CN109295870A - A kind of totally-enclosed noise barrier structure that steel skeleton is combined with modified ECC concrete slab - Google Patents
A kind of totally-enclosed noise barrier structure that steel skeleton is combined with modified ECC concrete slab Download PDFInfo
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- CN109295870A CN109295870A CN201811155749.8A CN201811155749A CN109295870A CN 109295870 A CN109295870 A CN 109295870A CN 201811155749 A CN201811155749 A CN 201811155749A CN 109295870 A CN109295870 A CN 109295870A
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- cover board
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- press strip
- railway
- crossbeam
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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
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses the totally-enclosed noise barrier structures that a kind of steel skeleton is combined with modified ECC concrete slab, it is characterized by comprising be across above railway and along the crossbeam annular in shape of railway longitudinal gap setting, stringer is equipped between two adjacent beams, the cover board to match with beam outer surface radian is equipped between the two adjacent beam outer surface, the cover board is 1~3m along the width of railway transverse direction, with a thickness of 3~8cm, the cover board is pre-formed by high-tenacity fiber enhancing cement-base composite material.The present invention has the characteristics of soundproof effect is good, durability is good, fire resistance is good, aeroperformance is good and good economy performance.
Description
Technical field
The present invention relates to a kind of railway noise barrier, specifically a kind of steel skeleton is combined with modified ECC concrete slab
Totally-enclosed noise barrier structure.
Background technique
Nowadays temporarily without totally-enclosed sound barrier on railway, and the totally-enclosed sound-screen of highway, municipal administration and field of urban rail
Barrier mostly uses the structure type of " rectangle steel structure framework+metallic panel absorber+transparent sound insulationg board ", and such structure type has following lack
It falls into:
First, service life only 15~20 years of metallic panel absorber and transparent sound insulationg board, the design with main structure used
100 years service life were not consistent seriously.
Second, transparent panel involves great expense, and metallic panel absorber cost is also higher, if considering entire 100 years validity period domestic demands
The number safeguarded and replaced, then cost is higher.
Third, existing this totally-enclosed sound barrier because metallic panel absorber performance at any time constantly reduce and plate gap mistake
Mostly excessive reason, noise reduction effect is not satisfactory, and cannot preferably adapt to arcuate profile.
4th, transparent sound insulationg board cost is high, sound insulation property is poor, and its fire resistance is poor, and inflammable, sound barrier is on fire frequent occurrence
The case of burning, causes heavy economic losses.
Summary of the invention
It is good, durable that the purpose of the present invention is to solve the shortcomings of the above background art and to propose a kind of soundproof effects
Property good, fire resistance is good, aeroperformance is good and a kind of steel skeleton of good economy performance is combined with modified ECC concrete slab totally-enclosed sound
Barrier structure.
In order to achieve the goal above, a kind of steel skeleton provided by the invention combined with modified ECC concrete slab it is totally-enclosed
Noise barrier structure, it is characterised in that: including being across above railway and along the crossbeam annular in shape of railway longitudinal gap setting, institute
It states and is equipped with stringer between two adjacent beams, be equipped between the two adjacent beam outer surface and to match with beam outer surface radian
Cover board, the cover board are 1~3m along the width of railway transverse direction, and with a thickness of 3~8cm, the cover board enhances water by high-tenacity fiber
Cement-based composite material is pre-formed.
As a preferred solution of the present invention, press strip otic placode, the adjacent cover board are vertically equipped on the outer surface of the crossbeam
The two sides of press strip otic placode are erected on along the edge of railway longitudinal direction, the adjacent cover board is equipped with press strip above the edge of railway longitudinal direction
Steel plate, the press strip steel plate middle part offer the aperture to match with press strip otic placode, and the top of the press strip otic placode passes through aperture, institute
The top two sides for stating press strip otic placode are respectively equipped with limit plate, and the limit plate is connected by high-strength bolt with press strip otic placode, described
Press strip steel plate, cover board and crossbeam pass through limit plate vertical spacing.
