CN102051843A - High-speed railway noise barrier - Google Patents
High-speed railway noise barrier Download PDFInfo
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- CN102051843A CN102051843A CN2010106170173A CN201010617017A CN102051843A CN 102051843 A CN102051843 A CN 102051843A CN 2010106170173 A CN2010106170173 A CN 2010106170173A CN 201010617017 A CN201010617017 A CN 201010617017A CN 102051843 A CN102051843 A CN 102051843A
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Abstract
The invention relates to a component used in a railway, in particular to a high-speed railway noise barrier which comprises an H-shaped steel metal upright column, a precast concrete sound absorbing plate which is inserted into the H-shaped steel metal upright column, a transparent sound insulation plate installed above the precast concrete sound absorbing plate and an arc sound absorbing top part arranged at the top part of the transparent sound insulation plate. The high-speed railway noise barrier with the arc sound absorbing top part structure can efficiently absorb the noises of a high-speed railway train wheel rail, aerodynamic force of a train body and the like and prevent the noises from spreading to both sides of a line; and an insertion plate of a precast prestressed concrete unit at the lower part has no tensile stress under the load, thereby efficiently preventing the insertion plate from cracking and achieving the advantages of good anti-fatigue performance and durability, and the sound absorbing insertion plate of the prestressed concrete noise barrier has a low manufacturing cost and is convenient for installation and replacement. The high-speed railway noise barrier is suitable for places which have high requirements for noise isolation, such as urban regions, schools, hospitals, residential areas and the like.
Description
Technical field
The present invention relates to the member that uses in a kind of railway, particularly, relate to a kind of sound barrier structure for high speed railways.
Background technology
At present, China Railway High-speed development is swift and violent, along with in September, 2010 the Shanghai-Hangzhou high ferro open operation, the high-speed railway operation mileage that China has put into effect reaches 7055 kilometers, ranks first in the world.And will reach 1.3 ten thousand km in high-speed railway operation mileages in 2012, surpass other various countries' summations.In the fast development of high-speed railway mileage, the overall trip speed of train was walked the prostatitis in the world equally, and domestic CR H3 type " Harmony " motor train unit train had once been created world's railway operation F-Zero record of 394.3 kilometers on the Beijing-Tianjin inter-city high ferro on June 24th, 2008.On September 28th, 2010, China homemade " Harmony " CRH380A a new generation EMU is in Shanghai-Hangzhou high ferro trial run way, and F-Zero reaches 416.6 kilometers, refreshes world's railway operation test once more the most at a high speed.Therefore China is expected to break through the highest overall trip speed of present 350km/h, and rate is introduced into 380km/h even reaches the high speed of 400km/h.
Sound barrier is one of control railroad train running noises major measure that surrounding environment is polluted, at home and abroad extensively adopts.Frankfurt, Germany-Cologne circuit is when train operation speed 250km/h～330km/h, the fluctuating wind pressure that bullet train produces causes the aluminium alloys unit plate fracture of the sound barrier of its setting, steel post and the connecting bolt on basis are loosening etc., and the result makes this circuit sound barrier have to remove rebuild completely.Along with the raising of bullet train speed, the fluctuating wind pressure that imposes on sound barrier during the train high-speed cruising is also increasing, and the pulsating wind pressure peak value is directly proportional with velocity squared substantially, and ripple frequency is directly proportional with speed substantially.Secondly needleless designs long-term dynamics and tired stressed problem with the still unresolved good high-speed railway train fluctuating wind pressure of using of sound barrier at present to the sound barrier of the above speed per hour of 350km/h with using still in present design.Therefore, design suitable high speed to 400km/h, the good and function admirable of defening effect, the noise barrier structure of good endurance has become the difficult problem in the current international high speed railway construction.
