CN103526700A - Acoustic barrier - Google Patents
Acoustic barrier Download PDFInfo
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- CN103526700A CN103526700A CN201310515863.8A CN201310515863A CN103526700A CN 103526700 A CN103526700 A CN 103526700A CN 201310515863 A CN201310515863 A CN 201310515863A CN 103526700 A CN103526700 A CN 103526700A
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- acoustic
- backboard
- sound barrier
- barrier
- acoustical board
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- 230000004888 barrier function Effects 0.000 title claims abstract description 72
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000011148 porous material Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 16
- 239000007767 bonding agent Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 22
- 238000010276 construction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 3
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- 239000007769 metal material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- SOROIESOUPGGFO-UHFFFAOYSA-N diazolidinylurea Chemical compound OCNC(=O)N(CO)C1N(CO)C(=O)N(CO)C1=O SOROIESOUPGGFO-UHFFFAOYSA-N 0.000 description 1
- 229960001083 diazolidinylurea Drugs 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention discloses an acoustic barrier comprising supporting rib columns, acoustic boards and a back board. A hollow structure is formed between the acoustic boards and the back board, and the supporting rib columns are fixedly bonded on a railway foundation. The acoustic boards are microporous ceramic composite boards with three-dimensional meshy pore structures in disordered communication. The acoustic barrier composed of the supporting rib columns, the acoustic boards and the back board has a camber surface, and the concave direction of the camber surface faces to a railway train operation surface. The lower edge of the back board extends out of the bottom ends of the supporting rib columns. The acoustic barrier is of a three-layer hollow acoustic-absorption acoustic structure, and the microporous ceramic composite boards adopted as the acoustic boards not only have an excellent noise reduction function but also have better processability; the noise-reduction acoustic barrier of the camber-surface structure has better acoustic absorption and reflection properties, and escaped noise can be further reduced. Tests prove that the acoustic barrier has better acoustic absorption performance, and is high in acoustic absorptivity, wide in acoustic absorption frequency band and low in low-frequency acoustic absorption effect. A prefabricated structure of the acoustic barrier is more convenient to process and install, and higher in construction efficiency.
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 sound barrier that is applied to high-speed railway.
Background technology
Sound barrier is the facility inserting between sound source and recipient, makes Acoustic Wave Propagation have a significant additional attenuation, thereby weakens the influence of noise in the certain area at recipient place.
The sound absorption material that high-speed rail sound barrier is used, is first that its sound absorbing capabilities will meet noise barrier structure designing requirement, its noise reduction coefficient NRC>
0.5; As the sound absorption material of open air use, also should there is good mechanical performance and weatherability, can bear train aerodynamic-force and wind load acting in conjunction, also want to have stood wind and weather, sun solarization, water-fast, heat-resisting, resistance toly moltenly freeze, prevent fires and do not pollute the environment; By functional performance requirement, first-selected metal material, there are aluminum fiber acoustic board, aluminum foam acoustical board, the sound absorption material of these metal materials not only has good sound absorbing capabilities, the noise reduction coefficient of 50-100mm cavity is greatly about 0.60-0.80, and has excellent physical and mechanical property, and material property is stable, after long-term use, variation is very little, but cost is higher.Inorganic Non-metallic Materials has foamed cement acoustical board, rock wool acoustical board and pearl stone sound absorbing baffle etc., these inorganic material fire prevention, anti-corrosion, but its matter is crisp, sound absorbing capabilities is poor.For guaranteed strength and sound absorbing capabilities, these acoustical board thickness are larger, material moisture absorption after rain, and contained humidity evaporation is very slow, and dry needs are for a long time.The acoustical board that these materials are made is difficult for processing, and Diazolidinyl Urea.Therefore, its application also has limitation.In addition also have organic foam material also once for sound barrier, but it is poor to be limited to fire line, intensity is low, progressively exits.
Sound barrier research not only selects to have larger development at material property, the research that noise barrier structure is also being deepened continuously, single metal material or the Inorganic Non-metallic Materials structure of the many employings of existing noise barrier structure, and the space of a whole page does not design according to high-speed railway feature, on installation, fixed structure, do not further consider site operation needs yet, more do not have to carry out comprehensive technology exploration to adapt to the noise abatement needs of requirements at the higher level in conjunction with the new material of development.
Summary of the invention
The present invention discloses a kind of sound barrier according to the deficiencies in the prior art.The object of the invention is to provide a kind of adopt that new sound insulation materials and noise barrier structure make be applicable to high-speed railway noise abatement, have the sound barrier of better sound insulation value, more convenient mounting structure.
The present invention is achieved through the following technical solutions:
Sound barrier comprises along rail diatom and continues spaced ribs post, ribs post is fixedly mounted in railway foundation structure, wherein: between every two ribs posts, railways train operation face one side is mounted with acoustical board, the back side one side is mounted with backboard, between acoustical board and backboard, forms hollow structure.
