CN201221057Y - Noise absorption apparatus on top of acoustical barrier - Google Patents

Noise absorption apparatus on top of acoustical barrier Download PDF

Info

Publication number
CN201221057Y
CN201221057Y CNU2008201086387U CN200820108638U CN201221057Y CN 201221057 Y CN201221057 Y CN 201221057Y CN U2008201086387 U CNU2008201086387 U CN U2008201086387U CN 200820108638 U CN200820108638 U CN 200820108638U CN 201221057 Y CN201221057 Y CN 201221057Y
Authority
CN
China
Prior art keywords
sound
barrier
cover plate
cavity
plate
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.)
Expired - Lifetime
Application number
CNU2008201086387U
Other languages
Chinese (zh)
Inventor
冀志江
陈继浩
徐晖
张忠伦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Building Materials Academy CBMA
Original Assignee
China Building Materials Academy CBMA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Building Materials Academy CBMA filed Critical China Building Materials Academy CBMA
Priority to CNU2008201086387U priority Critical patent/CN201221057Y/en
Application granted granted Critical
Publication of CN201221057Y publication Critical patent/CN201221057Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

The utility model discloses an additional device on the top of a noise barrier. The additional device has a variable-section cavity structure consisting of a frame and a cover plate arranged on the top, wherein the frame consists of a bottom plate and a plurality of vertical baffles for supporting the top cover plates; two high baffles are arranged at the middle part of the frame, and two low baffles are arranged on two sides; frames are arranged on the upper edge of the baffles; and the top cover plate is fixed on the frames in riveting manner. The additional device can be suitable for the top of the noise barrier to reduce the height of the noise barrier or can be attached to the top of the former vertical noise barrier for reconstruction of the noise barrier to improve the noise reduction effect of the former noise barrier.

