CN106758902A - Railway integrated curved form sound barrier - Google Patents
Railway integrated curved form sound barrier Download PDFInfo
- Publication number
- CN106758902A CN106758902A CN201611243909.5A CN201611243909A CN106758902A CN 106758902 A CN106758902 A CN 106758902A CN 201611243909 A CN201611243909 A CN 201611243909A CN 106758902 A CN106758902 A CN 106758902A
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- China
- Prior art keywords
- sound barrier
- smooth curve
- smooth
- curved form
- train
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0017—Plate-like elements
Abstract
The present invention discloses a kind of railway integrated curved form sound barrier, including sound barrier base and sound barrier；The section of sound barrier is the smooth curve of closing, smooth curve is arranged symmetrically and is peak with the intersection point of symmetry axis, smooth curve be from peak away from symmetry axis simultaneously downwards it is smooth extend a distance into after be further continued for downwards and smooth near a segment distance to symmetry axis, two ends and the sound barrier base of smooth curve are fixed.The present invention can effectively reduce the outside windage of sound barrier, be conducive to reducing the blast that structure is born；Local Contraction ratio when train passes through can be reduced, reduce the Pneumatic pressure of inner high speed train, so that the lateral resistance of train is obviously reduced, be conducive to reducing the vibration that sound barrier sheet material and the train aerodynamic-force suffered by skeleton cause, be conducive to noise reduction, can also strengthen comfort level when train is travelled inside it；Interior noise is reflected back by original route to greatest extent such that it is able to form effective sound wave interference, so as to reduce noise.
Description
Technical field
The present invention relates to the component used in railway, and in particular to a kind of railway sound barrier.
Background technology
Developed countries are studied in acoustic screen and application aspect has done substantial amounts of work, have developed erect type, Y
Various patterns such as type, inverted L shape, apsacline and acoustic hood, but there is no the relevant report of the totally-enclosed sound barrier of high-speed railway.
In recent years, with Chinese society expanding economy and the raising of common people's environmental consciousness, vibration and make an uproar that traffic causes
Sound is gradually paid attention to the ambient influnence in region, and various noise barrier structure is obtained in railway, highway and rail traffic bridge
Substantial amounts of utilization is arrived, its sound insulation, noise reduction feature are as follows：
(1) railway vertical type sound barrier
Such sound barrier environment sensitive spot that railway passes through at home, generally makes in school, factory, residential neighborhood
With, its highly low, simple structure, three-dimensional sound insulation, noise reduction are general.
(2) mining under railways+steel frame, the semi-enclosed sound barrier of sound panel combination
Such sound barrier is used primarily in passenger dedicated railway line aspect, and such as Shanghai-Hangzhou visitor specially employs semi-enclosed sound barrier.
This section of semi-enclosed sound barrier 300m long, beam portion uses single box single chamber concrete simple supported box beam, and wind barrier is gate-type steel frame knot
Structure, half side closing, train pneumatic stress effect is not as good as full-closed structure.But, the combination sound-screen of steel frame+acoustic board and sound insulationg board
There is the problems such as cost high, poor durability, late maintaining maintenance capacity are big, and semi-closed structure defening effect is not notable in barrier structure.And
Test result shows that the noise curve contrast of this section of sound barrier inner side and outer side shows that oise insulation factor does not reach 30dB (A),
And the oise insulation factor of open side is lower, 30dB (A) requirements are not reached far.
(3) flute profile semi-closed structure+steel frame, the wind shielding structure of sound panel combination
This similar structures such as Lan-xing Railway the second double line wind barrier, the program uses light section steel structure frame, covering
Perforate corrugated sheet steel is mainly used to solve the windproof requirement of contact net.Wind shielding structure is located at circuit both sides, column and freely-supported flange of beam
It is bolted.The class formation is the ventilative structure in part, it is impossible to for reducing structureborne noise.
(4) highway, urban track traffic totally enclosed type (containing semi-enclosed) sound barrier
Urban road and Bridges on Urban Rail Transit aspect, number semi-enclosed sound barrier of line of Wuhan Rail Transit, north
Capital city railway traffic engineering, Beijing zoo overpass and Hong Kong track traffic employ totally enclosed type sound barrier etc..This
The height of class formation is much smaller than railway or high-speed railway, and wind area is small, comparable with railway sound barrier in structure height size
Property is small.And the low train pneumatic stress effect of road speed not very significantly, automobile and Repeated-load of High-speed Track Vehicles are lighter than railway, dither effect and
Noise is less than railroad bridge；Maintenance is smaller than railway to traffic impact.
