CN110499676A - A kind of floating plate track locally resonant type supporting structure - Google Patents
A kind of floating plate track locally resonant type supporting structure Download PDFInfo
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- CN110499676A CN110499676A CN201910624905.9A CN201910624905A CN110499676A CN 110499676 A CN110499676 A CN 110499676A CN 201910624905 A CN201910624905 A CN 201910624905A CN 110499676 A CN110499676 A CN 110499676A
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- Prior art keywords
- resonant type
- supporting structure
- type supporting
- floating plate
- locally resonant
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- 229920001971 elastomer Polymers 0.000 claims abstract description 41
- 239000005060 rubber Substances 0.000 claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 claims abstract description 4
- 239000004814 polyurethane Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 42
- 125000006850 spacer group Chemical group 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 9
- 239000002356 single layer Substances 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000017105 transposition Effects 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000005316 response function Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000002834 transmittance Methods 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
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
-
- 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
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of floating plate track locally resonant type supporting structures, locally resonant type supporting structure is set to above foundation structure, locally resonant type supporting structure supports floating plate by axial direction, locally resonant type supporting structure is overlapped by identical multilayered structure along axial direction, steel oscillator, rubber or polyurethane clad and aluminum sleeve have radially been sequentially distributed in every layer from the inside to the outside, has been equipped with rubber or polyurethane cushion between adjacent two layers.Compared with prior art, the present invention significantly improves corrosion resistance, and oscillator is coated among overall structure；It is dissipated by transmitting from top to bottom layer by layer, achievees the effect that significant vibration absorbing low noise；It is not easy to occur to can tolerate intermittent high load capacity pressure, whole service life is long because stacking transposition or lateral deformation that series connection generates.
Description
Technical field
The present invention relates to rail traffic vibration and noise reducing fields, more particularly to point support floating plate track supporting structure.
Background technique
With the fast development of urban track traffic, the ambient vibration problem as caused by urban track traffic also becomes increasingly
It is prominent.Currently, the most common way is to be inserted into elasticity branch between upper track structure and infrastructure in track vibration control
Layer is held, the vibration generated by inertia motion decaying train operation of the upper track structure on elastic bearing layer.Pass through improvement
Floating plate track flexibly supports layer, can effectively reduce vibration caused by driving.
In Specific construction, steel spring floating slab damper rail is the concrete road bed board that will have certain mass and rigidity
It is placed on steel spring vibration isolator, apart from blinding layer top surface 30mm or 40mm, constitutes quality-spring-vibrating isolation system.It is imitated in vibration damping
Can aspect, spring vibration-isolator floating plate track than the effect of rubber bearing formula floating plate track also than get well, steel spring so far
Floating plate railway roadbed has had more than 90 years history, and since cost is higher, it is mainly used for hospital, research institute, museum, music hall
Deng the occasion for having particular/special requirement to vibration and noise reducing.On the other hand, the service life of spring vibration-isolator is usually 5~7 years, and spring structure
Be easy because burn into be difficult to be resistant to intermittent high load capacity pressure, corrosion and generate the damage in structure, cause service life rapid
Subtract.
CN208201509U discloses a kind of butterfly spring floating plate vibration isolator, including top cover, pedestal, the chassis interior
Equipped with mandrel, the mandrel will adjust gasket, butterfly spring concatenation is connected, and the adjustment gasket is located at mandrel close to the one of pedestal
End is equipped with butterfly spring above the adjusting pad piece, is equipped with top cover above the butterfly spring, and the pedestal, top cover pass through the
One clip, the second clip, gum cover connection, and be bolted.Although it can change vibration isolation by changing butterfly spring the piece number
The rigidity of device.But the overlapped in series structure of spring is unfavorable for being used cooperatively with the long-term of steel spring floating slab, is used for a long time and is easy
The twist distortion of spring is caused, and causes structure aging.
Therefore need to design it is a kind of it is at low cost, the service life is long, locally resonant that is corrosion-resistant, can tolerate intermittent high load capacity pressure
Type supporting structure.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of floating plate tracks to use
Locally resonant type supporting structure.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of floating plate track locally resonant type supporting structure, locally resonant type supporting structure are set in foundation structure
Side, locally resonant type supporting structure support floating plate by axial direction, and locally resonant type supporting structure is by identical more
Layer structure is overlapped along axial direction, has radially been sequentially distributed steel oscillator, elastomeric overmold layer and aluminium in every layer from the inside to the outside
Sleeve processed is equipped with rubber spacer between adjacent two layers.