In the acoustic current barrier technique, high speed railway sound barrier form commonly used is single, mainly contains upright metal upright post and inserts metal sheet sound barrier, monolithic concrete sound barrier.Metal unit plates such as metal upright post is inserted the metal sheet sound barrier and adopted H shaped steel column, the complexed metal aluminium alloys and transparent sound barrier use.The latter comprises ordinary concrete integral type sound barrier and pre-stress integral formula sound barrier.From great, crack resistance is poor for ordinary concrete and prestressed concrete sound barrier, and fatigue durability is poor, is connected weakly with roadbed or bridge, and not easy-maintaining and replacing after the disease takes place in construction inconvenience.Present metal upright post board plug type sound barrier, metal backing structure commonly used are difficult to adapt to the dynamically effect repeatedly of 250km/h and above speed bullet train fluctuating wind pressure, and fatigue failure takes place easily.Now Yan Fa glass fiber Reinforced Plastics unit plate (GRP) sound barrier with ribbing has good mechanical performance and elastic deformability, from heavy and light, and excellent noise reduction effect, but its shortcoming is the expense too expensive, inconvenience is promoted the use of.Be limited to the highest operation of present high-speed railway and do not break through 350km/h as yet, therefore less at the noise barrier structure research that is fit under 380～400km/h high-speed railway strong noise, the high train pulsation fatigue loading, more there is not utility structure.
Summary of the invention
For overcoming technical deficiencies such as existing high speed railway sound barrier poor durability, design form are single, the invention provides that a kind of safety of structure height, endurance, durability are good, easy construction, be convenient to change, high speed railway sound barrier that cost is low.
To be the train aerodynamic-force force request require the result that combines with sound insulation and noise reducing in the design of sound barrier structure for high speed railways.Structure at first must satisfy and reduces deadweight under the condition of train wind loads and natural wind load as far as possible, and is convenient to construction and installation etc.Meanwhile, for reducing train body top section aerodynamic noise as far as possible arc sound absorption top is set.
The present invention adopts following technical scheme:
A kind of high speed railway sound barrier comprises H shaped steel metal upright post, inserts the precast concrete acoustical board of H shaped steel metal upright post, and precast concrete acoustical board top is equipped with transparent sound barrier, and arc sound absorption top is set at the top of transparent sound barrier.
Preferably, the precast concrete acoustical board is linked and packed by bolt by precast concrete plate and sound absorption panel and forms; The bottom of precast concrete plate is provided with groove, is combined with the convex rubber pad in the groove; The side end that inserts H shaped steel at the precast concrete plate adopts the flute profile rubber pad to fix the concrete plate to isolate the high-speed railway noise; Be provided with lifting pre-embedded bolt hole at the top of precast concrete plate.
Preferably, precast concrete plate thickness is 8cm, and configuration two dimension prestressing reinforcing bar; The sound absorption panel is selected cement based porous material goods for use.
Preferably, fix channel-section steel by pre-embedded bolt, and fix the bottom of transparent sound barrier by pushing tow bolt and channel-section steel at the top of precast concrete plate; Transparent sound barrier both sides have adopted fastening bolt and fixedly rubber strip and H shaped steel metal column are fastening.
Preferably, arc sound absorption top comprises that the abnormity that is arranged on transparent sound barrier both sides connects channel-section steel, inserts the microwell plate arc sound absorber that abnormity connects channel-section steel, the abnormity of both sides connects channel-section steel and is welded to connect with a channel-section steel that Open Side Down, the top of transparent sound barrier snaps in abnormity and connects in the channel-section steel, and fixes by fastening bolt, rubber pad, steel bar; It is the curved channel-section steel of facade that abnormity connects channel-section steel.
Preferably, microwell plate arc sound absorber has a cavity, filling sucting sound material in the cavity; Connect channel-section steel and be connected with H shaped steel column by bolt, the web that connects channel-section steel is connected with the web of H shaped steel column by two bolts.
Preferably, H shape metal upright post lower end is connected on the longeron on the bridge edge of a wing or the roadbed, the pre-buried U bolt that is provided with in longeron, U bolt fixedly rectangular steel plates in the longeron end face, the metal upright post lower end is welded to connect in fixing rectangular steel plates, and strengthens connecting by the steel plate of putting more energy into.
Preferably, sound barrier column spacing is 2.0m, and the width of corresponding concrete plate and transparent panel is 1.95m.
Preferably, sound barrier column spacing is 1.28m, and the width of corresponding concrete plate and transparent panel is 1.27m.
