CN106638342A - Foamed aluminum substrate sound barrier of U-shaped beam of metro - Google Patents
Foamed aluminum substrate sound barrier of U-shaped beam of metro Download PDFInfo
- Publication number
- CN106638342A CN106638342A CN201611092060.6A CN201611092060A CN106638342A CN 106638342 A CN106638342 A CN 106638342A CN 201611092060 A CN201611092060 A CN 201611092060A CN 106638342 A CN106638342 A CN 106638342A
- Authority
- CN
- China
- Prior art keywords
- abatvoix
- support
- sound barrier
- foamed aluminium
- shaped beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
- E01F8/0064—Perforated plate or mesh, e.g. as wall facing
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a foamed aluminum substrate sound barrier of a U-shaped beam of metro and is mainly used for absorbing sounds and reducing noises for U-shaped beam of metro. The sound barrier comprises a top supporting piece and a bottom supporting piece which are fixed to two sides of the U-shaped beam of a metro track as well as a sound absorbing plate, a pressure plate and a vertical supporting piece which are arranged therebetween. The supporting piece is Z-shaped, a mounting groove which extends outward and is opened downward is formed in the upper portion of the supporting piece, and a supporting leg which extends outward is arranged in the lower portion. The sound absorbing plate is a double-sided fluorocarbon sprayed foam aluminum plate of a through hole structure, the thickness of which is greater than or equal to 5mm, the coating thickness of which is greater than or equal to 40mu m, the porosity of which is 55-65%, the average pore diameter is less than or equal to 0.7mm and the sound absorbing coefficient NRC is greater than or equal to 0.75; the sound absorbing plate is a cambered surface, a concave surface of which faces the direction of a metro locomotive, and the radius dimension of the cambered surface is 1990-2200mm, preferably 2066mm. The sound barrier can prevent noises from overflowing, is convenient to mount, and not only is convenient for field installation and construction, but also is convenient for rectification and detachment.
Description
Technical field
The present invention relates to rail traffic noise barrier engineering device technique field, more particularly to a kind of to adopt novel foam aluminium base
The U-shaped beam sound barrier device of subway.
Background technology
Sound barrier refers to one facility of insertion between sound source and recipient, makes Acoustic Wave Propagation have significant adding to decline
Subtract, so as to weaken the influence of noise in the certain area of recipient place.It can be divided into two kinds, the reflection-type sound barrier of pure sound insulation and
The compound sound barrier absorbed sound in combination with sound insulation, comparatively speaking, the latter's effect is more effectively.
As economic develops rapidly, urban track traffic be particularly subway due to it is convenient, fast, become big city on time
The preferred manner of city's public transport, the country has tens big cities to build or built subway.But subway is in operation
During the noise that produces also to working in its vicinity and the resident that live brings puzzlement, so reduction subway circulation noise is
The problem that must be solved.The U-shaped beam technology that subway construction at present is adopted, can eliminate most noise, in order to further subtract
The impact of few noise, installing sound barrier can effectively reduce noise.The traffic of prior art middle orbit and subway sound barrier are permitted
Mostly it is that being made, but these materials are deposited based on cement base or thermosetting resin, polycarbonate plate, perforated metal etc.
Matter it is crisp, sound absorbing capabilities are poor, the low defect of fire protecting performance, and mounting means is not simple enough, and long in time limit, efficiency is low.Notification number
The Chinese invention patent of CN103526700A discloses a kind of sound barrier, including ribs post, acoustic board and the back side, and abatvoix is adopted
With capillary ceramic plate, ribs post is fixed on the basis of railway.It mainly uses and formed between acoustic board and backboard hollow knot
Structure is reaching low-frequency sound-absorbing ability, but the material matter of its body acoustic board is crisp, sound absorbing capabilities are poor, and manufacturing process is excessively multiple
It is miscellaneous, it is unfavorable for in-site installation.
The content of the invention
The technical problem to be solved in the present invention there is provided a kind of sound absorption of sound-absorbing material and resistance to corrosion is strong, support dragon
Bone and structure can easily and efficiently fixedly mount abatvoix and energy-absorbing, damping and good mechanical property, process preparation process is simple
The U-shaped beam sound barrier of subway.
