CN208379346U - A kind of noise reduction system of rail traffic - Google Patents

Abstract

A kind of noise reduction system of rail traffic, including the pedestal being located between ladder-type sleepers, abatvoix is equipped in pedestal, abatvoix includes main body and several wedges for being set to body top face and being distributed along longitudinal direction, abatvoix includes haydite aggregate, the second haydite that haydite aggregate includes the first haydite that partial size is 1-5mm and partial size is 5-10mm, the first haydite and the second haydite are combined by cement gel.Abatvoix has the characteristics that install and disassembly mode simplicity, drainability are strong.Aggregate has many advantages, such as environment-protecting and non-poisonous, radiation hardness, high temperature resistant, insulation, fire prevention.The principle of wedge application sound wave gradually transition improves high frequency sound-absorbing and reduces the effect of air pressure wave, is conducive to alleviate acoustic pressure, reduces influence of the pressure wave to vehicle.The porous sound absorbing plate made of a variety of high-strength hard haydites, the structure with the continuous hole of honeycomb, and there is good sound wave wideband response, the internal microcellular structure of haydite itself has reached optimal sound-absorbing effect by product.

Description

A kind of noise reduction system of rail traffic

Technical field

The utility model relates to Transit Equipment noise reduction technology, especially a kind of noise reduction system of rail traffic.

Background technique

With the expansion of human lives, in the modern city of countries in the world, urban transportation track inevitably exists It is passed through under dense population areas and important building, the vibration and noise that when train driving generates has seriously affected the normal work of people Make and lives.Therefore try the vibration and noise of reduction city rail, the good ground that improves is coordinated with nature and living environment, Cheng Liao People's question of common concern.Existing track soundproof measures mainly build sound barrier on track both sides, due to its principle sound Source, it is ineffective, and influence beautiful, it is therefore desirable to develop a kind of noise reduction product dedicated near wheel track.Such as Chinese patent Application No. is a kind of 201320576495.3 track acoustic board device, comprising between two siding tracks central block plate body and Side block plate body positioned at track two sides, the central block plate body and side block plate body are honeycomb structure made of porous inorganic material Plate body is equipped with longitudinal row in the middle part of the sleeper recess portion that the left and right ends of central block plate body are equipped with and sleeper matches, lower surface Ditch groove, on both sides of the middle are respectively equipped with plummer recess portion, and lower surface is equipped with lateral link groove, and the two of the side block plate body End is equipped with the concave-convex joint construction for realizing that plate body is connect with plate body.This kind of noise reduction product is the abatvoix with wedge, main It is to carry out sound-absorbing using Wedge structure, although also having certain Noise Reduction, noise reduction effect is undesirable.

Summary of the invention

The technical problem to be solved by the utility model is to provide a kind of noise reduction system of rail traffic, noise reduction effects More preferably.

In order to solve the above technical problems, the technical solution of the utility model is: a kind of noise reduction system of rail traffic includes The pedestal being located between ladder-type sleepers, is equipped with abatvoix in pedestal, the abatvoix include main body and it is several be set to body top face and The wedge being distributed along longitudinal direction, the abatvoix include haydite aggregate, and the haydite aggregate includes the first haydite that partial size is 1-5mm The second haydite for being 5-10mm with partial size, the first haydite and the second haydite pass through cement cementitious combination.The utility model abatvoix Top surface set indent and convex wedge, using the principle of sound wave gradually transition, improve high frequency sound-absorbing and reduce the effect of air pressure wave Fruit is conducive to alleviate acoustic pressure, reduces influence of the pressure wave to vehicle；Inside is made porous of the haydite of different-grain diameter size Abatvoix, product has the structure of the continuous hole of honeycomb, while generating the wideband response to sound wave, ensure that its sound-absorbing effect With the high intensity and durability of product；There is good permeable effect simultaneously, ponding cooperation haydite itself can be smoothly discharged Internal microcellular structure reaches better sound-absorbing effect.

As an improvement, the first haydite accounting weight is 60%, the second haydite accounting weight is 30%.

As an improvement, abatvoix with a thickness of 175mm.

As an improvement, the corner of abatvoix is arc-shaped.

As an improvement, the pedestal is formed by adjacent positive stop lug boss.

As an improvement, the pedestal is by the recessed formation in basis between two guide rails.

As an improvement, being equipped with rubber pad, the side of pit and sound-absorbing between the bottom of the pedestal and the bottom of abatvoix Rubber pad is equipped between the side of plate.

