CN208279520U - A kind of ballast bed of track abatvoix - Google Patents

Abstract

A kind of ballast bed of track abatvoix, including main body and several wedges for being set to body top face and be distributed along longitudinal direction, the abatvoix includes haydite 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 and the second haydite pass through cement cementitious combination.Abatvoix has the characteristics that install and disassembly mode simplicity, drainability are strong.Aggregate includes being made based on the inorganic material such as a variety of high-strength hard haydites, cement by being gelled to combine, and product has many advantages, such as environment-protecting and non-poisonous, radiation hardness, high temperature resistant, and insulation is prevented fires.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 ballast bed of track abatvoix

Technical field

The utility model relates to Transit Equipment noise reduction technology, especially a kind of ballast bed of track abatvoix.

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 ballast bed of track abatvoix, noise reduction effect is more preferable.

In order to solve the above technical problems, the technical solution of the utility model is: a kind of ballast bed of track abatvoix, including main body With several wedges for being set to body top face and be distributed along longitudinal direction, the abatvoix includes haydite aggregate, and the haydite aggregate includes The second haydite that the first haydite and partial size that partial size is 1-5mm are 5-10mm, the first haydite and the second haydite pass through cement cementitious In conjunction with.

The top surface of the utility model abatvoix sets indent and convex wedge, using the principle of sound wave 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；Inside is not with Porous sound absorbing plate is made in haydite with particle size, and product has the structure of the continuous hole of honeycomb, while generating to sound wave Wideband response ensure that the high intensity and durability of its sound-absorbing effect and product；There is good permeable effect, Neng Goushun simultaneously The internal microcellular structure of benefit discharge ponding cooperation haydite itself 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 abatvoix is honeycomb structure.

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 sound wave 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 abatvoix is laid with.

Fig. 4 is the utility model abatvoix preparation flow figure.

Fig. 5 is abatvoix sound-absorption coefficient curve graph.

Fig. 6 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, the noise reduction system for planting rail traffic, including the abatvoix being located between two rails, abatvoix edge Orbital direction is laid with.The abatvoix is honeycomb structure, internal micro-fine pore structure.If the abatvoix include main body 1 and The dry wedge 2 for being set to 1 top surface of main body and being distributed along longitudinal direction, main body and wedge 2 are integrated compression moulding, and the height of wedge 2 is 4cm.Entire abatvoix with a thickness of 175mm, research has shown that, the sound-absorbing effect and material utilization amount of the abatvoix of 175mm thickness It is more reasonable, that is, reach sound-absorbing 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, 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 figure 5, 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--1000Kg/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: required specification is transported to by predetermined place of mating formation by track flat car or other tools；

3) basis for taking root installation, no surface dust, no greasy dirt basis cleaning: are cleaned up；

4) mat formation: setting position of mating formation, abatvoix is laid on obstetric table with specific purpose tool and completes to install, wedge 2 Direction is consistent with the direction of track；

5) examine: the abatvoix laid should be securely steady, and position meets specification of technical file.

Ladder-type sleepers pedestal is equipped between two rails, the abatvoix is located in ladder-type sleepers pedestal；The pedestal For in the recessed formation of road bed surface, or on the basis of setting boss formed.

To keep abatvoix installation more stable, rubber pad 3, pedestal are equipped between the bottom of the pedestal and the bottom of abatvoix Side and abatvoix side between be equipped with rubber pad 3.

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 energy >=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 It is to have certain optimization in itself in terms of the vibration and noise reducing and in construction early period and later period maintenance.

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 work item of be greatly improved rail and railway roadbed Part.It is a kind of promising New Track Substructure Used in Railway structural shape.Advantage: reducing wheel-rail impact power, and rail system is integrally excellent Change, reduces system maintenance amount；Comfort by bus is improved simultaneously playing effect of vibration and noise reduction；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 (5)

1. a kind of ballast bed of track abatvoix, it is characterised in that: several be distributed including main body and set on body top face and along longitudinal direction Wedge, the abatvoix include haydite aggregate, and the haydite aggregate includes the first haydite that partial size is 1-5mm and partial size is 5- The second haydite of 10mm, the first haydite and the second haydite pass through cement cementitious combination.

2. a kind of ballast bed of track abatvoix according to claim 1, it is characterised in that: the first haydite accounting weight is 60%, the Two haydite accounting weights are 30%.

3. a kind of ballast bed of track abatvoix according to claim 1, it is characterised in that: abatvoix with a thickness of 175mm.

4. a kind of ballast bed of track abatvoix according to claim 1, it is characterised in that: the corner of abatvoix is arc-shaped.

5. a kind of ballast bed of track abatvoix according to claim 1, it is characterised in that: the abatvoix is honeycomb knot Structure.