CN104727241A - Integral type multilayer micro-perforated metallic sound barrier - Google Patents
Integral type multilayer micro-perforated metallic sound barrier Download PDFInfo
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- CN104727241A CN104727241A CN201510133015.XA CN201510133015A CN104727241A CN 104727241 A CN104727241 A CN 104727241A CN 201510133015 A CN201510133015 A CN 201510133015A CN 104727241 A CN104727241 A CN 104727241A
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- sound barrier
- acoustical board
- continuous circular
- curved surface
- plate
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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
- E01F8/0035—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with undulated surfaces
-
- 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
- E01F8/0023—Details, e.g. foundations
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses an integral type multilayer micro-perforated metallic sound barrier. The barrier comprises supporting stand columns which are fixedly arranged along the two sides of a rail track at intervals, a group of metallic acoustic panel absorbers are fixedly hung on every two stand columns in vertical direction, each group of metallic acoustic panel absorbers are arranged into three layers, the three layers are hung on the corresponding stand columns respectively, intermediate frequency acoustic panel absorbers are arranged on the track traveling front face, high frequency acoustic panel absorbers are arranged on the track traveling back face, and low frequency acoustic panel absorbers are arranged in the middle. According to the barrier, multilayer micro-perforated acoustic panel absorber structures are adopted, the frequency division control over sound is achieved, no fiber sound absorption materials are added, the environmental pollution problem caused by flying-off of fiber and dust is completely eradicated, the acoustic panel absorbers of all layers absorb noise at different frequency, composite sound absorption chambers are formed, and the flexible connection among all parts enables the total sound barrier to become an acoustic product in real sense.
Description
Technical field
The invention belongs to railway operation noise abatement technical field, especially belong to high-speed railway noise abatement technology, particularly a kind of monolithic multilayer microporous metallic sound barrier.
Background technology
Sound barrier is the facility inserted between sound source and recipient, makes Acoustic Wave Propagation have a significant additional attenuation, thus weakens the influence of noise in the certain area at recipient place.
Existing noise barrier structure is comparatively single, particularly metallic sound barrier.Existing structure mostly is upright plate box-type, adds fiber absorbing material in unit board casing.Connected H profile steel column and roadbed and bridge are rigid connection, and the train of high-speed cruising can destroy its structure, causes noise barrier stand column base flexible, and in plate casing, fiber absorbing material is piled up, dispersed.
Summary of the invention
The present invention discloses a kind of monolithic multilayer microporous metallic sound barrier according to the deficiencies in the prior art.The problem to be solved in the present invention improves a kind of more reasonable structure, without adding sound absorption material, sound absorption reduction performance better monolithic multilayer microporous metallic sound barrier.
The present invention is achieved through the following technical solutions:
Monolithic multilayer microporous metallic sound barrier, comprise interval, both sides, downline road and arrange fixing support post, every two root posts vertically hang and fixes one group of metallic panel absorber, it is characterized in that: described often group acoustical board is three layers and is suspended on respectively on column, circuit driving face is intermediate frequency acoustical board, the circuit driving back side is high frequency acoustical board, and centre is low-frequency acoustical board.
Described column is the T-shaped column of shaped form.
Described intermediate frequency acoustical board plate face entirety is curved surface, comprises top arc deflector and intermediate frequency curved surface continuous circular arc plate; Described intermediate frequency curved surface continuous circular arc plate has the steel plate of 7 continuous circular arcs and prestressing force angle iron frame to form by the often group of roll forming, and plate face is evenly arranged perforation; Described top arc deflector is made up of the circular arc-shaped metal plate of the uniform close blind hole in surface.
Described top arc deflector width is greater than sound barrier top cross-sectional width and is hidden by sound barrier.
Described low-frequency acoustical board plate face entirety is curved surface, comprises flow-disturbing flat board and the low frequency curved surface continuous circular arc plate of top arc transition; Described low frequency curved surface continuous circular arc plate has the steel plate of 7 continuous circular arcs and prestressing force angle iron frame to form by the often group of roll forming; Described flow-disturbing flat board and low frequency curved surface continuous circular arc plate plate face are evenly arranged perforation.
Described high frequency acoustical board surface integral is plane, has the elliptic arc steel plate of 2 kinds of curvature and prestressing force angle iron frame assembly welding to form by the often group of roll forming.
Form cavity between above-mentioned three layers of acoustical board, cavity cross section from top to bottom width increases successively.
