CN104674687A - Sound absorption and load reduction sound barrier unit and sound barrier thereof - Google Patents
Sound absorption and load reduction sound barrier unit and sound barrier thereof Download PDFInfo
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- CN104674687A CN104674687A CN201510077220.9A CN201510077220A CN104674687A CN 104674687 A CN104674687 A CN 104674687A CN 201510077220 A CN201510077220 A CN 201510077220A CN 104674687 A CN104674687 A CN 104674687A
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Abstract
The invention relates to the technical field of sound barriers, in particular to a sound absorption and load reduction sound barrier unit and a sound barrier thereof. The sound absorption and load reduction sound barrier unit comprises a shell, a sound absorption material filled cavity and connecting ends, wherein the sound absorption material filled cavity is in the shell; the sound absorption and load reduction sound barrier unit is characterized in that the shell comprises an upper cover plate, a lower cover plate, a rear back plate and a front panel; a sunken part which is sunken towards the interior of the sound absorption material filled cavity is formed in the lower cover plate; a protrusion part which protrudes towards the exterior of the sound absorption material filled cavity is formed on the upper cover plate; through holes are respectively formed in the front panel and the lower cover plate; the connecting ends are respectively in insert connection with the ends of the shell; after insert connection, an unfilled space is formed. The sound absorption and load reduction sound barrier unit has the beneficial effects that the structure is simple, production and transportation are convenient, inspection and maintenance are convenient, and the manufacturing cost is low; the running noise of a high speed railway train can be effectively absorbed, and moreover, the pulsating pressure acting on the sound barrier by air motion in the high-speed running process of the train can be effectively reduced; the service lives of the sound barrier and railway bridges are prolonged.
Description
Technical field
The present invention relates to sound barrier technical field, particularly one sound absorption off-load formula sound barrier unit and sound barrier thereof, be applicable to high-speed railway noise reduction technology field.
Background technology
Along with the fast development of China Express Railway, the high speed rail train operation noise problem that disturbs residents is day by day serious.In order to prevent bullet train from running the interference that produces surrounding environment of noise, arranging sound barrier in high-speed railway both sides to stop noise transmission is a kind of effective ways of protection of the environment.The sound barrier that current domestic high-speed railway uses generally adopts board plug type, namely installs equidistant H profile steel column in high-speed railway both sides, then between column, inserts vertically superposed polylith unit board.The structure of every module unit plate is aluminium alloy panel, aluminum alloy back plate, settles fiber cement board between aluminium alloy panel and aluminum alloy back plate, and fiberboard front is adhesively fixed sound absorption material.Panel (front) rushes solid matter hole in order to sound absorption, and backboard (below) not perforate is in order to sound insulation.Sound barrier wall is combined into reach sound absorption, sound insulation effect by polylith unit board.
High speed railway sound barrier is except should having good acoustical behavior, the more important thing is that the aerodynamic noise and its positive and negative pressure fluctuation meter that are adapted to be formed with train running speed are on the impact of sound barrier, but, because the distance between railway sound barrier and railroad track is less, the each unit piece forming railway sound barrier subjects the air pressure load of larger pulsation, under the effect of this load, unary housing is easy to deform on the one hand, this not only can affect the aesthetics of railway sound barrier, but also can affect its defening effect, on the other hand, under the effect of the air pressure load of pulsation, the housing of railway sound barrier also can vibrate, and the vibration of housing can produce quadratic noise, and this have impact on the sound insulation property of railway sound barrier further, patent CN201020524079.5 discloses a kind of high speed railway sound barrier unit piece, comprise by upper cover plate (2), lower cover (4), postnotum (3), front panel (7), the housing that left plate (1) and right plate are formed, and be arranged at the sound absorption material plate (5) of described enclosure interior, it is characterized in that, also comprise U-shaped link (6), described U-shaped link (6) is arranged in described housing, and by linkage and described front panel (7), described upper cover plate (2), described postnotum (3) is connected with described lower cover (4).The high speed railway sound barrier unit piece provided, because its enclosure interior is provided with U-shaped link, thus provide certain support force for housing, enhance the ability of unit piece housing opposing external load function, thus reduce the deflection of unit piece housing under the effect of pulsed air pressure, but this patent structure strengthens anti-air load ability from arranging of internal construction, will increase the complexity of structure and the increase of cost.