Preferably, the transparent plate hight 1.0m～1.5m of described sound insulation, thick 20mm, the sound insulation transparent panel adopts the reinforcement acrylic material to make.
In the installation process, metal upright post at first is installed, can connect by U bolt, welding or the pre-buried mode metal upright post of constructing, in case of necessity with U bolt be connected steel plate welding in case bolt looseness, afterwards, the prestressed concrete plate is inserted metal upright post, its bottom groove cooperates the rubber pad of band projection, plate passes through fastening bolt, rubber cushion blocks etc. are fixed in the H shaped steel column of both sides, be provided with fixedly channel-section steel at the top of concrete plate, the transparent panel lower end is fixed in the channel-section steel by fastening bolt and rubber pad, cushion block is passed through in the transparent panel side, rubber pad cooperates fastening bolt to be fixed in the H shaped steel, the abnormity at arc sound absorption top connects channel-section steel and is fixed in H shaped steel top by connecting bolt, and Open Side Down at arc sound absorption top channel-section steel is in conjunction with the fixing transparent sound barrier top of fastening bolt.
Compared with prior art, the present invention has following advantage:
The high speed railway sound barrier of band arc sound absorption top structure can absorb effectively and prevent that the noises such as air force of high-speed railway train wheel-rail noise and car body from propagating to the circuit both sides.H shaped steel metal upright post and prestressed concrete plate can effectively be resisted wind loads and natural typhoon load (50m/s wind speed) the chronic fatigue effect of high speed to the 400km/h train.Tensile stress does not appear in bottom precast prestressed concrete unit plate under load, effectively prevent the cracking of plate.The rigidity of plate is big, is out of shape for a short time, has good anti-fatigue performance, endurance quality, and side is installed acoustical board and can effectively be absorbed railroad noise within it, and noise reduction is remarkable.It is low to make prestressed concrete sound barrier sound absorption plate expense, and it is convenient that installation is changed.The sound insulation transparent panel is realized the requirement of bullet train passenger view to sound barrier, and the sound insulation transparent panel adopts material such as the thick reinforcement acrylic of the high 20mm of 1.0m～1.5m, and defening effect is good, and materials ' durability is good.Arc sound absorption top adopt porous metal plate cooperate abnormity connect channel-section steel and fixedly the transparent panel channel-section steel be formed by connecting, be convenient to produce in factory, on-the-spot install with change convenient.Sound absorption top porous metal plate and internal cavities are filled sound insulating material, can effectively absorb the car body aerodynamic noise of bullet train noise, particularly low frequency, reduce the diffraction of noise at the sound barrier top; Secondly, itself has increased sound barrier arc-shaped head, and the effective sound insulation that further improves sound barrier to the arc structure in line side highly can effectively reduce noise, and than common height, no arc top sound barrier, its noise reduction improves greatly.Be fit to be applied to positions such as the exigent city area of noise isolation, school, hospital, residential blocks.
The main member of noise barrier structure of the present invention adopts plant produced, field erected method construction, arc sound absorption head, transparent panel, precast prestressed concrete unit plate, but all large-scale plant is prefabricated, install at the scene, the replacing construction is convenient, and member is rationally stressed.
