CN108467225B - A kind of trielement composite material subway vibration-damping ballast production method - Google Patents
A kind of trielement composite material subway vibration-damping ballast production method Download PDFInfo
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- CN108467225B CN108467225B CN201810207396.5A CN201810207396A CN108467225B CN 108467225 B CN108467225 B CN 108467225B CN 201810207396 A CN201810207396 A CN 201810207396A CN 108467225 B CN108467225 B CN 108467225B
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- Prior art keywords
- composite material
- trielement composite
- subway
- vibration
- production method
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
Abstract
The invention discloses a kind of trielement composite material subway vibration-damping ballast production methods, trielement composite material is formed using architecture engineering material, gained trielement composite material is a kind of periodic structure material, it has band gap properties, vibration damping is carried out using this band gap properties, trielement composite material railway roadbed can effectively reduce influence of the subway train vibration to surrounding enviroment, improve the quality of metro operation, improve the quality of life of nearby residents along subway.
Description
Technical field
The invention belongs to subway vibration-damping ballast field of material technology, and in particular to a kind of trielement composite material subway vibration damping
Railway roadbed production method.
Background technique
The history of China's subway construction is not grown, and is at present compared to us there are larger gap compared with western developed country
The stage that subway construction and operation are laid equal stress on, it is ensured that safety of subway operation is both important a people's livelihood engineering and urban development
The strategic engineering of green economy, is related to everyone safety.In fact, due to the dynamic transfer system of subway --- wheel
Rail system, so that subway train vibration disturbs residents as new complaint problem, the caused vibration of Subway Train Operation in Existed Subway is by peripherally
Layer is propagated outward, further induces the secondary vibration of building, the work of structure safety and resident to building and daily
Life all produces considerable degree of influence.
The reason of generating these problems, it is determined by the shallow overburden subway feature in China.The buried depth of China's subway is big
Mostly in 15m or so, belong to shallow embedding subway, the vibration that shallow embedding subway train generates when running influence subway subjective reflection work and
Life, simultaneously because it is soft soil horizon that shallow surface, which is mostly the 4th, subway train vibrates long term, causes subway periphery soft
The accumulated deformation of weak soil layer severely exceeds, and has influenced the safe operation of subway.If do not adopted an effective measure, vibration influences can
Harm can be brought, as the effect of Shanghai Metro Line 1 Subway Vibration causes periphery weak soil to generate cumulative maximum sedimentation close to 30cm, south
Capital subway Line 1, the cumulative settling of No. 2 lines are exceeded, have seriously threatened the safe operation of subway.Sankt Peterburg subway 1
Line " forest " stand and " brave square " stand between running tunnel pass through Neva ancient stream channel, construction period and 1975 put into
A series of accidents, later period tunnel lining structure leakage, and a large amount of Sands have occurred after operation, leads to surface subsidence, tunnel
Deformation, structure are seriously destroyed, and most nineteen ninety-five terminates train operation finally.
Since city underground runs through city commercial center and intensive residential area, vibration lives to Adjacent Buildings along the line
The influence that environment generates can not be ignored, and influence the normal life and work of resident.Subway generallys use solid concrete roabed knot
Structure, for the elasticity for increasing track, rail fastening is using double elastic insert designs, i.e., the fastener iron chair between rail and sleeper are used
Under be all provided with the lesser rubber mat plate of Static stiffness coefficient.Although current subway vibration reducing measure has obtained certain effect, long-term vibration
The dynamic accumulation for causing the ground under subway becomes deformation and constantly increases, and has threatened the safe operation of subway, and considerably increase fortune
Seek maintenance cost.
In the prior art, usual railway roadbed is poured using the concrete of C35, belongs to rigid railway roadbed, substantially to train vibration
There is no any attenuation.Subway engineering is all no using any vibration reducing measure in the basic railway roadbed of common interval section, only exists
The positions regions such as hospital, the workshop for having damping requirements, organ use vibration damping facility, such as floating slab railway roadbed, the short rail of elasticity
The measures such as pillow formula monolithic roadbed track, rubber mat plate carry out vibration damping, but these measures are difficult to the vibration damping and vibration isolation effect reached, vibration
Dynamic decaying 6-10 dB, service life is limited, expensive.
