CN206090347U - Damping formula railway metallic sound protective screen and composite set thereof - Google Patents
Damping formula railway metallic sound protective screen and composite set thereof Download PDFInfo
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- CN206090347U CN206090347U CN201621020218.4U CN201621020218U CN206090347U CN 206090347 U CN206090347 U CN 206090347U CN 201621020218 U CN201621020218 U CN 201621020218U CN 206090347 U CN206090347 U CN 206090347U
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0011—Plank-like elements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model relates to an elasticity damping formula railway metallic sound protective screen and composite set thereof belongs to vibration and noise abatement field in the environmental protection field. This metallic sound protective screen includes mainly by the enhancement mode panel, the elastic construction, sound -absorbing material layer, the sound barrier cell board that backplate and aluminum metal alloy frame frame are constituteed, the cell board is from openly be the enhancement mode panel to the back in proper order, the elastic construction, sound -absorbing material layer and backplate, a panel, sound -absorbing material layer and backplate cartridge are in the trench of aluminum metal alloy frame frame, set up the socket joint groove of elastic construction between panel and sound -absorbing material layer and on the frame of the aluminum metal alloy frame between sound -absorbing material layer and the backplate, the elastic construction cartridge is in the socket joint groove. It is stronger that the ability of making an uproar falls in the elastic construction, and the impact load who makes acoustic barrier structure bear subtracts and carries and be mild, greatly improves the anti fatigue life of structure, adapts to high -speed railway's roadability very much, has changed the utilization of existing high -speed railway sound barrier system completely and has improved the passive mode of processing that structural stiffness resisted arteries and veins dynamic load.
Description
Technical field
This utility model is related to a kind of novel railway metal sound barrier and combinations thereof device, and in particular to a kind of elastic damping
Formula railway metal sound barrier and combinations thereof device, it is adaptable to each speed class railway, is particularly well-suited to high-speed railway.The elasticity hinders
Damping characteristic dissipation energy of Buddhist nun's formula railway metal sound barrier using elastomeric material, improves the anti-fluctuating load energy of railway sound barrier
Power and safety of structure, belong to the vibration in field of environment protection and noise abatement field.
Background technology
The high-speed railway speed of service is fast, and sound barrier distance line center is relatively nearly (especially on bridge), and sound barrier surface is received
It is larger to train pneumatic load；Under the conditions of train speed 350km/h, fluctuating load of the action of train wind on sound barrier is near
1000Pa (actual measurement, different automobile types have slightly change).Conventional sound barrier can not enter to the train pneumatic load for acting on its surface
Row decay, huge pneumatic load can cause waving and rocking for sound barrier.After longtime running, easily occur being coupled loosening, very
To being situation that structural deterioration comes off, traffic safety is constituted a threat to.
The current high-speed rail sound barrier of China, its Design Mechanism are to improve the rigidity of structure to adapt to high load and improve cell board
Natural frequency, it is to avoid the generation of resonance；But due to making uncontrollable, the potential very big potential safety hazard with installation quality, having must
Brand-new design is technically carried out, and the anti-fluctuating load ability and structure of railway sound barrier are improved using elastic damping technology
Safety.
Utility model content
As the actual operating data of high ferro is gathered, inventor has to the characteristic of pulsating force and more fully understands；At present
The design method of sound barrier of high-speed railway not science, security of system cannot be ensured, be improved by improving design amount of redundancy
Safety neither science is also uneconomical；Meanwhile, the anti-acoustic capability of existing high-speed rail sound barrier is also treated further to optimize lifting.For this purpose,
This utility model provides a kind of brand-new method for designing.
The technology introduced from Germany is actually solved anti-weight bearing power, is reduced in material using the method for improving the rigidity of structure
Portion's stress and stress amplitude further improve anti-fatigue life, and inherently fluctuating load is not decayed；This utility model is carried
Go out another kind of method for designing for effectively weakening fluctuating load transmission, reduce pulsating force and be delivered to sound barrier housing and steel column
Load.