Description

A kind of sound barrier top sound absorber
Technical field
The utility model relate to a kind of be attached to the road noise barrier top prevent the noise device, be specifically related to a kind of top sound absorption reduction device.
Background technology
Along with the urban traffic development, the fast development of viaduct and speedway, vehicular traffic is on the rise along with the increase of city vehicle to the noise of resident's generation of road both sides, and along with the raising of people's living standard, people are also more and more higher to the requirement of noise.Usually adopt the mode that noise barrier is set in the road both sides for this reason.At present, normally used noise barrier mostly adopts upright form, the sound insulation and noise reducing poor effect.Influencing bigger is top diffraction sound, also is a more unmanageable part simultaneously, increases and highly can improve top diffraction sonic propagation, because the influence of cost and civic landscape etc., the height of noise barrier is restricted.
Summary of the invention
The purpose of this utility model is to provide and can effectively absorbs top diffraction sound, makes diffraction acoustic energy obtain diffusion and decay, significantly improves a kind of sound barrier top sound absorber of the noise reduction of noise barrier.
For reaching above-mentioned purpose, the concrete content of the utility model is:
A kind of sound barrier top sound absorber be the variable cross-section closed cavity structure of being made up of the different cavity in a plurality of cross sections, and this cavity structure upper surface is that sound absorption material is made.
Described cavity structure is made up of framework and the cover plate that is installed in the top, and framework is made up of the vertical baffle plate that a base plate and polylith are used for the support top end cover plate, and frame mid portion is established two high baffle plates, and both sides are two low baffle plates.
Described baffle plate upper limb is provided with frame, and the top cover plate is fixed on this frame with riveted way.
Described top cover plate adopts microperforated panel or foamed aluminium acoustical board.
Described top cover plate adopts microperforated panel, and the diameter of micropunch is 0.8mm, and perforated percentage is 1-2%.
Described top cover plate adopts perforated plate, is filled with the sound absorption mineral wool in the perforation.
Described chassis base is provided with connecting portion and is connected with existing absorbent lined barrier H type column upper end.
The sound barrier top structure of the utility model design, owing to consider the most important and the most unmanageable diffraction sound that solves in the noise transmission, the cavity structure form that has adopted sound absorption material to form, therefore can farthest intercept and absorb noise by top diffraction, and owing to adopt variable cross-section cavity structure form, sound sucting band, thus the noise reduction of sound barrier improved greatly.Owing to the employing of top sound absorber, can reduce the height of sound barrier greatly, saved construction cost, improved noise reduction.In addition because sound absorption materials such as employing foamed aluminium have better weather.This noise barrier top arrangement is simple and light, and is easy for installation, long service life.Can be applied in new sound barrier top, improve the compound noise reduction of noise barrier, reduce the height of sound barrier, reach landscape effect preferably; Be applicable to the other or speedway of the intensive elevated road of townsfolk.Also can be applied to old erect type sound barrier top transformation, improve the noise reduction of original noise barrier.
Description of drawings
Fig. 1: be cross sectional view of the present utility model.
The specific embodiment
Below the effect forming and can produce with regard to the structure of a kind of sound barrier of the utility model top sound absorber, conjunction with figs. is described in detail as follows with preferred embodiment:
As shown in Figure 1, a kind of sound barrier of the utility model top sound absorber is a variable cross-section cavity structure form, it includes framework 2 and top cover plate 4, framework 2 is made up of the vertical baffle plate 22 that a base plate 21 and polylith are used for support top end cover plate 4, framework 2 middle parts be two high baffle plates, both sides then be two low baffle plates.
On baffle plate 22, be provided with frame, baffle plate 22 by frame with the fixing top cover plate 4 of riveted way, make top cover plate 4 be located at the top of framework 2, form three cavity C 1, C2 and C3 jointly by chassis base 21, baffle plate 22 and cover plate 4 like this, because the middle part baffle plate is different with the height of side baffle plate, so the cavity C 2 in the middle of being positioned at is different with the C3 cross sectional shape with the cavity C 1 that is positioned at both sides, makes whole cross section present the variable cross-section state, cavity C 1, C2 and C3 inside are air layer.Described framework can adopt steel sheet to make.
Described top cover plate 4 can adopt perforated plate, microperforated panel or foamed aluminium acoustical board, and the diameter of micropunch is 0.8mm, and perforated percentage is 1-2%.When described top cover plate adopted perforated plate, filling sucting sound material was wanted in perforated plate inside, as materials such as sound absorption rock wools.
Form the utility model sound barrier top sound absorber by above design.This sound barrier top sound absorber can be affixed with existing sound barrier by the base plate 21 of its framework 2, sound barrier top sound absorber symmetry is fixedly arranged on the upper end of the H type column 10 of existing sound barrier as using bolt 11.
In concrete enforcement, framework adopts steel sheet to make, frame size can for: two high heights of baffle plate are 150mm, and two low heights of baffle plate are 78mm, and the framework overall width is 700mm; Baffle edge partly is provided with the frame of 30mm, is used to install and fix cover plate foamed aluminium acoustical board, can connect with the riveted joint mode.Each sound barrier top sound absorber length direction can be 2m, and is consistent at interval with existing sound barrier column.In the sound absorber two bottom sides position corresponding with column, be provided with the M12 bolt hole, sound absorber links to each other with H type column top shown in inciting somebody to action with bolt.In the installation process, place, between baffle plate and the cover plate and the slit between sound absorber and the sound barrier needs sealing, can adopt fluid sealant or rubber seal.
After tested, after existing sound barrier adds the utility model sound absorber, can reduce by 13 to 15 decibels of noises, and the existing sound barrier that does not install sound absorber additional can only reduce by 10 decibels of noises, illustrates to the utlity model has tangible sound absorption reduction effect.
Though the utility model is described by previous embodiment, but still can change its form and details, make not breaking away under the spirit of the present utility model.Aforementioned is the most rational using method of the utility model, one of the mode that can specifically implement for the utility model only, but not as limit.