Subway train vibration is mainly propagated with specific frequency wave outward, as can finding the decaying material to these frequency waves
Material, so that it may realize vibration damping.According to structure of the subway form, this purpose can be reached by making an issue of on railway roadbed material.It is based on
The theory of solid-state physics such as uses a kind of periodic structure material, and utilizes periodic structure material band gap feature, so that it may reach
To the effect of vibration damping.Solid-state physics is research shows that the vibration damping and vibration isolation principle of periodic structure material is different from conventional vibration damping and vibration isolation
Technology.
Summary of the invention
Technical problem: the present invention does not have train vibration substantially to solve rigidity railway roadbed used by existing subway vibration damping
There is the technical issues of any attenuation, a kind of trielement composite material subway vibration-damping ballast production method, the tri compound are provided
Material has periodic structure feature, for the vibration damping of subway, is conducive to the quality for improving metro operation, in subway construction and fortune
There is wide popularization and application value in battalion's maintenance.
A kind of technical solution: trielement composite material subway vibration-damping ballast production method, comprising the following steps:
Step 1, substrate material of the partial size for the uniform stone of 1.0-3.0cm as trielement composite material is selected；
Step 2, the EPS particle that partial size is 1-3mm is poured into the water for being mixed with thickener and emulsifier and is mixed and stirred, water
The water of EPS particle and 30-40kg that dosage is every cube, the volume of thickener are the 1.0-1.5% of water weight, the volume of emulsifier
For the 2.0-2.5% of water weight, then evenly mix with the stone of step 1, wrap up EPS particle by stone, wrapping layer with a thickness of 8-
12mm；
Step 3, cement mortar is prepared, the compound material of the package stone of EPS particle made from step 2 and cement mortar is uniform
It mixes and stirs, wraps up cement mortar by EPS particle, the thickness of wrapping layer is in 10-20mm to get trielement composite material；
Step 4, by step 3 gained trielement composite material arrangement of reinforcement, subway vibration-damping ballast prefabricated component is made.
Further, thickener described in step 2 is thickener polyvinyl alcohol.
Further, emulsifier described in step 2 is emulsifier polyethenoxy ether.
Further, the intensity of step 3 gained trielement composite material is 35-40Mpa.
Further, to meet metro stray current control to the ratio of reinforcement of trielement composite material arrangement of reinforcement in step 4 to require.
Technical effect: trielement composite material subway vibration-damping ballast of the invention, it is by being followed successively by stone-from inside to outside
EPS particle-cement mortar wraps up a kind of composite material of periodic structure of composition layer by layer, and with the tri compound of this composition
Material is fabricated to subgrade of metro, the vibration damping and vibration isolation for subway.Subway train vibrates the vibration for causing surrounding building along subway
It is dynamic, interfere the normal life and work of resident.Vibration damping seeks to eliminate subway train vibration interference, improves life of urban resident matter
Amount and working efficiency improve the quality of metro operation, create harmonious green traffic, have very important social benefit and environment
Benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the trielement composite material of subway vibration-damping ballast in embodiment 1, wherein 1 is stone, 2 are
EPS particle wrapping layer, 3 be cement mortar.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
The binary composite subway vibration-damping ballast of invention, it is by being followed successively by stone-EPS particle-cement from inside to outside
Mortar wraps up a kind of trielement composite material of periodic structure of composition layer by layer, and makes of the trielement composite material of this composition
Vibration damping and vibration isolation at subgrade of metro, for subway.
Embodiment 1
Specific operation is as follows:
1) substrate material of the partial size for the uniform stone of 1.0-3.0cm as trielement composite material is selected, specific size depends on
In the lattice constant of trielement composite material.
According to vibration damping and vibration isolation requirement, lattice constant is typically in the range of between 30-55mm.
