles are connected by the springs, so that the vibration kinetic energy of the track plate can be effectively transferred to the nonmagnetic metal particles, the kinetic energy of the nonmagnetic metal particles is increased, and when the nonmagnetic metal particles vibrate up and down along the magnetic metal vertical rods, the nonmagnetic metal particles drive the cylindrical iron mass blocks to do cutting magnetic induction line movement, so that damping is generated, and the purpose of energy consumption is achieved.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present patent, the following figures are drawn and introduced.
FIG. 1 is a longitudinal cross-sectional view of a novel vibration and noise reducing track slab block diagram;
FIG. 2 is a top view of a novel vibration and noise reducing track plate structure;
FIG. 3 is a transverse cross-sectional view of a novel vibration and noise reducing track slab block diagram;
fig. 4 is a schematic diagram of a novel vibration and noise reduction track plate mass magnetic damper.
Fig. 5 is a schematic view of a novel vibration and noise reduction track plate mass magnetic damper magnet metal vertical rod.
FIG. 6 is a schematic view of a novel vibration and noise reducing track plate structure diagram connector.
Summarizing the reference numerals:
100-OGFC surface layer, 200-mass magnetic damper, 210-magnet metal vertical rod, 211-metal rod, 212-embedded annular magnet, 220-non-magnetic metal particle, 230-cylindrical iron mass block, 240-spring, 250-mass damper cavity, 300-track plate, 400-connecting piece, 500-anti-cracking reinforcing steel mesh.
Detailed Description
The present invention will be described in detail with reference to the drawings and examples, which are only a few examples of the present invention. Based on the embodiments of the present invention, those skilled in the art could obtain the embodiments without other inventive efforts to do so are within the scope of this invention.
Examples:
as shown in fig. 1-4, embodiments of the present invention provide a novel vibration and noise reduction track plate that includes an OGFC topcoat 100, a mass magnetic damper 200, and a track plate 300. The OGFC surface layer 100 is arranged on the upper surface of the track plate 300, and the height of the OGFC surface layer is not more than the height of a track bearing table of the track plate 300; the mass magnetic damper 200 is in a cuboid structure and is arranged in the plate body of the track plate 300, the non-magnetic metal particles 220 with different particle diameters are connected together at intervals by using the magnetic metal vertical rods 210 in the cavity of the mass magnetic damper 200, a cylindrical iron mass block 230 is connected in series at the middle position of the magnetic metal vertical rods 210, and the non-magnetic metal particles 220 and the cylindrical iron mass blocks 230 are connected by using springs 240. The OGFC facing 100 and the track slab concrete slab 300 are fixed by a connecting piece 400. The upper surface of the OGFC surface layer 100 is provided with an anti-cracking reinforcing mesh 500.
As shown in fig. 1-3, the structure of the mass magnetic damper 200 of the present invention is disposed inside a middle track plate 300 of two bearing rails, and subsystems composed of non-magnetic metal particles 220, a magnetic metal vertical rod 210, a mass block 230 and springs 240 inside the structure of the mass magnetic damper 200 are arranged in a certain density in a cavity of the mass magnetic damper 200, and the non-magnetic metal particles 220 with corresponding heights in the horizontal direction are connected by the springs 240.
As shown in fig. 4, the horizontal and vertical springs 240 in the structural cavity of the mass magnetic damper 200 have different rigidities.
As shown in fig. 5, the magnetic metal vertical rod 210 includes a metal rod 211 and embedded ring magnets 212 vertically spaced apart within the middle of the three sections of the metal rod.
As shown in fig. 6, the connector 400 employs a peg having a length not exceeding the height of the rail bearing platform, the peg being rigidly connected to the track plate 300.
The construction steps of the novel vibration reduction and noise reduction track plate are as follows:
(1) The method comprises the steps of manufacturing a track plate 300, reserving cuboid empty slots with the same volume as that of the structure of the mass magnetic damper 200 in the plate 300 between two rail bearing tables of the concrete plate 300, and arranging connecting pieces 400 studs on the upper surface of the track plate 300.
(2) The method comprises the steps of manufacturing a mass magnetic damper 200, manufacturing a magnetic metal vertical rod 210 by using a metal rod 211 and vertically arranging embedded annular magnets 212 at intervals in the middle range of three sections of the metal rod, stringing nonmagnetic metal particles 220 with different particle diameters together at intervals by using the magnetic metal vertical rod 210 in the mass magnetic damper 200, stringing a cylindrical iron mass block 230 at the middle position of the magnetic metal vertical rod 210, connecting the nonmagnetic metal particles 220 and the cylindrical iron mass blocks 230 by springs, forming an array in a certain density in a cavity of the mass magnetic damper 200 by using subsystems consisting of the nonmagnetic metal particles 220, the magnetic metal vertical rod 210, the mass blocks 230 and the springs 240 in the structure of the mass magnetic damper 200, and connecting the nonmagnetic metal particles 220 with corresponding heights in the horizontal direction by using the springs 240, wherein the subsystems are connected with the inner wall of the cavity of the mass magnetic damper 200 in the vertical and horizontal directions by using the springs 240.