It is larger that current high speed railway sound barrier surface is subject to train pneumatic load.Existing sound barrier can not carry out row to effect and the train pneumatic load on its surface and subtract, and huge train pneumatic load can cause waving of sound barrier and rock.Long-term under the effect of train pneumatic load, easily occur that connection loosens, or even the situation that structural deterioration comes off, traffic safety is constituted a threat to.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the sound absorption off-load sound barrier unit that a kind of structure is simple, overhaul convenience, low cost of manufacture is provided; The housing of described sound barrier unit has the ability reducing external load function preferably, and the deflection under external load function is less, has again good sound absorption effect simultaneously.Another object of the present invention is to provide a kind of sound barrier comprising above-mentioned sound absorption off-load sound barrier unit.
One sound absorption off-load sound barrier unit provided by the invention, adopts following technical proposals to realize:
A kind of sound absorption off-load sound barrier unit, comprise shell, chamber filled by sound absorption material in shell, connection end, it is characterized in that: described shell comprises upper cover plate, lower cover, postnotum and front panel, described lower cover is formed fills the depressed part of chamber sunken inside or the lug boss to sound absorption material filling chamber outer lug to sound absorption material, described upper cover plate is formed fills the lug boss of chamber outer lug or the depressed part of oriented sound absorption material filling chamber sunken inside to sound absorption material, and described upper cover plate and described lower cover realize male-female engagement; Described front panel and described lower cover are provided with through hole; The termination grafting of described connection end and described shell, has non-packing space after grafting; The height to width ratio in described sound absorption off-load sound barrier unit cross section is 1: 10-10: 1.
One sound absorption off-load sound barrier unit provided by the invention, can also comprise following technical proposals:
Wherein, the depressed part of described lower cover and the lug boss of described upper cover plate are arrowhead form.
Wherein, described shell is tubular double-head arrow shape.
Wherein, described sound absorption material is filled chamber and is filled with sound absorption material and below sound absorption material above; Described sound absorption material kind is two or more; Described sound absorption material be in aluminum fiberboard, rock wool, glass silk flosssilk wadding, foaming aluminum, foam ceramic material any two or appoint several.
Wherein, described connection end comprises the lock chamber for fixed housing, the boss of the grafting that can cooperatively interact and groove; Described lock chamber comprises fixed bar and sidewall.
Wherein, the material of described connection end and/or described housing is aluminum alloy materials, by aluminium sheet die cast.
Wherein, described through hole be in circle, rhombus, ellipse, strip any one or appoint several; The diameter of described manhole is 1mm-10mm.
Present invention also offers a kind of sound absorption off-load sound barrier, adopt following technical proposals to realize:
A kind of sound absorption off-load sound barrier, comprises sound absorption off-load sound barrier unit, H profile steel column, it is characterized in that: described sound absorption off-load sound barrier unit is the arbitrary described sound absorption off-load sound barrier unit of technique scheme; Multiple sound barrier unit is enumerated up and down and is plugged on H profile steel column, by connection end two end supports make sound barrier unit up and down between be formed with non-straight-through penetrating gap from front panel to rear board.
One sound absorption off-load sound barrier provided by the invention, can also comprise following technical proposals:
Wherein, described penetrating gap is 30-50mm.
Wherein, the wide 1800-2300mm of described sound barrier, high 2000-2600mm.The enforcement of technical solution of the present invention comprises following technique effect:
One sound absorption off-load sound barrier unit provided by the invention, uses the mode of connection end and the grafting of sound barrier unit, structure is simple, be convenient to production and transport, maintenance conveniently, low cost of manufacture.By connection end two end supports make sound barrier unit up and down between be formed with the structure in the non-straight-through penetrating gap from front panel to postnotum, sound barrier unit is made not need to bear the compression weight of multiple unit board, sound barrier unit uniform force in sound barrier, large-sized sound barrier can be made, reduce the use of H profile steel column, thus reduce cost of production; And good fixing effect; Can reach wide 2000mm, the sound barrier size of high 2150mm, has good promotional value.Tubular saddle type high-speed railway off-load sound barrier unit of the present invention is arranged on high-speed railway both sides by H profile steel post fixed Combination, can effectively absorb high speed rail train operation noise, and effectively can reduce train process air flow action of running at high speed and be used in pressure fluctuation meter on sound barrier, improve the application life of sound barrier and railroad bridge.Can to absorb sound and can the effect of off-load to reach high speed railway sound barrier, noise reduction coefficient can reach more than 0.9, reaches and prevents noise transmission, the object of protection of the environment.