Brought beneficial effect is the utility model compared with prior art:

1, the top surface of the utility model abatvoix sets indent and convex wedge, using the principle of pedestal gradually transition, improves high Frequency sound-absorbing and the effect for reducing air pressure wave are conducive to alleviate acoustic pressure, reduce influence of the pressure wave to vehicle；

2, internal that porous sound absorbing plate is made with the haydite of different-grain diameter size, product has the knot of the continuous hole of honeycomb Structure, while the wideband response to sound wave is generated, it ensure that the high intensity and durability of its sound-absorbing effect and product；

3, cooperate the internal microcellular structure of haydite itself to reach better sound-absorbing effect, while there is good permeable effect Ponding can be smoothly discharged in fruit.

Detailed description of the invention

Fig. 1 is abatvoix perspective view.

Fig. 2 is the cross-section diagram after abatvoix is laid with.

Fig. 3 is the top view after the first rail abatvoix is laid with.

Fig. 4 is the top view after second of rail abatvoix is laid with.

Fig. 5 is the utility model abatvoix preparation flow figure.

Fig. 6 is abatvoix acoustical absorbance properties curve graph.

Fig. 7 is abatvoix quantitative measurement figure.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings of the specification.

As shown in Figures 1 to 3, a kind of noise reduction system of rail traffic is set in pedestal including the pedestal being located between ladder-type sleepers There is abatvoix, abatvoix direction along ng a path is laid with.The abatvoix includes main body 1 and several is set to 1 top surface of main body and along longitudinal direction The wedge 2 of distribution, main body and wedge 2 are integrated compression moulding, and the height of wedge 2 is 4cm.Entire abatvoix with a thickness of 175mm, through studying surface, the sound-absorbing effect and material utilization amount of the abatvoix of 175mm thickness are more reasonable, that is, reach sound-absorbing mark Standard, and cost is lower.

The material of the abatvoix mainly include haydite aggregate with it is cement cementitious, ash collection ratio is 0.3-0.5.Because according to material The difference of material, to adjust optimal ratio, cement is more, and intensity is high, and porosity is small, and acoustic absorptivity is with regard to poor, cement proportion Few or strength grade reduces, and porosity increases, and acoustic absorptivity is all right, but corresponding bending and compressive strength reaches again Less than design requirement, it is 0.3-0.5 as optimal balance point that the utility model ash, which integrates ratio,.

The second haydite that the haydite aggregate includes the first haydite that partial size is 1-5mm and partial size is 5-10mm；First pottery Grain accounting weight is 60%, and the second haydite accounting weight is 30%.The haydite aggregate passes through burning by 60-95% shale and 5-20% flyash Spherical haydite made of system.The internal microcellular structure of haydite itself reaches better sound-absorbing effect.

The corner of abatvoix is arcuate structure, and when installation is not easily damaged.

As shown in Figure 4,5, the preparation method of ballast bed of track abatvoix, comprising the following steps:

(1) ingredient: haydite aggregate and cement gel, wherein haydite aggregate includes the first haydite 300-800 L/m³With second Haydite 200-500 L/m³, cement gel 400-500kg/m³；

(2) be stirred: by haydite aggregate and gel by (2-4): 1 carries out being sufficiently mixed stirring；Then pigment, outer is added Add agent and 70L-90L/m³Water, stirring form the mixture that moisture content is 2.8%-3.9%；

(3) form: mixture passes through vibration and extrusion forming, vibration frequency 50Hz-60Hz, pressure value 180pa；

(4) conserve: it is strong to reach product standard on the 28th day for 30-60 degree steam curing in 1-3 days, 4-7 days room temperature moisture-keeping maintainings Degree.

The pigment that the utility model is selected is the inorganic pigment of zero methanol, and the additive is poly-carboxylic high-performance diminishing Agent.

Plate body is overturn by panel turnover device after conserving some strength kiln discharge, is allowed with 2 one side of wedge upward, after Stacking and packing are carried out, protection pad is placed before plate body and plate body before stacking, prevent gouging abrasion between plate body.

As shown in fig. 6, the utility model sound-absorbing board parameter:

1) sound absorbing performance is good, and NRC coefficient is up to 0.8 or more；

2) route actual measurement noise reduction effect is not less than 3dB (A)；

3) dry density >=700-900Kg/m3；

4) compression strength >=5.0Mpa.

The top surface of abatvoix sets indent and convex wedge 2, using the principle of sound wave gradually transition, improves high frequency sound-absorbing and reduction The effect of air pressure wave is conducive to alleviate acoustic pressure, reduces influence of the pressure wave to vehicle；Inside different-grain diameter size Haydite be made porous sound absorbing plate, product has the structure of the continuous hole of honeycomb, while generating the wideband response to sound wave, protects The high intensity and durability of its sound-absorbing effect and product are demonstrate,proved；There is good permeable effect simultaneously, ponding can be smoothly discharged The internal microcellular structure of cooperation haydite itself reaches better sound-absorbing effect.