Elastic damping formula railway metal sound barrier of the present utility model, its characteristics of principle are special using the damping of elastomeric material
Property dissipation energy, architectural feature is to constitute board plug type sound barrier unit using the panel of large opening rate, aluminium alloy extrusions and backboard
Plate.
A kind of elastic damping formula railway metal sound barrier, including mainly by enhancement mode panel, elastic construction, sound-absorbing material
The acoustic barrier unit board of the compositions such as layer, backboard and aluminum alloy frame, described acoustic barrier unit board are followed successively by from front to the back side
Enhancement mode panel, elastic construction, sound-absorbing material layer and backboard, described panel, sound-absorbing material layer and backboard are inserted into aluminium alloy
In the groove position of framework, bullet is set on the aluminum alloy frame between panel and sound-absorbing material layer and between sound-absorbing material layer and backboard
The socket joint groove of property structure, described elastic construction are inserted in socket joint groove.
The upper and lower edge of described enhancement mode panel and backboard is provided with the groove of (i.e. inner side) backward, elastic construction
Socket joint groove be inserted in described groove；Described elastic construction contact with enhancement mode panel or backboard or close to.
Described enhancement mode panel is the punching panel of percent opening 47% (Conventional open-pore rate is 22%), and pass is rectangle,
The material of the large opening rate panel includes but is not limited to aluminium alloy plate, other metals or nonmetallic etc..Described enhancement mode face
Plate is the punching panel that enhancement process is carried out using calendering or welding reinforcement method.
Using elastomeric material as energy-dissipating components, described elastic construction is used but is not limited to weather-proof this utility model
The excellent EPDM bipeltate bar of property.
Described sound-absorbing material layer includes the enhanced grid of sound-absorbing material and sound-absorbing material both sides (front and back), material
For aluminium alloy extrusions or through antiseptic other materials.
Described sound-absorbing material layer is used but is not limited to rock wool as sound-absorbing material, can also be sent out using glass cotton, macromolecule
Foam material or other sound-absorbing materials, thickness are 50～80mm；And enhancement process is carried out using metallic grid.
Described backboard adopts metal or nonmetal plate, such as aluminum alloy plate materials, cement plate etc., as fabric backplanes.
Aluminum alloy plate materials improve rigidity using the mode such as calendering reinforcement mode or welding sinew adding strip.
Described aluminum alloy frame is mainly made up of girder, Os Draconis and end socket, upper girder section bar, lower girder section bar and both sides
Os Draconis (contain middle part and termination) section bar forming closed structure, end socket section bar is installed in end corner, and inserts closed sebific duct.
Above-mentioned aluminum alloy frame supplementary material is sebific duct or decoupler between closed sebific duct and plate.Closed sebific duct is pacified for system
The resilient support between cell board and steel column is realized in dress；Between plate, sebific duct is used for elasticity mutual when cell board lamination is used
Isolation.
The socket joint groove of sebific duct between plate is also set up on the upper girder section bar of described aluminum alloy frame and/or lower girder section bar,
Between described plate, sebific duct is inserted in described socket joint groove.
Decoupler is also installed in the bottom of described aluminum alloy frame, and decoupler is also rubber, in installing for system
Transmission of the isolation vibration to cell board；In the prefabricated socket joint groove of decoupler insertion lower girder section bar.
With upper-part using plug design is held, can be inserted in the socket joint groove of corresponding position.
Described girder, Os Draconis and end socket are used but are not limited to aluminium alloy extrusions, steel, used as stress main structure.Make
When, first by a girder section bar and Os Draconis (containing middle part and termination) section combination into an open-type framework；To process through reinforcement
Sound-absorbing material and enhanced grid insertion correspondence position；Then by another erection of main beam to frame openings side, constitute closed
Structure；Elastic construction is inserted in the corresponding position of girder section bar；Enhancement mode panel and backboard are inserted from end respectively；In end four
Upper cover section bar is installed at angle, and inserts closed sebific duct.A kind of elastic damping formula railway metal sound barrier combination unit, by two with
On elastic damping formula railway metallic sound barrier unit board composition, glue between the top insertion plate of the cell board in middle and bottom
Pipe, the bottom insertion decoupling device assembly of the cell board in bottom；Cell board using stacked on top Combination of Methods, upper and lower plates it
Between using sebific duct isolation between plate, prevent from mutually wiping the transmission touched and vibrate.