The present invention changes the sound barrier form of solid material in the past, is the sound absorption unit with permeability that the tubular structure having sound absorption and sound insulation property concurrently is combined into by Sound Barrier Design.When bullet train is by off-load sound absorption formula noise barrier structure of the present invention, between sound absorption unit, reasonably the train pneumatic load subtracting and act on sound barrier surface effectively can be arranged in gap.And the shell mechanism in the present invention Anomalistic space gap (such as double-head arrow shape) of adopting the depressed part of the described lower cover of double-head arrow shape and the lug boss of described upper cover plate to be formed, when high velocity air to enter after spatial joint clearance reaches the effect of off-load through the through hole of front panel, irregular spatial joint clearance (such as double-head arrow shape) can change airflow direction, from the through hole of lower cover enter sound absorption material thus reach can absorb sound while again can the object of off-load.Ensure that the stability of sound barrier under the condition of all weather operations, ensure the operation security of high-speed railway.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention sound absorption off-load sound barrier unit front schematic view
Fig. 2 is embodiment of the present invention sound absorption off-load sound barrier unit section schematic diagram
Fig. 3 is embodiment of the present invention connection end structural representation
Fig. 4 is the noise barrier structure side schematic view of embodiment of the present invention sound absorption off-load sound barrier unit assembling
Fig. 5 is the noise barrier structure front schematic view of embodiment of the present invention sound absorption off-load sound barrier unit assembling
Fig. 6 is the noise barrier structure side partial schematic diagram of embodiment of the present invention sound absorption off-load sound barrier unit assembling
Fig. 7 is the noise barrier structure front partial schematic diagram of embodiment of the present invention sound absorption off-load sound barrier unit assembling
1, shell; 10, upper cover plate; 11, lower cover; 12, postnotum; 13, front panel; 14, depressed part; 15, lug boss; 2, connection end; 20, boss; 21, groove; 22, fixed bar; 23, sidewall; 3, through hole; 4, H profile steel post; 5, sound absorption material below; 6, sound absorption material above; 7, non-packing space; 8, sound barrier unit; 9, penetrating gap.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail, it is pointed out that described embodiment is only intended to be convenient to the understanding of the present invention, and any restriction effect is not play to it.
Be embodiment of the present invention sound absorption off-load sound barrier unit front schematic view see Fig. 1, Fig. 2 is embodiment of the present invention sound absorption off-load sound barrier unit sectional view.A kind of sound absorption off-load sound barrier unit, comprise shell 11, chamber filled by sound absorption material in shell 11, connection end 2, described shell 11 comprises upper cover plate 10, lower cover 11, postnotum 12 and front panel 13, described lower cover 11 is formed fills the depressed part 14 of chamber sunken inside or the lug boss to sound absorption material filling chamber outer lug to sound absorption material, described upper cover plate 10 is formed to filling the lug boss 15 of chamber outer lug to sound absorption material or filling the depressed part of chamber sunken inside to sound absorption material, and described upper cover plate and described lower cover realize male-female engagement; One embodiment can be, and described lower cover 11 is formed with the depressed part 14 of filling chamber sunken inside to sound absorption material, and described upper cover plate 10 is formed with the lug boss 15 to filling chamber outer lug to sound absorption material; Its another embodiment can be described lower cover 11 and is formed with the lug boss of filling chamber outer lug to sound absorption material, and described upper cover plate 10 is formed with the depressed part of filling chamber sunken inside to sound absorption material; Its third embodiment can be described sound absorption unit and comprises two pieces of shells, the described lower cover 11 of one piece of shell and described upper cover plate 10 are all formed with the lug boss of filling chamber outer lug to sound absorption material, the described lower cover 11 of another block shell and described upper cover plate 10 are all formed with the depressed part of filling chamber sunken inside to sound absorption material, and two pieces of shells cooperatively interact; As shown in Figure 2, the depressed part 14 of described lower cover 11 is arrowhead form, arc or many arrow-shaped with the lug boss 15 of described upper cover plate 10, and the preferred described shell 1 of the present embodiment is tubular double-head arrow shape; Can form the non-straight all saturating gap of front panel 13 to postnotum 12, realize the object of the present embodiment off-load air-flow load sound absorption, the present invention does not do any restriction to shape; Described sound absorption material is filled chamber and is filled with sound absorption material 6 and below sound absorption material 5 above; Described sound absorption material kind is two or more; The present embodiment is 2 kinds of materials preferably, are divided into sound absorption material 6 and below sound absorption material 5 above as shown in Figure 2, described sound absorption material be in aluminum fiberboard, rock wool, glass silk flosssilk wadding, foaming aluminum, foam ceramic material any two or appoint several; The preferred aluminum fiberboard of the present embodiment and rock wool, cylindrical case 1 inside is placed two or more damping materials and is combinationally used, and effectively can improve the sound-absorbing effect of sound barrier unit 8; In schematic diagram accompanying drawing 2, sound absorption material 6 and the blank space below between sound absorption material 5 are the signal at bi-material interface above; The material of described connection end 2 and/or described housing is aluminum alloy materials, and by aluminium die cast, quality is light, easy installation and transportation; The height to width ratio in off-load sound barrier unit cross section of absorbing sound described in the present embodiment is 1: 10-10: 1.