Further, rubber strip is equipped between the cover board and crossbeam, between cover board and press strip steel plate.
Further, the cover board includes transparent roof panels and the side plate set on transparent roof panels two sides, the transparent roof panels
For sound insulationg board, the side plate is pre-formed by high-tenacity fiber enhancing cement-base composite material.
Further, the crossbeam is spliced along its length by multiple I-steel, what the crossbeam was connect with stringer
Position is equipped with splice plate, and the splice plate is welded between the edge of a wing of I-steel and web, and the splice plate and stringer pass through height
Strength bolt is fixedly connected.
Further, X-type supporting beam is equipped in the cell that the crossbeam and stringer are staggered to form.
Further, described to pass through concave-convex notch occlusion between the adjacent cover board of railway transverse direction.
Further, after the concave-convex notch between the adjacent cover board of railway transverse direction is uniformly filled with foam glue strip,
It is sealed using silicone weather resistant glue；Gap foam glue strip of the cover board between the edge and press strip otic placode of railway longitudinal direction is uniform
After filling, sealed using silicone weather resistant glue.
Further, the railway two sides are equipped with footnote built-in fitting, and the both ends of the crossbeam and footnote built-in fitting pass through height
Strength bolt is fixed.
The totally-enclosed noise barrier structure that a kind of this steel skeleton combine with modified ECC concrete slab is using high-tenacity fiber enhancing
Cement-base composite material prepares cover board, and not only better than the sound insulation effect of conventional metals acoustic board or penetrating sound insulationg board, durability is good,
And cost is cheaper, and fire protecting performance greatly promotes, and shape can diversification.High-tenacity fiber enhances cement-base composite material system
Standby cover board is unlikely to deform, and area is big than conventional sound insulationg board, thus reduce splicing seams quantity, meanwhile, cover board passes through recessed
The splicing of tongue mouth, can be bonded arcuate profile, after vertically and horizontally gap is uniformly filled with foam glue strip, using silicone weather resistant completely
Glue sealing, seam leakage voice phenomenon substantially reduce.In addition, the totally-enclosed sound-screen that a kind of steel skeleton is combined with modified ECC concrete slab
Barrier structure integrally uses the integrated curved moulding of evagination, than conventional upright formula sound barrier aeroperformance more preferably.
Detailed description of the invention
Fig. 1 is sectional view of the invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the connection schematic diagram of Fig. 1 middle cross beam and cover board.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the connection schematic diagram of Fig. 1 middle cross beam and stringer.
Fig. 6 is the structural schematic diagram of cover board.
Fig. 7 is standard point sound pressure level comparison diagram at 7.5m.
Fig. 8 is standard point sound pressure level comparison at 25m.
In figure: crossbeam 1, cover board 2, transparent roof panels 2.1, side plate 2.2, stringer 3, railway 4, footnote built-in fitting 5, press strip steel plate
6, rubber strip 7, splice plate 8, X-type supporting beam 9, high-strength bolt 10, press strip otic placode 11a, limit plate 11b, gap 12.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Embodiment: the totally-enclosed noise barrier structure that a kind of steel skeleton as shown in the figure is combined with modified ECC concrete slab, packet
It includes and is across 4 top of railway and along the crossbeam 1 annular in shape of railway longitudinal gap setting.It is pre- that 4 two sides of railway are equipped with footnote
Embedded part 5, the both ends of the crossbeam 1 and footnote built-in fitting 5 are fixed by high-strength bolt 10.It is equipped between two adjacent beams 1
Stringer 3 is equipped with X-type supporting beam 9, crossbeam 1, stringer 3 and X-type support in the cell that the crossbeam 1 is staggered to form with stringer 3
Beam 9 collectively forms stress frame.The cover board 2 to match with 1 outer surface radian of crossbeam is equipped on stress frame.
Wherein, crossbeam 1 is spliced along its length by multiple I-steel, and the position that the crossbeam 1 is connect with stringer 3 is set
There is splice plate 8, the splice plate 8 is welded between the edge of a wing of I-steel and web, and the splice plate 8 passes through high-strength with stringer 3
Bolt 10 is fixedly connected.