The technical solution used in the present invention is：The U-shaped beam foamed aluminium base material sound barrier of a kind of subway, including being fixed to subway rail
The top support of road UXing Liang both sides, bottom support and it is arranged between the top support and bottom support
Abatvoix, pressing plate, vertical support piece, are that anti-Z-shaped and top arrange that protruding Open Side Down in the top support
Groove is installed, the bottom support is Z-shaped and bottom has outwardly directed support feet, the upper end insertion of the abatvoix
In the installation groove of top support, the lower end of the abatvoix is withstood in the support feet of the bottom support, adjacent described
Abatvoix is connected with pressing plate, and on opposite face of the abatvoix with the pressing plate vertical support piece is arranged.
Further, the abatvoix be the fluorocarbon-sprayed foamed aluminium board in through-hole structure two sides, thickness >=5mm, coating layer thickness
>=40 μm, through-hole rate is 55%～65%, average pore size≤0.7mm, sound-absorption coefficient NRC >=0.75；The abatvoix is cambered surface,
Towards underground engines direction, cambered surface radius size is 1990～2200mm, preferably cambered surface radius size to the concave surface of the cambered surface
For 2066mm；The top support and the bottom support are fixed into the U-shaped beam both sides of underground railway track using chemical anchor bolts
Web on, the intensity of the chemical anchor bolts is 10.9 grades.
The invention has the beneficial effects as follows：Select abatvoix to carry out fluorocarbon-sprayed foamed aluminium for through-hole structure two sides, select
Suitable coating layer thickness, through-hole rate, average pore size, thickness and sound-absorption coefficient and in selected cambered surface radius concave surface towards track
The cambered surface design of direction of traffic, makes abatvoix in the case of with good corrosion resistance, preferably realizes the function of sound insulation and noise reduction
And it is excessive to be effectively prevented noise.Top braces are supported with bottom and are fixed to U-shaped web using pre-buried chemical anchor bolts nut
On, it is easy for installation.The Z-shaped structure that top braces are supported with bottom, makes the last of the twelve Earthly Branches that 50mm is formed between abatvoix and U-shaped web
Nurse hertz resonant cavity, when noise passes through abatvoix, abatvoix carries out a certain degree of according to itself porous sound absorption characteristic to noise
Decay, can carry out double absorption, so as to improve the effect of sqouynd absorption lowering noise to the full extent to low frequency noise.Top braces
The supporting foot structure of groove and bottom support is installed, abatvoix can be easily installed, energy-absorbing good damping effect and with compared with
Strong mechanical performance, and fabricate simply, both facilitated in-site installation to construct, it is also convenient for rectification dismounting.
Description of the drawings
Fig. 1 is the U-shaped web schematic cross-sectional view of subway；
Fig. 2 is foamed aluminium abatvoix and top support scheme of installation；
Fig. 3 is through hole type foamed aluminium seam crossing pressing plate schematic diagram；
Fig. 4 is along Fig. 3 A-A directions cross-sectional schematic；
Fig. 5 is foamed aluminium abatvoix and bottom support scheme of installation.
Wherein：1 is through hole type foamed aluminium abatvoix, and 2 is U-shaped web, and 3 is groove, and 4 is top support, and 5 is bottom
Support member, 6 is pressing plate, and 7 is vertical supporting, and 8 is chemical anchor bolts, and 9 is coiled hair self threading pin, and 10 is self-plugging rivet.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in figure 1, the U-shaped beam foamed aluminium base material sound barrier of subway, including adopting intensity for 10.9 grades of multiple chemical anchors
Bolt 8 is fixed on underground railway track 2 liang of coxostermums of U-shaped beam as the top support 4 and bottom support 5 of keel, chemical anchor bolts
Intensity be 10.9 grades, top braces 4 and bottom support 5 to be fixed on U-shaped web using pre-buried chemical anchor bolts nut, pacify
Dress is convenient.
