CN106186869A - Subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part preparation method - Google Patents
Subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part preparation method Download PDFInfo
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- CN106186869A CN106186869A CN201610547187.6A CN201610547187A CN106186869A CN 106186869 A CN106186869 A CN 106186869A CN 201610547187 A CN201610547187 A CN 201610547187A CN 106186869 A CN106186869 A CN 106186869A
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- concrete
- lightweight
- subway
- vibration damping
- eps granule
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
-
- 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
-
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
- C04B2111/2046—Shock-absorbing materials
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses the method for preparing fabricated member of a kind of subway vibration damping and vibration isolation railway roadbed lightweight concrete, lightweight concrete material composition includes EPS granule light material and stone, sand, cement and the lightweight concrete of some additives mix according to a certain percentage.The present invention in lightweight concrete forming process according to the different volumes ratio of concrete and EPS granule, adding a certain proportion of high-performance poly hydroxy acid water reducer and the intensity of adhesion agent guarantee lightweight precast concrete part and quality, this lightweight precast concrete part can improve the efficiency of construction of subgrade of metro and shorten the time of subgrade of metro maintenance.Blending method according to the present invention can obtain the lightweight precast concrete part needed for the elastic lightweight railway roadbed of subway mixing of a kind of vibration damping and vibration isolation, it is achieved vibration damping and vibration isolation.
Description
Technical field
The present invention relates to is the preparation method of a kind of subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part.
Background technology
Quickening, operation the continuing to increase of mileage along with China's subway construction speed, it is ensured that safety of subway operation, is one
The people's livelihood engineering that item is important, is also the strategic engineering of urban development green economy, is related to everyone safety.True
On, the city underground operation such as Shanghai and Nanjing occurs in that many potential safety hazards and harm, as operation cumulative settling, difference are sunk
Stopping transport after fall severe overweight and overhaul, subway train vibration makes liner structure appearance infiltration leakage mud endanger aggravation, periphery even occurs
The soil body and lining cutting such as are come to nothing at the problem, and serious threat to urban track traffic operation security, this is necessary face in urban rail transit construction
The challenge faced.It addition, it is also new complaint problem that subway train vibration disturbs residents, the vibration that Subway Train Operation in Existed Subway causes is by surrounding
Stratum is outwards propagated, and induces further the secondary vibration of building, to the structural safety of building and the work of resident and day
Often life all creates considerable degree of impact.
Occurring that these problems have its cause specific, it is to be determined by the shallow overburden subway feature of China.China's subway
Buried depth, mostly at about 15m, belongs to shallow embedding subway, the vibration effect subway subjective reflection produced when shallow embedding subway train runs
Work and life, simultaneously because it is soft soil horizon that shallow surface is mostly the 4th, subway train vibration long term, cause subway
The accumulated deformation severe overweight of periphery soft layer, has had influence on the safe operation of subway, has even produced harm, such as Shanghai Underground
The sedimentation of Line 1 cumulative maximum is close to 30cm, and annual maximum settlement difference reaches 3cm, the safe operation of serious threat subway, now
Can only speed limit operation, reduce the efficiency of operation of subway.Between stand in Sankt Peterburg subway Line 1 " forest " and " brave square " stand
Running tunnel pass through Neva ancient stream channel, after construction period and 1975 put into effect, there occurs a series of accident, later stage
Tunnel lining structure seepage, and a large amount of Sand, cause surface subsidence, tunnel deformation, structure heavy damage, and the most finally 1995
Year terminates train operation.
In recent years, China's subway transport system fast development, after Beijing, Shanghai, Guangzhou, Line of Nanjing Subway are opened, have again
Nearly 40 cities start or plan to build subway or light rail.All run through city commercial center due to city underground and intensive resident is little
District, the impact producing Adjacent Buildings living environment along the line can not be ignored.Subway generally uses solid concrete roabed structure, for increasing
The elasticity of track, rail fastening uses double elastic insert design, is i.e. all provided with quiet between rail and sleeper under fastener iron chair
The rubber mat plate that stiffness coefficient is less.
Although at present subway vibration reducing measure is achieved with certain effect, but long-term periodic vibration causes ground under subway
Accumulation deformation constantly increases, and has threatened the safe operation of subway, and has considerably increased operation maintenance cost.
In prior art, usual railway roadbed uses the concrete cast of C35, belongs to rigidity railway roadbed, to train vibration substantially
There is no any attenuation.Subway engineering does not the most use any vibration reducing measure at the basic railway roadbed of common interval section, simply exists
Hospital, the region, position such as the Factory Building of damping requirements, office is had to use vibration damping facility, such as floating slab railway roadbed, elastic short rail
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 that reached, shake
Dynamic decay 6-10dB, service life is limited, expensive.
Summary of the invention
Technical problem: in order to overcome the deficiencies in the prior art, the present invention provides a kind of subway vibration damping and vibration isolation railway roadbed
The preparation method of lightweight precast concrete part, the subway mixing light railway roadbed of this vibration damping and vibration isolation has obvious vibration damping and vibration isolation effect
Really.