Described support post web has the through hole of the adjacent two unit sound barriers of the irregular connection of different pore size.
Described three layers of acoustical board are hung by damped elasticity rubber cushion and column respectively and are connected and fixed.
Sound barrier of the present invention is made up of three layers of acoustical board, comprises intermediate frequency acoustical board, low-frequency acoustical board, high frequency acoustical board, assembles integrally formula sound barrier by damping rubber cushion with the T-shaped column of shaped form; Arrange intermediate frequency acoustical board with circuit driving face, arrange low-frequency acoustical board, high frequency acoustical board successively again.
Intermediate frequency acoustical board is formed by the continuous circular arc punched steel plate of 7 kinds of radius of curvature through roll forming and prestressing force angle iron frame and close blind hole water conservancy diversion arc plate assembly welding.Hypomere continuous circular arc micropunch truss panel absorbs eliminates Mid Frequency sound wave, produces " sonic boom " when upper end deflector is used for avoiding sound ray diffraction.
Low-frequency acoustical board plate forms by through the continuous circular arc micropunch steel plate being different from 7 kinds of radius of curvature of intermediate frequency acoustical board of roll forming and prestressing force angle iron frame and the dull and stereotyped assembly welding of close perforation flow-disturbing.Hypomere continuous circular arc micropunch truss panel absorbs eliminates low frequency frequency range sound wave, and air-flow wake resistance whirlpool abolished by upper end close perforation flow-disturbing flat board, eliminates the noise further and subtracts energy noise reduction.
High frequency acoustical board is formed by the elliptic arc steel plate of two kinds of curvature through roll forming and prestressing force angle iron frame assembly welding.Be used for absorbing and intercepting high band noise.
The present invention adopts continuous circular arc surface effectively to add the specific area of sound barrier, rigid surface is become elastic construction simultaneously.And making sound wave change back wave path when reflecting, causing difference, producing superposition, interfering thus cancelling out each other and improving noise elimination noise reduction effect.
Three layers of truss panel connects to form an overall sound barrier unit by damping rubber cushion with the T-shaped column of shaped form.This unit defines not wide cavity from top to bottom, by micropore sound absorption, panel vibration eliminating the noise in cavity, cancels traditional sound absorption material.
The T-shaped column of shaped form, its web has the irregular through hole of different pore size, by through for air-flow in the sound barrier unit cavity of series connection, apply different apertures and causes abrupt interface to subtract to eliminate the noise.The T-shaped column of shaped form adopts vertical direction to circuit driving face warp architecture, and bending curve is conducive to noise reflection and absorbs; Cross section is T-shaped structure, and lower cross section is greater than cross section, more reliable and more stable, and T-shaped both sides hang the acoustical board of fixing adjacent Unit two respectively.The each parts of this sound barrier, all by damping rubber cushion resilient connection, make sound barrier have omnibearing degree of freedom.
The present invention adopts multilayer Micropunch Acoustic Board structure, achieve and the frequency division of sound is administered, do not add fiber absorbing material, stopped fibre dust disperse pollute environmental issue, each layer metallic panel absorber is respectively to different frequency noise absorbent, and forming composite sound absorbing chamber, flexibly connecting between each parts makes whole sound barrier become the acoustic product of real meaning.
Accompanying drawing explanation
Fig. 1 is sound barrier plane structure schematic diagram of the present invention;
Fig. 2 is sound barrier unit side of the present invention structural representation;
Fig. 3 is sound barrier unit longitudinal middle part structural representation of the present invention, i.e. Figure 1A A face structural representation;
Fig. 4 is sound barrier of the present invention assembling isolating construction schematic diagram;
Fig. 5 is column side of the present invention structural representation;
Fig. 6 is column Facad structure schematic diagram of the present invention;
Fig. 7 is intermediate frequency acoustical board perspective view of the present invention;
Fig. 8 is intermediate frequency acoustical board continuous circular arc schematic diagram of the present invention;
Fig. 9 is low-frequency acoustical board perspective view of the present invention;
Figure 10 is low-frequency acoustical board continuous circular arc schematic diagram of the present invention;
Figure 11 is high frequency acoustical board perspective view of the present invention;
Figure 12 is high frequency acoustical board elliptic arc schematic diagram of the present invention.
