CN201770949U - Wide-top vertical acoustic screen for a high speed railway - Google Patents
Wide-top vertical acoustic screen for a high speed railway Download PDFInfo
- Publication number
- CN201770949U CN201770949U CN2010205214004U CN201020521400U CN201770949U CN 201770949 U CN201770949 U CN 201770949U CN 2010205214004 U CN2010205214004 U CN 2010205214004U CN 201020521400 U CN201020521400 U CN 201020521400U CN 201770949 U CN201770949 U CN 201770949U
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- sound
- sound absorption
- top width
- sound absorbing
- speed railway
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Abstract
The utility model discloses a wide-top vertical acoustic screen for a high speed railway, which is formed by assembling many same sound absorbing and insulating units. The sound absorbing and insulating unit comprises a panel (2), a back plate (3) and a sound absorbing and insulating assembly (4), wherein the sound absorbing and insulating assembly (4) is mounted in a shell cavity composed of the panel (2) and the back plate 93) and the left, right ends of the sound absorbing and insulating unit are snapped onto a shaped steel vertical pole (5) and the upper, lower sound absorbing and insulating units are fastened together by the concave-convex flanges formed by the contact surface and a wide-top cap (1) is fixed on the top of the sound absorbing and insulating unit at the uppermost end and two wings of the wide-top cap (1) extend outwards to form a sound surrounding projection part. The structure is simple, the sound absorbing and insulating effect of the sound screen is increased and especially the diffraction sound resistance of the top of the sound screen is increased.
Description
Technical field
The utility model belongs to the railroad bridge technical field, relates to a kind of top width erect type sound barrier that is used for high-speed railway concretely.
Background technology
Sound barrier is to be used for absorbing and the through sonic propagation in noise isolation source, the sound absorption that between noise source and recipient, is provided with and the shielding harness that insulates against sound, and it is placed in the sound shadow region recipient, and propagation of noise is wherein had isolation effect preferably.Developing rapidly of railway produces a large amount of noise pollutions now, and sound barrier takes up an area of few, and fabrication and installation are convenient and swift, and construction investment is suitable, become the important measures of traffic noise pollution control.
Sound wave runs into that sound barrier can reflect, projection and three kinds of phenomenons of diffraction in communication process.Usually we think that sound barrier can stop through sonic propagation, and make system penetrate sound enough decay are arranged, and the influence of projection sound can be ignored.Therefore, the sound absorption effect of sound barrier generally can adopt the noise abatement amount to represent, it has reflected the ability of the above-mentioned two kinds of shielding entrant sounds of sound barrier.Insert a sound barrier between sound source and receiving station, establish the sound barrier endless, sound wave can only be gone over from the top diffraction of barrier, and forms a sound shadow region thereafter, forms a shade just as light is blocked by object.In this sound shadow region, people can feel that noise has obviously weakened, the noise reduction effect of Here it is sound barrier.
Insert a facility between sound source and recipient, sound wave is propagated a significant additional attenuation, thereby weakens the influence of noise in certain zone at recipient place, and such facility is called as sound barrier.This sound barrier is widely used in countries in the world, developing rapidly of railway especially in recent years, and various countries have also carried out many research to the railway sound barrier, have also carried out deep research and a large amount of practices aspect the design and construction of railway sound barrier.
Sound barrier generally includes by the identical sound absorption unit of a plurality of structures and is formed by connecting, described sound absorption unit comprises panel, backboard, the sound absorption assembly, described sound absorption assembly is installed in the cavity that described panel and backboard form, two ends, the left and right sides, described sound absorption unit are fastened in the shaped steel column, two ends, the left and right sides, described sound absorption unit are connected in the shaped steel column, be interlocked by the formed concavo-convex flanging of contact surface between the sound absorption unit up and down, though sound barrier can stop noise in the use, but still some noise can walk around from the bottom of sound barrier, influences defening effect.
The utility model content
The purpose of this utility model provided a kind of simple in structure, noise is stopped by the top, can improve the top width erect type sound barrier that is used for high-speed railway of the anti-diffraction acoustic energy power at sound barrier top greatly.
The technical solution of the utility model is as follows:
A kind of top width erect type sound barrier that is used for high-speed railway, the sound absorption unit splicing identical by a plurality of structures forms, described sound absorption unit comprises panel, backboard, sound absorption assembly, described sound absorption assembly is installed in the housing cavity that described panel and backboard form, two ends, the left and right sides, described sound absorption unit are connected in the shaped steel column, be interlocked by the formed concavo-convex flanging of contact surface between the sound absorption unit up and down, be positioned at top, described sound absorption unit topmost and be fixed with the top width cap, the protruding formation of the both wings of this top width cap is around the sound protuberance.
Adopt said structure, key is to have set up the top width cap, the protruding formation of the both wings of this top width cap is around the sound protuberance, when bumping, noise and panel rise that will producing noise around the sound protuberance of top width cap stop in the process of walking around the top, further reduce the amount of walking around of noise, thereby reach the purpose that improves soundproof effect.
Described top width cap is fixed on described panel and the formed case top of backboard by rivet.
Described sound absorption assembly is made up of absorbent treatment and soundproof course, and both connect by bolt.
Absorbent treatment and soundproof course play sound absorption and sound insulation effect respectively.
Described absorbent treatment is wrapped up by hydrophobic cloth.
Advantages such as hydrophobic cloth has fire prevention, waterproof, puts tide, ventilative are used for the protection of absorbent treatment
Described sound absorption assembly by upper fastener and down fastener be fixed in the housing cavity that described panel and backboard form.
Beneficial effect: a kind of simple in structure, sound absorption effect that can improve sound barrier of the utility model, especially can improve the anti-diffraction acoustic energy power at sound barrier top.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
The structural representation of Fig. 1 sound barrier;
Fig. 2 has the structural representation of top width cap sound absorption unit for the upper end;
Fig. 3 is the stereogram of Fig. 2;
Fig. 4 is the lateral view of Fig. 1.
The specific embodiment
As Fig. 1,2,3, shown in 4:, a kind of top width erect type sound barrier that is used for high-speed railway, the sound absorption unit splicing identical by a plurality of structures forms, described sound absorption unit comprises panel 2, backboard 3, sound absorption assembly 4, described sound absorption assembly 4 is installed in the housing cavity that described panel 2 and backboard 3 formed, two ends, the left and right sides, described sound absorption unit are connected in the shaped steel column 5, be interlocked by the formed concavo-convex flanging of contact surface between the sound absorption unit up and down, it is characterized in that: be positioned at top, described sound absorption unit topmost and be fixed with top width cap 1, the protruding formation of the both wings of this top width cap 1 is around the sound protuberance.
Described top width cap 1 is fixed on described panel 2 and backboard 3 formed case top by rivet 1a.
Described sound absorption assembly 4 is made up of absorbent treatment 4a and soundproof course 4b, and both connect by bolt 4c.
Described absorbent treatment 4a is wrapped up by hydrophobic cloth 4d.
Described sound absorption assembly 4 by upper fastener 6 and down fastener 7 be fixed in the housing cavity that described panel 2 and backboard 3 formed.
Claims (5)
1. top width erect type sound barrier that is used for high-speed railway, the sound absorption unit splicing identical by a plurality of structures forms, described sound absorption unit comprises panel (2), backboard (3), sound absorption assembly (4), described sound absorption assembly (4) is installed in the housing cavity that described panel (2) and backboard (3) formed, two ends, the left and right sides, described sound absorption unit are connected in the shaped steel column (5), be interlocked by the formed concavo-convex flanging of contact surface between the sound absorption unit up and down, it is characterized in that: be positioned at top, described sound absorption unit topmost and be fixed with top width cap (1), the protruding formation of both wings of this top width cap (1) is around the sound protuberance.
2. a kind of top width erect type sound barrier that is used for high-speed railway according to claim 1 is characterized in that: described top width cap (1) is fixed on described panel (2) and the formed case top of backboard (3) by rivet (1a).
3. a kind of top width erect type sound barrier that is used for high-speed railway according to claim 1 and 2, it is characterized in that: described sound absorption assembly (4) is made up of absorbent treatment (4a) and soundproof course (4b), and both connect by bolt (4c).
4. a kind of top width erect type sound barrier that is used for high-speed railway according to claim 3, it is characterized in that: described absorbent treatment (4a) is wrapped up by hydrophobic cloth (4d).
5. a kind of top width erect type sound barrier that is used for high-speed railway according to claim 4 is characterized in that: described sound absorption assembly (4) by upper fastener (6) and down fastener (7) be fixed in the housing cavity that described panel (2) and backboard (3) formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205214004U CN201770949U (en) | 2010-09-08 | 2010-09-08 | Wide-top vertical acoustic screen for a high speed railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205214004U CN201770949U (en) | 2010-09-08 | 2010-09-08 | Wide-top vertical acoustic screen for a high speed railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201770949U true CN201770949U (en) | 2011-03-23 |
Family
ID=43750792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205214004U Expired - Fee Related CN201770949U (en) | 2010-09-08 | 2010-09-08 | Wide-top vertical acoustic screen for a high speed railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201770949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2010
- 2010-09-08 CN CN2010205214004U patent/CN201770949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20180908 |