Technical scheme: for achieving the above object, a kind of subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part of the present invention
Preparation method, the technical scheme of employing comprises the following steps:
1). require to determine concrete and EPS granule in lightweight concrete layer according to the design of subway vibration damping and vibration isolation along the line
Volume ratio carries out mix；
2). according to step 1) expanded polystyrene (EPS) (EPS) granule carries out volume metering and concrete by the volume ratio that determines
Associated materials is weighed respectively, it is contemplated that EPS granule is relatively lighter, and first carrying out the First Astronautic Research Institute for Measurement and Test needs EPS volume to put into kneading storehouse, EPS granule
Metering uses effusion meter to control；Then by the different proportion of design, then water, cement, additive, sand, the weighing of building stones are carried out, and
Put into kneading storehouse respectively, and start mix；
3). lightweight concrete is because being added with EPS granule, and workability during mix is poor, for increasing its workability, needs to add
A certain proportion of high-performance poly hydroxy acid water reducer；
4). lightweight concrete uses mixing building to carry out mix, mixes and utilizes concrete pump to be transported to prefabricated workshop to carry out
Prefabricated, requirement simultaneously is prepared sample and is carried out ruggedness test test；
6). the ratio of reinforcement of the prefabricated component of lightweight concrete is 0.8-0.9%, and main consideration eliminates stray electrical current, prefabricated component
Using vibration table vibratory compaction molding, surface light requirement is sliding, it is to avoid little groove in various degree occur；Form removal in 24 hours after molding,
And carry out moisture-keeping maintaining 28 days.
Wherein:
Described step 1) in, concrete is 3: 1,4: 1 or 5: 1 with the mix volume ratio of EPS granule；The particle diameter of EPS granule
Being 1～3mm, density is 12～15kg/m3。
Described step 3) in, when the volume ratio of concrete and EPS granule is 3: 1, the weight of water reducer is cement weight
1.8-2.0%；When the volume ratio of concrete and EPS granule is 4: 1, the weight of water reducer is the 1.6-1.8% of cement weight, mixed
The 1.5-1.7% that weight is cement weight of water reducer when the volume ratio of solidifying soil and EPS granule is 5: 1；
Described step 3) in, water reducer is to add when lightweight concrete mix, but can not be simultaneously introduced with water.
Beneficial effect: the preparation method of a kind of subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part that the present invention provides,
With guarantee subway vibration damping and vibration isolation be combined railway roadbed needed for mixing light concrete be able in engineering application, it is ensured that vibration damping and vibration isolation is multiple
Closing railway roadbed can implement, the energy that so can effectively intercept and reduce train vibration is delivered to the liner structure of subway, and
Passed to by liner structure in the foundation soil body of periphery, reduce the building to earth's surface and subway foundation produces extraneous vibration or initiation
Secondary vibration endangers.
Detailed description of the invention
The preparation method of a kind of subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part of the present invention comprises the following steps:
Example 1:
1). require to determine concrete and EPS granule in lightweight concrete layer according to the design of subway vibration damping and vibration isolation along the line
Volume ratio carries out mix, and mix volume ratio is 3: 1, and the particle diameter of EPS granule is 1mm, and density is 12kg/m3；
2). according to step 1) EPS granule is carried out volume metering for the volume ratio that determines and concrete associated materials claims respectively
Weight, it is contemplated that EPS granule is relatively lighter, first carrying out the First Astronautic Research Institute for Measurement and Test needs EPS volume to put into kneading storehouse, and EPS granule measurement uses effusion meter
Control；Then by the different proportion of design, then carry out water, cement, additive, sand, the weighing of building stones, and put into kneading respectively
Storehouse, and start mix；
3). lightweight concrete is because being added with EPS granule, and workability during mix is poor, for increasing its workability, needs to add
A certain proportion of high-performance poly hydroxy acid water reducer；Particularly as follows: the weight of water reducer when the volume ratio of concrete and EPS granule is 3: 1
Amount is the 1.8-2.0% of cement weight；
4). water reducer is to add when lightweight concrete mix, but can not be simultaneously introduced with water；
5). lightweight concrete uses mixing building to carry out mix, mixes and utilizes concrete pump to be transported to prefabricated workshop to carry out
Prefabricated, requirement simultaneously is prepared sample and is carried out ruggedness test test；
6). the ratio of reinforcement of the prefabricated component of lightweight concrete is 0.8%, and main consideration eliminates stray electrical current, and prefabricated component uses
Vibration table vibratory compaction molding, surface light requirement is sliding, it is to avoid little groove in various degree occur.After molding, form removal in 24 hours, goes forward side by side
Row moisture-keeping maintaining 28 days.