In figure, 1 is acoustical board, and 2 is columns, 3 is group Buddhist nun elastic rubber fittings, and 11 is intermediate frequency acoustical boards, and 11a is intermediate frequency curved surface continuous circular arc plate, 11b is top arc deflector, 12 is low-frequency acoustical board, and 12a is low frequency curved surface continuous circular arc plate, and 12b flow-disturbing is dull and stereotyped, 13 is high frequency acoustical boards, 13a is elliptic arc steel plate, and 21 is through holes, and 22 is acoustical board installing holes.
Detailed description of the invention
Below by embodiment, the present invention is specifically described; embodiment is only for being further detailed the present invention; can not be interpreted as limiting the scope of the invention, some nonessential improvement that those skilled in the art makes according to the content of the invention described above and adjustment also belong to the scope of protection of the invention.
Composition graphs 1 to Figure 12.
Monolithic multilayer microporous metallic sound barrier, comprise interval, both sides, downline road and arrange fixing support post 2, every two root posts 2 vertically hang and fixes one group of metallic panel absorber 2, often organize acoustical board 1 to be three layers and to be suspended on column 2 respectively, circuit driving face is intermediate frequency acoustical board 11, the circuit driving back side is high frequency acoustical board 13, and centre is low-frequency acoustical board 12.
Column 2 is the T-shaped columns of shaped form.
Intermediate frequency acoustical board 11 plate face entirety is curved surface, comprises top arc deflector 11b and intermediate frequency curved surface continuous circular arc plate 11a; Intermediate frequency curved surface continuous circular arc plate 11a has the steel plate of 7 continuous circular arcs and prestressing force angle iron frame to form by the often group of roll forming, and plate face is evenly arranged perforation; Top arc deflector 11b is made up of the circular arc-shaped metal plate of the uniform close blind hole in surface.
Top arc deflector 11b width is greater than sound barrier top cross-sectional width and is hidden by sound barrier.
Low-frequency acoustical board 12 plate face entirety is curved surface, comprises the dull and stereotyped 12b and low frequency curved surface continuous circular arc plate 12a of flow-disturbing of top arc transition; Low frequency curved surface continuous circular arc plate 12a has the steel plate of 7 continuous circular arcs and prestressing force angle iron frame to form by the often group of roll forming; The dull and stereotyped 12b of flow-disturbing and low frequency curved surface continuous circular arc plate 12a plate face are evenly arranged perforation.
High frequency acoustical board 13 surface integral is plane, has the elliptic arc steel plate 13a of 2 kinds of curvature and prestressing force angle iron frame assembly welding to form by the often group of roll forming.
Form cavity between the present invention's three layers of acoustical board 1, cavity cross section from top to bottom width increases successively.
Support post 2 web has the through hole 21 of the adjacent two unit sound barriers of the irregular connection of different pore size.
Three layers of acoustical board 1 are hung by damped elasticity rubber cushion 3 and column 2 respectively and are connected and fixed.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, Fig. 1 is one group of sound barrier plane structure schematic diagram, illustrate only the one group of acoustical board 1 be arranged between two columns 2 in figure.Fig. 2 is sound barrier unit side structural representation, is actually the side structure schematic diagram of Fig. 1.Fig. 3 is sound barrier unit longitudinal middle part structural representation, i.e. Figure 1A A face structural representation.Fig. 4 sound barrier assembling isolating construction schematic diagram.Noise barrier stand column 2 of the present invention is connected and fixed by bottom prefabricate and install pedestal and railway basis, has rubber damping pad and base plate during connection between column 2 and basis.Each acoustical board 1 arranges damped elasticity rubber cushion 3 on angle iron frame, is connected and fixed by damped elasticity rubber cushion 3 and column 2.Rail track driving face be intermediate frequency acoustical board 11, circuit driving the back side be high frequency acoustical board 13, centre is low-frequency acoustical board 12.Form cavity between each acoustical board 1, cavity cross section can adopt not wide structure, and this illustration cavity cross section from top to bottom width increases successively.
As shown in Figure 5, Figure 6, Fig. 5 is column side of the present invention structural representation; Fig. 6 is column Facad structure schematic diagram of the present invention; Column 2 web of the present invention has the through hole 21 of the adjacent two unit sound barriers of the irregular connection of different pore size, through hole 21, by through for air-flow in the sound barrier unit cavity of series connection, applied different apertures and is caused abrupt interface to subtract to eliminate the noise.The T-shaped column 2 of shaped form adopts vertical direction to circuit driving face warp architecture, and bending curve is conducive to noise reflection and absorbs; Cross section is T-shaped structure, and lower cross section is greater than cross section, more reliable and more stable, and T-shaped both sides hang the acoustical board 1 of fixing adjacent Unit two respectively.