Additionally, above-mentioned several structures can not be played effectively reduces external wind pressure, train aerodynamic-force effect.
The content of the invention
For existing noise barrier structure on railroad bridge using when a series of problems for existing, it is an object of the invention to
Offer one kind can play and effectively reduce external wind pressure, reduces train aerodynamic-force effect, sound barrier sound insulation can be improved again and is inhaled
The railway integrated curved form sound barrier of acoustic performance.
To reach above-mentioned purpose, the railway integrated curved form sound barrier of present invention design, it is characterised in that：Including sound-screen
Barrier base and sound barrier；The section of the sound barrier is the smooth curve of closing, and the smooth curve is arranged symmetrically and and symmetry axis
Intersection point be peak, the smooth curve be by peak away from symmetry axis simultaneously downwards it is smooth extend a distance into after followed by
Continuous downwards and smooth near a segment distance to symmetry axis, two ends and the sound barrier base of the smooth curve are fixed.
Preferably, the smooth curve farthest the distance between 2 points is more than the smooth curve two-end-point to symmetry axis
The distance between.
Preferably, the smooth curve farthest the distance between 2 points is more than bridge deck width to symmetry axis.
Preferably, the smooth curve for ellipse clip partial line section.
Preferably, the smooth curve is the tangent circular arc of multistage.
It is further preferred that the smooth curve is three sections of tangent circular arcs.
Preferably, the sound barrier includes skeleton and sound insulationg board.
The beneficial effects of the invention are as follows：First, the outside wind of sound barrier can be effectively reduced using the contour structures of integrated curved
Resistance, is conducive to reducing the blast that structure is born, it is adaptable to typhoon region, reduces primary structure member quantities.2nd, using integrated curved
Contour structures can be under bridge deck width identical condition part, sound barrier bottom is tried one's best and is extended out, the knot in the altitude range of train
Structure inner width increases, so as to reduce Local Contraction ratio when train passes through, reduces the Pneumatic pressure of inner high speed train so that train
Lateral resistance be obviously reduced, be conducive to reducing the vibration that sound barrier sheet material and the train aerodynamic-force suffered by skeleton cause, have
Beneficial to noise reduction, can also strengthen comfort level when train is travelled inside it；3rd, using the contour structures energy maximum limit of integrated curved
That spends is reflected back interior noise by original route such that it is able to effective sound wave interference is formed, so as to reduce noise.
Brief description of the drawings
Fig. 1 is structural representation of the invention
Fig. 2 is the structural representation of prior art one
Fig. 3 is the structural representation of prior art two
Fig. 4 is the flow field figure and tonogram of prior art one
Fig. 5 is the flow field figure and tonogram of prior art two
Fig. 6 is flow field figure of the invention and tonogram
In figure：Sound barrier base 1, sound barrier 2, symmetry axis 3, girder 4.
Specific embodiment
Below by Fig. 1~Fig. 6 and the mode of some alternative embodiments of the invention is enumerated, to technical side of the invention
Case (including optimal technical scheme) is described in further detail, any technical characteristic and any technical side in the present embodiment
Case is not limited the scope of the invention.
As shown in figure 1, the railway integrated curved form sound barrier of present invention design, including sound barrier base 1 and sound barrier 2,
The sound barrier base 1 is located at the both sides of the direction across bridge of girder 4；The section of the sound barrier 2 is the smooth curve of closing, described smooth
Curve symmetric arranges and is peak with the intersection point of symmetry axis 3, the smooth curve be from peak away from symmetry axis 3 simultaneously to
Under it is smooth extend a distance into after be further continued for downwards and smooth near a segment distance to symmetry axis 3, the two ends of the smooth curve
Fixed with sound barrier base 1.
Preferably, the smooth curve is more than the smooth curve two to the distance between two farthest point A, B of symmetry axis
The distance between end points C, D, even if also line segment AB ＞ line segments CD.The smooth curve is to 2 farthest points of symmetry axis between A, B
Distance be more than bridge deck width, that is to say the structure for foring evagination.
