CN106592343A - Strip interface constraint damping track bed for vibration and noise reduction of subway - Google Patents
Strip interface constraint damping track bed for vibration and noise reduction of subway Download PDFInfo
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- CN106592343A CN106592343A CN201710033136.6A CN201710033136A CN106592343A CN 106592343 A CN106592343 A CN 106592343A CN 201710033136 A CN201710033136 A CN 201710033136A CN 106592343 A CN106592343 A CN 106592343A
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- 238000013016 damping Methods 0.000 title claims abstract description 106
- 239000000463 material Substances 0.000 claims abstract description 93
- 239000004567 concrete Substances 0.000 claims abstract description 49
- 229910003460 diamond Inorganic materials 0.000 claims description 33
- 239000010432 diamond Substances 0.000 claims description 33
- 239000000428 dust Substances 0.000 claims description 33
- 239000003822 epoxy resin Substances 0.000 claims description 20
- 229920000647 polyepoxide Polymers 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 229920003226 polyurethane urea Polymers 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 189
- 230000000694 effects Effects 0.000 abstract description 13
- 239000011229 interlayer Substances 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000000452 restraining effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 6
- 229910010271 silicon carbide Inorganic materials 0.000 description 6
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- 238000000576 coating method Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 206010068052 Mosaicism Diseases 0.000 description 1
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- 238000004458 analytical method Methods 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
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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
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/005—Making of concrete parts of the track in situ
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Railway Tracks (AREA)
Abstract
A band interface constraint damping track bed for vibration and noise reduction of a subway comprises a concrete base layer, a constraint layer and a middle layer positioned between the concrete base layer and the constraint layer. The concrete base layer, the constraint layer and the middle layer are strip-shaped interfaces, each strip-shaped interface is composed of a plurality of raised strip units which are arranged in parallel, and strips of two adjacent layers are matched with each other; the middle layer is a plurality of layers of constrained damping layers and consists of a damping material layer I, a hard interlayer and a damping material layer II which are sequentially arranged. Damping material layer I is located the one side that is close to the concrete-based layer, damping material layer II is located the one side that is close to the restraint layer. According to the invention, the restraining interface of the track bed is designed into a strip shape, so that the hidden danger of relative sliding of the track bed is solved, the shearing area is increased, the nonlinear characteristic of the damping material is fully exerted, the shearing energy consumption of the damping material is utilized, the loss factor is improved by 0.3-0.5, and the vibration damping effect is obviously improved.
Description
Technical field
The invention belongs to building field, is related to a kind of railway roadbed vibration and noise reducing structure and preparation method thereof, specifically, it is related to
A kind of band interface combinations structure for being conducive to vibration and noise reducing.
Background technology
In today's society, various vibrations and noise emerge in an endless stream, and keeping away to keep away.However, this environment is long-term
Effect not only affects the physical and mental health of people, also results in structural device fatigue rupture, precision instrument sensitivity because of Long-term Vibration
Decline.Therefore, control vibration, reduction noise have become problem in the urgent need to address.Subway is used as urban track traffic
Important component part, plays more and more important role in the Working Life of people.In order to improve ride quality and
The service life of track and vehicle is improved, also has increasing new technology to occur in terms of the damping noise reduction of track.
At present, the vibration and noise reducing measure applied in subway based on railway roadbed vibration damping, such as floating plate railway roadbed vibration damping and rubber blanket
Railway roadbed vibration damping etc..However, these technologies have following defect：(1) fissipation factor only has 0.05～0.2 or so, and effectiveness in vibration suppression is not
Substantially；(2) service life is short；Because these devices employ the materials such as spring and rubber, volume is with respect to spary coating type damping material
For it is larger, often using several years after, will be because of the aging of the continuous impact of train and material so that under effectiveness in vibration suppression is obvious
Drop；(3) it is also the most important：These technologies can cause the sliding of ballast bed structure and waveform abrasion, and this phenomenon can be anti-
Come over to increase the vibration of structure, bigger impact is caused to the resident of passenger and neighboring buildings, so as to cause subway department continuous
It is connected to masses' complaint；Can usually force relevant unit's large area to remove rail railway roadbed in the case of serious, cause to be difficult to engineering
The loss of appraisal.