As shown in Figure 7, Figure 8, Fig. 7 is intermediate frequency acoustical board perspective view of the present invention; Fig. 8 is intermediate frequency acoustical board continuous circular arc schematic diagram of the present invention; In Fig. 7, intermediate frequency acoustical board 11 plate face entirety is curved surface, and this curved surface coordinates with the longitudinal arc of column 2 when mounted, and intermediate frequency acoustical board 11 comprises top arc deflector 11b and intermediate frequency curved surface continuous circular arc plate 11a; Intermediate frequency curved surface continuous circular arc plate 11a has the steel plate of 7 continuous circular arcs and prestressing force angle iron frame to form by the often group of roll forming, and plate face is evenly arranged perforation, and perforation does not indicate in the drawings; Top arc deflector 11b is made up of the circular arc-shaped metal plate of the uniform close blind hole in surface.Fig. 8 illustrates the curvilinear structures of one group of continuous circular arc, and this routine continuous circular arc adopts Symmetrical Circular Arc to arrange, centre one comparatively orthodrome, and respectively there are three symmetrical circular arcs orthodrome both sides, and orthodrome convex surface is towards driving face, and the arc radius of 7 continuous circular arcs can be multiple; Prestressing force angle iron frame is for intermediate frequency curved surface continuous circular arc plate 11a and the installation damped elasticity rubber cushion 3 of formalizing; The uniform close blind hole in top arc deflector 11b surface, produce " sonic boom " when the close blind hole on the gentle surface of arc structure is conducive to avoiding sound ray diffraction, employing is simultaneously greater than sound barrier top cross-sectional width and sound barrier covering structure can be improved sound barrier water resistance further.
As shown in Figure 9, Figure 10, Fig. 9 is low-frequency acoustical board perspective view of the present invention; Figure 10 is low-frequency acoustical board continuous circular arc schematic diagram of the present invention; Similar with intermediate frequency acoustical board 11, low-frequency acoustical board 12 plate face entirety is curved surface, comprises the dull and stereotyped 12b and low frequency curved surface continuous circular arc plate 12a of flow-disturbing of top arc transition; Low frequency curved surface continuous circular arc plate 12a has the steel plate of 7 continuous circular arcs and prestressing force angle iron frame to form by the often group of roll forming, and the radius of 7 continuous circular arcs is different from intermediate frequency curved surface continuous circular arc radius; The dull and stereotyped 12b of flow-disturbing and low frequency curved surface continuous circular arc plate 12a plate face are evenly arranged perforation, and perforation does not indicate in the drawings; Low frequency curved surface continuous circular arc plate 12a absorbs and eliminates low frequency frequency range sound wave, and the dull and stereotyped 12b of flow-disturbing can abolish air-flow wake resistance whirlpool, and further noise elimination subtracts can noise reduction.
As shown in Figure 11, Figure 12, Figure 11 is high frequency acoustical board perspective view of the present invention; Figure 12 is high frequency acoustical board elliptic arc schematic diagram of the present invention; High frequency acoustical board 13 surface integral is plane, has the elliptic arc steel plate 13a of 2 kinds of curvature and prestressing force angle iron frame assembly welding to form by the often group of roll forming.Figure 12 represents one group of elliptic arc structure, have large elliptic arc and little elliptic arc smooth connection form, large elliptic arc convex surface towards the opposing face of direction of traffic, namely outside direction of traffic.
The present invention adopts three layers of acoustical board 1 structure, and adopts continuous circular arc surface effectively to add the specific area of sound barrier, rigid surface is become elastic construction simultaneously.And making sound wave change back wave path when reflecting, causing difference, producing superposition, interfering thus cancelling out each other and improving noise elimination noise reduction effect.
Claims (9)
1. monolithic multilayer microporous metallic sound barrier, comprise interval, both sides, downline road and arrange fixing support post, every two root posts vertically hang and fixes one group of metallic panel absorber, it is characterized in that: described often group acoustical board is three layers and is suspended on respectively on column, circuit driving face is intermediate frequency acoustical board, the circuit driving back side is high frequency acoustical board, and centre is low-frequency acoustical board.