Described acoustical board is the micropore ceramics composite plate with the three-dimensional netted pore structure of unordered connection, and micropore size is 0.5 to 100 micron.
The sound barrier that described ribs post and acoustical board and backboard form is cambered surface, and the concave direction of cambered surface is towards railways train operation face, and cambered surface radius is 12 ± 0.5 meters.
Described backboard lower edge stretches out ribs post bottom.
Described ribs post and acoustical board and backboard respectively by bolt or/and bonding agent be connected and fixed.
Described acoustical board and backboard are respectively detachable combining structure.
Described backboard adopts RPC material to make; Ribs post also adopts RPC material to make.
Sound barrier of the present invention is specially adapted to high-speed railway noise abatement.Sound barrier of the present invention is arranged on high speed railway foundation, and roadbed can be that railway box beam can be also basis, ground, and the both sides of sound barrier downline arrange.It is that ribs post and railway bed are connected and fixed that above-mentioned ribs post arranges along rail diatom continuity interval, while arranging according to the size dimension of acoustical board and backboard by prefabricated ribs intercolumniation every being fixed on railway bed, then prefabricated acoustical board and backboard are arranged on to the sound barrier wall that two sides, ribs post front and back forms continuity, acoustical board is arranged on railways train operation face one side, backboard is arranged on the back side one side, between acoustical board and backboard, forms hollow structure.
The present invention adopts the micropore ceramics composite plate of the three-dimensional netted pore structure with unordered connection as acoustical board, and micropore size is 0.5 to 100 micron.Ultramicropore sound absorption ceramic composite plate is compared with other porous absorption material, sound absorbing capabilities is good, strength and stiffness are higher, dimensionally stable, do not need armour layer, sqound absorption construction is simple, easy for installation, and the noise reduction that is specially adapted to the underground buildings such as the antinoise barriers such as speedway, railway, city elevated railways, light rail transit and tunnel, underground garage, underground store is used.The noise that train operation produces is first through acoustical board noise reduction significantly, then the hollow cavity between acoustical board and backboard reflects further noise reduction energy-absorbing, through verification test sound barrier of the present invention, has more excellent anti-acoustic capability.
The present invention, in conjunction with the three layer construction of sound barrier and the performance characteristics of acoustical board, is designed to cambered surface by sound barrier contour structures, and the concave surface of cambered surface is towards railways train operation face, and by cambered surface radius for being designed to 12 ± 0.5 meters.Cambered surface has better sound-absorbing, reflecting properties, can further reduce noise excessive.
Ribs post of the present invention, acoustical board and backboard be prefabricated rear on-the-spot installation all, and convenient construction, has improved efficiency; Acoustical board and backboard adopt the structure of detachable combination, have reduced installation difficulty, facilitate transport of materials, have reduced engineering cost.
The present invention adopts the sound-absorbing noise barrier structure of three layers of hollow, has further strengthened sound absorption reduction ability; Abatvoix adopts micropore ceramics composite plate, not only has excellent decrease of noise functions, and micropore ceramics composite plate also has better processing characteristics; Noise reduction barrier adopts globoidal structure to have better sound-absorbing, reflecting properties, can further reduce noise excessive.Prove that after testing sound barrier of the present invention has better sound absorption qualities, sound absorption coefficient is high, acoustic frequency bandwidth, and effect of low-frequency sound absorption is good, and its noise frequency division regulation effect is remarkable; Sound barrier precast construction processing of the present invention is installed more convenient, and efficiency of construction is higher.
Accompanying drawing explanation
Fig. 1 is noise barrier structure schematic diagram of the present invention;
Fig. 2 is noise barrier structure schematic side view of the present invention;
Fig. 3 is noise barrier structure front schematic view of the present invention;
Fig. 4 is sound barrier installment state structural representation of the present invention;
Fig. 5 is sound barrier of the present invention and beam-and-rail mounting structure schematic diagram;
Fig. 6 is existing sound barrier installment state structural representation.
In figure, the 1st, ribs post, the 2nd, acoustical board, the 3rd, backboard, the 4th, hollow structure, the 6th, railway basis, the 7th, ballast aggregate, the 8th, track, the 9th, sleeper, the 10th, existing shield, the 11st, existing sound barrier.
The specific embodiment
Below by embodiment, the present invention is specifically described; the present embodiment is only for being further detailed the present invention; but 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.
In conjunction with Fig. 1 to Fig. 5.
As shown in the figure, sound barrier comprises along rail diatom and continues spaced ribs post 1, ribs post 1 is fixedly mounted in 6 structures of railway basis, between every two ribs posts 1, railways train operation face one side is mounted with acoustical board 2, the back side one side is mounted with backboard 3, between acoustical board 2 and backboard 3, forms hollow structure.
As shown in the figure, ribs post 1 is cambered surface with the sound barrier that acoustical board 2 and backboard 3 form, and the concave surface of cambered surface is towards railways train operation face, and cambered surface radius is 12 ± 0.5 meters.
Ribs post 1 and acoustical board 2 and backboard 3 respectively by bolt or/and bonding agent be connected and fixed.
As shown in Figure 1, Figure 2 and Figure 3, Fig. 1 has represented the sound barrier perspective view that two ribs posts 1 and acoustical board 2 and backboard 3 constitute; Fig. 2 has represented noise barrier structure schematic side view; Fig. 3 has represented two groups of noise barrier structure schematic diagrames that three ribs posts 1 and acoustical board 2 and backboard 3 constitute; When practical application, can sound barrier be set along rail diatom both sides Hold.Visible in figure, prefabricated acoustical board 2 and backboard 3 are arranged on to the sound barrier wall that ribs post 1 two sides, front and back forms continuity, acoustical board 2 is arranged on railways train operation face one side, and backboard 3 is arranged on the back side one side, between acoustical board 2 and backboard 3, forms hollow structure.This routine acoustical board 2 adopts five groups of combinations in one group of noise barrier structure, is about to five prefabricated acoustical boards, 2 combinations fixing with ribs post 1, equally that five prefabricated backboards 3 are fixing with ribs post 1, forms sound barrier.Fixed form can adopt bolt to fix; Bonding agent is adhesively fixed, and bonding agent can adopt epoxy resin adhesive; The fixed form that also can adopt bolt and bonding agent simultaneously to use fixedly time, is used bonding agent at each connecting portion with connecting bolt simultaneously.Above-mentioned being fixedly connected with comprises being connected and fixed of ribs post 1 and acoustical board 2 and backboard 3, also comprises being connected and fixed between acoustical board 2 and between backboard 3.
As shown in Figure 4, Figure 5, Fig. 4 is sound barrier installment state structural representation of the present invention; Fig. 5 is sound barrier of the present invention and beam-and-rail mounting structure schematic diagram.Sound barrier can be arranged on to be built in ground and is erected in railway basis 6 structures on bridge.Sound barrier of the present invention is arranged in high-speed railway subgrade 6 structures, and in Fig. 5, roadbed is railway box beam, is basis, ground in Fig. 4, and the both sides of sound barrier downline arrange.Ribs post 1 arranges along rail diatom continuity interval, prefabricated ribs post 1 and railway bed are connected and fixed, while arranging, according to the size dimension of acoustical board 2 and backboard 3, prefabricated ribs post 1 interval is fixed in 6 structures of railway basis, then prefabricated acoustical board 2 and backboard 3 is arranged on to the sound barrier wall that ribs post 1 two sides, front and back forms continuity.Ribs post 1 can be cast-in-situ concrete consolidation structure mode with the fixed form on railway basis 6, can be also other frame modes.
As shown in Fig. 1 to Fig. 5 and Fig. 6, noise barrier structure of the present invention stretches out ribs post 1 bottom by backboard 3 lower edges, and railway basis 6 outer sides are covered.In existing noise barrier structure, normally existing sound barrier 11 is fixed on the existing shield 10 that is arranged at railway basis 6 outer sides to its complex structure, need to repeatedly construct, and existing sound barrier 11 is bolted mode, and maintenance cost is high, has potential safety hazard.Structure of the present invention is cancelled shield structure, one-shot forming is fixed with railway basis 6 structures by ribs post 1, backboard 3 and ribs post 1 are connected and fixed and backboard 3 lower edges are stretched out to ribs post 1 bottom by the 6 outer sides coverings of railway basis, structure is more excellent, constructs more convenient.In Fig. 6, existing sound barrier 11 is bolted on existing shield 10, and existing shield 10 is fixed by concrete and railway basis 6 structures.
| Frequency/Hz | 100 | 125 | 160 | 200 | 250 | 315 | 400 | 500 | 630 | 800 |
| Sound absorption coefficient | 0.144 | 0.234 | 0.468 | 0.531 | 0.792 | 0.936 | 1.053 | 1.026 | 1.08 | 1.053 |
| Frequency/Hz | 1000 | 1250 | 1600 | 2000 | 2500 | 3150 | 4000 | 5000 | On average | NRC |
| Sound absorption coefficient | 0.909 | 0.819 | 0.846 | 0.936 | 0.882 | 0.963 | 0.909 | 0.963 | 0.819 | 0.90 |
Sound barrier of the present invention is carried out to sound absorbing capabilities detection, and the sound absorption coefficient that detection obtains different frequency is as following table 1, and table 1 is that sound barrier of the present invention detects the sound absorption coefficient obtaining at different frequency:
From table 1, average sound absorption coefficient of the present invention is high, acoustic frequency bandwidth, and effect of low-frequency sound absorption is good, and its noise frequency division regulation effect is remarkable, is particularly suitable as the sound barrier of high-speed railway.
Claims (8)
1. a sound barrier, comprise along rail diatom and continue spaced ribs post (1), ribs post (1) is fixedly mounted in the structure of railway basis (6), it is characterized in that: between described every two ribs posts (1), railways train operation face one side is mounted with acoustical board (2), the back side one side is mounted with backboard (3), between acoustical board (2) and backboard (3), form hollow structure.
2. sound barrier according to claim 1, is characterized in that: described acoustical board (2) is the micropore ceramics composite plate with the three-dimensional netted pore structure of unordered connection, and micropore size is 0.5 to 100 micron.
3. sound barrier according to claim 1 and 2, is characterized in that: described ribs post (1) is cambered surface with the sound barrier that acoustical board (2) and backboard (3) form, and the concave direction of cambered surface is towards railways train operation face, and cambered surface radius is 12 ± 0.5 meters.
4. sound barrier according to claim 3, is characterized in that: described backboard (3) lower edge stretches out ribs post (1) bottom.
5. sound barrier according to claim 4, is characterized in that: described ribs post (1) and acoustical board (2) and backboard (3) respectively by bolt or/and bonding agent be connected and fixed.
6. sound barrier according to claim 4, is characterized in that: described acoustical board (2) and backboard (3) are respectively detachable combining structure.
7. sound barrier according to claim 4, is characterized in that: described backboard (3) adopts RPC material to make.
8. sound barrier according to claim 4, is characterized in that: described ribs post (1) adopts RPC material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310515863.8A CN103526700B (en) | 2013-10-28 | 2013-10-28 | A kind of sound barrier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310515863.8A CN103526700B (en) | 2013-10-28 | 2013-10-28 | A kind of sound barrier |
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| CN103526700A true CN103526700A (en) | 2014-01-22 |
| CN103526700B CN103526700B (en) | 2015-11-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674688A (en) * | 2015-03-25 | 2015-06-03 | 成都中弘轨道交通环保产业股份有限公司 | Integral ultra-high strength concrete-micro-porous ceramic composite sound barrier of high-speed railway box beam |
| CN104727243A (en) * | 2015-03-25 | 2015-06-24 | 成都中弘轨道交通环保产业股份有限公司 | Railway T-shaped beam integration super-high strength concrete-micro-porous ceramic compound sound barrier |
| CN104727241A (en) * | 2015-03-25 | 2015-06-24 | 成都中弘轨道交通环保产业股份有限公司 | Integral type multilayer micro-perforated metallic sound barrier |
| CN105803961A (en) * | 2016-03-22 | 2016-07-27 | 扬州大学 | Active powder concrete noise barrier |
| CN107558408A (en) * | 2015-11-03 | 2018-01-09 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
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| JPH07300822A (en) * | 1994-05-09 | 1995-11-14 | Nippon Ita Glass Kankyo Amenitei Kk | Soundproofing wall for road |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727241B (en) * | 2015-03-25 | 2017-04-12 | 成都中弘轨道交通环保产业股份有限公司 | Integral type multilayer micro-perforated metallic sound barrier |
| CN104727243A (en) * | 2015-03-25 | 2015-06-24 | 成都中弘轨道交通环保产业股份有限公司 | Railway T-shaped beam integration super-high strength concrete-micro-porous ceramic compound sound barrier |
| CN104727241A (en) * | 2015-03-25 | 2015-06-24 | 成都中弘轨道交通环保产业股份有限公司 | Integral type multilayer micro-perforated metallic sound barrier |
| CN104674688A (en) * | 2015-03-25 | 2015-06-03 | 成都中弘轨道交通环保产业股份有限公司 | Integral ultra-high strength concrete-micro-porous ceramic composite sound barrier of high-speed railway box beam |
| CN107553692B (en) * | 2015-11-03 | 2019-07-26 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
| CN107558408A (en) * | 2015-11-03 | 2018-01-09 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
| CN107553693A (en) * | 2015-11-03 | 2018-01-09 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
| CN107553692A (en) * | 2015-11-03 | 2018-01-09 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
| CN107653777A (en) * | 2015-11-03 | 2018-02-02 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
| CN107558408B (en) * | 2015-11-03 | 2019-07-26 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
| CN107553693B (en) * | 2015-11-03 | 2019-07-26 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
| CN107653777B (en) * | 2015-11-03 | 2019-07-26 | 北京鸿锐嘉科技发展有限公司 | The preparation method of crash bearer |
| CN105803961A (en) * | 2016-03-22 | 2016-07-27 | 扬州大学 | Active powder concrete noise barrier |
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