In order to solve the above problems, utility model patent ZL201220019831.X discloses that " constrained damping structure subtracts
Shake noise reduction solid concrete roabed ".Vibration and noise reducing solid concrete roabed disclosed in the utility model patent, including concrete road bed and concrete road
Base；It is concrete road bed that visco-elastic damping layer, concrete road bed, way of concrete foundations, viscoplasticity resistance are provided with and way of concrete foundations between
Buddhist nun's layer constitutes restraint layer.The patent process is simple, effect compares other vibration damping modes certain advantage.However, this mode
The great potential safety hazard for existing, that is, growth over time, the long-term impact of train can make railway roadbed produce Relative sliding
Phenomenon.
At present, epoxy resin is mainly used in coating protecting, adhesive, electronic apparatus material, engineering plastics, composite wood
The fields such as material, civil material, are not also applied in the multilayer damping-constraining ballast bed structure of vibration and noise reducing.
The content of the invention
For the problems of existing subway vibration-damping ballast, damping-constraining railway roadbed of the present invention, can effectively prevent
Only train is to the Relative sliding and waveform abrasion caused by the impact of track so as to be subway with more preferable damping capacity
Vibration and noise reducing engineer applied provides theories integration and practical advice.
Technical scheme：The band interface damping-constraining railway roadbed of subway vibration and noise reducing, including concrete base layer, about
Beam layer and intermediate layer positioned there between.12～the 15m of length of the railway roadbed, width is 3～5m.
The concrete base layer, restraint layer and intermediate layer are strip-form interface, and the strip-form interface is by multiple parallel
The raised stripe cell of arrangement is constituted, and the band of adjacent two layers matches each other；The intermediate layer is multilayer damping-constraining layer,
The intermediate layer is made up of the Damping material layer I's, hard interbedded layer and Damping material layer II for arranging successively.The Damping material layer I
Positioned near the side of concrete base layer, the Damping material layer II is located near the side of restraint layer.The Damping material layer
For polyurethane-urea damping material.The shore D hardness of the hard interbedded layer is 64～66.Due to the hardness of hard interbedded layer it is appropriate, so whole
Individual structure is the equal of Two-layer constraint damping structure, thus drastically increases the effect of vibration and noise reducing.
Wherein, in described each stripe cell, the height of projection of band is 90～110mm, the width of band is 300～
400mm, the width between the two neighboring band is 300～400mm.
Wherein, the thickness of the Damping material layer I, hard interbedded layer and Damping material layer II is 1.6～2.5mm；It is described hard
Interlayer is epoxy resin layer；The thickness of the concrete base layer and restraint layer is 0.2～0.25m.The hard interbedded layer and damping
The silicon carbide layer for being embedded in the two surface is provided between material layer I and hard interbedded layer and Damping material layer II, the diamond dust
Quantity is 3～4kg/m2, the particle diameter of the diamond dust is 1.6～2.0mm.Preferably, the thickness in the intermediate layer is 6mm.
The preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, comprises the following steps：
(1) basic unit：The casting concrete basic unit in strip face template, and make its constraint interface be ribbon；
(2) intermediate layer：The damping material of 1.6～2.5mm is sprayed on the concrete base layer that step (1) is obtained, and at it
Appropriate diamond dust is spread before dry tack free；Then the epoxy resin of 1.6～2.5mm is sprayed, spread suitable before its dry tack free
The diamond dust of amount；The last damping material for spraying 1.6～2.5mm again；
(3) restraint layer：It is restraint layer to continue casting concrete on intermediate layer prepared by step (2)；Obtain subway to subtract
Shake the band interface damping-constraining railway roadbed of noise reduction.
Wherein, in epoxy resin layer, part inlay is in Damping material layer for the diamond dust part inlay.The coagulation soil matrix
The thickness of layer and restraint layer is 0.2～0.25m；The Damping material layer is polyurethane-urea damping material.Preferably, institute
The thickness for stating intermediate layer is 6mm.
The method of analog detection effect of vibration and noise reduction：Using the method for ANSYS finite element modellings respectively to tabular interface
Constrained damping structure (utility model patent《The vibration and noise reducing solid concrete roabed of constrained damping structure》Application number
201220019831.X) and ribbon interface constrained damping structure (present invention) carry out model analysis.
The concrete steps of analog detection：It is a kind of eight node units of 3D solid from body unit SOLID186, each
Node has tri- translational degree of freedom of xyz, and material behavior is isotropic, disclosure satisfy that the theoretical requirement of modal strain energy；
Support mode is the constraint of two ends freely-supported；Basic unit, damping layer, constrained layer material parameter are as described in Table 1；The model partition unit that will be set up
Grid, size of mesh opening is set to 0.1.
