CN102051843B - High-speed railway noise barrier - Google Patents
High-speed railway noise barrier Download PDFInfo
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- CN102051843B CN102051843B CN201010617017.3A CN201010617017A CN102051843B CN 102051843 B CN102051843 B CN 102051843B CN 201010617017 A CN201010617017 A CN 201010617017A CN 102051843 B CN102051843 B CN 102051843B
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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 component used 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, and along with in September, 2010 Shanghai-Hangzhou high ferro opens operation, the high-speed railway operation mileage that China has put into effect reaches 7055 kilometers, ranks first in the world.And 1.3 ten thousand km will be reached in high-speed railway operation mileages in 2012, exceed other various countries' summations.While the fast development of high-speed railway mileage, the overall trip speed of train walks the prostatitis in the world equally, and domestic CR H3 type " Harmony " motor train unit train once created world's railway operation F-Zero record of 394.3 kilometers on June 24th, 2008 in Beijing-Tianjin inter-city high ferro.On September 28th, 2010, domestic " Harmony " CRH380A a new generation of China EMU is in Shanghai-Hangzhou high ferro trial run way, and F-Zero reaches 416.6 kilometers, again refreshes world's railway operation trial the most at a high speed.Therefore China is expected to the highest overall trip speed breaking through current 350km/h, and rate is introduced into the high speed that 380km/h even reaches 400km/h.
Sound barrier prevents and treats railroad train running noises to one of major measure of ambient contamination, at home and abroad extensively adopts.Frankfurt, Germany-Cologne circuit is when train operation speed 250km/h ~ 330km/h, the aluminium alloys unit plate fracture of the sound barrier that the impulsive wind pressure that bullet train produces causes it to arrange, steel post loosens with the connecting bolt on basis, and result makes this circuit sound barrier have to remove reconstruction completely.Along with the raising of bullet train speed, the impulsive wind pressure being applied to sound barrier during train high-speed cruising is also increasing, and pulsating wind pressure peak value is directly proportional to velocity squared substantially, and ripple frequency is directly proportional to speed substantially.The sound barrier that current design there is no for more than 350km/h speed per hour with application, secondly design at present and the sound barrier applied not yet resolve long-term dynamics and the stressed problem of fatigue of High Speed Railway Trains impulsive wind pressure.Therefore, design and be applicable at a 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 current international high speed railway construction.
In acoustic current barrier technique, conventional high speed railway sound barrier form is single, mainly contains upright metal upright post and inserts metal sheet sound barrier, monolithic concrete sound barrier.Metal upright post is inserted metal sheet sound barrier and is adopted H profile steel column, and the metal unit plates such as 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.For ordinary concrete and prestressed concrete sound barrier from great, crack resistance is poor, and fatigue durability is poor, is connected weakness with roadbed or bridge, construction inconvenience, and not easy-maintaining and replacing after disease occurs.Current metal upright post board plug type sound barrier, conventional metal backing structure is difficult to the dynamic repeated action adapting to 250km/h and above speed bullet train impulsive wind pressure, easily fatigue failure occurs.Glass fiber Reinforced Plastics unit plate (GRP) sound barrier with ribbing now researched and developed has good mechanical property and elastic deformability, from heavy and light, and excellent noise reduction effect, but its shortcoming is expense too expensive, inconvenience is promoted the use of.Be limited to the highest operation of current high-speed railway and not yet break through 350km/h, therefore less for the noise barrier structure research be applicable under 380 ~ 400km/h high-speed railway strong noise, high train pulsating fatigue load, more without utility structure.
Summary of the invention
For overcoming the 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 is high, endurance, durability good, easy construction, being convenient to the high speed railway sound barrier changed, cost is low.
The design of the sound barrier structure for high speed railways result that to be train aerodynamic-force force request require with sound insulation and noise reducing combines.Structure reduces deadweight under first must meeting the condition of train wind loads and natural wind load as far as possible, and constructability installation etc.Meanwhile, arc sound absorption top is set for reducing train body top section aerodynamic noise as far as possible.
The present invention adopts following technical scheme:
A kind of high speed railway sound barrier, comprises H profile steel metal upright post, inserts the precast concrete acoustical board of H profile steel metal upright post, is provided with transparent sound barrier above precast concrete acoustical board, arranges arc sound absorption top at the top of transparent sound barrier.