Preferably, the smooth curve for ellipse clip partial line section.
Preferably, the smooth curve is the tangent circular arc of multistage.
It is further preferred that the smooth curve is three sections of tangent circular arcs.
Preferably, the sound barrier includes skeleton and sound insulationg board.Skeleton and sound insulation sheet material can be prefabricated in factory, are transported to work
Ground in-site installation.Using the tangent circular arc scheme of multistage, the species and manufacture difficulty of skeleton and sound insulationg board can be reduced.
One) external pneumatic performance comparison
Using the SST k- ω models in Fluid Mechanics Computation (CFD) software FLUENT, the different wind speed of permanent analysis, difference
Angle of attack lower girder section and three quiet general mood dynamic characteristics with totally enclosed type sound barrier section scheme (Fig. 1 to Fig. 3).
1 is carried out to three kinds of structures of Fig. 1 to Fig. 3:1 model is calculated, selected wind speed 15m/s, -3 ° of the wind angle of attack, 0 °, 3 ° enter promoting the circulation of qi
Power numerical simulation analysis, as a result as shown in table 1 and Fig. 4 to 6.
From flow field figure and tonogram (Fig. 4 to Fig. 6), burble point of the invention substantially rearward, occur two it is symmetrical
Wake vortices, and position is low compared with two kinds of structures of prior art one and prior art two, therefore resistance coefficient is less than prior art
Two schemes, the damped coefficient of sound barrier all angles of the invention is only the 62%~89% of remaining two scheme in table 1, due to
To totally enclosed type sound barrier configuration design, resistance coefficient plays control action, therefore side's external pneumatic power performance of the present invention better than existing
Two schemes in technology.
Each section pneumatic force coefficient under the different wind speed of table one
Two) aerodynamic performance of train contrast：
CFD Three Dimensional Aerodynamic analysis results show, the obstruction of prior art one, two (Fig. 2 and Fig. 3) and (Fig. 1) of the invention
Rate is approached, but train in the sound barrier of the present invention design when running, and the lateral resistance of train, vertical lift side, turns over torque point
Not Wei prior art 67%, 36%, 70%.
It should be readily apparent to one skilled in the art that these are only presently preferred embodiments of the present invention, not limiting this hair
Bright, all any modification, combination, replacement, improvement made under the spirit and principles in the present invention etc. are all contained in guarantor of the invention
Within the scope of shield.
Claims (7)
1. a kind of railway integrated curved form sound barrier, it is characterised in that：Including sound barrier base (1) and sound barrier (2)；The sound
The section of barrier (2) is the smooth curve of closing, and the smooth curve is arranged symmetrically and is highest with the intersection point of symmetry axis (3)
Point, the smooth curve be by peak away from symmetry axis (3) and meanwhile downwards it is smooth extend a distance into after be further continued for downwards simultaneously
Smooth near a segment distance to symmetry axis (3), the two ends of the smooth curve are fixed with sound barrier base (1).
2. railway integrated curved form sound barrier according to claim 1, it is characterised in that：The smooth curve is to symmetrically
Axle (3) farthest the distance between 2 points is more than the distance between described smooth curve two-end-point.
3. railway integrated curved form sound barrier according to claim 1, it is characterised in that：The smooth curve is to symmetrically
Axle farthest the distance between 2 points is more than bridge deck width.
4. the railway integrated curved form sound barrier according to claim 1 or 2 or 3, it is characterised in that：The smooth curve
For ellipse clips partial line section.
5. the railway integrated curved form sound barrier according to claim 1 or 2 or 3, it is characterised in that：The smooth curve
It is the tangent circular arc of multistage.
6. railway integrated curved form sound barrier according to claim 5, it is characterised in that：The smooth curve is three sections
Tangent circular arc.