When train head passes through, fluctuating load peak value is applied on the panel of quick condition, the elasticity of panel back
Structure will appear from deformation, has buffered pulsation energy, has been then passed to aluminum alloy frame；After headstock passes through, in the presence of elasticity,
Panel resets；Peak energy is partially absorbed in elastic deformation, and the energy for passing to aluminum alloy frame and steel column is very big
Weaken；Backboard is not subject to load substantially in servo-actuated state.
When the tailstock passes through, will appear from negative sense fluctuating load, backboard bears pressure reduction load, occur side inside to pressure,
By the energy attenuation of elastomeric material, the negative sense load for passing to aluminum alloy frame is reduced；After vehicle passes through, backboard elasticity is returned
It is multiple.
In above procedure, sound-absorbing material is also by receiving portion sectors dynamic load, as the choked flow of punching panel is acted on, internal pressure
Power is relatively low, by strengthening processing.
Fig. 1-1 and Fig. 1-2 can characterize effect and the energy transmission contrast that damping is produced, Fig. 1-1：Nonelastic structure；Figure
1-2：Flexible structure；Accompanying drawing is only illustrated, and in figure, data do not represent specific operational factor, under the different speeds of service has difference
It is different.
This utility model is the sound absorption efficiency for improving sound barrier, and using the punching panel of large opening rate, such major part is made an uproar
Acoustic energy will be projected directly at sound absorption function layer, improve acoustic absorptivity and noise reduction coefficient；Meanwhile, for the energy for avoiding panel from carrying
Amount is directly delivered to main structure section bar beam body, and design allows which to be in suspended state, and such load will be passed on elastic construction,
Form the transmittance process of load energy → panel → elastic construction → structural beams → steel column → base structure；Under negative pressure state：
Load energy → backboard → elastic construction → structural beams → steel column → base structure.
As described above, this utility model realizes effective attenuation of the energy in transmittance process using elastomeric material, reduce
Requirement to structure, and then improve safety and the life-span of system；Effective absorption area is improved fully, so as to improve noise reduction
Efficiency.
Elastic damping formula railway metal sound barrier of the present utility model, using the property of energy dissipation of elastomeric material, discharges
With weaken bullet train by when the fluctuating load that drastically compressed and produced due to air；Elastomeric material is on the one hand in deformation
Absorb in journey and consume pulsation mechanical energy, while material deformation process provides the longer time for the release of air pressure of pulsing, so as to
The energy for being delivered to sound barrier main structure is quickly reduced；This method for designing make the impact load off-load that noise barrier structure bears and
Gently, the Anti-Fatigue life-span is greatly enhanced, the operation characteristic of high-speed railway is especially adapted to, is changed existing high ferro sound completely
Barrier system resists the passive processing mode of fluctuating load using the rigidity of structure is improved.
This utility model is described further below by the drawings and specific embodiments, but is not meant to this reality
With the restriction of novel protected scope.
Description of the drawings
Fig. 1-1 and Fig. 1-2 are energy feature comparison of wave shape figures, Fig. 1-1：Nonelastic structure；Fig. 1-2：Flexible structure；
Fig. 2 is the reverberation chamber acoustic absorptivity of this utility model actual measurement；
Fig. 3 is this utility model main structure view；
Fig. 4 is this utility model section of structure；
Fig. 5 is structure chart between this utility model plate.
