CN117721671A - Embedded track structure suitable for existing subway vibration damping and noise reduction transformation - Google Patents
Embedded track structure suitable for existing subway vibration damping and noise reduction transformation Download PDFInfo
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- CN117721671A CN117721671A CN202311757926.0A CN202311757926A CN117721671A CN 117721671 A CN117721671 A CN 117721671A CN 202311757926 A CN202311757926 A CN 202311757926A CN 117721671 A CN117721671 A CN 117721671A
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- 230000009467 reduction Effects 0.000 title claims abstract description 55
- 230000009466 transformation Effects 0.000 title claims abstract description 12
- 238000013016 damping Methods 0.000 title claims description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 229910052742 iron Inorganic materials 0.000 claims abstract description 35
- 229920001971 elastomer Polymers 0.000 claims abstract description 32
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 238000005056 compaction Methods 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000746 Structural steel Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
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Abstract
The invention discloses an embedded track structure suitable for vibration and noise reduction transformation of an existing subway line, which comprises an iron base plate, an elastic base plate, a lower foundation, a track plate, steel rails, a filling assembly, a buffer assembly, a rubber pad, a locking assembly, a connecting assembly, a fastening assembly and a limiting assembly, wherein a base plate is arranged at the top of the lower foundation. The embedded track is installed on the track bed or the track bearing platform of the existing line through the anchor bolts by utilizing the bolt hole sites of the elastic strip fastener system of the existing line of urban rail transit, and the track bed and the track plate of the existing line are not required to be adjusted and installed simply and efficiently. The high polymer material is used for continuously supporting and continuously locking the steel rail to realize vibration reduction and noise reduction transformation, so that environmental vibration pollution caused by train running is reduced, the transverse vibration reduction effect of the steel rail is improved, transverse vibration can be well inhibited when the steel rail is in a curve section, the steel rail has good service performance, the service life of a rail structure is prolonged, and the running safety of the train is ensured.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to an embedded rail structure suitable for vibration damping and noise reduction transformation of the existing subway.
Background
Urban rail transit is taken as a preferred travel traffic mode by masses of citizens due to the advantages of convenience, comfort and the like, enters a high-speed development stage and presents worldwide rare speed and scale under the large situation of novel urban rapid propulsion and urban preferential public traffic development, but meanwhile, the problems of environmental vibration along the line and indoor secondary structural noise of a building caused by train operation are brought into the spotlight. In recent years, a great deal of researches are carried out on vibration and noise caused by subways by related scholars, and the environmental vibration caused by subways is mainly low-frequency and mainly caused by train running on viaducts is found by combining on-site practical tests, and the main frequency of the environmental vibration caused by the trains running on the viaducts is approximately 10-120 Hz and the main frequency of the environmental vibration caused by the trains running on tunnels is approximately 0-40 Hz. The vibration reduction measures of the domestic subway are more, and the vibration reduction can be divided into three types of medium vibration reduction, high vibration reduction and special vibration reduction according to vibration sources, wherein the medium vibration reduction is mainly an elastic fastener, the high vibration reduction comprises an elastic sleeper, a vibration reduction pad floating slab and the like, and the special vibration reduction comprises a steel spring floating slab ballast bed, a rubber pad floating slab ballast bed and the like.
Compared with the common rail structure of the subway, the conventional vibration and noise reduction measures have the advantages that the vibration reduction effect of medium vibration reduction is 3-6 dB, the vibration reduction effect of higher vibration reduction is 5-10 dB, the vibration reduction effect of special vibration reduction is more than 10dB, and the conventional vibration reduction mode cannot meet the requirements along with the improvement of the requirements of people on environmental noise. The steel spring floating plate has a vibration damping effect on vibration with the vibration frequency being more than 10Hz, the vibration damping pad floating plate has a vibration damping effect on vibration with the vibration frequency being more than 25Hz, the vibration damping effect on medium-high frequency vibration is mainly achieved, the human body has a sharp vibration feeling on the frequency range of 0-80 Hz, resonance can occur when the vibration frequency is close to the natural frequency of the human body, and further injury is caused to the human body. The embedded track can be widely applied to the tram, and the vibration damping effect of the embedded track on the vibration noise of the frequency range of 1-80 Hz can reach 12dB. For the existing subway line with vibration noise sections, the traditional vibration reduction measures are adopted, the construction speed is low, forward and backward slopes are easy to generate, and the vibration reduction performance is poor.
In summary, in order to solve the existing subway line vibration damping and noise reduction transformation problem, fully consider the embedded track vibration damping and noise reduction advantage, design an embedded track suitable for subway vibration damping and noise reduction transformation, it has better vibration damping effect, can play vibration damping effect to low frequency vibration, advantage such as being convenient for construction installation.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an embedded track structure suitable for vibration damping and noise reduction transformation of the existing subway.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an embedded track structure suitable for transformation of making an uproar falls in existing subway damping, includes iron backing plate, elastic backing plate, lower part basis, track board, rail, filling component, buffer module, rubber pad, locking subassembly, linking subassembly, fastening component and spacing subassembly, the top of lower part basis is equipped with the bed plate, the top of bed plate is equipped with self-compaction concrete, track board fixed mounting is at self-compaction concrete's top, the symmetry is provided with two rail bearing tables of standard gauge on the track board, two all be equipped with buffer module on the top surface of rail bearing table, a plurality of buffer module's top all is equipped with the iron backing plate, iron backing plate both sides all are equipped with the rubber pad, a plurality of spacing subassembly is located the bilateral symmetry position of iron backing plate respectively, the rubber pad is located between iron backing plate and the spacing subassembly, and forms the filling chamber between iron backing plate, rubber pad and the spacing subassembly, the rail is located spacing subassembly's symmetry axle department, and the rail is equipped with the elastic backing plate, filling chamber surplus space of filling, fastening component sets up in spacing subassembly both sides, and fastening component and adjacent spacing subassembly all are equipped with iron backing plate, linking subassembly, fastening component, rail, linking component, all are equipped with on the fixed linking subassembly, rail, locking subassembly, and locking subassembly.
Preferably, the limiting component is a steel plate with the thickness of 3 mm.
Preferably, the fastening component is an anchor bolt, and the anchor bolt is made of high-quality carbon structural steel or alloy steel.
Preferably, the engagement assembly is a spring washer made of 60Mn or 60Si 2 Mn。
Preferably, the locking component is an interlocking cover plate, and the material of the interlocking cover plate is QT450-10.
Preferably, the thickness of rubber pad is 1mm, the buffer assembly is insulating buffer backing plate, the material of insulating buffer backing plate is rubber and plastic and thickness is 6mm.
Preferably, the filling component is made of a high polymer material, and polyurethane is selected as the high polymer material in the invention because the polyurethane has the advantages of good vibration and noise reduction performance, low natural frequency, good durability and the like.
Preferably, the elastic pad is a groove pad of rubber material.
Preferably, the iron shim plate is QT450-10 conventional sand gravity casting.
Compared with the prior art, the invention has the beneficial effects that:
1. through carrying out optimal design to traditional embedded track, utilize spacing subassembly, filling subassembly, rubber pad, elastic backing plate, iron backing plate and rail to constitute novel embedded rail structure, expand embedded track pattern, utilize the bullet strip fastener system bolt hole site of existing circuit, install embedded rail structure on the track board through fastening assembly, make things convenient for the field change of service department, improve existing circuit vibration damping and noise reduction transformation efficiency, reduce the operation influence to existing circuit.
2. The two limit components are arranged, a filling cavity is formed between the two limit components, a steel rail is arranged in the filling cavity, the steel rail is tightly wrapped by the filling component in the filling cavity, the steel rail is continuously supported and continuously fixed, secondary deflection of the steel rail can not occur when a train runs, the transverse vibration reduction performance of the curve section track is enhanced, the service life of the steel rail is prolonged, and the operation and maintenance cost is reduced.
3. The embedded steel rail structure filling assembly is polyurethane, a transition vibration reduction area is formed between the steel rail and the limiting assembly, vibration transmission is slowed down, service life of the embedded steel rail structure is prolonged, the embedded steel rail structure is installed on the track plate through the fastening assembly, an insulating buffer pad is arranged between the embedded steel rail structure and the track plate, contact area is increased, stability of transmission is guaranteed, vibration transmission is reduced due to the buffering effect, vibration of the steel rail vibration transmission layer by layer is reduced when the embedded track runs on a train, good vibration reduction effect and wide vibration reduction frequency spectrum are achieved, and surrounding environment vibration is reduced.
Drawings
Fig. 1 is a cross-sectional view of an embedded track structure suitable for vibration damping and noise reduction reconstruction of an existing subway.
Fig. 2 is a cross-sectional view of an embedded track structure suitable for vibration damping and noise reduction reconstruction of an existing subway.
Fig. 3 is a schematic diagram of an embodiment of an embedded track structure suitable for vibration damping and noise reduction reconstruction of an existing subway.
Fig. 4 is a schematic diagram of an embedded track structure suitable for vibration damping and noise reduction reconstruction of an existing subway.
Fig. 5 is a three-dimensional schematic diagram of an embedded track structure suitable for vibration damping and noise reduction reconstruction of an existing subway.
In the figure: the steel rail self-compaction device comprises a limiting component 1, a fastening component 2, a connecting component 3, a locking component 4, a rubber pad 5, a buffering component 6, a filling component 7, a steel rail 8, a filling cavity 9, a rail plate 10, a rail bearing table 11, self-compaction concrete 12, a base plate 13, a lower foundation 14, an elastic cushion plate 15 and an iron cushion plate 16.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, an embedded track structure suitable for vibration damping and noise reduction reconstruction of existing subways comprises an iron base plate 16, an elastic base plate 15, a lower base 14, a track plate 10, steel rails 8, a filling assembly 7, a buffer assembly 6, a rubber pad 5, a locking assembly 4, a connecting assembly 3, a fastening assembly 2 and a limiting assembly 1, wherein a base plate 13 is arranged at the top of the lower base 14, self-compacting concrete 12 is arranged at the top of the base plate 13, the track plate 10 is fixedly arranged at the top of the self-compacting concrete 12, two rail bearing tables 11 with standard rail gauges are symmetrically arranged on the track plate 10, the top surfaces of the two rail bearing tables 11 are respectively provided with a buffer assembly 6, the tops of the buffer assemblies 6 are respectively provided with an iron base plate 16, rubber pads 5 are respectively arranged at two sides of the iron base plate 16, the two symmetrical positions of the iron base plate 16 are respectively located by the plurality of limiting assemblies 1, the rubber pad 5 is located between the iron base plate 16 and the limiting assemblies 1, the iron base plate 16 and the rubber pad 5 form a filling cavity 9, a steel rail 8 is arranged in the filling cavity 9, the steel rail 8 is located at the symmetrical axis of the limiting assemblies 1, an elastic base plate 15 is arranged at the rail bottom of the steel rail 8, the filling assembly 7 fills the residual space of the filling cavity 9 and supports and locks the steel rail 8, the fastening assembly 2 is arranged on two sides of the limiting assemblies 1, the connecting assembly 3 and the locking assembly 4 are arranged between the fastening assembly 2 and the adjacent limiting assemblies 1, and the iron base plate 16, the elastic base plate 15, the steel rail 8, the filling assembly 7, the buffer assembly 6, the rubber pad 5, the locking assembly 4, the connecting assembly 3, the fastening assembly 2 and the limiting assemblies 1 are fixedly arranged on the track plate 10.
In the invention, the limit component 1 is a steel plate with the thickness of 3mm, the iron backing plate 16 is QT450-10 traditional sand mould gravity casting, the steel plate and the iron backing plate 16 mainly provide a filling cavity 9 for the filling component 7, the steel rail 8 is arranged in the filling cavity 9, the filling component 7 can continuously support and fix the steel rail 8, the stability and the safety of a track are ensured, and the vibration and noise reduction effects are achieved.
In the invention, the thickness of the rubber pad 5 is 1mm, the rubber pad 5 is used as a common connecting piece, an elastic transition area is mainly formed between the limiting component 1 and the iron base plate 16, the vibration transmission of the limiting component 1 and the iron base plate 16 under the action of vibration load is improved, the service life of the limiting component 1 and the iron base plate 16 is prolonged, and the abrasion caused by direct contact is avoided.
In the invention, the fastening component 2 is an anchor bolt, the anchor bolt is made of high-quality carbon structural steel or alloy steel, the anchor bolt is a fastener composed of a head part and a screw rod, and is usually used together with a nut for fastening and connecting two parts with through holes, the anchor bolt mainly has the functions of fixing an embedded steel rail 8 on a track plate 10 and ensuring the stability and the safety of the track, and in the track installation, the anchor bolt anchors a steel bar which is a connecting piece to the hardened track plate 10 to form a stable track structure, so that the safety and the smoothness of the running of a train or a vehicle are ensured, meanwhile, the anchor bolt has better fatigue resistance, fewer damage situations occur in service and the operation and maintenance cost is greatly reduced.
It is noted that in fig. 2, the fastening assembly 2 positions correspond to the hole sites of two different fastener systems. One group closer to the steel rail 8 is the hole site of the III-shaped spring bolt, and the other group is the hole site of the W-shaped spring bolt. The hole site can carry out post-processing according to the demand. That is, the structure of the present application may be made without perforation and then re-perforated according to the existing thread fastener system.
In the invention, the connecting component 3 is a spring washer, and the spring washer is made of 60Mn or 60Si 2 Mn,60Mn or 60Si 2 Mn has higher strength, hardness, wear resistance and toughness, and the main function of the spring washer is to effectively absorb and disperse shock and impact between the anchor bolt and the interlocking cover plate when the train runs, reduce damage and destruction of the anchor bolt and the interlocking cover plate, and prolong the service life of the embedded track.
In the invention, the locking component 4 is an interlocking cover plate, the interlocking cover plate is made of QT450-10, the QT450-10 is ductile iron with high strength, high hardness and high toughness, the ductile iron has excellent mechanical property and wear resistance, the interlocking cover plate made of the QT450-10 mainly protects the transmitting and receiving equipment of a track circuit, the safety and the reliability of railway transportation are ensured, the interlocking cover plate is used for preventing a train or a vehicle from entering the track without corresponding signal lamp inspection or unauthorized access, the interlocking cover plate is connected with a control system of the track circuit, the transmitting and receiving equipment of the track circuit is completely covered at any time, the interference or damage can not be caused, and when the train or the vehicle approaches the track, the interlocking cover plate can be automatically opened to allow the train or the vehicle to pass through, and meanwhile, the transmitting and receiving equipment of the track circuit is ensured not to be influenced.
In the invention, the elastic cushion 15 is a groove cushion made of rubber material, the buffer assembly 6 is an insulating cushion, the insulating cushion is made of rubber and plastic and has a thickness of 6mm, the functions of the insulating cushion 15 and the insulating cushion in the track are mainly to reduce the overall rigidity of the track, buffer high-speed impact vibration generated when a vehicle passes through, protect the track plate 10 and electrically insulate a signal system, and the rubber cushion has good ageing resistance, cold resistance and heat resistance and long service life.
In the invention, the filling component 7 is high molecular compound polyurethane, the polyurethane has the remarkable advantages of wide vibration reduction spectrum, good vibration reduction effect, long service life and the like, the gap between the polyurethane and the filling cavity 9 is required to be reduced when filling operation is carried out, the occurrence of a bubble cavity is avoided, the natural frequency of the polyurethane is reduced due to the fact that the physical bond part in the polyurethane is dissociated in the deformation of the train load transmitted by the steel rail 8, and when the material with low natural frequency processes sound waves with similar frequency, intense internal friction can be generated through resonance effect, so that the sound energy is efficiently converted into heat energy, low-frequency vibration reduction and noise reduction are realized, and low-frequency environmental vibration and noise caused by urban rail transit are reduced.
The detailed working process of the invention is as follows:
the track structure comprises a steel rail 8, a filling assembly 7, a limiting assembly 1, a fastening assembly 2, a connecting assembly 3, a locking assembly 4, a base plate 5, a buffer assembly 6, a track plate 10, self-compacting concrete 12, a base plate 13, a lower foundation 14, an elastic base plate 15 and an iron base plate 16 from top to bottom. The top of lower part basis 14 is equipped with bed plate 13, the top of bed plate 13 is equipped with self-compaction concrete 12, track slab 10 fixed mounting is at self-compaction concrete 12's top, the symmetry is provided with two rail bearing tables 11 of standard gauge on track slab 10, all be equipped with buffer module 6 on the top surface of two rail bearing tables 11, the top of a plurality of buffer modules 6 all is equipped with iron backing plate 16, iron backing plate 16 both sides are equipped with rubber pad 5, spacing subassembly 1 sets up on rubber pad 5 respectively, and iron backing plate 16, form between rubber pad 5 and spacing subassembly 1 and fill chamber 9, rail 8 is located spacing subassembly 1's symmetry axle department, and rail 8 is equipped with elastic backing plate 15 below, fill subassembly 7 fills the surplus space in fill chamber 9, fastening assembly 2 sets up in spacing subassembly 1 both sides, and all be equipped with link up subassembly 3 and locking subassembly 4 between fastening assembly 2 and the adjacent spacing subassembly 1, make iron backing plate 16, elastic backing plate 15, rail 8, fill subassembly 7, buffer module 6, rubber pad 5, locking subassembly 4, link up subassembly 3, fastening assembly 2 and spacing subassembly 1 fixed mounting is on track slab 10.