(3) The mass magnetic damper 200 is placed in a rectangular hollow in the concrete slab 300 and fixed.
(4) And preparing an OGFC surface layer 100 asphalt concrete mixture.
(5) And (3) manufacturing a template, namely paving the mixture of the OGFC surface layer 100 on the track plate 300, wherein the paving height is not more than the height of the rail bearing table.
(6) The anti-cracking reinforcing mesh 500 is arranged on the top of the OGFC surface layer 100 to form a vibration reduction and noise reduction track plate.
Claims (4)
1. Novel damping and noise reduction track plate structure is characterized in that: the structure comprises an OGFC surface layer (100), a mass magnetic damper (200) and a track plate (300); the OGFC surface layer (100) is arranged on the upper surface of the track plate (300), and the height of the OGFC surface layer is not more than the height of a track bearing table of the track plate (300); the mass magnetic damper (200) is of a cuboid structure and is arranged in a plate body of the track plate (300), non-magnetic metal particles (220) with different particle diameters are connected together at intervals by using a magnetic metal vertical rod (210) in a cavity of the mass magnetic damper (200), a cylindrical iron mass block (230) is connected in series at the middle position of the magnetic metal vertical rod (210), and the non-magnetic metal particles (220) and the cylindrical iron mass blocks (230) are connected by using springs (240); the OGFC surface layer (100) comprises an open graded high-porosity OGFC mixture and an anti-cracking reinforcing mesh (500) arranged on the surface layer of the OGFC surface layer (100) for preventing the OGFC surface layer (100) from cracking; the mass magnetic damper (200) structure comprises a damper cavity (250), non-magnetic metal particles (220), a magnetic metal vertical rod (210), a cylindrical iron mass block (230) and a spring (240).
2. The novel vibration and noise reduction track plate structure according to claim 1, wherein: the non-magnetic metal particles (220) are a plurality of non-magnetic metal round particles with diameters of 5mm and 10mm, and the sum of the projection lengths of the diameters of the non-magnetic metal particles in the magnetic metal vertical rods (210) is 30% -40% of the rod length of the magnetic metal vertical rods (210).
3. The novel vibration and noise reduction track plate structure according to claim 1 or 2, wherein: the magnetic metal vertical rod (210) comprises a metal rod (211) and embedded annular magnets (212) vertically arranged at intervals in the middle range of three sections of the metal rod.
4. The novel vibration and noise reduction track plate structure according to claim 1, wherein: the track plate (300) is provided with cuboid cavities for placing the dampers (200) at intervals along the longitudinal direction of the track plate at the middle positions of the two track supporting tables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810461296.5A CN108396600B (en) | 2018-05-15 | 2018-05-15 | Novel vibration-damping noise-reducing track plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810461296.5A CN108396600B (en) | 2018-05-15 | 2018-05-15 | Novel vibration-damping noise-reducing track plate structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108396600A CN108396600A (en) | 2018-08-14 |
| CN108396600B true CN108396600B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810461296.5A Active CN108396600B (en) | 2018-05-15 | 2018-05-15 | Novel vibration-damping noise-reducing track plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108396600B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2587492B (en) * | 2017-10-05 | 2022-02-16 | Nexcem Inc | Sound absorption panel |
| CA3018714C (en) | 2017-10-05 | 2021-05-11 | Nexcem Inc. | Sound absorption panel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203034318U (en) * | 2012-12-21 | 2013-07-03 | 常州市铭锦弹簧有限公司 | Track vibration attenuation and noise reduction device |
| CN203821179U (en) * | 2014-01-20 | 2014-09-10 | 铁道第三勘察设计院集团有限公司 | Vibration damping and noise reduction plate of track |
| CN208395580U (en) * | 2018-05-15 | 2019-01-18 | 华东交通大学 | A kind of hardened structure of novel damping noise reduction track |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030136858A1 (en) * | 2002-01-22 | 2003-07-24 | Zicha Jan Herman | Internally resilient tie for railway track |
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2018
- 2018-05-15 CN CN201810461296.5A patent/CN108396600B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203034318U (en) * | 2012-12-21 | 2013-07-03 | 常州市铭锦弹簧有限公司 | Track vibration attenuation and noise reduction device |
| CN203821179U (en) * | 2014-01-20 | 2014-09-10 | 铁道第三勘察设计院集团有限公司 | Vibration damping and noise reduction plate of track |
| CN208395580U (en) * | 2018-05-15 | 2019-01-18 | 华东交通大学 | A kind of hardened structure of novel damping noise reduction track |
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| Publication number | Publication date |
|---|---|
| CN108396600A (en) | 2018-08-14 |
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