Claims (7)

1, a kind of sound barrier top sound absorber is characterized in that, be the variable cross-section closed cavity structure of being made up of the different cavity in a plurality of cross sections, and this cavity structure upper surface is that sound absorption material is made.
2, a kind of sound barrier as claimed in claim 1 top sound absorber, it is characterized in that, described cavity structure is made up of framework and the cover plate that is installed in the top, framework is made up of the vertical baffle plate that a base plate and polylith are used for the support top end cover plate, frame mid portion is established two high baffle plates, and both sides are two low baffle plates.
3, a kind of sound barrier as claimed in claim 2 top sound absorber is characterized in that described baffle plate upper limb is provided with frame, and the top cover plate is fixed on this frame with riveted way.
As claim 2 or 3 described a kind of sound barrier top sound absorbers, it is characterized in that 4, described top cover plate adopts microperforated panel or foamed aluminium acoustical board.
5, a kind of sound barrier as claimed in claim 4 top sound absorber is characterized in that, described top cover plate adopts microperforated panel, and the diameter of micropunch is 0.8mm, and perforated percentage is 1-2%.
As claim 2 or 3 described a kind of sound barrier top sound absorbers, it is characterized in that 6, described top cover plate adopts perforated plate, is filled with the sound absorption mineral wool in the perforation.
7, a kind of sound barrier as claimed in claim 1 top sound absorber is characterized in that, described chassis base is provided with connecting portion and is connected with existing absorbent lined barrier H type column upper end.
CNU2008201086387U 2008-06-04 2008-06-04 Noise absorption apparatus on top of acoustical barrier Expired - Lifetime CN201221057Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201086387U CN201221057Y (en) 2008-06-04 2008-06-04 Noise absorption apparatus on top of acoustical barrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201086387U CN201221057Y (en) 2008-06-04 2008-06-04 Noise absorption apparatus on top of acoustical barrier

Publications (1)

Publication Number Publication Date
CN201221057Y true CN201221057Y (en) 2009-04-15

Family

ID=40574568

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201086387U Expired - Lifetime CN201221057Y (en) 2008-06-04 2008-06-04 Noise absorption apparatus on top of acoustical barrier

Country Status (1)

Country Link
CN (1) CN201221057Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102418321A (en) * 2010-09-25 2012-04-18 朴太善 Noise reduction device at top end of sound barrier
CN103119220A (en) * 2010-07-26 2013-05-22 亚尔莫·艾拉克西宁 Wall structure working as a noise barrier for railways and use of the wall structure as a noise or passage barrier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103119220A (en) * 2010-07-26 2013-05-22 亚尔莫·艾拉克西宁 Wall structure working as a noise barrier for railways and use of the wall structure as a noise or passage barrier
CN103119220B (en) * 2010-07-26 2016-08-31 桑蒂姆有限公司 Wall construction and this wall construction as railway noise barrier are as noise or the application of passage barriers
CN102418321A (en) * 2010-09-25 2012-04-18 朴太善 Noise reduction device at top end of sound barrier

Similar Documents

Publication Publication Date Title
CN204370330U (en) A kind of compound sound barrier plate and sound barrier thereof
CN105803965B (en) A kind of broadband sound absorption cell board
CN202595645U (en) Sound barrier suitable for rail transit
CN103526700B (en) A kind of sound barrier
CN201221057Y (en) Noise absorption apparatus on top of acoustical barrier
CN201221058Y (en) V-shaped top noise reducer for acoustical barrier
CN206127908U (en) Sound barrier cell board based on broadband microperforated panel acoustic absorber
CN202500097U (en) Combined sound barrier
CN205857048U (en) A kind of new-type embankment sound barrier
CN203782599U (en) Sharp chopping type metallic sound barrier
CN203855907U (en) Novel sound barrier
CN104727244A (en) Metal and ceramic composite sound barrier sound absorption and insulation unit plate structure
CN204875576U (en) Protective screen is handled to wedge noise
CN205604098U (en) Sound insulation plate for highways
CN202000273U (en) Upright sound absorbing barrier plate
CN204199193U (en) A kind of nonmetal unit board for sound barrier
CN203530871U (en) Sound barrier fixing structure
CN205348021U (en) High -efficient protective screen that gives sound insulation
CN106245549B (en) Urban track traffic sound barrier efficiently absorbs sound cell board and its design method
CN201713768U (en) Connecting structure for sound barrier of high-speed railway
CN204370331U (en) A kind of compound sound barrier
CN201826265U (en) Bottom edge sealing and vibration reduction structure of sound barrier
CN201738253U (en) Integral type acoustic screen
CN202430637U (en) Aluminum perforated sound absorption and insulation plate
CN101725119A (en) Sound barrier for high-speed railway

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20090415