Main Reference Numerals explanation：
Shock-absorbing sebific duct between 1 rubber pange elastic strip, 2 plate
3 punching panel, 4 keel section (two ends+centre)
5 enhanced grids (front+rear) 6 sound-absorbing materials
7 backboard, 8 girder section bar (upper+under)
9 decouplers (plate body is used at bottom)
Specific embodiment
As shown in Figure 3 and Figure 4, elastic damping formula railway metal sound barrier of the present utility model, its cell board mainly include
Punching panel 3, elastic damping structure -- rubber pange elastic strip 1, sound-absorbing material 6, enhanced grid 5, backboard 7 and aluminum alloy frame
Deng, be followed successively by from front to the back side punching panel 3, rubber pange elastic strip 1, enhanced grid 5, sound-absorbing material 6, enhanced grid 5,
Rubber pange elastic strip 1 and backboard 7, punching panel 3, sound-absorbing material 6 and backboard 7 are inserted in the groove position of aluminum alloy frame,
Rubber pange elasticity is set on the aluminum alloy frame between punching panel 3 and sound-absorbing material 6 and between sound-absorbing material 6 and backboard 7
The socket joint groove of bar 1, in the insertion socket joint groove of rubber pange elastic strip 1.The upper and lower edge of punching panel 3 and backboard 7 be provided with to
The groove of (i.e. inner side) afterwards, the socket joint groove of rubber pange elastic strip 1 are inserted in above-mentioned groove.
Panel of the punching panel 3 for large opening rate, percent opening is 47%, and the material of panel is aluminium alloy plate, and pass is square
Shape, improves rigidity using calendering reinforcement mode, may also be employed welding the modes such as sinew adding strip.
Rubber pange elastic strip 1 is elastic construction, is formed using the excellent ethylene propylene diene rubber foaming of weatherability, installation side
Formula is draw-in groove socket joint.Rubber pange elastic strip 1 contact with punching panel 3 or backboard 7 or close to.
Sound-absorbing material layer 6 adopts rock wool, and glass cotton, high molecular foam material or other sound-absorbing materials, thickness may also be employed
For 50～80mm；Enhanced grid 5 is used before and after sound-absorbing material.
7 material of backboard is aluminum alloy plate materials, improves rigidity using calendering reinforcement mode, may also be employed welding the side such as sinew adding strip
Formula.
Aluminum alloy frame is mainly made up of girder section bar 8, keel section 4, end socket, the dragon of upper and lower girder section bar 8 and both sides
Bone section bar 4 (containing middle part and termination) forming closed structure, installs end socket section bar in end corner, and inserts closed sebific duct.Upper,
Lower girder, Os Draconis and end socket are using aluminium alloy extrusions as stress main structure.
The socket joint groove of shock-absorbing sebific duct 2 between plate, plate are also set up on the upper girder section bar of aluminum alloy frame and/or lower girder section bar
Between shock-absorbing sebific duct 2 insert the socket joint groove in.Between plate, shock-absorbing sebific duct 2 is used for elastomeric isolation mutual when cell board lamination is used.
When using when unit plate body is in bottom, decoupler 9 is also installed in the bottom of aluminum alloy frame, under aluminum alloy frame
9 socket joint groove of decoupler is set on girder section bar 8, decoupler 9 is inserted in the prefabricated socket joint groove of lower girder section bar 8.
Related components are manufactured by this utility model design drawing, is assembled in the following order：
1) by a girder section bar+Os Draconis (containing middle part and termination) section combination into an open-type framework；
2) it is overlapped into one by 5 order of enhanced grid 5+ sound-absorbing material 6+ enhanced grids successively；
3) said modules are inserted in the mounting groove being made up of adjacent keel section 4；
4) by another erection of main beam to frame openings side, constitute enclosed construction；
5) rubber pange elastic strip 1 is inserted in 8 corresponding position of girder section bar；
6) punching panel 3 and backboard 7 are inserted from end according to installation diagram respectively；
7) upper cover section bar is installed in end corner, and inserts closed shock-absorbing sebific duct 2.
Elastic damping formula railway metallic sound can be constituted by plural elastic damping formula railway metallic sound barrier unit board
Barrier is combined the unit.