The cover board 2 to match with 1 outer surface radian of crossbeam, 2 edge of cover board are equipped between two adjacent beams, 1 outer surface
The width of railway transverse direction is 1~3m, with a thickness of 3~8cm.Cover board 2 is including transparent roof panels 2.1 and is set to 2.1 two sides of transparent roof panels
Side plate 2.2, the transparent roof panels 2.1 are sound insulationg board, and the side plate 2.2 enhances cement-base composite material by high-tenacity fiber
(ECC) pre-formed.
Press strip otic placode 11a, edge of the adjacent cover board 2 along railway longitudinal direction are vertically equipped on the outer surface of the crossbeam 1
The two sides of press strip otic placode 11a are erected on, the adjacent cover board 2 is equipped with press strip steel plate 6, the pressure above the edge of railway longitudinal direction
The aperture to match with press strip otic placode 11a is offered in the middle part of steel plate 6, the top of the press strip otic placode 11a passes through aperture, the pressure
The top two sides of otic placode 11a are respectively equipped with limit plate 11b, and the limit plate 11b passes through high-strength bolt 10 and press strip otic placode 11a
It is connected, the press strip steel plate 6, cover board 2 and crossbeam 1 pass through limit plate 11b vertical spacing.Between the cover board 2 and crossbeam 1, cover
Rubber strip 7 is equipped between plate 2 and press strip steel plate 6.Limit plate 11b and rubber strip 7 match to form the soft of cover board 2 and crossbeam 1
Property connection.
It is described between the adjacent cover board 2 of railway transverse direction by concave-convex notch occlusion, along railway transverse direction adjacent cover board 2 it
Between concave-convex notch uniformly filled with foam glue strip after, sealed using silicone weather resistant glue；Edge of the cover board 2 along railway longitudinal direction
After gap 12 between press strip otic placode 11a is uniformly filled with foam glue strip, sealed using silicone weather resistant glue.Wherein foam glue strip
Play the role of sound insulaton with silicone weather resistant glue.Simultaneously when Changes in weather causes to expand with heat and contract with cold, guarantee sealing effect not by shadow
It rings.
This kind of sequence of construction for the totally-enclosed noise barrier structure that steel skeleton is combined with modified ECC concrete slab are as follows: stringent
Suspension column built-in fitting 5 is positioned, pouring suspension column built-in fitting 5, --- lifting cross beam 1 --- tightens high-strength bolt 10 after positioning adjustment ---
Installation stringer 3 --- installation X-type supporting beam 9 --- the bottom-up cover board 2 that successively lifts --- installation is fixed temporarily bolt ---
2 gap sealing of cover board --- bottom-up 6 limit plate of installation press strip steel plate and 11b --- is changed to permanent high-strength bolt 10
Fixed 6 limit plate of press strip steel plate and 11b.
It compares with existing steel frame noise barrier structure, according to the prediction oise insulation factor of two kinds of totally-enclosed sound barrier schemes, leads to
The method for defining acoustic transfer function is crossed, is loaded into sound barrier external sound field computation model.With the model to external having verified that
Site is predicted that table 1 is the comparison of different site totality sound pressure levels.
| Position | (7.5m,3.5m) | (25m,3.5m) | Acoustic attenuation amount | 25m correction value |
| Steel frame sound barrier (dB (A)) | 76.0 | 68.7 | 7.3 | 73.1 |
| Concrete acoustical barrier (dB (A)) | 72.5 | 65.2 | 7.3 | 69.6 |
| Difference | 3.5 | 3.5 | 0 | 3.5 |
The comparison of 1 sound pressure level of table
From prediction result as can be seen that for 7.5m and 25m site, concrete (i.e. high-tenacity fiber that the present invention uses
Enhancing cement-base composite material) noise reduction effect of sound barrier scheme is better than steel frame sound barrier scheme 3.5dB (A).From 7.5m
Site is to 25m site, and noise attentuation 7.3dB (A), this attenuation and line source theoretical attenuation amount 6.9dB (A) are close.According to reality
Survey with prediction decaying difference, the sound pressure level of 25m site is modified, be shown in Table in last column.