The foregoing is merely one specific embodiment of the present invention and is not to be construed as limiting the scope of the invention. It should be noted that, within the technical scope of the present disclosure, any person skilled in the art may make equivalent substitutions or modifications according to the technical solution of the present disclosure and the inventive concept thereof, which fall within the protection scope of the present disclosure. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. The utility model provides an embedded track structure suitable for improvement of making an uproar falls in existing subway damping, its characterized in that includes iron backing plate (16), elastic backing plate (15), lower part basis (14), track board (10), rail (8), filling component (7), buffer unit (6), rubber pad (5), locking subassembly (4), linking subassembly (3), fastening component (2) and spacing subassembly (1), the top of lower part basis (14) is equipped with bed plate (13), the top of bed plate (13) is equipped with self-compaction concrete (12), track board (10) fixed mounting is at the top of self-compaction concrete (12), two rail bearing platforms (11) of standard track gauge are provided with on track board (10), two all be equipped with buffer unit (6) on the top surface of rail bearing platform (11), a plurality of buffer unit (6) top all is equipped with iron backing plate (16), iron backing plate (16) both sides all are equipped with rubber pad (5), a plurality of spacing subassembly (1) are located the both sides symmetry position of iron backing plate (16) respectively, iron backing plate (16) and spacing subassembly (1) are located between the spacing subassembly (1) and the spacing rubber pad (1), the steel rail (8) is located the symmetry axis department of spacing subassembly (1), and is equipped with elastic backing plate (15) under steel rail (8), fill subassembly (7) and fill cavity (9) surplus space, fastening component (2) set up in spacing subassembly (1) both sides, and all be equipped with between fastening component (2) and the adjacent spacing subassembly (1) and link up subassembly (3) and locking subassembly (4), iron backing plate (16), elastic backing plate (15), steel rail (8), fill subassembly (7), buffer module (6), rubber pad (5), locking subassembly (4), link up subassembly (3), fastening component (2) and spacing subassembly (1) all fixed mounting on track board (10).
2. An embedded track structure suitable for existing subway vibration and noise reduction reconstruction according to claim 1, wherein the limiting component (1) is a steel plate with the thickness of 3 mm.
3. The embedded track structure suitable for the vibration and noise reduction transformation of the existing subway according to claim 1, wherein the fastening component (2) is an anchor bolt, and the anchor bolt is made of high-quality carbon structural steel or alloy steel.
4. An embedded track structure suitable for existing subway vibration and noise reduction reconstruction according to claim 1, characterized in that the engagement assembly (3) is a spring washer made of 60Mn or 60Si 2 Mn。
5. The embedded track structure suitable for vibration and noise reduction reconstruction of the existing subway according to claim 1, wherein the locking component (4) is an interlocking cover plate, and the interlocking cover plate is made of QT450-10.
6. The embedded track structure suitable for existing subway vibration and noise reduction transformation according to claim 1, wherein the thickness of the rubber pad (5) is 1mm, the buffer component (6) is an insulating buffer pad, and the insulating buffer pad is made of rubber and plastic and has a thickness of 6mm.
7. An embedded track structure suitable for existing subway vibration and noise reduction reconstruction according to claim 1, wherein the filling component (7) is high molecular compound polyurethane.
8. An embedded track structure suitable for vibration and noise reduction reconstruction of existing subways according to claim 1, characterized in that the resilient pads (15) are groove pads of rubber material.
9. An embedded track structure suitable for vibration and noise reduction reconstruction of existing subways according to claim 1, characterized in that the iron pad (16) is QT450-10 conventional sand gravity casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311757926.0A CN117721671A (en) | 2023-12-20 | 2023-12-20 | Embedded track structure suitable for existing subway vibration damping and noise reduction transformation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311757926.0A CN117721671A (en) | 2023-12-20 | 2023-12-20 | Embedded track structure suitable for existing subway vibration damping and noise reduction transformation |
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| CN117721671A true CN117721671A (en) | 2024-03-19 |
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| CN202311757926.0A Pending CN117721671A (en) | 2023-12-20 | 2023-12-20 | Embedded track structure suitable for existing subway vibration damping and noise reduction transformation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118345667A (en) * | 2024-06-18 | 2024-07-16 | 中电建成都建设投资有限公司 | Noise reduction railway track and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118345667A (en) * | 2024-06-18 | 2024-07-16 | 中电建成都建设投资有限公司 | Noise reduction railway track and system |
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Inventor after: Liu Xiangming Inventor after: Zhong Jie Inventor after: Xiao Yuanxin Inventor after: Jiang Huihuang Inventor after: Guo Yalei Inventor after: Xu Lei Inventor after: Wang Daozhong Inventor after: Yan Xiaoxia Inventor after: Liu Yu Inventor after: Guo Jianqin Inventor after: Chen Ying Inventor before: Liu Xiangming Inventor before: Zhong Jie Inventor before: Xiao Yuanxin Inventor before: Jiang Huihuang Inventor before: Guo Yalei Inventor before: Xu Lei Inventor before: Wang Daozhong Inventor before: Yan Xiaoxia Inventor before: Liu Yu Inventor before: Guo Jianqin Inventor before: Chen Ying |
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