Described front panel 13 and described lower cover 11 are provided with through hole 3; Described through hole 3 can be any one in circle, rhombus, ellipse, strip or appoints several; The circular punching of the preferred solid matter of the present embodiment, the diameter of described through hole 3 can elect 1mm-10mm as; The preferred 2.8mm of the present embodiment; Described through hole 3 can make sound absorb in unit board cavity by solid matter hole, with absorb by the damping material of its inside; Described connection end 2 can with the broken end grafting at described shell 1 two ends, there is after grafting non-packing space 7; Non-packing space 7 is there is after connecting broken end and shell 1 grafting, when being assembled into sound barrier wall, each unit board is enumerated up and down and is made the penetrating gap 9 forming 30 ~ 50mm interval between sound barrier unit about 8 to form off-load sound barrier sound-absorbing wall (as shown in Figure 4, Figure 5 and Figure 6) by connection end 2 in two end supports, during for high-speed railway field, described penetrating gap 9 is 30-45mm preferably, the optional 30mm of concrete numerical value, 35mm, 40mm, 45mm, 50mm, can select according to the size of air-flow loading force and noise reduction coefficient; Above-mentioned sound barrier unit 8 is set to upper and lower multiple unit and enumerates combining structure, is plugged on composition sound barrier protecting wall in H profile steel post 4H type groove and uses; Not only to absorb sound but also can the effect of off-load to reach.
Connection end 2 described in the present embodiment comprises the lock chamber for fixed housing 1, the boss 20 of the grafting that can cooperatively interact and groove 21, and the structure of described lock chamber comprises fixed bar 22 and sidewall 23; Described lock chamber and have void space between described boss 20 and described groove 21, is formed with non-packing space 7 after grafting shell 1.Be one embodiment of the invention connection end 2 structural representation see Fig. 3; Described fixed bar 22 and sidewall 23 and supporting bable tops form right angle triangle, thus form right-angled triangle spatial joint clearance, also can form Anomalistic space gap.
In the present embodiment, described shell is described as upper cover plate, lower cover, postnotum and front panel, it is not the restriction of four panel connecting structures to described shell, just to the convenience that structure describes, described shell can be plurality of plates splicing, can be also entire plate die cast be multi-plane structure; In the present embodiment, preferred aluminium sheet integral die-cast is shaping; There is light weight, advantage that productivity effect is high.
Hole between the present embodiment double-head arrow type off-load sound absorption sound barrier unit 8 allow air-flow by thus reduction bullet train by time the Pneumatic pressure that produces, the noise that its non-clear opening gap coordinates the design of sound absorption unit that train operation is produced simultaneously can not directly spread out of, and makes the sound barrier after perforate and conventional acoustic barrier possess equal noise reduction.Whole sound absorption unit can ensure while air-flow passes through, and makes noise significantly cutting down by during hole.
See the noise barrier structure side schematic view that Fig. 4 is the assembling of embodiment of the present invention sound absorption off-load sound barrier unit; Fig. 5 is the noise barrier structure front schematic view of embodiment of the present invention sound absorption off-load sound barrier unit assembling; Fig. 6 and Fig. 7 is the noise barrier structure partial schematic diagram of embodiment of the present invention sound absorption off-load sound barrier unit assembling.The present embodiment additionally provides a kind of sound absorption off-load sound barrier, comprises sound absorption off-load sound barrier unit 8, H profile steel column, described sound absorption off-load sound barrier unit 8 is the off-load sound barrier unit 8 that absorbs sound described in above-described embodiment; Multiple sound barrier unit about 8 is enumerated and is plugged on H profile steel column, is made the non-straight-through penetrating gap 9 be formed with between sound barrier unit about 8 from front panel 13 to postnotum 12 by connection end 2 in two end supports; The off-load sound barrier that absorbs sound described in the present embodiment is specially adapted to high-speed railway field; Sound absorption off-load is effective.Sound barrier unit 8 uniform force in the present embodiment sound barrier, can make large-sized sound barrier, reduces the use of H profile steel column, thus reduces cost; The wide 2000mm of sound barrier described in the present embodiment, high 2150mm.