In sound barrier application combination：
1) cell board in bottom, shock-absorbing sebific duct 2 between top insertion plate, bottom insertion 9 component of decoupler；
2) cell board in middle part, shock-absorbing sebific duct 2 between top insertion plate；
3) cell board in top, is not required to shock-absorbing sebific duct 2 and decoupler 9 between installing plate.
Combination of Methods of the cell board using stacked on top, is isolated using shock-absorbing sebific duct 2 between plate between upper and lower plates, is prevented mutually
The transmission that wiping is touched and vibrated.
This utility model can carry out effective attenuation to fluctuating load peak value, and its effect is shown in Fig. 1-1 and Fig. 1-2；As height is opened
Porosity provides bigger effective absorption area, and the function of sound-absorbing material obtains the performance of maximum, can obtain the volume of 1～2dB (A)
Outer insertion loss.
As shown in Fig. 2 be the reverberation chamber acoustic absorptivity of this utility model actual measurement, comprising the comparison with conventional sound barrier in figure
Curve.This utility model sound barrier acoustic absorptivity NRC is 1.02, and conventional sound barrier acoustic absorptivity NRC is 0.81, it can be seen that this
The sound barrier acoustically effective of utility model is significantly better than conventional sound barrier.
Metal sound barrier of the present utility model mainly include enhancement mode panel, elastic damping structure sheaf, sound-absorbing material layer and
Enhanced grid, enhancement mode backboard and aluminum alloy frame composition acoustic barrier unit board, acoustic barrier unit board from front to the back side according to
It is secondary for punching panel+rubber pange elastic strip+enhanced grid+sound-absorbing material+enhanced grid+rubber pange elastic strip+backboard.This
The method for designing of utility model makes the impact load off-load that noise barrier structure bears and gentle, is greatly enhanced the Anti-Fatigue longevity
Life, especially adapts to the operation characteristic of high-speed railway, change completely existing high-speed rail sound barrier system using improve the rigidity of structure come
The passive processing mode of opposing fluctuating load；The elastic construction that this utility model is adopted has excellent vibration absorption, matches somebody with somebody
The sound-absorbing material of the punching panel and high acoustic absorption coefficient of large opening rate is closed, the insertion loss of sound barrier is improved, noise reduction capability is more
By force.
Claims (10)
1. a kind of elastic damping formula railway metal sound barrier, it is characterised in that：Including mainly by enhancement mode panel, elastic construction,
The acoustic barrier unit board of sound-absorbing material layer, backboard and aluminum alloy frame composition, described acoustic barrier unit board is from front to the back side
It is followed successively by enhancement mode panel, elastic construction, sound-absorbing material layer and backboard, described panel, sound-absorbing material layer and backboard are inserted into
In the groove position of aluminum alloy frame, on the aluminum alloy frame between panel and sound-absorbing material layer and between sound-absorbing material layer and backboard
The socket joint groove of elastic construction is set, and described elastic construction is inserted in socket joint groove.
2. elastic damping formula railway metal sound barrier according to claim 1, it is characterised in that：Described enhancement mode panel
Groove backward is respectively provided with the upper and lower edge of backboard, the socket joint groove of elastic construction is inserted in described groove, described bullet
Property structure contact with enhancement mode panel or backboard or close to.
3. elastic damping formula railway metal sound barrier according to claim 1, it is characterised in that：Described enhancement mode panel
For the punching panel of percent opening 47%；Described elastic construction is EPDM bipeltate bar.
4. elastic damping formula railway metal sound barrier according to claim 1, it is characterised in that：Described sound-absorbing material layer
Including sound-absorbing material and the enhanced grid of sound-absorbing material both sides, described sound-absorbing material is rock wool, glass cotton or macromolecule foaming
Material, thickness are 50～80mm.
5. elastic damping formula railway metal sound barrier according to claim 1, it is characterised in that：Described enhancement mode panel
It is to carry out the metal or nonmetal plate of enhancement process using rolling or weld reinforcement method with backboard.