The spectral characteristic to two kinds of sound barriers in 7.5m and 25m site sound pressure level compares respectively, such as Fig. 7, Fig. 8 institute
Show, it can be found that: same sound barrier is consistent in the frequency spectrum of different distance site, and the spectral characteristic difference without same sound barrier is bright
It is aobvious；The spectrum peak of concrete acoustical barrier scheme appears in centre frequency 500Hz and 2500Hz, this peak value is just concrete
The identical paddy of the low ebb value of oise insulation factor, respectively concrete acoustical barrier oise insulation factor and sound reveal low ebb.Steel frame sound barrier frequency peak
Value appears in centre frequency 1000Hz, this frequency is sound source excitation peak.
Therefore, the sound insulation effect for the concrete acoustical barrier structure that the present invention uses will be significantly better than metallic panel absorber structure
Sound insulation effect.
In conclusion compared with prior art, present invention has an advantage that
1, using the cover board 2 of high-tenacity fiber enhancing cement-base composite material (ECC) preparation than conventional metals acoustic board or
The sound insulation effect of penetrating sound insulationg board is good, and durability is good, and cost is cheaper, and fire protecting performance greatly promotes, and shape can multiplicity
Change.
2, it is unlikely to deform using the cover board 2 of high-tenacity fiber enhancing cement-base composite material (ECC) preparation, area is comparable
Conventional sound insulationg board is big, thus reduce splicing seams quantity, meanwhile, cover board 2 passes through concave-convex notch occlusion, can be bonded arc completely
Shape is sealed after vertically and horizontally gap is uniformly filled with foam glue strip using silicone weather resistant glue, and seam leakage voice phenomenon drops significantly
It is low.
3, the totally-enclosed noise barrier structure that a kind of this steel skeleton is combined with modified ECC concrete slab integrally uses evagination
Integrated curved moulding, than conventional upright formula sound barrier aeroperformance more preferably.
The above described is only a preferred embodiment of the present invention, not being done in any form to structure of the invention
Limitation.Any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention,
In the range of still falling within technical solution of the present invention.
Claims (9)
1. the totally-enclosed noise barrier structure that a kind of steel skeleton is combined with modified ECC concrete slab, it is characterised in that: including being across
It is equipped with above railway (4) and between the crossbeam (1) annular in shape of railway longitudinal gap setting, two adjacent beams (1) vertical
Beam (3) is equipped with the cover board (2) to match with crossbeam (1) outer surface radian between two adjacent beams (1) outer surface, described
Cover board (2) is 1~3m along the width of railway transverse direction, and with a thickness of 3~8cm, the cover board (2) enhances cement base by high-tenacity fiber
Composite precast molding.
2. the totally-enclosed noise barrier structure that a kind of steel skeleton according to claim 1 is combined with modified ECC concrete slab,
It is characterized in that: being vertically equipped with press strip otic placode (11a) on the outer surface of the crossbeam (1), the adjacent cover board (2) is along railway longitudinal direction
Edge be erected on the two sides of press strip otic placode (11a), the adjacent cover board (2) is equipped with press strip steel above the edge of railway longitudinal direction
Plate (6), press strip steel plate (6) middle part offer the aperture to match with press strip otic placode (11a), the press strip otic placode (11a)
Top passes through aperture, and the top two sides of the press strip otic placode (11a) are respectively equipped with limit plate (11b), and the limit plate (11b) is logical
It crosses high-strength bolt (10) to be connected with press strip otic placode (11a), the press strip steel plate (6), cover board (2) and crossbeam (1) pass through limit plate
(11b) vertical spacing.
3. the totally-enclosed noise barrier structure that a kind of steel skeleton according to claim 2 is combined with modified ECC concrete slab,
It is characterized in that: being equipped with rubber strip (7) between the cover board (2) and crossbeam (1), between cover board (2) and press strip steel plate (6).