The parameter list that the ANSYS finite element modellings of table 1 are adopted
Beneficial effects of the present invention：
1st, the present invention is optimized to constraining interface shape, and railway roadbed is constrained into interface into ribbon, on the one hand solves
The hidden danger of railway roadbed Relative sliding, on the other hand increases the specific surface area of structure, that is, the section of shear is increased, so as to more abundant
The non-linear behavior of damping material is played, using the shear energy dissipation of damping material, fissipation factor improves 0.3-0.5, therefore subtracts
Effect of shaking also is significantly improved.
2nd, intermediate layer is designed as multilayer damping-constraining by the present invention, i.e. damping layer-epoxy resin-damping layer, due to epoxy
Resin material is harder, so total is equivalent to Two-layer constraint；Compared with individual layer is constrained, the Two-layer constraint structure of the present invention
The advantage of constrained damping structure can be more played, increases the impact resistance and fatigue resistance of material, sufficiently using damping material
Shear energy dissipation；
3rd, the present invention adds appropriate diamond dust, the shearing between reinforcing material between damping layer and epoxy resin layer
Power, and then make full use of the friction energy-dissipating of material internal；
4th, the intermediate layer thickness that the present invention is adopted is less than 10mm, and volume is relatively small, therefore, possess good anti-train punching
Hit and anti-fatigue performance, so as to be effectively prevented train to the Relative sliding and waveform abrasion caused by the impact of track,
Just overcome the timeliness sex chromosome mosaicism in current engineering.
Description of the drawings
Fig. 1 is the structural representation of ribbon railway roadbed concrete base layer；
Fig. 2 is the interlayer structure schematic diagram of ribbon railway roadbed；
Wherein, 1 is Damping material layer I, and 2 is hard interbedded layer, and 3 is Damping material layer II, and 4 is diamond dust.
Specific embodiment
With reference to embodiment, the present invention is described further.
Embodiment 1：
The band interface damping-constraining railway roadbed of subway vibration and noise reducing, including concrete base layer, restraint layer and positioned at the two
Between intermediate layer.12～the 15m of length of the railway roadbed, width is 3～5m.The concrete base layer, restraint layer and intermediate layer
Strip-form is, and the band of adjacent two layers matches each other；The intermediate layer be multilayer damping-constraining layer, the intermediate layer by according to
The composition of the Damping material layer I, hard interbedded layer and Damping material layer II of secondary arrangement.The Damping material layer I is located near concrete
The side of basic unit, the Damping material layer II is located near the side of restraint layer.The Damping material layer is polyurethane-urea damping
Material.The hard interbedded layer is the epoxy resin layer that shore D hardness is 65.
Wherein, the strip-form interface is made up of multiple parallel arrangements and bottom surface stripe cell in the same plane,
In described each stripe cell, the height of projection of band is 90, and the width of band is 320mm, between the two neighboring band
Width be 340mm.The thickness of the Damping material layer I, hard interbedded layer and Damping material layer II is 2.0mm；The concrete
The thickness of basic unit and restraint layer is 0.2m.The hard interbedded layer and Damping material layer I and hard interbedded layer and Damping material layer II it
Between be provided with the silicon carbide layer for being embedded in the two surface, the quantity of the diamond dust is 3.0kg/m2, the particle diameter of the diamond dust is
2.0mm。
The preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, comprises the following steps：
(1) basic unit：The casting concrete basic unit in strip face template, and make its constraint interface be ribbon；It is described mixed
The thickness of solidifying soil matrix layer is 0.2m；
(2) intermediate layer：The damping material of 2.0mm is sprayed on the concrete base layer that step (1) is obtained, and it is dry on its surface
Appropriate diamond dust was spread before dry；Then the epoxy resin of 2.0mm is sprayed, appropriate diamond dust was spread before its dry tack free；
The last damping material for spraying 2.0mm again；, in epoxy resin layer, part inlay is in damping material for the diamond dust part inlay
Layer.The Damping material layer is polyurethane-urea damping material.
(3) restraint layer：It is restraint layer to continue casting concrete on intermediate layer prepared by step (2)；The restraint layer
Thickness is 0.2m；Obtain the band interface damping-constraining railway roadbed of subway vibration and noise reducing.
Detection is simulated to the effect of vibration and noise reduction of flat structure and the strip-form ballast bed structure of the present embodiment, as a result
As shown in table 2.
The each order mode state numerical computations of table 2 embodiment, 1 two kinds of structures
Embodiment 2：
As different from Example 1, the band interface damping-constraining railway roadbed of subway vibration and noise reducing, the hard interbedded layer is shore
D hardness is 64 epoxy resin layer.The height of projection of band is 100mm, and the width of band is 360mm, the two neighboring bar
Width between band is 380mm.Wherein, the thickness of the Damping material layer I, hard interbedded layer and Damping material layer II is 1.6mm；
The thickness of the concrete base layer and restraint layer is 0.25m.The hard interbedded layer and Damping material layer I and hard interbedded layer and damping
The silicon carbide layer for being embedded in the two surface is provided between material layer II, the quantity of the diamond dust is 4.0kg/m2, the Buddha's warrior attendant
The particle diameter of sand is 1.6mm.
As different from Example 1, the preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, including with
Lower step：
The preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, comprises the following steps：
(1) basic unit：The thickness of the concrete base layer is 0.25m；
(2) intermediate layer：The damping material of 1.6mm is sprayed on the concrete base layer that step (1) is obtained, and it is dry on its surface
Appropriate diamond dust was spread before dry；Then the epoxy resin of 1.6mm is sprayed, appropriate diamond dust was spread before its dry tack free；
The last damping material for spraying 1.6mm again.
(3) restraint layer：The thickness of the restraint layer is 0.25m.
Detection is simulated to the effect of vibration and noise reduction of flat structure and the strip-form ballast bed structure of the present embodiment, as a result
As shown in table 3.
The each order mode state numerical computations of table 3 embodiment, 2 two kinds of structures
Embodiment 3：
As different from Example 1, the band interface damping-constraining railway roadbed of subway vibration and noise reducing, the hard interbedded layer is shore
D hardness is 66 epoxy resin layer.The height of projection of band is 110mm, and the width of band is 400mm, the two neighboring bar
Width between band is 300mm.Wherein, the thickness of the Damping material layer I, hard interbedded layer and Damping material layer II is 2.5mm；
The thickness of the concrete base layer and restraint layer is 0.22m.The hard interbedded layer and Damping material layer I and hard interbedded layer and damping
The silicon carbide layer for being embedded in the two surface is provided between material layer II, the quantity of the diamond dust is 3.5kg/m2, the Buddha's warrior attendant
The particle diameter of sand is 1.8mm.
As different from Example 1, the preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, including with
Lower step：
The preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, comprises the following steps：
(1) basic unit：The thickness of the concrete base layer is 0.22m；
(2) intermediate layer：The damping material of 2.5mm is sprayed on the concrete base layer that step (1) is obtained, and it is dry on its surface
Appropriate diamond dust was spread before dry；Then the epoxy resin of 2.5mm is sprayed, appropriate diamond dust was spread before its dry tack free；
The last damping material for spraying 2.5mm again.
(3) restraint layer：The thickness of the restraint layer is 0.22m.
Detection is simulated to the effect of vibration and noise reduction of flat structure and the strip-form ballast bed structure of the present embodiment, as a result
As shown in table 4.
The each order mode state numerical computations of table 4 embodiment, 3 two kinds of structures
Embodiment 4：
As different from Example 1, the band interface damping-constraining railway roadbed of subway vibration and noise reducing, the hard interbedded layer is shore
D hardness is 65 epoxy resin layer.The height of projection of band is 105mm, and the width of band is 300mm, the two neighboring bar
Width between band is 350mm.Wherein, the thickness of the Damping material layer I is 1.8mm, and the thickness of the hard interbedded layer is 2.0m,
The thickness of the Damping material layer II is 2.2mm；The thickness of the concrete base layer and restraint layer is 0.20m.The hard folder
The silicon carbide layer for being embedded in the two surface is provided between layer and Damping material layer I and hard interbedded layer and Damping material layer II, it is described
The quantity of diamond dust is 3.3kg/m2, the particle diameter of the diamond dust is 1.9mm.
As different from Example 1, the preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, including with
Lower step：
The preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, comprises the following steps：
(1) basic unit：The thickness of the concrete base layer is 0.20m；
(2) intermediate layer：The damping material of 1.8mm is sprayed on the concrete base layer that step (1) is obtained, and it is dry on its surface
Appropriate diamond dust was spread before dry；Then the epoxy resin of 2.0mm is sprayed, appropriate diamond dust was spread before its dry tack free；
The last damping material for spraying 2.2mm again.
(3) restraint layer：The thickness of the restraint layer is 0.20m.
Detection is simulated to the effect of vibration and noise reduction of flat structure and the strip-form ballast bed structure of the present embodiment, as a result
As shown in table 5.
The each order mode state numerical computations of table 5 embodiment, 4 two kinds of structures
Embodiment 5：
As different from Example 1, the band interface damping-constraining railway roadbed of subway vibration and noise reducing, the hard interbedded layer is shore
D hardness is 65 epoxy resin layer.The height of projection of band is 95mm, and the width of band is 300mm, the two neighboring band
Between width be 400mm.Wherein, the thickness of the Damping material layer I is 2.2mm, and the thickness of the hard interbedded layer is 2.0m, institute
The thickness for stating Damping material layer II is 1.8mm；The thickness of the concrete base layer and restraint layer is 0.25m.The hard interbedded layer
The silicon carbide layer for being embedded in the two surface, the gold are provided between Damping material layer I and hard interbedded layer and Damping material layer II
The quantity of emery is 3.7kg/m2, the particle diameter of the diamond dust is 1.7mm.
As different from Example 1, the preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, including with
Lower step：
The preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, comprises the following steps：
(1) basic unit：The thickness of the concrete base layer is 0.25m；
(2) intermediate layer：The damping material of 2.2mm is sprayed on the concrete base layer that step (1) is obtained, and it is dry on its surface
Appropriate diamond dust was spread before dry；Then the epoxy resin of 2.0mm is sprayed, appropriate diamond dust was spread before its dry tack free；
The last damping material for spraying 1.8mm again.
(3) restraint layer：The thickness of the restraint layer is 0.25m.
Detection is simulated to the effect of vibration and noise reduction of flat structure and the strip-form ballast bed structure of the present embodiment, as a result
As shown in table 6.
The each order mode state numerical computations of table 6 embodiment, 5 two kinds of structures
Data analysis in table 2～6 is compared, we can obtain drawing a conclusion：(1) flat structure and belt structure
The intrinsic frequency of first five rank is identical with fissipation factor variation tendency, and each rank intrinsic frequency of belt structure generally compares flat board
Type structure is big, this is because the gross thickness of two kinds of structures is identical, and the density of standard mortar is the twice of intermediate layer material density
Many, the quality for causing belt structure compares that flat structure is little, and illustrating the gross mass of structure can affect the intrinsic frequency of structure
Rate.(2) each rank fissipation factor of belt structure is obvious bigger by 0.25 or so than plate, is primarily due to belt structure
Specific surface area increases, and can more make full use of the shear energy dissipation of material, the effect of the Two-layer constraint structure in intermediate layer diamond dust in addition
Make the damping capacity of structure more preferably, illustrating the effect of increase, Two-layer constraint and the diamond dust of specific surface area can effectively improve structure
Damping capacity.(3) second order fissipation factor is substantially big than single order fissipation factor, and difference 0.25 or so illustrates structure in second order
Shear energy dissipation is damped under vibration level more.
According to above-mentioned test result, band interface damping-constraining railway roadbed of the present invention is illustrated, based on rational structure
Design, compared with existing flat structure railway roadbed, Quality Down reduces the deadweight of railway roadbed；Specific surface area increases, band interface
Damping-constraining railway roadbed energy dissipation capacity increases, and structural vibration reduces, it is achieved that good effect of vibration and noise reduction.
Claims (10)
1. the band interface damping-constraining railway roadbed of subway vibration and noise reducing, including concrete base layer, restraint layer and positioned at the two it
Between intermediate layer；It is characterized in that：The concrete base layer, restraint layer and intermediate layer are band interface, the band interface
It is made up of the raised stripe cell of multiple parallel arrangements, and the band of adjacent two layers matches each other；The intermediate layer is multilayer
Restriction damping layer, the intermediate layer is made up of the Damping material layer I's, hard interbedded layer and Damping material layer II for arranging successively；It is described
Damping material layer I is located near the side of concrete base layer, and the Damping material layer II is located near the side of restraint layer；It is described
The shore D hardness of hard interbedded layer is 64～66.