6. elastic damping formula railway metal sound barrier according to claim 5, it is characterised in that：Described enhancement mode panel
It is aluminum alloy plate materials with backboard.
7. elastic damping formula railway metal sound barrier according to claim 1, it is characterised in that：Described aluminum alloy frame
Mainly it is made up of girder, Os Draconis and end socket, the keel section forming closed knot of upper girder section bar, lower girder section bar and both sides
Structure, installs end socket section bar in end corner, and inserts closed sebific duct.
8. elastic damping formula railway metal sound barrier according to claim 7, it is characterised in that：Described aluminum alloy frame
Upper girder section bar and/or lower girder section bar on also set up the socket joint groove of sebific duct between plate, between described plate, sebific duct is inserted in described
In socket joint groove.
9. elastic damping formula railway metal sound barrier according to claim 7, it is characterised in that：Described aluminum alloy frame
Bottom decoupler is also installed, in the prefabricated socket joint groove of described decoupler insertion lower girder section bar.
10. a kind of elastic damping formula railway metal sound barrier is combined the unit, it is characterised in that：By two or more claim 1-9
Any one of elastic damping formula railway metal sound barrier composition, the top insertion plate of the cell board in middle and bottom
Between sebific duct, the cell board in bottom bottom insertion decoupling device assembly；Combination of Methods of the cell board using stacked on top.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016102856504 | 2016-04-29 | ||
| CN201610285650.4A CN105755974A (en) | 2016-04-29 | 2016-04-29 | Damping type railway metal sound barrier with high load resistance and high sound absorption |
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| CN206090347U true CN206090347U (en) | 2017-04-12 |
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| CN201610285650.4A Pending CN105755974A (en) | 2016-04-29 | 2016-04-29 | Damping type railway metal sound barrier with high load resistance and high sound absorption |
| CN201621020218.4U Active CN206090347U (en) | 2016-04-29 | 2016-08-30 | Damping formula railway metallic sound protective screen and composite set thereof |
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| CN201610285650.4A Pending CN105755974A (en) | 2016-04-29 | 2016-04-29 | Damping type railway metal sound barrier with high load resistance and high sound absorption |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468045A (en) * | 2016-04-29 | 2017-03-01 | 中国铁道科学研究院节能环保劳卫研究所 | A kind of elastic damping formula railway metal sound barrier and combinations thereof device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758569B (en) * | 2016-12-23 | 2020-05-19 | 青岛科而泰环境控制技术有限公司 | Constrained damping noise reduction plate |
| CN106758900B (en) * | 2016-12-27 | 2022-05-13 | 中国铁道科学研究院节能环保劳卫研究所 | Damping system of damping type railway metal sound barrier |
| CN106638343B (en) * | 2016-12-27 | 2022-06-10 | 中国铁道科学研究院节能环保劳卫研究所 | Damping type railway metal sound barrier system |
| CN106758899B (en) * | 2016-12-27 | 2022-09-20 | 中国铁道科学研究院节能环保劳卫研究所 | Lower decoupler of railway metal sound barrier |
| CN210315273U (en) * | 2019-01-30 | 2020-04-14 | 中国铁道科学研究院集团有限公司节能环保劳卫研究所 | Frame plate fastening type railway metal sound barrier |
| CN110172933A (en) * | 2019-05-29 | 2019-08-27 | 上海五元工程科技有限公司 | A kind of metallic sound barrier unit board using deckle board fastening structure |
-
2016
- 2016-04-29 CN CN201610285650.4A patent/CN105755974A/en active Pending
- 2016-08-30 CN CN201621020218.4U patent/CN206090347U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468045A (en) * | 2016-04-29 | 2017-03-01 | 中国铁道科学研究院节能环保劳卫研究所 | A kind of elastic damping formula railway metal sound barrier and combinations thereof device |
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| CN105755974A (en) | 2016-07-13 |
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