4. the totally-enclosed noise barrier structure that a kind of steel skeleton according to claim 1 is combined with modified ECC concrete slab,
Be characterized in that: the cover board (2) include transparent roof panels (2.1) and be set to transparent roof panels (2.1) two sides side plate (2.2), it is described
Transparent roof panels (2.1) are sound insulationg board, and the side plate (2.2) is pre-formed by high-tenacity fiber enhancing cement-base composite material.
5. the totally-enclosed noise barrier structure that a kind of steel skeleton according to claim 1 is combined with modified ECC concrete slab,
Be characterized in that: the crossbeam (1) is spliced along its length by multiple I-steel, what the crossbeam (1) connect with stringer (3)
Position is equipped with splice plate (8), and the splice plate (8) is welded between the edge of a wing of I-steel and web, the splice plate (8) and vertical
Beam (3) is fixedly connected by high-strength bolt (10).
6. the totally-enclosed noise barrier structure that a kind of steel skeleton according to claim 1 is combined with modified ECC concrete slab,
It is characterized in that: being equipped with X-type supporting beam (9) in the cell that the crossbeam (1) and stringer (3) is staggered to form.
7. the totally-enclosed noise barrier structure that a kind of steel skeleton according to claim 1 is combined with modified ECC concrete slab,
It is characterized in that: described to be engaged between the adjacent cover board (2) of railway transverse direction by concave-convex notch.
8. the totally-enclosed noise barrier structure that a kind of steel skeleton according to claim 7 is combined with modified ECC concrete slab,
It is characterized in that: after the concave-convex notch foam glue strip between the adjacent cover board (2) of railway transverse direction is uniformly filled, using silicon
The sealing of ketone weather-resistant glue；Use foamed glue in gap (12) of the cover board (2) between the edge and press strip otic placode (11a) of railway longitudinal direction
After item is uniformly filled, sealed using silicone weather resistant glue.
9. the totally-enclosed noise barrier structure that a kind of steel skeleton according to claim 1 is combined with modified ECC concrete slab,
Be characterized in that: railway (4) two sides are equipped with footnote built-in fitting (5), and the both ends and footnote built-in fitting (5) of the crossbeam (1) are logical
It is fixed to cross high-strength bolt (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155749.8A CN109295870A (en) | 2018-09-30 | 2018-09-30 | A kind of totally-enclosed noise barrier structure that steel skeleton is combined with modified ECC concrete slab |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155749.8A CN109295870A (en) | 2018-09-30 | 2018-09-30 | A kind of totally-enclosed noise barrier structure that steel skeleton is combined with modified ECC concrete slab |
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| CN201811155749.8A Pending CN109295870A (en) | 2018-09-30 | 2018-09-30 | A kind of totally-enclosed noise barrier structure that steel skeleton is combined with modified ECC concrete slab |
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Cited By (4)
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| CN109868714A (en) * | 2019-03-20 | 2019-06-11 | 济南轨道交通集团有限公司 | A kind of O-shaped beam of urban track traffic precast assembly and the elevated bridge including the beam |
| CN110295537A (en) * | 2019-07-02 | 2019-10-01 | 中冶南方工程技术有限公司 | A kind of bridge adds the base unit of sound barrier |
| CN113536554A (en) * | 2021-07-01 | 2021-10-22 | 哈尔滨工程大学 | Method for predicting sound field in closed space by adopting compressed equivalent source method |
| CN113832881A (en) * | 2020-06-23 | 2021-12-24 | 西藏中驰集团股份有限公司 | Screen body and steel structure integrated mounting structure suitable for totally-enclosed sound barrier roof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109868714A (en) * | 2019-03-20 | 2019-06-11 | 济南轨道交通集团有限公司 | A kind of O-shaped beam of urban track traffic precast assembly and the elevated bridge including the beam |
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| CN113832881A (en) * | 2020-06-23 | 2021-12-24 | 西藏中驰集团股份有限公司 | Screen body and steel structure integrated mounting structure suitable for totally-enclosed sound barrier roof |
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