2. the band interface damping-constraining railway roadbed of subway vibration and noise reducing according to claim 1, it is characterised in that：The resistance
The thickness of damping material layer I, hard interbedded layer and Damping material layer II is 1.6～2.5mm；The hard interbedded layer is epoxy resin layer；Institute
The thickness for stating concrete base layer and restraint layer is 0.2～0.25m.
3. the band interface damping-constraining railway roadbed of subway vibration and noise reducing according to claim 1 and 2, it is characterised in that：Institute
State and the diamond dust for being embedded in the two surface is provided between hard interbedded layer and Damping material layer I and hard interbedded layer and Damping material layer II
Layer, the quantity of the diamond dust is 3～4kg/m2, the particle diameter of the diamond dust is 1.6～2.0mm.
4. the band interface damping-constraining railway roadbed of subway vibration and noise reducing according to claim 3, it is characterised in that：It is described every
In individual stripe cell, the height of projection of band is 90～110mm, and the width of band is 300～400mm, the two neighboring bar
Width between band is 30～400mm.
5. the band interface damping-constraining railway roadbed of subway vibration and noise reducing according to claim 3, it is characterised in that：The resistance
Damping material layer is polyurethane-urea damping material.
6. the band interface damping-constraining railway roadbed of subway vibration and noise reducing according to claim 3, it is characterised in that：In described
The thickness of interbed is 6mm.
7. the preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing, it is characterised in that：Comprise the following steps：
(1) basic unit：The casting concrete basic unit in strip face template, and make its constraint interface be strip-form interface；
(2) intermediate layer：The damping material of 1.6～2.5mm is sprayed on the concrete base layer that step (1) is obtained, and on its surface
Appropriate diamond dust is spread before drying；Then the epoxy resin of 1.6～2.5mm is sprayed, spread appropriate before its dry tack free
Diamond dust；The last damping material for spraying 1.6～2.5mm again；
(3) restraint layer：It is restraint layer to continue casting concrete on intermediate layer prepared by step (2).
8. the preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing according to claim 7, its feature
It is：In described each stripe cell, the height of projection of band is 90～110mm, and the width of band is 300～400mm, adjacent
Width between two bands is 300～400mm.
9. the preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing according to claim 7, its feature
It is：, in epoxy resin layer, part inlay is in Damping material layer for the diamond dust part inlay.
10. the preparation method of the band interface damping-constraining railway roadbed of subway vibration and noise reducing according to claim 7, its feature
It is：The thickness of the concrete base layer and restraint layer is 0.2～0.25m；The Damping material layer is polyurethane-urea damping
Material.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998046840A1 (en) * | 1997-04-14 | 1998-10-22 | Gfi-Gesellschaft Für Industrieförderung Mbh | System for combining elastic material with unhardened concrete |
| EP1321577A2 (en) * | 2001-11-14 | 2003-06-25 | FIP INDUSTRIALE S.p.A. | Under-ballast damping device for railroads |
| DE102006013851A1 (en) * | 2006-03-23 | 2007-09-27 | Db Netz Ag | Method for vibration damping of rail track onto an elastomer base layer and with ballast layers between elastomer layers |
| CN202509337U (en) * | 2012-01-17 | 2012-10-31 | 青岛市地下铁道公司 | Vibration-damping noise-reducing integral ballast bed with constrained damping structure |
| CN106012695A (en) * | 2016-06-24 | 2016-10-12 | 北京交通大学 | Prefabricated elastic track bed structure with capacity of energy absorption |
-
2017
- 2017-01-18 CN CN201710033136.6A patent/CN106592343B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998046840A1 (en) * | 1997-04-14 | 1998-10-22 | Gfi-Gesellschaft Für Industrieförderung Mbh | System for combining elastic material with unhardened concrete |
| EP1321577A2 (en) * | 2001-11-14 | 2003-06-25 | FIP INDUSTRIALE S.p.A. | Under-ballast damping device for railroads |
| DE102006013851A1 (en) * | 2006-03-23 | 2007-09-27 | Db Netz Ag | Method for vibration damping of rail track onto an elastomer base layer and with ballast layers between elastomer layers |
| CN202509337U (en) * | 2012-01-17 | 2012-10-31 | 青岛市地下铁道公司 | Vibration-damping noise-reducing integral ballast bed with constrained damping structure |
| CN106012695A (en) * | 2016-06-24 | 2016-10-12 | 北京交通大学 | Prefabricated elastic track bed structure with capacity of energy absorption |
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| CN106592343B (en) | 2018-02-06 |
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