One that the present embodiment provides sound absorption off-load sound barrier, by connection end 2 is symmetricly set on unit board shell 1 two ends, play the effect being connected and fixed unit board, and connection end 2 plug-in unit plate two ends are firmly fastening.Connection end 2 be above designed to boss 20, be designed to groove 21 below, above boss 20 cooperatively interact can enumerate up and down with lower recess 21 size, enumerated the sound barrier wall of composition certain altitude by multiple sound barrier unit about 8.Sound barrier unit 8 described in the present embodiment is enumerated up and down by multiple unit and is combinationally used, and can form the sound barrier wall of many gauge height.Be arranged on high-speed railway both sides and play the effect stoping noise transmission, protection of the environment.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although done to explain to the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (10)
1. a sound absorption off-load sound barrier unit, comprise shell, chamber filled by sound absorption material in shell, connection end, it is characterized in that: described shell comprises upper cover plate, lower cover, postnotum and front panel, described lower cover is formed fills the depressed part of chamber sunken inside or the lug boss to sound absorption material filling chamber outer lug to sound absorption material, described upper cover plate is formed fills the lug boss of chamber outer lug or the depressed part of oriented sound absorption material filling chamber sunken inside to sound absorption material, and described upper cover plate and described lower cover realize male-female engagement; Described front panel and described lower cover are provided with through hole; The termination grafting of described connection end and described shell, has non-packing space after grafting; The height to width ratio in described sound absorption off-load sound barrier unit cross section is 1: 10-10: 1.
2. one sound absorption off-load sound barrier unit according to claim 1, is characterized in that: the depressed part of described lower cover and the lug boss of described upper cover plate are arrowhead form.
3. one sound absorption off-load sound barrier unit according to claim 1, is characterized in that: described shell is tubular double-head arrow shape.
4. one sound absorption off-load sound barrier unit according to claim 1, is characterized in that: described sound absorption material is filled chamber and is filled with sound absorption material and below sound absorption material above; Described sound absorption material kind is two or more; Described sound absorption material be in aluminum fiberboard, rock wool, glass silk flosssilk wadding, foaming aluminum, foam ceramic material any two or appoint several.
5., according to claim 1-4 arbitrary described one sound absorption off-load sound barrier unit, it is characterized in that: described connection end comprises the lock chamber for fixed housing, the boss of the grafting that can cooperatively interact and groove; The structure of described lock chamber comprises fixed bar and sidewall.
6. one sound absorption off-load sound barrier unit according to claim 5, is characterized in that: the material of described connection end and/or described housing is aluminum alloy materials, by aluminium sheet die cast.
7. one sound absorption off-load sound barrier unit according to claim 5, is characterized in that: described through hole be in circle, rhombus, ellipse, strip any one or times several; The diameter of described manhole is 1mm-10mm.
8. absorb sound an off-load sound barrier, comprises sound absorption off-load sound barrier unit, H profile steel column, it is characterized in that: described sound absorption off-load sound barrier unit is the arbitrary described sound absorption off-load sound barrier unit of claim 1-7; Multiple sound barrier unit is enumerated up and down and is plugged on H profile steel column, by connection end two end supports make sound barrier unit up and down between be formed with non-straight-through penetrating gap from front panel to rear board.
9. one sound absorption off-load sound barrier according to claim 8, is characterized in that: described penetrating gap is 30-50mm.
10. one sound absorption off-load sound barrier according to claim 8, is characterized in that: the wide 1800-2300mm of described sound barrier, high 2000-2600mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510077220.9A CN104674687B (en) | 2015-02-12 | 2015-02-12 | A kind of sound absorption off-load sound barrier unit and its sound barrier |
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| CN201510077220.9A CN104674687B (en) | 2015-02-12 | 2015-02-12 | A kind of sound absorption off-load sound barrier unit and its sound barrier |
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| CN104674687B CN104674687B (en) | 2017-03-08 |
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| CN107794850A (en) * | 2016-08-31 | 2018-03-13 | 安平县亚荣星环保科技有限公司 | It is a kind of that there is the sound barrier for surveying function of making an uproar |
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| CN104674687B (en) | 2017-03-08 |
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