The component on site construction method of the utility model abatvoix:

1) it stocks up: prefabricated profiled abatvoix is transported to erecting bed, according to requiring to be stacked；2) it transports: passing through Required specification is transported to by track flat car or other tools makes a reservation for place of mating formation；3) it basis cleaning: cleans up and takes root The basis of installation, no surface dust, no greasy dirt；4) mat formation: setting position of mating formation, abatvoix is laid on obstetric table i.e. with specific purpose tool Installation is completed, the direction of wedge 2 and the direction of track are consistent；5) examine: the abatvoix laid should be securely steady, and position meets Specification of technical file.

According to Railway Design, as shown in figure 3, the pit is formed by adjacent positive stop lug boss 4；As shown in figure 4, described Ladder-type sleepers pedestal is by the recessed formation in basis between two rails.For make abatvoix installation it is more stable, the bottom of the pedestal with It is equipped with rubber pad 3 between the bottom of abatvoix, rubber pad 3 is equipped between the side of pedestal and the side of abatvoix.

There are three types of the utility model abatvoix dimensions: 896 × 530 × 175mm, 896 × 365 × 175mm, 896 × 440 × 175mm, when construction, need to mat formation region bound rubber gasket in abatvoix to meet the purpose of damping noise reduction, by authority Detection, wheel track noise 3dB-5dB can be effectively reduced in the utility model abatvoix sound-absorption coefficient >=0.8.

The utility model abatvoix is applicable to the track of ladder-type sleepers or longitudinal sleeper.

Two kinds of trapezoidal and longitudinal sleepers are to have one in itself in terms of the vibration and noise reducing and in construction early period and later period maintenance Fixed optimization.

Concrete longitudinal sleeper is that longitudinal direction is laid under rail, to fixed rail, bears train and passes through rail transmitting Load and be distributed to the bar shaped concrete component of railway roadbed.To keep gauge, lateral connection component need to be set.Vertical pillow is rail Continuous bearing is provided, composite beam can be formed with rail.

Theoretical analysis shows that by the operating condition of be greatly improved rail and railway roadbed.It is that promising one kind is novel Sub-rail foundation structural shape.

Advantage: reducing wheel-rail impact power, and rail system global optimization reduces system maintenance amount；Playing vibration and noise reducing effect Fruit improves comfort by bus simultaneously；It constructs and conserves and is easy to maintain.

Ladder-type sleepers are equidistant between the sleeper beam of left and right to add crossbeam, the shapes of similar ladder under the form of longitudinal sleeper.

Ladder-type sleepers compensate for many defects of traditional transverse sleeper.

Ladder-type sleepers can provide continued support for track.

Advantage: 1, light-weight, save material: compared with concrete slab sleeper railway roadbed, every linear meter(lin.m.) saves concrete 52.6%, saves steel Muscle 69.4%, weight loss 68.7% can save concrete 34.5%, amount of reinforcement section compared with hollow type integral rails board for pillow railway roadbed About 72.9%, weight loss 22.3%.2, damping noise reduction: rail system uses packing and supports, and the duration is greatly shortened. Its shockproof noise control effect is especially realized in urban track traffic.

3, conducive to accelerating construction progress: ladder-type sleepers can efficiently guarantee precision and quality as precast construction, reduce construction Field cast-in-place concrete affairs, so as to shorten the duration.

4, durability is good, easy to maintain: having the characteristics that minimum maintenance capacity, recoverable high-quality in no slag track.

Poly- ammonia plastics used in it can be used 50 years, even if needing replacing, ladder-type sleepers are jacked up 25 millimeters or so Facilitate completion.If big deformation occurs in track component, only need to be inserted into height trimmer under trapezoidal track can be up to standard.

Claims (6)

1. a kind of noise reduction system of rail traffic, it is characterised in that: including the pedestal being located between ladder-type sleepers, be equipped with and inhale in pedestal Soundboard, the abatvoix include main body and several wedges for being set to body top face and being distributed along longitudinal direction, and the abatvoix includes pottery Grain aggregate, the second haydite that the haydite aggregate includes the first haydite that partial size is 1-5mm and partial size is 5-10mm, the first haydite It is combined with the second haydite by cement gel.

2. a kind of noise reduction system of rail traffic according to claim 1, it is characterised in that: abatvoix with a thickness of 175mm。

3. a kind of noise reduction system of rail traffic according to claim 1, it is characterised in that: the corner of abatvoix is in arc Shape.

4. a kind of noise reduction system of rail traffic according to claim 1, it is characterised in that: ladder-type sleepers pedestal is by adjacent Positive stop lug boss is formed.

5. a kind of noise reduction system of rail traffic according to claim 1, it is characterised in that: ladder-type sleepers pedestal is by two iron The recessed formation of pedestal between rail.

6. a kind of noise reduction system of rail traffic according to claim 1, it is characterised in that: ladder-type sleepers pedestal and sound-absorbing It is equipped with rubber pad between the bottom of plate, rubber pad is equipped between the side of pedestal and the side of abatvoix.