Further, the elastomeric overmold layer is polyurethane material or rubber material.
Further, the top of locally resonant type supporting structure is rubber spacer, and rubber spacer is connected to inside floating plate
Or bottom surface.
Further, the bottom of locally resonant type supporting structure is rubber spacer, and rubber spacer presses in foundation structure
Surface.
Further, gluing connects between the steel oscillator and elastomeric overmold layer, between elastomeric overmold layer and aluminum sleeve
It connects.
Further, the rubber spacer is connected by the single layer structure of gluing mode and two sides, constitutes axial direction
On repeated arrangement structure.
Further, there are 2~6 layers on single layer structure axial direction.
Further, single layer structure in the axial direction with a thickness of 8cm, the diameter of steel oscillator is 22cm, elastomeric overmold layer
With a thickness of 7cm, aluminum sleeve with a thickness of 8cm, rubber spacer with a thickness of 0.5cm.
Further, the outer diameter of the rubber spacer is identical as the outer diameter of aluminum sleeve.
Further, the internal diameter of the rubber spacer is identical as the internal diameter of aluminum sleeve.
Further, the steel oscillator is solid or with a small amount of cavity cylinder bloom.
Further, the elastomeric overmold layer and aluminum sleeve are cylindrical shell structure.
Compared with prior art, the invention has the following advantages that
It is at low cost, the service life is long, it is corrosion-resistant, can tolerate intermittent high load capacity pressure
1) floating plate track in the technical program is with the material that locally resonant type supporting structure uses for steel, rubber and aluminium
Material, overall cost is lower, and the use of local rubber material simultaneously cooperates steel construction and constructed of aluminium, hence it is evident that improves corrosion resistance
Can, oscillator is coated among overall structure, is only used for the top and the bottom exposure of transmitting vibrational energy, but can be by adding
The promotion of the easy realization Corrosion Protection of the mode of coating.
2) locally resonant type supporting structure uses the superposition of multi-layer compound structure in the technical program, and prolongs axial repetition
Connection, in vibrational energy transmittance process, first by rail special delivery to floating plate, then by floating plate bottom by contacting
Steel oscillator be passed to vibration shape supporting structure ontology be divided into side into after the steel oscillator of top layer and distinguish all the way with lower section all the way
It propagates, side dissipates 60% or so by elastomeric overmold layer all the way, continues to be transferred to aluminum sleeve with 40%, aluminum sleeve is easy
In transmitting vibrational energy, dissipation of energy is less, and most of i.e. transfers are to rubber spacer downwards, on the side of rubber spacer
It dissipates totally at.Lower section transfers all the way, it is main rubber spacer is transferred at rubber spacer by steel oscillator to dissipate
60%, remainder continues transmitting downwards.It is dissipated by transmitting from bottom to top layer by layer, so that being finally transmitted in foundation structure
The vibrational energy on surface is only the 5% of initial value hereinafter, achieving the effect that significant vibration absorbing low noise.
3) this kind of multicolumn bluk recombination stacked structure can realize 2~6 layers of stacking, compare spring structure or serial spring
Structure, structural behaviour are stablized, and anti-aging property is excellent, it is not easy to occur because stacking transposition or lateral deformation that series connection generates,
It can tolerate intermittent high load capacity pressure, whole service life is long.
Detailed description of the invention
Fig. 1 is the installation site cross-sectional configuration schematic diagram of locally resonant type supporting structure in the present invention；
Fig. 2 is the configuration schematic diagram of locally resonant type supporting structure in the present invention；
Fig. 3 is that the vibration transmissibility of locally resonant type supporting structure in the present invention calculates finite element model；
Fig. 4 is locally resonant type periodicity supporting course frequency response function figure in the present invention；
Fig. 5 is the dispersion curve figure of locally resonant type periodicity supporting course control effect analysis in the present invention；
Fig. 6 is the frequency response function figure of locally resonant type periodicity supporting course control effect analysis in the present invention.