2) the EPS particle that partial size is 1-3mm is poured into the water for being mixed with thickener and emulsifier and is mixed and stirred, the dosage of water
It is mixed and stirred for every cube of EPS particle and the water of 30-40kg, polyvinyl alcohol thickeners volume is the 1.0-1.5% of water weight, is gathered
Oxypropylene ether emulsifier volume is the 2.0-2.5% of water weight, can make the mutual molding bonded of EPS particle, then the stone with step 1 in this way
Son evenly mixes, and wraps up EPS particle by stone, wrapping layer with a thickness of 8-12mm；
3) cement mortar is made, then the compound material of the stone of the package of EPS particle made of 2 is evenly mixed with cement slurry,
Make cement slurry packet in the outside of EPD stratum granulosum, is fabricated to trielement composite material in this way, as shown in Figure 1；Cement mortar wrapping layer
Thickness is 35-40MPa between 10-20mm, its intensity of such trielement composite material, forms the prefabricated component of subgrade of metro, prefabricated
The size of part requires to determine according to practical subway line.
4) during making the prefabricated component of trielement composite material subgrade of metro, arrangement of reinforcement is needed, the ratio of reinforcement needs contentedly
Iron stray electrical current control require, while when being poured prefabricated component on it surface at interval of the pre- apart from fixed in position of 60-80cm
Metal catching groove is buried, which is used for the fixed subway tie of subsequent installation.
Resulting trielement composite material subgrade of metro effectiveness in vibration suppression is in 12-15dB.
Claims (5)
1. a kind of trielement composite material subway vibration-damping ballast production method, it is characterised in that: the following steps are included:
Step 1, substrate material of the partial size for the uniform stone of 1.0-3.0cm as trielement composite material is selected；
Step 2, the EPS particle that partial size is 1-3mm is poured into the water for being mixed with thickener and emulsifier and is mixed and stirred, the dosage of water
For every cube of EPS particle and the water of 30-40kg, the volume of thickener is the 1.0-1.5% of water weight, and the volume of emulsifier is water
The 2.0-2.5% of weight, then evenly mixes with the stone of step 1, wraps up EPS particle by stone, wrapping layer with a thickness of 8-
12mm；
Step 3, cement mortar is prepared, the compound material of the package stone of EPS particle made from step 2 is uniformly mixed with cement mortar
With wrap up cement mortar by EPS particle, the thickness of wrapping layer is in 10-20mm to get trielement composite material；
Step 4, by step 3 gained trielement composite material arrangement of reinforcement, subway vibration-damping ballast prefabricated component is made.
2. trielement composite material subway vibration-damping ballast production method according to claim 1, it is characterised in that: in step 2
The thickener is thickener polyvinyl alcohol.
3. trielement composite material subway vibration-damping ballast production method according to claim 1, it is characterised in that: in step 2
The emulsifier is emulsifier polyethenoxy ether.
4. trielement composite material subway vibration-damping ballast production method according to claim 1, it is characterised in that: step 3 institute
The intensity for obtaining trielement composite material is 35-40Mpa.
5. trielement composite material subway vibration-damping ballast production method according to claim 1, it is characterised in that: in step 4
To meet metro stray current control to the ratio of reinforcement of trielement composite material arrangement of reinforcement to require.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810207396.5A CN108467225B (en) | 2018-03-14 | 2018-03-14 | A kind of trielement composite material subway vibration-damping ballast production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810207396.5A CN108467225B (en) | 2018-03-14 | 2018-03-14 | A kind of trielement composite material subway vibration-damping ballast production method |
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| Publication Number | Publication Date |
|---|---|
| CN108467225A CN108467225A (en) | 2018-08-31 |
| CN108467225B true CN108467225B (en) | 2019-08-06 |
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| CN110332267A (en) * | 2019-06-25 | 2019-10-15 | 东南大学 | A kind of adjustable multilayered cylindrical shell of density |
| CN110950563A (en) * | 2019-11-19 | 2020-04-03 | 东南大学 | Phononic crystal-like composite material, preparation method and application thereof |
| CN114481716A (en) * | 2022-01-28 | 2022-05-13 | 中铁二十局集团第四工程有限公司 | Subway bed and construction method thereof |
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| CN103981777B (en) * | 2014-05-29 | 2015-10-28 | 东南大学 | A kind of subway damping vibration-isolating elasticity mixing light railway roadbed |
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