Description of drawings
Fig. 1 is a high speed railway sound barrier schematic diagram of the present invention;
Fig. 2 A is the high speed railway sound barrier A-A generalized section among Fig. 1;
Fig. 2 B is the high speed railway sound barrier B-B generalized section among Fig. 1;
Fig. 2 C is the high speed railway sound barrier C-C generalized section among Fig. 1;
Fig. 3 A is the precast concrete acoustical board schematic diagram in the high speed railway sound barrier of the present invention;
Fig. 3 B is the precast concrete acoustical board D-D generalized section among Fig. 3 A;
Fig. 3 C is the precast concrete acoustical board E-E generalized section among Fig. 3 A;
Fig. 4 is a high speed railway sound barrier transparent sound barrier of the present invention bottom connection diagram;
Fig. 5 A is the arc top of high speed railway sound barrier of the present invention, transparent sound barrier and H shaped steel connection diagram;
Fig. 5 B is the F-F generalized section in the arc top of Fig. 5 A high speed railway sound barrier, transparent sound barrier and the H shaped steel connection diagram;
Fig. 5 C is the G-G generalized section in the arc top of Fig. 5 A high speed railway sound barrier, transparent sound barrier and the H shaped steel connection diagram;
Fig. 6 A is the H shaped steel metal upright post and the concrete longeron connection diagram of high speed railway sound barrier of the present invention;
Fig. 6 B is that the H shaped steel metal upright post of the high speed railway sound barrier among Fig. 6 A is connected schematic top plan view with the concrete longeron;
Fig. 7 A is the connection diagram of high speed railway sound barrier H shaped steel metal upright post of the present invention and precast concrete acoustical board;
Fig. 7 B is that the H shaped steel metal upright post of the high speed railway sound barrier among Fig. 7 A is connected schematic top plan view with the concrete longeron;
Among the figure: 1, H shaped steel metal upright post, 2, the precast concrete acoustical board, 21, the precast concrete plate, 22, the sound absorption panel, 23, bolt, 24, groove, 25, bolt hole, 3, transparent sound barrier, 4, arc sound absorber, 7, the convex rubber pad, 8, the flute profile rubber pad, 32, channel-section steel.
The specific embodiment
As shown in Figure 1, high speed railway sound barrier comprises H shaped steel metal upright post 1, inserts the precast concrete acoustical board 2 of H shaped steel metal upright post 1, and precast concrete acoustical board 2 tops are equipped with transparent sound barrier 3, and arc sound absorption top 4 is set at the top of transparent sound barrier 3.
Precast concrete acoustical board 2 is linked and packed by bolt 23 by precast concrete plate 21 and sound absorption panel 22 and forms; Connect and the problem that insulates against sound for solving precast concrete plate bottom, the bottom of precast concrete plate 21 is provided with groove 24, and cooperates convex rubber pad 7 to realize the effect that flexibly connects and reach the sound decoupling zero of precast concrete plate 21 bottoms and concrete longeron; Meanwhile, the side end at concrete insertion H shaped steel adopts flute profile rubber pad 8 to fix concrete plate 21 and isolate the high-speed railway noise; Be provided with lifting pre-embedded bolt hole 25 at the top of precast concrete plate 21.
For improving connection integrity and overall durability, fix channel-section steel 32 at the top of precast concrete plate 21 by pre-embedded bolt 31, and fix the bottom of transparent sound barriers 3 by pushing tow bolt and channel-section steel 32; Transparent sound barrier 3 both sides have adopted fastening bolt 33 and fixedly rubber strip 34 is fastening with H shaped steel metal column.The high 20mm of transparent sound barrier 1.0m～1.5m is thick, adopts the reinforcement acrylic material to make.
As shown in Figure 7, arc sound absorption top comprises that abnormity connects channel-section steel 41, inserts the microwell plate arc sound absorber 42 that abnormity connects channel-section steel, the abnormity at two ends connects channel-section steel and is welded to connect by No. 8 channel-section steels 43 that Open Side Down, No. 8 channel-section steels 43 that Open Side Down also are used for fixing transparent sound barrier top simultaneously, the top that is transparent sound barrier 3 snaps in the downward channel-section steel 43 at arc sound absorption top, and fixes by fastening bolt, rubber pad, steel bar.But also filling sucting sound material in microwell plate arc sound absorber 42 its cavitys.The end of both sides abnormity channel-section steel 41 is connected with both sides H shaped steel column with bolt respectively, totally 10 of connecting bolts, wherein 8 be the special-shaped channel-section steel edge of a wing with H shaped steel edge of a wing connecting bolt, 2 is that special-shaped channel-section steel web is with H shaped steel web connecting bolt.
H shape metal upright post 1 lower end is connected on the longeron 5 on the bridge edge of a wing or the roadbed, the pre-buried U bolt 51 that is provided with in longeron 5, fixedly rectangular steel plates 52 is in the longeron end face for U bolt 51, and metal upright post 1 lower end is welded to connect in fixing rectangular steel plates 51, and strengthens connecting by the steel plate 53 of putting more energy into.