7. railway integrated curved form sound barrier according to claim 1, it is characterised in that：The sound barrier (2) includes
Skeleton and sound insulationg board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243909.5A CN106758902A (en) | 2016-12-29 | 2016-12-29 | Railway integrated curved form sound barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243909.5A CN106758902A (en) | 2016-12-29 | 2016-12-29 | Railway integrated curved form sound barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106758902A true CN106758902A (en) | 2017-05-31 |
Family
ID=58927583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611243909.5A Pending CN106758902A (en) | 2016-12-29 | 2016-12-29 | Railway integrated curved form sound barrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106758902A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110807222A (en) * | 2019-11-06 | 2020-02-18 | 苏交科集团股份有限公司 | Method for quickly identifying static aerodynamic coefficient of section of main beam |
| CN111651803A (en) * | 2020-03-10 | 2020-09-11 | 西南交通大学 | Pressure reduction system, design method and pressure reduction device for entrance and exit of square totally-closed sound barrier |
| CN113005934A (en) * | 2021-03-10 | 2021-06-22 | 重庆交通职业学院 | Closed urban rail sound barrier |
Citations (9)
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|---|---|---|---|---|
| EP0567040A1 (en) * | 1992-04-22 | 1993-10-27 | Gerhard Dipl.-Ing. Witting | Side covers for road structure |
| WO1999064682A1 (en) * | 1998-06-10 | 1999-12-16 | Peter Lorenz | Noise protection construction built with prefabricated parts |
| KR20060099168A (en) * | 2005-03-10 | 2006-09-19 | 명성산업개발 주식회사 | Apparatus for sound absorption in soundproof tunnel |
| CN103046490A (en) * | 2012-12-28 | 2013-04-17 | 森特士兴集团股份有限公司 | Totally closed sound barrier |
| CN203807961U (en) * | 2014-03-31 | 2014-09-03 | 上海中驰建筑工程有限公司 | Totally-closed sound barrier |
| CN104847396A (en) * | 2015-05-11 | 2015-08-19 | 上海市政工程设计研究总院（集团）有限公司 | Natural ventilation method of tunnel sound barrier |
| CN104894990A (en) * | 2015-06-05 | 2015-09-09 | 山西尚风科技股份有限公司 | All-closed noise barrier |
| CN106522117A (en) * | 2016-12-22 | 2017-03-22 | 中国铁路总公司 | Circular-arc-shaped all-closed sound barrier |
| CN206359909U (en) * | 2016-12-29 | 2017-07-28 | 中铁第四勘察设计院集团有限公司 | Railway integrated curved form sound barrier |
-
2016
- 2016-12-29 CN CN201611243909.5A patent/CN106758902A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0567040A1 (en) * | 1992-04-22 | 1993-10-27 | Gerhard Dipl.-Ing. Witting | Side covers for road structure |
| WO1999064682A1 (en) * | 1998-06-10 | 1999-12-16 | Peter Lorenz | Noise protection construction built with prefabricated parts |
| KR20060099168A (en) * | 2005-03-10 | 2006-09-19 | 명성산업개발 주식회사 | Apparatus for sound absorption in soundproof tunnel |
| CN103046490A (en) * | 2012-12-28 | 2013-04-17 | 森特士兴集团股份有限公司 | Totally closed sound barrier |
| CN203807961U (en) * | 2014-03-31 | 2014-09-03 | 上海中驰建筑工程有限公司 | Totally-closed sound barrier |
| CN104847396A (en) * | 2015-05-11 | 2015-08-19 | 上海市政工程设计研究总院（集团）有限公司 | Natural ventilation method of tunnel sound barrier |
| CN104894990A (en) * | 2015-06-05 | 2015-09-09 | 山西尚风科技股份有限公司 | All-closed noise barrier |
| CN106522117A (en) * | 2016-12-22 | 2017-03-22 | 中国铁路总公司 | Circular-arc-shaped all-closed sound barrier |
| CN206359909U (en) * | 2016-12-29 | 2017-07-28 | 中铁第四勘察设计院集团有限公司 | Railway integrated curved form sound barrier |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110807222A (en) * | 2019-11-06 | 2020-02-18 | 苏交科集团股份有限公司 | Method for quickly identifying static aerodynamic coefficient of section of main beam |
| CN111651803A (en) * | 2020-03-10 | 2020-09-11 | 西南交通大学 | Pressure reduction system, design method and pressure reduction device for entrance and exit of square totally-closed sound barrier |
| CN113005934A (en) * | 2021-03-10 | 2021-06-22 | 重庆交通职业学院 | Closed urban rail sound barrier |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |