CN1397688A - Sound-absorbing barrier for highway - Google Patents
Sound-absorbing barrier for highway Download PDFInfo
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- CN1397688A CN1397688A CN 01108625 CN01108625A CN1397688A CN 1397688 A CN1397688 A CN 1397688A CN 01108625 CN01108625 CN 01108625 CN 01108625 A CN01108625 A CN 01108625A CN 1397688 A CN1397688 A CN 1397688A
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- sound
- back cavity
- cavity plate
- microperforated panel
- sound absorption
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
A sound absorbing board as the sound barrier of highway for reducing traffic noise is composed of perforated board with many microholes designed according to different frequencies and bandwidthes of traffic noise and having different shapes, sound absorbing material, back cavity plate and joint members. The said sound absorbing material is between said perforated board and back cavity plate to for a back cavity between it and back cavity plate. It features high acoustic absorptivity (0.5-0.92).
Description
The invention belongs to environment-friendly engineering material field, relate in particular to a kind of sound-absorbing barrier for highway that prevents that traffic noise from disturbing.
High speed development along with communication, traffic noise becomes increasingly conspicuous to the pollution of environment, particularly on speedway, the elevated road, the speed of a motor vehicle is fast, vehicle flowrate is big, its noise makes a big impact to resident's working unit personnel's of periphery life, work, and sound barrier is also becoming one of important measures of control road traffic noise simultaneously.But the special-purpose sound absorption material that sound barrier is selected for use does not almost have, and does not carry out the design of acoustics, mechanics, practical aspect according to the concrete condition of highway traffic noise, and it is relatively poor or cost is too high to make it to occur soundproof effect.From the prior art, the sound absorption material that abroad sound barrier is used has carried out big quantity research.Disclose a kind of hollow core pattern panels that absorbs sound as United States Patent (USP) 6021612, utilized hertz to be total to resonance principle and make the resonator that can absorb alternative sounds in advance, the sound absorption material of nested groups synthesizing new.Domestic disclosed sound barrier patent does not relate to the research of the said sound barrier sound absorption material of the present invention as the special ZL96229272.9 of China, ZL0022851.9 yet, and Chinese patent ZL98214491.1 also only is only applicable to the requirement of interior decoration sound insulation.
The objective of the invention is according to the acoustic engineering principle, design a kind of novel road sound barrier sound absorption material in conjunction with the different frequency of highway noise; To overcome the deficiency of existing sound absorption material, satisfy the needs that the special-purpose sound absorption material of road sound barrier rises day by day.
The present invention's purpose realizes finishing by the following technical programs.At first precast the microperforated panel that constitutes sound-absorbing barrier, the micropore that distributes on the microperforated panel is according to the different frequency of highway noise and frequency bandwidth, designs according to the acoustics mechanics principle.Secondly the shape of micropore can be designed to different geometries as required, with microperforated panel, sound absorption material, back cavity plate, constitute an integral body by link.Sound absorption material is filled in to be close to microperforated panel one Side and to keep certain distance to form a back cavity that is full of air with the back cavity plate between microperforated panel and the back cavity plate; The resonant sound absorber of forming a kind of high acoustic resistance, the frequency of the complete topped highway noise of its sound absorption band width, thus realized the purpose that the present invention proposes.More particularly a kind of sound-absorbing barrier for highway, it is characterized in that constituting by microperforated panel 1, sound absorption material 2, back cavity plate 3, link 4, microperforated panel 1 front layer is in the face of noise source, and back layer is connected on the link 4, is connected with back cavity plate 3 by link 4; Sound absorption material 2 is filled in to be close to microperforated panel 1 back layer, one Side and to keep certain space apart from forming back cavity 5 with back cavity plate 3 between microperforated panel 1 and the back cavity plate 3; Sound-absorbing barrier for highway according to claim 1, it is characterized in that being distributed with on the microperforated panel 1 some micropores 1.1, its micro-pore diameter between 0.4～1.5mm, distance between borehole is between 3～10mm; Sound-absorbing barrier for highway according to claim 1 is characterized in that the some micropores 1.1 that distribute on the microperforated panel 1 have various geometries, can be circular, oval or square; According to claim 1,2 described sound-absorbing barrier for highway, it is characterized in that microperforated panel 1, sound absorption material 2, back cavity plate 3, link 4 must constitute an integral body and play a role.By above design and develop the said acoustical board of the present invention, measurement result through being undertaken by " Code for measurement of sound absorbing coefficient in reverberation room " GBJ47-83 shows: acoustically effective is good, centering, low-frequency sound wave absorb particularly outstanding, to the 160-4000Hz sound wave, its sound absorption coefficient α 〉=0.5, to the 160-500Hz sound wave, its sound absorption coefficient α＞0.8, the sound absorption coefficient maximum value can reach the said acoustical board of 0.92 (to the 400Hz sound wave) the present invention and play conclusive effect to improving road sound barrier sound absorption reduction effect, has realized purpose of the present invention.
Fig. 1 is the said acoustical board structural profile of a present invention schematic diagram.
Fig. 2 is the said acoustical board schematic diagram of the present invention.
Provide embodiment in conjunction with the accompanying drawings and be described further, link 4 can be made of steel bar welding or other metal material as can be seen from Fig. 1, Fig. 2, said microperforated panel 1 can be used multiple material, consider outdoor exposing to the sun and rain and the influence of factor such as high temperature, present embodiment selects for use aluminium sheet to make.Embodiment 1: the present invention selects aperture 1.5mm pitch of holes 10mm for use during prefabricated micropore, is shaped as garden shape.And be connected with said link 4 with rivet.Sound absorption material 2 present embodiments select for use sound absorption coefficient greater than 0.5 glass fiber, with the high strength alite paste sound absorption material 2 is sticked on the microperforated panel 1, said back cavity plate 3 is also selected aluminium sheet for use, and must make during link 4 riveted joint and keep the certain space distance between back cavity plate 3 and the sound absorption material 2 with formation back cavity 5; Said acoustical board is by microperforated panel 1, sound absorption material 2, back cavity plate 3, links integral body of parts 4 be combined intos, and only a unit length and width height is 400cm * 300cm * 10cm.The required special-purpose acoustical board of road sound barrier can be formed in several such unit.Embodiment 2: select for use corrosion resistant plate to make, the present invention selects aperture 0.4mm pitch of holes 3mm for use during prefabricated micropore, is shaped as ellipse garden shape.And be connected with said link 4 with rivet.Sound absorption material 2 present embodiments select for use sound absorption coefficient greater than 0.5 sound absorption cotton, with the high strength alite paste sound absorption material 2 is sticked on the microperforated panel 1, said back cavity plate 3 is still selected aluminium sheet for use, and must make during link 4 riveted joint and keep the certain space distance between back cavity plate 3 and the sound absorption material 2 with formation back cavity 5; Said acoustical board is by microperforated panel 1, sound absorption material 2, back cavity plate 3, links integral body of parts 4 be combined intos, and only a unit length and width height is 200cm * 100cm * 5cm.Embodiment 3: select for use poly (methyl methacrylate) plate to make, the present invention selects aperture 0.8mm pitch of holes 8mm for use during prefabricated micropore, is shaped as square.And be connected with said link 4 with rivet.Sound absorption material 2 present embodiments select for use sound absorption coefficient greater than 0.5 sound absorption cotton, with the high strength alite paste sound absorption material 2 is sticked on the microperforated panel 1, said back cavity plate 3, select opaque poly (methyl methacrylate) plate for use, and must make during link 4 riveted joint and keep the certain space distance between back cavity plate 3 and the sound absorption material 2 with formation back cavity 5; Said acoustical board is by microperforated panel 1, sound absorption material 2, back cavity plate 3, links integral body of parts 4 be combined intos, and only a unit length and width height is 300cm * 150cm * 8cm.
Claims (4)
1, a kind of sound-absorbing barrier for highway, it is characterized in that constituting by microperforated panel 1, sound absorption material 2, back cavity plate 3, link 4, microperforated panel 1 front layer is in the face of noise source, and back layer is connected on the link 4, is connected with back cavity plate 3 by link 4; Sound absorption material 2 is filled between microperforated panel 1 and the back cavity plate 3, is close to microperforated panel 1 back layer one Side, and keeps certain space apart from forming back cavity 5 with back cavity plate 3;
2, sound-absorbing barrier for highway according to claim 1, it is characterized in that being distributed with on the microperforated panel 1 some micropores 1.1, its micro-pore diameter between 0.4～1.5mm, distance between borehole is between 3～10mm;
3, sound-absorbing barrier for highway according to claim 1 is characterized in that the some micropores 1.1 that distribute on the microperforated panel 1 have various geometries, can be circular, oval or square;
4,, it is characterized in that microperforated panel 1, sound absorption material 2, back cavity plate 3, link 4 must constitute an integral body and play a role according to claim 1,2 described sound-absorbing barrier for highway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108625 CN1397688A (en) | 2001-07-13 | 2001-07-13 | Sound-absorbing barrier for highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108625 CN1397688A (en) | 2001-07-13 | 2001-07-13 | Sound-absorbing barrier for highway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1397688A true CN1397688A (en) | 2003-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01108625 Pending CN1397688A (en) | 2001-07-13 | 2001-07-13 | Sound-absorbing barrier for highway |
Country Status (1)
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| CN (1) | CN1397688A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389239C (en) * | 2005-09-30 | 2008-05-21 | 北京市伟力达科技贸易公司 | A new material sound absorption, insulation common sound shielding and producing method thereof |
| CN1741127B (en) * | 2005-08-25 | 2010-05-12 | 上海交通大学 | Reciprocating vibration energy-dissipation acoustic structure |
| CN103061242A (en) * | 2013-01-09 | 2013-04-24 | 中铁工程设计咨询集团有限公司 | Sound-barrier simply-supported T-beam bridge |
| CN104631354A (en) * | 2015-02-15 | 2015-05-20 | 青岛声达技术有限公司 | Sound absorbing device used for U-beam composite structure of light rail |
| CN108221722A (en) * | 2016-12-15 | 2018-06-29 | 厦门嘉达声学技术有限公司 | Outdoor composite sound absorbing module |
| CN108866967A (en) * | 2018-08-02 | 2018-11-23 | 海信（山东）冰箱有限公司 | A kind of denoising structure for washing machine |
| CN113793586A (en) * | 2021-08-24 | 2021-12-14 | 武汉理工大学 | Low-frequency ultra-wideband acoustic black hole acoustic material structure |
-
2001
- 2001-07-13 CN CN 01108625 patent/CN1397688A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1741127B (en) * | 2005-08-25 | 2010-05-12 | 上海交通大学 | Reciprocating vibration energy-dissipation acoustic structure |
| CN100389239C (en) * | 2005-09-30 | 2008-05-21 | 北京市伟力达科技贸易公司 | A new material sound absorption, insulation common sound shielding and producing method thereof |
| CN103061242A (en) * | 2013-01-09 | 2013-04-24 | 中铁工程设计咨询集团有限公司 | Sound-barrier simply-supported T-beam bridge |
| CN104631354A (en) * | 2015-02-15 | 2015-05-20 | 青岛声达技术有限公司 | Sound absorbing device used for U-beam composite structure of light rail |
| CN104631354B (en) * | 2015-02-15 | 2017-05-17 | 青岛声达技术有限公司 | Sound absorbing device used for U-beam composite structure of light rail |
| CN108221722A (en) * | 2016-12-15 | 2018-06-29 | 厦门嘉达声学技术有限公司 | Outdoor composite sound absorbing module |
| CN108866967A (en) * | 2018-08-02 | 2018-11-23 | 海信（山东）冰箱有限公司 | A kind of denoising structure for washing machine |
| CN113793586A (en) * | 2021-08-24 | 2021-12-14 | 武汉理工大学 | Low-frequency ultra-wideband acoustic black hole acoustic material structure |
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