Metal upright post is connected and fixed by the U-bolt that is embedded in advance in place, the bridge edge of a wing longeron.In specifically fixedly connected, the U-bolt of 3 diameter 20mm is fixed a 40cm * 40cm and is connected steel plate in the longeron end face, and the fillet welding of H shaped steel is welded in the connection steel plate, and adopts 4 stiffeners to strengthen connecting H shaped steel and connection steel plate.In case of necessity with U bolt be connected steel plate welding in case bolt looseness.
Sound barrier column separation criteria value is 2.0m, the normal width of corresponding concrete plate and transparent panel is 1.95m, end on bridge can be adjusted into column spacing 1.28m according to actual conditions, and the width of corresponding concrete plate and transparent sound barrier is that 1.27m is fit to 32m, 24m, 20m standard beam.And can be according to different train speeds and natural wind loading condition and specifically adjust suitable width.
This invention sound barrier is used for bridge, can also be used for the roadbed sound barrier.For the connected mode of metal upright post, can adopt H shaped steel directly to insert pre-buried method in the concrete longeron; Also can adopt H shaped steel to be welded to connect and be fixedly coupled steel plate in pre-buried U-bolt; Can also adopt to connect steel plate engagement formation reinforcing bar and be embedded in advance in the concrete longeron, and H shaped steel is welded in connects steel plate and fix.
Concrete work progress:
The work progress of sound barrier is divided into two parts of prefabrication and on-the-spot installation.(1) H shaped steel is made according to the accurate blanking of design size in factory, and makes bolt hole.(2) the prestressed concrete plate adopts prefabrication production, and the sound absorption panel adopts prefabrication equally.(3) welding after the blanking of arc sound absorption top abnormity channel-section steel, rectification moulding, and accurately make bolt hole, the true blanking of bottom holddown groove aluminium, the micropore acoustic isolater adopts the microvoid metal sheet to roll and forms, and in its cavity, fill sound insulating material, the micropore acoustic isolater is inserted two ends abnormity channel-section steel, and fixedly channel-section steel is welded to connect in abnormity channel steel shape camber sound absorption top, two ends.(4) transparent sound barrier is in strict accordance with the design size blanking.(5) at the scene in the installation process, at first connect steel plate and be embedded in advance in the bridge edge of a wing or the roadbed sound barrier longeron, and H shaped steel is fixedly welded on the connection steel plate by pre-buried U-bolt or distributing bar.(6) hoisting prefabricated concrete plate inserts between the H shaped steel, and convex rubber pad (sound decoupling zero device) is placed in the bottom, and insert the both sides of H shaped steel and place the flute profile rubber pad, and by the fixing prestressed concrete plate of fastening bolt.(7) more transparent sound barrier is inserted H shaped steel, the bottom is inserted and is installed in the channel-section steel at concrete plate top, and by the fixing transparent panel bottom of fastening bolt, and transparent panel both sides placement cushion block, rubber pad etc. also are connected and fixed by fastening bolt.(8) arc the is absorbed sound special-shaped channel-section steel at two ends, top inserts H shaped steel, and by fixing special-shaped channel-section steel of connecting bolt and H shaped steel, it is partly fastening by fastening bolt, rubber pad connection the transparent panel top to be snapped in downward channel-section steel again.
Claims (10)
1. a high speed railway sound barrier comprises H shaped steel metal upright post, inserts the precast concrete acoustical board of H shaped steel metal upright post, and precast concrete acoustical board top is equipped with transparent sound barrier, and arc sound absorption top is set at the top of transparent sound barrier.
2. high speed railway sound barrier according to claim 1 is characterized in that: the precast concrete acoustical board is linked and packed by bolt by precast concrete plate and sound absorption panel and forms; The bottom of precast concrete plate is provided with groove, is combined with the convex rubber pad in the groove; The side end that inserts H shaped steel at the precast concrete plate adopts the flute profile rubber pad to fix the concrete plate to isolate the high-speed railway noise; Be provided with lifting pre-embedded bolt hole at the top of precast concrete plate.