In figure: 1, floating plate, 2, vibration shape supporting structure ontology, 3, steel oscillator, 4, elastomeric overmold layer, 5, aluminum sleeve, 6,
Rubber spacer, 7, foundation structure.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
Floating plate track locally resonant type supporting structure in the present embodiment, locally resonant type supporting structure are set to basis knot
Structure 7) above, locally resonant type supporting structure supports floating plate 1 by axial direction, and locally resonant type supporting structure is by phase
Same multilayered structure is overlapped along axial direction, has radially been sequentially distributed steel oscillator 3, elastomeric overmold in every layer from the inside to the outside
Layer 4 and aluminum sleeve 5 is equipped with rubber spacer 6 between adjacent two layers.
The connection of steel oscillator 3 and external structure: the steel oscillator 3 in top layer's structure is connected to 1 inside of floating plate or bottom
Face.Steel oscillator 3 in lowest level structure presses on 7 upper surface of foundation structure.Between steel oscillator 3 and elastomeric overmold layer 4, elasticity packet
Gluing connects between coating 4 and aluminum sleeve 5.Rubber spacer 6 is connected by the single layer structure of gluing mode and two sides, constitutes axis
Repeated arrangement structure on direction.
In terms of specific structure: there are 2~6 layers on single layer structure axial direction.Single layer structure in the axial direction with a thickness of
8cm, the diameter of steel oscillator are 22cm, elastomeric overmold layer with a thickness of 7cm, aluminum sleeve with a thickness of 8cm, the thickness of rubber spacer
Degree is 0.5cm, can according to need and carries out size change.The outer diameter of rubber spacer 6 is identical as the outer diameter of aluminum sleeve 5.Rubber
The internal diameter of bed course 6 is identical as the internal diameter of aluminum sleeve 5.
In terms of specific selection: steel oscillator 3 is solid or with a small amount of cavity bloom.The elastomeric overmold layer 4 and aluminium
Sleeve 5 processed is cylindrical shell structure.
In specific work process, vibrational energy is passed to vibration shape supporting structure ontology 2 by the rubber spacer 6 at top first, into
After the steel oscillator 3 for entering top layer, it is divided into side and is propagated respectively all the way with lower section all the way, side is dissipated by elastomeric overmold layer 4 all the way
Fall 60% or so, continues to be transferred to aluminum sleeve 5 with 40%, aluminum sleeve 5 is easy to transmit vibrational energy, dissipation of energy
Less, most of i.e. transfers dissipate totally to rubber spacer 6 in the edge of rubber spacer 6 downwards.Lower section axis all the way
To transmitting, rubber spacer 6 is mainly transferred to by steel oscillator 3 and dissipates 60% at rubber spacer 6, remainder continues downward
Transmitting.It is dissipated by transmitting from bottom to top layer by layer, so that the vibrational energy for being finally transmitted to 7 upper surface of foundation structure is only just
The 5% of initial value is hereinafter, achieve the effect that significant vibration absorbing low noise.
In this example, steel oscillator 3, elastomeric overmold layer 4, aluminum sleeve 5,6 material parameter of rubber spacer are as shown in table 1.
1 material parameter table of table
In view of subway vibration reducing measure is mainly for vertical vibration, locally resonant type periodicity supporting course is One Dimension Periodic knot
Structure, therefore in the vibration transmissibility of analytical cycle supporting course, it is only necessary to apply the excitation of simple harmonic quantity acceleration on the top of structure,
By the vibration transmissibility of the analyzing acceleration response structure of calculating cycle supporting course lower part, periodical supporting course vibration is passed
The finite element model for passing characteristic calculating is as shown in Figure 3.
The acceleration transmissibility of periodical supporting course can indicate are as follows:
In formula, ainFor the acceleration amplitude of top input, aoutFor lower part output acceleration responsive, with transport less than 0
For the index that the effectiveness in vibration suppression of periodical supporting course plays a role, periodical supporting course vibration transmissibility calculated result such as Fig. 4
It is shown.
Figure 4, it is seen that the vibration transmissibility of periodical supporting course is equal in the frequency range of 55Hz to 133Hz
Less than 0, illustrate that the effectiveness in vibration suppression of this range periodically supporting course plays a role, while this frequency range and infinite period
The range of the single order band gap of structure is corresponding, compares Fig. 5 and Fig. 6 it is found that the unlimited week obtained by calculating structure dispersion curve
The single order band gap of phase structure and the vibration decay area by calculating the limit cycle structure that frequency response function obtains are consistent.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (10)
1. a kind of floating plate track locally resonant type supporting structure, which is characterized in that locally resonant type supporting structure is set to base
Above plinth structure (7), locally resonant type supporting structure supports floating plate (1) by axial direction, the bearing of locally resonant type
Structure is overlapped by identical multilayered structure along axial direction, has radially been sequentially distributed steel oscillator in every layer from the inside to the outside
(3), elastomeric overmold layer (4) and aluminum sleeve (5) are equipped with rubber spacer (6) between adjacent two layers.
2. a kind of floating plate track according to claim 1 locally resonant type supporting structure, which is characterized in that described
Elastomeric overmold layer (4) is polyurethane material or rubber material.
3. a kind of floating plate track according to claim 1 locally resonant type supporting structure, which is characterized in that local is total
The top of vibration shape supporting structure is rubber spacer (6), and rubber spacer (6) is connected to floating plate (1) inside or bottom surface.
4. a kind of floating plate track according to claim 1 locally resonant type supporting structure, which is characterized in that local is total
The bottom of vibration shape supporting structure is rubber spacer (6), and rubber spacer (6) presses on foundation structure (7) upper surface.
5. a kind of floating plate track according to claim 1 locally resonant type supporting structure, which is characterized in that described
Gluing is connect between steel oscillator (3) and elastomeric overmold layer (4), between elastomeric overmold layer (4) and aluminum sleeve (5).
6. a kind of floating plate track according to claim 1 locally resonant type supporting structure, which is characterized in that described
Rubber spacer (6) is connected by the single layer structure of gluing mode and two sides, constitutes the repeated arrangement structure on axial direction.
7. a kind of floating plate track according to claim 6 locally resonant type supporting structure, which is characterized in that single layer knot
There are 2~6 layers on structure axial direction.
8. a kind of floating plate track according to claim 6 locally resonant type supporting structure, which is characterized in that single layer knot
Structure in the axial direction with a thickness of 8cm, the diameter of steel oscillator (3) is 22cm, elastomeric overmold layer (4) with a thickness of 7cm, aluminum set
Cylinder (5) with a thickness of 8cm, rubber spacer (6) with a thickness of 0.5cm.
9. a kind of floating plate track according to claim 1 locally resonant type supporting structure, which is characterized in that described
The outer diameter of rubber spacer (6) is identical as the outer diameter of aluminum sleeve (5).
10. a kind of floating plate track according to claim 1 locally resonant type supporting structure, which is characterized in that described
Rubber spacer (6) internal diameter it is identical as the internal diameter of aluminum sleeve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910624905.9A CN110499676A (en) | 2019-07-11 | 2019-07-11 | A kind of floating plate track locally resonant type supporting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910624905.9A CN110499676A (en) | 2019-07-11 | 2019-07-11 | A kind of floating plate track locally resonant type supporting structure |
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| Publication Number | Publication Date |
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| CN110499676A true CN110499676A (en) | 2019-11-26 |
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| CN201910624905.9A Pending CN110499676A (en) | 2019-07-11 | 2019-07-11 | A kind of floating plate track locally resonant type supporting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201982A (en) * | 2021-04-20 | 2021-08-03 | 北京城建设计发展集团股份有限公司 | Vibration reduction method of rail transit structure |
| CN113502694A (en) * | 2021-03-17 | 2021-10-15 | 东南大学 | Split mounting type tunable floating plate track |
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2019
- 2019-07-11 CN CN201910624905.9A patent/CN110499676A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010083734A1 (en) * | 2009-01-22 | 2010-07-29 | 隔而固(青岛)振动控制有限公司 | Built-in vibration isolation device and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113502694A (en) * | 2021-03-17 | 2021-10-15 | 东南大学 | Split mounting type tunable floating plate track |
| CN113201982A (en) * | 2021-04-20 | 2021-08-03 | 北京城建设计发展集团股份有限公司 | Vibration reduction method of rail transit structure |
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