2. monolithic multilayer microporous metallic sound barrier according to claim 1, is characterized in that: described column is the T-shaped column of shaped form.
3. monolithic multilayer microporous metallic sound barrier according to claim 1, is characterized in that: described intermediate frequency acoustical board plate face entirety is curved surface, comprises top arc deflector and intermediate frequency curved surface continuous circular arc plate; Described intermediate frequency curved surface continuous circular arc plate has the steel plate of 7 continuous circular arcs and prestressing force angle iron frame to form by the often group of roll forming, and plate face is evenly arranged perforation; Described top arc deflector is made up of the circular arc-shaped metal plate of the uniform close blind hole in surface.
4. monolithic multilayer microporous metallic sound barrier according to claim 3, is characterized in that: described top arc deflector width is greater than sound barrier top cross-sectional width and is hidden by sound barrier.
5. monolithic multilayer microporous metallic sound barrier according to claim 1, is characterized in that: described low-frequency acoustical board plate face entirety is curved surface, comprises flow-disturbing flat board and the low frequency curved surface continuous circular arc plate of top arc transition; Described low frequency curved surface continuous circular arc plate has the steel plate of 7 continuous circular arcs and prestressing force angle iron frame to form by the often group of roll forming; Described flow-disturbing flat board and low frequency curved surface continuous circular arc plate plate face are evenly arranged perforation.
6. monolithic multilayer microporous metallic sound barrier according to claim 1, is characterized in that: described high frequency acoustical board surface integral is plane, has the elliptic arc steel plate of 2 kinds of curvature and prestressing force angle iron frame assembly welding to form by the often group of roll forming.
7. the monolithic multilayer microporous metallic sound barrier according to any one of claim 1 to 6, is characterized in that: form cavity between described three layers of acoustical board, cavity cross section from top to bottom width increases successively.
8. monolithic multilayer microporous metallic sound barrier according to claim 7, is characterized in that: the through hole described support post web having the adjacent two unit sound barriers of the irregular connection of different pore size.
9. monolithic multilayer microporous metallic sound barrier according to claim 7, is characterized in that: described three layers of acoustical board are hung by damped elasticity rubber cushion and column respectively and are connected and fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510133015.XA CN104727241B (en) | 2015-03-25 | 2015-03-25 | Integral type multilayer micro-perforated metallic sound barrier |
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| CN201510133015.XA CN104727241B (en) | 2015-03-25 | 2015-03-25 | Integral type multilayer micro-perforated metallic sound barrier |
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| CN104727241B CN104727241B (en) | 2017-04-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803963A (en) * | 2016-03-23 | 2016-07-27 | 重庆再升科技股份有限公司 | Light sound-absorbing composite material used along track |
| CN105823133A (en) * | 2016-05-31 | 2016-08-03 | 广东美的制冷设备有限公司 | Cabinet air conditioner |
| CN107841960A (en) * | 2017-11-28 | 2018-03-27 | 佛山科学技术学院 | A kind of bridge sound-insulating structure of municipal works |
| CN110172932A (en) * | 2019-05-20 | 2019-08-27 | 成都中弘轨道交通环保产业股份有限公司 | Monoblock type super high strength concrete-micropore ceramics compound sound barrier and its manufacturing method |
| CN112681167A (en) * | 2020-12-22 | 2021-04-20 | 李艳丽 | Noise control sound insulation area for highway |
| CN114934459A (en) * | 2022-05-16 | 2022-08-23 | 中海环境科技(上海）股份有限公司 | Sound barrier structure for reducing noise of rail transit secondary structure and design method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105803963A (en) * | 2016-03-23 | 2016-07-27 | 重庆再升科技股份有限公司 | Light sound-absorbing composite material used along track |
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| CN112681167A (en) * | 2020-12-22 | 2021-04-20 | 李艳丽 | Noise control sound insulation area for highway |
| CN114934459A (en) * | 2022-05-16 | 2022-08-23 | 中海环境科技(上海）股份有限公司 | Sound barrier structure for reducing noise of rail transit secondary structure and design method |
| CN114934459B (en) * | 2022-05-16 | 2023-09-01 | 中海环境科技(上海）股份有限公司 | Sound barrier structure for reducing noise of secondary structure of rail transit and design method |
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|---|---|
| CN104727241B (en) | 2017-04-12 |
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