3. high speed railway sound barrier according to claim 1 is characterized in that: precast concrete plate thickness is 8cm, and configuration two dimension prestressing reinforcing bar; The sound absorption panel is selected cement based porous material goods for use.
4. high speed railway sound barrier according to claim 1 is characterized in that: the top at the precast concrete plate fixes channel-section steel by pre-embedded bolt, and fixes the bottom of transparent sound barrier by pushing tow bolt and channel-section steel; Transparent sound barrier both sides have adopted fastening bolt and fixedly rubber strip and H shaped steel metal column are fastening.
5. high speed railway sound barrier according to claim 1, it is characterized in that: arc sound absorption top comprises that the abnormity that is arranged on transparent sound barrier both sides connects channel-section steel, inserts the microwell plate arc sound absorber that abnormity connects channel-section steel, the abnormity of both sides connects channel-section steel and is welded to connect with a channel-section steel that Open Side Down, the top of transparent sound barrier snaps in abnormity and connects in the channel-section steel, and fixes by fastening bolt, rubber pad, steel bar; It is the curved channel-section steel of facade that abnormity connects channel-section steel.
6. high speed railway sound barrier according to claim 5 is characterized in that: microwell plate arc sound absorber has a cavity, filling sucting sound material in the cavity; Connect channel-section steel and be connected with H shaped steel column by bolt, the web that connects channel-section steel is connected with the web of H shaped steel column by two bolts.
7. high speed railway sound barrier according to claim 1, it is characterized in that: H shape metal upright post lower end is connected on the longeron on the bridge edge of a wing or the roadbed, the pre-buried U bolt that is provided with in longeron, U bolt fixedly rectangular steel plates in the longeron end face, the metal upright post lower end is welded to connect in fixing rectangular steel plates, and strengthens connecting by the steel plate of putting more energy into.
8. high speed railway sound barrier according to claim 1 is characterized in that: sound barrier column spacing is 2.0m, and the width of corresponding concrete plate and transparent panel is 1.95m.
9. high speed railway sound barrier according to claim 1 is characterized in that: sound barrier column spacing is 1.28m, and the width of corresponding concrete plate and transparent panel is 1.27m.
10. high speed railway sound barrier according to claim 1 is characterized in that: the transparent plate hight 1.0m～1.5m of described sound insulation, thick 20mm, the sound insulation transparent panel adopts the reinforcement acrylic material to make.
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| CN201010617017.3A CN102051843B (en) | 2010-12-31 | 2010-12-31 | High-speed railway noise barrier |
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| CN201010617017.3A CN102051843B (en) | 2010-12-31 | 2010-12-31 | High-speed railway noise barrier |
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| CN102051843B CN102051843B (en) | 2015-01-14 |
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| CN103422450A (en) * | 2013-07-11 | 2013-12-04 | 西南交通大学 | Combined load shedding type sound barrier for high speed railway |
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| CN107178045A (en) * | 2017-07-14 | 2017-09-19 | 山西尚风科技股份有限公司 | High ferro non-metallic baffle is seated device and connected structure |
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| CN108660956A (en) * | 2018-07-25 | 2018-10-16 | 中南大学 | Combined orbit traffic sound wind barrier |
| CN108774961A (en) * | 2018-05-06 | 2018-11-09 | 桂林理工大学 | The production method of prefabricated PC Reactive Powder Concrete acoustic barrier unit board |
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| CN110685218A (en) * | 2019-10-28 | 2020-01-14 | 广州地铁设计研究院股份有限公司 | Connection structure of rail transit sound barrier stand and bridge baffle |
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| CN111893908A (en) * | 2020-07-03 | 2020-11-06 | 华东交通大学 | Urban overhead ventilation type combined sound barrier |
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| CN116695604A (en) * | 2023-08-08 | 2023-09-05 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Ecological noise reduction barrier for traffic noise control |
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| CN116695604A (en) * | 2023-08-08 | 2023-09-05 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Ecological noise reduction barrier for traffic noise control |
| CN116695604B (en) * | 2023-08-08 | 2023-10-13 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Ecological noise reduction barrier for traffic noise control |
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