Preferably, precast concrete acoustical board is bolted by precast concrete plate and sound absorption panel and is assembled; The bottom of precast concrete plate is provided with groove, is combined with convex rubber pad in groove; The side end inserting H profile steel at precast concrete plate adopts flute profile rubber pad to fix concrete plate to isolate high-speed railway noise; Lifting pre-embedded bolt hole is provided with at the top of precast concrete plate.
Preferably, precast concrete plate thickness is 8cm, and configures two dimension prestressing reinforcing bar; Cement based porous material goods selected by sound absorption panel.
Preferably, fix channel-section steel at the top of precast concrete plate by pre-embedded bolt, and fix the bottom of transparent sound barrier by pushing tow bolt and channel-section steel; It is fastening that transparent sound barrier both sides have employed fastening bolt and fixing rubber strip and H profile steel metal column.
Preferably, arc sound absorption top comprises the microwell plate arc sound absorber that the abnormity being arranged on transparent sound barrier both sides connects channel-section steel, inserts abnormity connection channel-section steel, the abnormity of both sides connects channel-section steel one channel-section steel that Open Side Down and is welded to connect, the top of transparent sound barrier snaps in abnormity and connects in channel-section steel, and is fixed 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 cavity; Connect channel-section steel to be connected with H profile steel column by bolt, the web connecting channel-section steel is connected with the web of H profile steel column by two bolts.
Preferably, H-shaped metal upright post lower end is connected on the longeron on the bridge edge of a wing or roadbed, pre-buriedly in longeron arranges U bolt, and U bolt fixes rectangular steel plates in longeron end face, metal upright post lower end is welded to connect in fixing rectangular steel plates, and strengthens connecting by stiffened steel plates.
Preferably, noise barrier stand column spacing is 2.0m, and the width of corresponding concrete plate and transparent panel is 1.95m.
Preferably, noise barrier stand column spacing is 1.28m, and the width of corresponding concrete plate and transparent panel is 1.27m.
Preferably, described sound insulation transparent plate hight 1.0m ~ 1.5m, thick 20mm, sound insulation transparent panel adopts reinforcement acrylic material to make.
In installation process, first metal upright post is installed, connect by U bolt, welding or pre-buried mode are constructed metal upright post, if desired U bolt is welded with junction steel plate in case bolt looseness, afterwards, prestressed concrete plate is inserted metal upright post, the rubber pad of its bottom groove mating band projection, plate passes through fastening bolt, rubber cushion blocks etc. are fixed in the H profile steel column of both sides, fixing channel-section steel is provided with at the top of concrete plate, transparent panel lower end is fixed in channel-section steel by fastening bolt and rubber pad, cushion block is passed through in transparent panel side, rubber pad coordinates fastening bolt to be fixed in H profile steel, the abnormity at arc sound absorption top connects channel-section steel and is fixed on H profile steel top by connecting bolt, Open Side Down at top that channel-section steel fixes transparent sound barrier top in conjunction with fastening bolt in arc sound absorption.
Compared with prior art, tool of the present invention has the following advantages:
High speed railway sound barrier with arc sound absorption top structure effectively can absorb and prevent the noises such as the air force of High Speed Railway Trains wheel-rail noise and car body from propagating to circuit both sides.H profile steel metal upright post and prestressed concrete plate, can effectively resist at a high speed to wind loads and natural typhoon load (50m/s wind speed) the chronic fatigue effect of 400km/h train.There is not tensile stress in bottom precast prestressed concrete unit plate, effectively prevent the cracking of plate under load.The rigidity of plate is large, is out of shape little, has good anti-fatigue performance, endurance quality, and within it installation acoustical board effectively can absorb railroad noise, and noise reduction is remarkable.Make prestressed concrete sound barrier sound absorption plate expense low, it is convenient that installation is changed.Sound insulation transparent panel realizes the requirement of bullet train passenger view to sound barrier, and sound insulation transparent panel adopts the materials such as the thick reinforcement acrylic of 1.0m ~ 1.5m height 20mm to make, and defening effect is good, and materials ' durability is good.Arc sound absorption top employing porous metal plate coordinates abnormity to connect channel-section steel and fixing transparent panel channel-section steel is formed by connecting, and be convenient to produce in factory, in-site installation is convenient with replacing.Sound absorption top porous metal plate and internal cavities fill sound insulating material, effectively can absorb the car body aerodynamic noise of bullet train noise, particularly low frequency, reduce the diffraction of noise at sound barrier top; Secondly, arc-shaped head itself increases sound barrier, and the arc structure to line side improves effective sound insulation height of sound barrier further, and effectively can reduce noise, compared to usual height, without arc top sound barrier, its noise reduction improves greatly.Be applicable to being 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, the construction of field erected method, arc sound absorption head, transparent panel, precast prestressed concrete unit plate, all can large-scale plant prefabricated, in-site installation, change construction convenient, component reasonable mechanical.
Accompanying drawing explanation
Fig. 1 is 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 in Fig. 1;
Fig. 2 B is the high speed railway sound barrier B-B generalized section in Fig. 1;
Fig. 2 C is the high speed railway sound barrier C-C generalized section in Fig. 1;
Fig. 3 A is the precast concrete acoustical board schematic diagram in high speed railway sound barrier of the present invention;
Fig. 3 B is the precast concrete acoustical board D-D generalized section in Fig. 3 A;
Fig. 3 C is the precast concrete acoustical board E-E generalized section in Fig. 3 A;
Fig. 4 is high speed railway sound barrier transparent sound barrier bottom of the present invention connection diagram;
Fig. 5 A is the arc top of high speed railway sound barrier of the present invention, transparent sound barrier and H profile 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 H profile 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 H profile steel connection diagram;
Fig. 6 A is H profile 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 profile steel metal upright post of high speed railway sound barrier in Fig. 6 A is connected schematic top plan view with concrete longeron;
Fig. 7 A is the connection diagram of high speed railway sound barrier H profile steel metal upright post of the present invention and precast concrete acoustical board;
Fig. 7 B is that the H profile steel metal upright post of high speed railway sound barrier in Fig. 7 A is connected schematic top plan view with concrete longeron;
In figure: 1, H profile steel metal upright post, 2, precast concrete acoustical board, 21, precast concrete plate, 22, sound absorption panel, 23, bolt, 24, groove, 25, bolt hole, 3, transparent sound barrier, 4, arc sound absorber, 7, convex rubber pad, 8, flute profile rubber pad, 32, channel-section steel.
Detailed description of the invention
As shown in Figure 1, high speed railway sound barrier comprises H profile steel metal upright post 1, inserts the precast concrete acoustical board 2 of H profile steel metal upright post 1, is provided with transparent sound barrier 3 above precast concrete acoustical board 2, arranges arc sound absorption top 4 at the top of transparent sound barrier 3.
Precast concrete acoustical board 2 to be linked and packed by bolt 23 by precast concrete plate 21 and sound absorption panel 22 and to form; Connect the problem with sound insulation for solving bottom precast concrete plate, the bottom of precast concrete plate 21 is provided with groove 24, and coordinate convex rubber pad 7 realize bottom precast concrete plate 21 with the flexibly connecting and reach the effect of sound decoupling zero of concrete longeron; Meanwhile, flute profile rubber pad 8 is adopted to fix concrete plate 21 and isolate high-speed railway noise at the side end of concrete insertion H profile steel; Lifting pre-embedded bolt hole 25 is provided with at the top of precast concrete plate 21.
Precast concrete plate 21 thickness is 8cm, and configures two dimension prestressing reinforcing bar; Sound absorption panel selects cement based porous material as wood cement concrete, perlite porous absorption material, mineral wool sound absorption board or polyester fiber acoustical board etc.Sound absorption panel is connected by the bolt hole being embedded in precast concrete plate in advance.
For improving connection integrity and overall durability, fixing channel-section steel 32 at the top of precast concrete plate 21 by pre-embedded bolt 31, and fixing the bottom of transparent sound barrier 3 by pushing tow bolt and channel-section steel 32; Transparent sound barrier 3 both sides have employed fastening bolt 33 and fixing rubber strip 34 is fastening with H profile steel metal column.Transparent sound barrier 1.0m ~ 1.5m height 20mm is thick, adopts reinforcement acrylic material to make.
As shown in Figure 7, arc sound absorption top comprises abnormity and connects channel-section steel 41, inserts the special-shaped microwell plate arc sound absorber 42 connecting channel-section steel, the abnormity at two ends is connected 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 are simultaneously also for fixing transparent sound barrier top, namely the top of transparent sound barrier 3 snaps in the downward channel-section steel 43 at arc sound absorption top, and is fixed by fastening bolt, rubber pad, steel bar.Also can filling sucting sound material in its cavity of microwell plate arc sound absorber 42.The end special channel-section steel 41 of both sides is connected with both sides H profile steel column with bolt respectively, connecting bolt totally 10, wherein 8 be the special-shaped channel-section steel edge of a wing with H profile steel edge of a wing connecting bolt, 2 is that special-shaped channel-section steel web is with H profile steel web connecting bolt.
H-shaped metal upright post 1 lower end is connected on the longeron 5 on the bridge edge of a wing or roadbed, pre-buried in longeron 5 U bolt 51 is set, U bolt 51 fixes rectangular steel plates 52 in longeron end face, and metal upright post 1 lower end is welded to connect in fixing rectangular steel plates 51, and strengthens connecting by stiffened steel plates 53.
Metal upright post passes through the U-bolt be embedded in bridge edge of a wing place longeron in advance and is connected and fixed.Concrete be fixedly connected with, the U-bolt of 3 diameter 20mm fixes one piece of 40cm × 40cm junction steel plate in longeron end face, and H profile steel fillet welding is welded in junction steel plate, and adopts 4 pieces of stiffeners to strengthen connecting H profile steel and junction steel plate.If desired U bolt is welded in case bolt looseness with junction steel plate.
Noise barrier stand 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 to column spacing 1.28m according to actual conditions, and the width of corresponding concrete plate and transparent sound barrier is that 1.27m is applicable to 32m, 24m, 20m Standard Beam.And can specifically adjust suitable width according to different train speeds and natural wind loading condition.
This invention sound barrier is used for bridge, can also be used for roadbed sound barrier.For the connected mode of metal upright post, H profile steel can be adopted directly to insert method pre-buried in concrete longeron; Also H profile steel can be adopted to be welded to connect in the fixing junction steel plate of embedded U-shaped bolt; Junction steel plate engagement formation steel bar preassembling can also be adopted to be embedded in concrete longeron, and H profile steel is welded in junction steel plate fixes.
Concrete work progress:
The work progress of sound barrier is divided into prefabrication and in-site installation two parts.(1) H profile steel makes according to the accurate blanking of design size in factory, and makes bolt hole.(2) prestressed concrete plate adopts prefabrication to produce, and sound absorption panel adopts prefabrication equally.(3) welding after the abnormity channel-section steel blanking of arc sound absorption top, correct shaping, and accurately make bolt hole, the fixing accurate blanking of channel-section steel in bottom, micropore acoustic isolater adopts micro-empty metal sheet to roll and forms, and sound insulating material is filled in its cavity, micropore acoustic isolater is inserted two ends abnormity channel-section steel, and fixing channel-section steel is welded to connect in abnormity channel-section steel formation arc sound absorption top, two ends.(4) transparent sound barrier is in strict accordance with design size blanking.(5), at the scene in installation process, be first embedded in advance in the bridge edge of a wing or roadbed sound barrier longeron by embedded U-shaped bolt or distributing bar junction steel plate, and H profile steel is fixedly welded on junction steel plate.(6) hoisting prefabricated concrete plate inserts between H profile steel, and convex rubber pad (sound decoupling device) is placed in bottom, and flute profile rubber pad is placed in the both sides of inserting H profile steel, and fixes prestressed concrete plate by fastening bolt.(7) more transparent sound barrier is inserted H profile steel, bottom is inserted and is arranged in the channel-section steel at concrete plate top, and fixes bottom transparent panel by fastening bolt, and transparent panel both sides are placed cushion block, rubber pad etc. and are connected and fixed by fastening bolt.(8) the special-shaped channel-section steel at two ends, top of being absorbed sound by arc inserts H profile steel, fixes special-shaped channel-section steel and H profile steel by connecting bolt, then transparent panel top is snapped in downward channel-section steel part and connect fastening by fastening bolt, rubber pad.
Claims (1)
1. a high speed railway sound barrier, comprises H profile steel metal upright post, inserts the precast concrete acoustical board of H profile steel metal upright post, is provided with transparent sound barrier above precast concrete acoustical board, arranges arc sound absorption top at the top of transparent sound barrier; Precast concrete acoustical board is bolted by precast concrete plate and sound absorption panel and is assembled; The bottom of precast concrete plate is provided with groove, is combined with convex rubber pad in groove; The side end inserting H profile steel at precast concrete plate adopts flute profile rubber pad to fix concrete plate to isolate high-speed railway noise; Lifting pre-embedded bolt hole is provided with at the top of precast concrete plate; Precast concrete plate thickness is 8cm, and configures two dimension prestressing reinforcing bar; Cement based porous material goods selected by sound absorption panel; Fix channel-section steel at the top of precast concrete plate by pre-embedded bolt, and fix the bottom of transparent sound barrier by pushing tow bolt and channel-section steel; It is fastening that transparent sound barrier both sides have employed fastening bolt and fixing rubber strip and H profile steel metal column; Arc sound absorption top comprises the microwell plate arc sound absorber that the abnormity being arranged on transparent sound barrier both sides connects channel-section steel, inserts abnormity connection channel-section steel, the abnormity of both sides connects channel-section steel one channel-section steel that Open Side Down and is welded to connect, the top of transparent sound barrier snaps in abnormity and connects in channel-section steel, and is fixed by fastening bolt, rubber pad, steel bar; It is the curved channel-section steel of facade that abnormity connects channel-section steel; Microwell plate arc sound absorber has a cavity, filling sucting sound material in cavity; Connect channel-section steel to be connected with H profile steel column by bolt, the web connecting channel-section steel is connected with the web of H profile steel column by two bolts; H-shaped metal upright post lower end is connected on the longeron on the bridge edge of a wing or roadbed, pre-buriedly in longeron arranges U bolt, and U bolt fixes rectangular steel plates in longeron end face, and metal upright post lower end is welded to connect in fixing rectangular steel plates, and strengthens connecting by stiffened steel plates;
Noise barrier stand column spacing is 2.0m, and the width of corresponding concrete plate and transparent panel is 1.95m;
Noise barrier stand column spacing is 1.28m, and the width of corresponding concrete plate and transparent panel is 1.27m;
Described sound insulation transparent plate hight 1.0m ~ 1.5m, thick 20mm, sound insulation transparent panel adopts reinforcement acrylic material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN102051843A CN102051843A (en) | 2011-05-11 |
| CN102051843B true CN102051843B (en) | 2015-01-14 |
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| CN103422450B (en) * | 2013-07-11 | 2016-02-03 | 西南交通大学 | A kind of high-speed railway compound off-load formula sound barrier |
| CN105603894B (en) * | 2014-11-10 | 2018-06-26 | 苏交科集团股份有限公司 | A kind of sound barrier top noise elimination structure |
| CN104514204B (en) * | 2014-12-17 | 2016-08-24 | 森特士兴集团股份有限公司 | A kind of outer-enwraped type septum pellucidum sound barrier |
| CN105421257A (en) * | 2015-12-24 | 2016-03-23 | 江苏国强镀锌实业有限公司 | Cement-based non-metal sound barrier unit plate |
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| RU2657907C1 (en) * | 2017-08-03 | 2018-06-18 | Николай Валерьевич Денисов | Acoustic panel |
| CN107476211B (en) * | 2017-09-29 | 2023-06-16 | 正升环境科技股份有限公司 | Sound barrier with barrier body without framework |
| 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 |
| CN108660956B (en) * | 2018-07-25 | 2023-11-03 | 中南大学 | Combined track traffic sound and wind barrier |
| CN109736218A (en) * | 2019-01-31 | 2019-05-10 | 四川君尚亚克力制造有限公司 | A kind of high molecular material sound barrier |
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| CN111893909B (en) * | 2020-07-03 | 2022-12-02 | 华东交通大学 | Easily maintain ventilation type sound barrier |
| CN111893908B (en) * | 2020-07-03 | 2022-12-02 | 华东交通大学 | Urban overhead ventilation type combined sound barrier |
| CN112779860A (en) * | 2021-01-15 | 2021-05-11 | 华观兰 | Rail bearing platform for urban rail transit bridge |
| 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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