CN209457944U - A kind of multiple noise reduction composite structure in railway tunnel outlet - Google Patents
A kind of multiple noise reduction composite structure in railway tunnel outlet Download PDFInfo
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- CN209457944U CN209457944U CN201822163120.XU CN201822163120U CN209457944U CN 209457944 U CN209457944 U CN 209457944U CN 201822163120 U CN201822163120 U CN 201822163120U CN 209457944 U CN209457944 U CN 209457944U
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- noise reduction
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Abstract
The utility model discloses a kind of multiple noise reduction composite structure in railway tunnel outlet, including each stringcourse shape denoising structure is sequentially arranged in multilayer arch denoising structure, the tunnel portal lining cutting close proximity of first layer arch denoising structure and tunnel outlet section outward later；The cross dimensions of the arch-shaped steel frame Internal periphery of single-layer arch denoising structure is greater than the cross dimensions of tunnel exit Internal periphery；The cross dimensions of the arch-shaped steel frame Internal periphery of the single-layer arch denoising structure of multilayer arch denoising structure is gradually increased from inside to outside, so as to have gap between each stringcourse shape denoising structure；The fixation of arch guard ring is located on arch-shaped steel frame, and the bottom of arch guard ring is embedded to ground；Multiple sound wave reflecting curtains tilt down outwardly to be fixed on the inside of arch-shaped steel frame, and in single-layer arch denoising structure, multiple sound wave reflecting curtains that the adjacent arch-shaped steel frame in front and back is equipped with correspond to staggered positions setting.The multiple noise reduction composite structure economical can efficiently solve the problems, such as that railway tunnel exports noise again.
Description
Technical field
The utility model relates to field of civil engineering, in particular, being a kind of for railway tunnel outlet section reduction noise
The Multiple Combination structure of pollution.
Background technique
When train is to pour tunnel entrance at a high speed, since piston effect will form air compressional wave in tunnel；Work as column
When vehicle is to go out at a high speed tunnel exit, air compressional wave will radially outward, to generate very big noise.Noise can be occupied to neighbouring
The people and ecological environment etc. generate adverse effect, currently, generally laying sound absorption by totally-enclosed sound barrier or in tunnel internal
Material reduces influence of the noise to surrounding resident, however the method higher cost, is not suitable for being widely applied.
On the other hand, as high-speed rail gradually begins to enter city, and or outer suburbs subway subjective reflection start to assemble, train
Noise when access tunnel mouth disturbs residents problem, gradually starts to highlight.
Utility model content
In order to solve the problems existing in the prior art, the utility model provides a kind of multiple noise reduction combination knot in railway tunnel outlet
Structure economical can efficiently solve the problems, such as that railway tunnel exports noise again.
To reach above-mentioned purpose, the utility model adopts the following technical solution:
Railway tunnel exports multiple noise reduction composite structure, including multilayer arch denoising structure, first layer arch denoising structure
With the tunnel portal lining cutting close proximity of tunnel outlet section, each stringcourse shape denoising structure is sequentially set outward later；Single-layer arch
Denoising structure includes steelframe, guard ring harmony wave reflection baffle；The steelframe is arch-shaped steel frame, the section of arch-shaped steel frame Internal periphery
Size is greater than the cross dimensions of tunnel exit Internal periphery；The arch-shaped steel frame of the single-layer arch denoising structure of multilayer arch denoising structure
The cross dimensions of Internal periphery is gradually increased from inside to outside, so as to have gap between each stringcourse shape denoising structure；The guard ring
For arch guard ring, fixation is located on arch-shaped steel frame, and the bottom of arch guard ring is embedded to ground；The sound wave reflecting curtain,
Equipped with multiple, each sound wave reflecting curtain tilts down outwardly to be fixed on the inside of arch-shaped steel frame.
Railway tunnel as described above exports multiple noise reduction composite structure, and the arch-shaped steel frame in single-layer arch denoising structure can
Equipped with multiple, multiple arch-shaped steel frame outer side covering arch guard rings.
Compared to the prior art, technical solution provided by the utility model has following beneficial to effect
Fruit:
First is that the utility model passes through the multiple arch-shaped steel frames continuously to connect, repeatedly expand the sectional area of tunnel outlet section,
And optimization noise reflection structure, the energy that sound wave is diffused into ambient enviroment is reduced, high body tunnel exit noise is reduced.
Second is that multiple arch-shaped steel frames become larger from tunnel portal lining cutting to outside dimension, form that structure is similar but size more
Big denoising structure, is arranged successively except tunnel portal, has gap between each stringcourse shape denoising structure, has no and directly connect
It connects, forms multiple noise reduction composite structure, efficiently economically solve the problems, such as that railway tunnel exports noise again.
Third is that arch-shaped steel frame on the inside of be arranged sound wave reflecting curtain, acoustic wave segment can be reflected, and may with it is subsequent
Sound wave is cancelled out each other, to reduce sound wave ability, further decreases noise.
In conclusion the utility model reduces the Multiple Combination structure of noise pollution for railway tunnel outlet section, pass through
Part changes Acoustic Wave Propagation direction, can significantly mitigate the interference that noise lives to surrounding resident.The utility model is particularly suitable for
High-speed rail or subway tunnel outlet section nearby have the case where resident.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings:
Fig. 1 is the schematic perspective view of the utility model single-layer arch denoising structure；
Fig. 2 is the vertical section schematic diagram one that the utility model railway tunnel exports multiple noise reduction composite structure；
Fig. 3 is the vertical section schematic diagram two that the utility model railway tunnel exports multiple noise reduction composite structure.
Specific embodiment
In order to be clearer and more clear technical problem to be solved in the utility model, technical solution and beneficial effect, with
Under in conjunction with the accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
Example is applied only to explain the utility model, is not used to limit the utility model.
In claims of the utility model, specification and above-mentioned attached drawing, unless otherwise specifically limited, term is such as used
" first ", " second " or " third " etc. is provided to distinguish different objects, be not use to describe a particular order.
In claims of the utility model, specification and above-mentioned attached drawing, unless otherwise specifically limited, for orientation
Word, such as using term " center ", " transverse direction ", " longitudinal direction ", "horizontal", " vertical ", "top", "bottom", "inner", "outside", "upper",
The indicating positions such as "lower", "front", "rear", "left", "right", " clockwise ", " counterclockwise " or positional relationship are based on shown in attached drawing
Orientation and positional relationship, and be merely for convenience of narration the utility model and simplify description, rather than indication or suggestion is signified
Device or element must have a particular orientation or be constructed and operated in a specific orientation, so can not be interpreted as limitation this
The specific protection scope of utility model.
In claims of the utility model, specification and above-mentioned attached drawing, unless otherwise specifically limited, term is such as used
" affixed " or " being fixedly connected ", should broadly understood, i.e., between the two without any company of displacement relation and relative rotation relationship
Connect mode, that is to say, that including being unremovably fixedly connected with, being removably secured connection, be linked together and by other dresses
It sets or element is fixedly connected.
In claims of the utility model, specification and above-mentioned attached drawing, such as using term " includes ", " having " and
Their deformation, it is intended that " including but not limited to ".
Illustrate that the utility model railway tunnel exports multiple noise reduction composite structure, including multilayer arch now in conjunction with Fig. 1 and Fig. 2
The tunnel portal lining cutting close proximity of denoising structure, first layer arch denoising structure and tunnel outlet section, later sequentially to peripheral hardware
Set each stringcourse shape denoising structure.
As shown in Figure 1, single-layer arch denoising structure includes steelframe, guard ring harmony wave reflection baffle 30.Gone out according to tunnel
Mouthful section configuration, the steelframe in single-layer arch denoising structure is arch-shaped steel frame 10, and guard ring is arch guard ring 20, and described
The cross dimensions of 10 Internal periphery of arch-shaped steel frame is greater than the cross dimensions of tunnel exit Internal periphery.The fixed cover of the arch guard ring 20
It is located on arch-shaped steel frame 10, the bottom of arch guard ring 20 is embedded to ground, so that the arch guard ring 20 is covered on arch comprehensively
Outside steelframe 10.Optimal, arch-shaped steel frame 10 in single-layer arch denoising structure can be equipped with multiple, cover on the outside of multiple arch-shaped steel frames 10
Lid arch guard ring 20, to constitute firm arch denoising structure.
Each arch-shaped steel frame 10 in single-layer arch denoising structure is equipped with multiple sound wave reflecting curtains 30, sound wave reflection
Baffle 30 tilts down outwardly is fixed on 10 inside of arch-shaped steel frame, acoustic wave segment is reflected, and may be with subsequent sound wave
It cancels out each other, to reduce sound wave ability, reduces noise.Particular number that the sound wave reflecting curtain 30 is arranged, size and outer
Inclination angle determines preferred plan after can calculating according to aerodynamic principle.
Optimal, the arch-shaped steel frame 10 in single-layer arch denoising structure is equipped with multiple.In single-layer arch denoising structure, front and back
The corresponding staggered positions setting of multiple sound wave reflecting curtains 30 that adjacent arch-shaped steel frame 10 is equipped with.
As shown in Figure 2,3, the arch-shaped steel frame 10 of the single-layer arch denoising structure of the utility model multilayer arch denoising structure
The cross dimensions of Internal periphery is gradually increased from inside to outside, so as to have gap between each stringcourse shape denoising structure.That is the first stringcourse
The cross dimensions of the first arch-shaped steel frame 10A Internal periphery in shape denoising structure is less than the second arch in second layer arch denoising structure
The cross dimensions of shaped steel frame 10B Internal periphery；The section ruler of the second arch-shaped steel frame 10B Internal periphery in second layer arch denoising structure
The very little cross dimensions less than the third arch-shaped steel frame 10C Internal periphery in third layer arch denoising structure, and so on.And it covers
The cross dimensions of the first arch guard ring 20A outer profile outside the first arch-shaped steel frame 10A should be less than second layer arch noise reduction knot
The cross dimensions of the second arch-shaped steel frame 10B Internal periphery in structure；The second arch guard ring being covered on outside the second arch-shaped steel frame 10B
The cross dimensions of 20B outer profile should be less than the section ruler of the third arch-shaped steel frame 10C Internal periphery in third layer arch denoising structure
It is very little, and so on.Multilayer arch denoising structure is successively sequentially arranged in except the tunnel portal lining cutting of tunnel outlet section, is formed more
Weight noise reduction composite structure, expands the sectional area of tunnel outlet section with continuous several times, optimizes noise reflection structure, reduces sound wave expansion
It is scattered to the energy of ambient enviroment, reduces high body tunnel exit noise.
Now by taking single-track railway tunnel as an example, certain circular arch stalk formula tunnel section high 4m, wide 4m, 180 ° of crown central angle.
In embodiment one, there are two the first arch-shaped steel frame 10A of first layer arch denoising structure is set, including preceding first arch
Steelframe 10A1 and rear first arch-shaped steel frame 10A2.First arch-shaped steel frame 10A high 4.5m, wide 4.5m, using section 100mm ×
The hollow square steel of 100mm × 5mm；First layer arch guard ring 20A long 3m, using the tempered glass of thickness 15mm.First arch
Steelframe 10A is screwed on the first arch-shaped steel frame 10A by multiple bolts, forms multi-point support structure.
Sound wave reflecting curtain 30 uses 200mm × 100mm × 3mm sheet metal, is spaced on each first arch-shaped steel frame 10A
It is welded with ten sound wave reflecting curtains 30.In the present embodiment, ten sound waves reflection that preceding first arch-shaped steel frame 10A1 is equipped with
Ten sound wave reflecting curtains 30 correspondence that baffle 30 and rear first arch-shaped steel frame 10A2 are equipped with is arranged in a staggered manner.Each sound wave reflection gear
Plate 30 tilts down 45 ° outwardly and is welded on the first arch-shaped steel frame 10A, thus completes the system of the first layer arch denoising structure
Make.
In embodiment two as shown in Figure 3, there are three the first arch-shaped steel frame 10A of first layer arch denoising structure is set, packet
Include the preceding first arch-shaped steel frame 10A1 being set in sequence, the first arch-shaped steel frame 10A3 of centre and rear first arch-shaped steel frame 10A2.At this
In embodiment, the ten sound wave reflecting curtains 30 and the first arch-shaped steel frame 10A3 of centre that preceding first arch-shaped steel frame 10A1 is equipped with are set
Ten sound wave reflecting curtains 30 correspondence having is arranged in a staggered manner, similarly, ten sound waves that the first arch-shaped steel frame 10A3 of centre is equipped with
Ten sound wave reflecting curtains 30 correspondence that reflecting curtain 30 and rear first arch-shaped steel frame 10A2 are equipped with is arranged in a staggered manner.
Similarly, the second layer arch denoising structure and second layer arch similar with above-mentioned first layer arch denoising structure are made
Denoising structure etc., and so on.Second layer arch-shaped steel frame 10B high 5m, wide 5m, using section of second layer arch denoising structure
100mm × 100mm × 5mm hollow square steel, second layer arch guard ring 20B long 3m, using the tempered glass of thickness 15mm；The
Third layer arch-shaped steel frame 10C high 5.5m, the wide 5.5m of three stringcourse shape denoising structures, using section 100mm × 100mm × 5mm
Hollow square steel, third layer arch guard ring 20C long 3m, using the tempered glass of thickness 15mm.And so on, multilayer arch noise reduction
Structure is arranged successively except tunnel portal, forms multiple noise reduction composite structure.
The preferred embodiment of the utility model has shown and described in above description, as previously described, it should be understood that this is practical new
Type is not limited to forms disclosed herein, and should not be regarded as an exclusion of other examples, and can be used for various other groups
Conjunction, modification and environment, and above-mentioned introduction or the technology of related fields can be passed through within the scope of the inventive concept described herein
Or knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, then
It all should be in the protection scope of the appended claims for the utility model.
Claims (3)
1. a kind of railway tunnel exports multiple noise reduction composite structure, which is characterized in that including multilayer arch denoising structure, first layer
Each stringcourse shape noise reduction knot is sequentially arranged in the tunnel portal lining cutting close proximity of arch denoising structure and tunnel outlet section outward later
Structure；Single-layer arch denoising structure includes steelframe, guard ring harmony wave reflection baffle (30)；Wherein,
Steelframe is arch-shaped steel frame (10) that the cross dimensions of arch-shaped steel frame (10) Internal periphery is greater than the section of tunnel exit Internal periphery
Size；The cross dimensions of arch-shaped steel frame (10) Internal periphery of the single-layer arch denoising structure of multilayer arch denoising structure is from inside to outside
It is gradually increased, so as to have gap between each stringcourse shape denoising structure；
Guard ring is arch guard ring (20), and fixation is located on arch-shaped steel frame (10), the bottom embedment of arch guard ring (20)
Ground；
Sound wave reflecting curtain (30), be equipped with it is multiple, each sound wave reflecting curtain (30) tilts down outwardly is fixed on arch-shaped steel frame
(10) inside.
2. railway tunnel as described in claim 1 exports multiple noise reduction composite structure, which is characterized in that single-layer arch noise reduction knot
Arch-shaped steel frame (10) in structure can be equipped with multiple, multiple arch-shaped steel frame (10) outer side covering arch guard rings (20).
3. railway tunnel as claimed in claim 2 exports multiple noise reduction composite structure, which is characterized in that single-layer arch noise reduction knot
In structure, the corresponding staggered positions setting of multiple sound wave reflecting curtains (30) that the adjacent arch-shaped steel frame in front and back (10) is equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201822163120.XU CN209457944U (en) | 2018-12-21 | 2018-12-21 | A kind of multiple noise reduction composite structure in railway tunnel outlet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822163120.XU CN209457944U (en) | 2018-12-21 | 2018-12-21 | A kind of multiple noise reduction composite structure in railway tunnel outlet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488328A (en) * | 2018-12-21 | 2019-03-19 | 中铁二十二局集团第三工程有限公司 | A kind of multiple noise reduction composite structure in railway tunnel outlet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488328A (en) * | 2018-12-21 | 2019-03-19 | 中铁二十二局集团第三工程有限公司 | A kind of multiple noise reduction composite structure in railway tunnel outlet |
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