As shown in Figure 2-5, foamed aluminium abatvoix 1 is arranged between the top support 4 and bottom support 5, top
Support 4, bottom to support to fix using self-plugging rivet 10 between 5 and abatvoix 1.It is through hole knot as the foamed aluminium board of abatvoix 1
Structure, thickness >=5mm, through-hole rate is 55%～65%, average pore size≤0.7mm, sound-absorption coefficient NRC >=0.75, in foamed aluminium board
Two sides carries out fluorocarbon-sprayed, coating layer thickness >=40 μm.The abatvoix is cambered surface, and the concave surface of the cambered surface is towards underground engines side
To cambered surface radius size is 1990～2200mm, and preferably cambered surface radius size is 2066mm.Abatvoix is the bubble of through-hole structure
Foam aluminium, with excellent physical property, chemical property and mechanical property and recuperability.Density is little, fire protecting performance is strong, anti-corruption
It is erosion, sound insulation and noise reduction, weatherability strong, easy processing, easy to install.Abatvoix is selected to carry out fluorocarbon-sprayed foam for through-hole structure two sides
Aluminium, selects suitable coating layer thickness, through-hole rate, average pore size, thickness and sound-absorption coefficient and in selected cambered surface radius concave surface
Cambered surface towards rail travelling crane direction is designed, and makes abatvoix in the case of with good corrosion resistance, preferably realizes that sound insulation is dropped
The function made an uproar and to be effectively prevented noise excessive.The top support 4 is anti-Z-shaped, the top of top support 4 arrange to
Overhang the installation groove 3 that Open Side Down.The bottom support 5 is Z-shaped, and the bottom of bottom support 5 has to overhanging
The support feet 11 for going out, in the installation groove 3 of the upper end insertion top support 4 of the abatvoix 1, the lower end of the abatvoix 1
Withstand in the support feet 11 of the bottom support 5.The adjacent abatvoix 1 is pushed down with pressing plate 6, and with adopting, the connection of self threading pin 9 is solid
It is fixed, on another face relative with the pressing plate 6 of the abatvoix 1, vertical support piece 7 is set, each correspondence of pressing plate 6 one
Individual vertical support piece 7, vertical support piece 7 is fixed with abatvoix 1 using self-plugging rivet 10.The Z that top braces are supported with bottom
Font structure, makes the last of the twelve Earthly Branches nurse hertz resonant cavity that 50mm is formed between abatvoix and U-shaped web, when noise passes through abatvoix, inhales
Soundboard carries out a certain degree of decay according to itself porous sound absorption characteristic to noise, can carry out double absorption to low frequency noise,
So as to improve the effect of sqouynd absorption lowering noise to the full extent.The support feet knot for installing groove and bottom support of top braces
Structure, can easily install abatvoix, and energy-absorbing good damping effect simultaneously has stronger mechanical performance, and fabricates simply, both
Facilitate in-site installation to construct, be also convenient for rectification dismounting.The installation of the abatvoix is will using top braces groove and dovetail nail
It is fixed on support keel, it is contemplated that abatvoix is relatively low with dovetail nail junction intensity, prevents what is produced during train driving to shake
Dynamic and blast causes damage to it, using galvanized steel plain sheet press strip to its corner seals, and then ensure that abatvoix is indeformable, extends
Service life.
The U-shaped beam foamed aluminium base material sound barrier installation process of subway is broadly divided into keel installation and installs two parts with sheet material：
(a) keel installation
Keel are fabricated to Z-shaped and support using 3mm galvanized steel plain sheets, the direction phase of top support 4 and bottom support 5
Instead, therefore top support 4 anti-Z-shaped is become.Top support 4 is provided with installation groove 3.It is first that M8*80 chemical anchors 8 are pre-
Specified location is embedded in, supports the mode being bolted to be fixed to U-shaped beam Z-shaped after the fixation of chemical anchor bolts 8
On web 2.Z-shaped support is moved towards direction and is laid along U-shaped beam, is fixed using chemical anchor bolts 8 every 1 meter.Installation procedure is：
Positioning → the impact drilling → pre-buried chemical anchor bolts → solidification → installation is vertical as the support member → installation of keel
Support member
B () foamed aluminium abatvoix plate is installed
The top of abatvoix 1 is arranged in the installation groove 3 of top support 4, and bottom withstands on bottom support 5 after installing
In support feet 11.After installation, because the effect that Z-shaped is supported forms 50mm cavitys with U-shaped web 2.Through hole type foam
Aluminium is more due to its space hole, easily causes and connects improper, if fixed using common dovetail screw, because dovetail is followed closely and bubble
Contact area is little between foam aluminium sheet, easily causes " dropout " so as to loosen, and in the presence of vibration and wind load, easily drops,
Therefore need to be attached fixation with pressing plate, and the coiled hair self threading pin 9 using M4 is fixed on above-mentioned Z-shaped keel.Peace
During dress, foamed aluminium abatvoix is mixed up after size, foamed aluminium board is fixed on keel using dovetail nail, due to foamed aluminium edges of boards
Edged surface intensity is relatively low, contact surface is little, needs to carry out corner seals using thickness 1.5mm galvanized steel plain sheets press strip, so as to ensure foam
The installation strength of aluminium, under certain blast and the effect of subway Piston Action Wind, it is ensured that foam aluminium plate is indeformable and service life.Peace
Filling flow process is：
Adjustment size → positioning → installation foam aluminium plate → installation press strip.
Claims (6)
1. the U-shaped beam foamed aluminium base material sound barrier of a kind of subway, including be fixed to the U-shaped beam both sides of underground railway track top support,
Bottom support and the abatvoix being arranged between the top support and bottom support, pressing plate, vertical support piece, its
It is characterised by, is that anti-Z-shaped and top arrange the protruding installation groove that Open Side Down, the bottom in the top support
Portion's support member is Z-shaped and bottom has outwardly directed support feet, and the peace of top support is inserted in the upper end of the abatvoix
In dress groove, the lower end of the abatvoix is withstood in the support feet of the bottom support, and the adjacent abatvoix is connected with pressing plate
Fixation is connect, vertical support piece is set on opposite face of the abatvoix with the pressing plate.
2. foamed aluminium base material sound barrier according to claim 1, it is characterised in that the abatvoix is through-hole structure two sides
Fluorocarbon-sprayed foamed aluminium board, thickness >=5mm, coating layer thickness >=40 μm, through-hole rate is 55%～65%, average pore size≤0.7mm,
Sound-absorption coefficient NRC >=0.75.
3. foamed aluminium base material sound barrier according to claim 1 and 2, it is characterised in that the abatvoix is cambered surface, described
Towards underground engines direction, cambered surface radius size is 1990～2200mm to the concave surface of cambered surface.
4. foamed aluminium base material sound barrier according to claim 3, it is characterised in that the abatvoix cambered surface radius size is
2066mm。
5. foamed aluminium base material sound barrier according to claim 1, it is characterised in that using chemical anchor bolts by the top
Support member is fixed on the web of the U-shaped beam both sides of underground railway track with the bottom support.
6. foamed aluminium base material sound barrier according to claim 5, it is characterised in that the intensity of the chemical anchor bolts is 10.9
Level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092060.6A CN106638342A (en) | 2016-12-01 | 2016-12-01 | Foamed aluminum substrate sound barrier of U-shaped beam of metro |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092060.6A CN106638342A (en) | 2016-12-01 | 2016-12-01 | Foamed aluminum substrate sound barrier of U-shaped beam of metro |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106638342A true CN106638342A (en) | 2017-05-10 |
Family
ID=58814734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611092060.6A Pending CN106638342A (en) | 2016-12-01 | 2016-12-01 | Foamed aluminum substrate sound barrier of U-shaped beam of metro |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106638342A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630188A (en) * | 2018-04-28 | 2018-10-09 | 中国铁道科学研究院铁道建筑研究所 | The processing technology of sound absorption structure, acoustic absorptive member, package system and sound absorption structure |
| CN108914796A (en) * | 2018-08-28 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | A kind of sound barrier device of straddle-type monorail |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630188A (en) * | 2018-04-28 | 2018-10-09 | 中国铁道科学研究院铁道建筑研究所 | The processing technology of sound absorption structure, acoustic absorptive member, package system and sound absorption structure |
| CN108914796A (en) * | 2018-08-28 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | A kind of sound barrier device of straddle-type monorail |
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Application publication date: 20170510 |