Example 2
1). require to determine concrete and EPS granule in lightweight concrete layer according to the design of subway vibration damping and vibration isolation along the line
Volume ratio carries out mix, and mix volume ratio is 4: 1；The particle diameter of EPS granule is 2mm, and density is 14kg/m3；
2). according to step 1) EPS granule is carried out volume metering for the volume ratio that determines and concrete associated materials claims respectively
Weight, it is contemplated that EPS granule is relatively lighter, first carrying out the First Astronautic Research Institute for Measurement and Test needs EPS volume to put into kneading storehouse, and EPS granule measurement uses effusion meter
Control；Then by the different proportion of design, then carry out water, cement, additive, sand, the weighing of building stones, and put into kneading respectively
Storehouse, and start mix；
3). lightweight concrete is because being added with EPS granule, and workability during mix is poor, for increasing its workability, needs to add
A certain proportion of high-performance poly hydroxy acid water reducer；Particularly as follows: the weight of water reducer when the volume ratio of concrete and EPS granule is 4: 1
Amount is the 1.6-1.8% of cement weight,
4). water reducer is to add when lightweight concrete mix, but can not be simultaneously introduced with water；
5). lightweight concrete uses mixing building to carry out mix, mixes and utilizes concrete pump to be transported to prefabricated workshop to carry out
Prefabricated, requirement simultaneously is prepared sample and is carried out ruggedness test test；
6). the ratio of reinforcement of the prefabricated component of lightweight concrete is 0.9%, and main consideration eliminates stray electrical current, and prefabricated component uses
Vibration table vibratory compaction molding, surface light requirement is sliding, it is to avoid little groove in various degree occur.After molding, form removal in 24 hours, goes forward side by side
Row moisture-keeping maintaining 28 days.
Example 3
1). require to determine concrete and EPS granule in lightweight concrete layer according to the design of subway vibration damping and vibration isolation along the line
Volume ratio carries out mix, and mix volume ratio is 5: 1；The particle diameter of EPS granule is 3mm, and density is 15kg/m3；
2). according to step 1) EPS granule is carried out volume metering for the volume ratio that determines and concrete associated materials claims respectively
Weight, it is contemplated that EPS granule is relatively lighter, first carrying out the First Astronautic Research Institute for Measurement and Test needs EPS volume to put into kneading storehouse, and EPS granule measurement uses effusion meter
Control；Then by the different proportion of design, then carry out water, cement, additive, sand, the weighing of building stones, and put into kneading respectively
Storehouse, and start mix；
3). lightweight concrete is because being added with EPS granule, and workability during mix is poor, for increasing its workability, needs to add
A certain proportion of high-performance poly hydroxy acid water reducer；Particularly as follows: the weight of water reducer when the volume ratio of concrete and EPS granule is 5: 1
Amount is the 1.5-1.7% of cement weight；
4). water reducer is to add when lightweight concrete mix, but can not be simultaneously introduced with water；
5). lightweight concrete uses mixing building to carry out mix, mixes and utilizes concrete pump to be transported to prefabricated workshop to carry out
Prefabricated, requirement simultaneously is prepared sample and is carried out ruggedness test test；
6). the ratio of reinforcement of the prefabricated component of lightweight concrete is 0.85%, and main consideration eliminates stray electrical current, and prefabricated component uses
Vibration table vibratory compaction molding, surface light requirement is sliding, it is to avoid little groove in various degree occur.After molding, form removal in 24 hours, goes forward side by side
Row moisture-keeping maintaining 28 days.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (4)
1. the preparation method of a subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part, it is characterised in that the method includes following
Step:
1). require to determine concrete and the volume of EPS granule in lightweight concrete layer according to the design of subway vibration damping and vibration isolation along the line
Ratio carries out mix；
2). according to step 1) EPS granule is carried out volume metering for the volume ratio that determines and concrete associated materials is weighed respectively, examine
Considering to EPS granule relatively lighter, first carrying out the First Astronautic Research Institute for Measurement and Test needs EPS volume to put into kneading storehouse, and EPS granule measurement uses effusion meter to control；
Then by the different proportion of design, then carry out water, cement, additive, sand, the weighing of building stones, and put into kneading storehouse respectively, and open
Beginning mix；
3). lightweight concrete is because being added with EPS granule, and workability during mix is poor, for increasing its workability, need to add certain
The high-performance poly hydroxy acid water reducer of ratio；
4). lightweight concrete uses mixing building to carry out mix, mixes and utilizes concrete pump to be transported to prefabricated workshop to carry out prefabricated,
Requirement simultaneously is prepared sample and is carried out ruggedness test test；
6). the ratio of reinforcement of the prefabricated component of lightweight concrete is 0.8-0.9%, and main consideration eliminates stray electrical current, and prefabricated component uses
Vibration table vibratory compaction molding, surface light requirement is sliding, it is to avoid little groove in various degree occur；After molding, form removal in 24 hours, goes forward side by side
Row moisture-keeping maintaining 28 days.
The preparation method of subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part the most according to claim 1, its feature exists
In described step 1) in, concrete is 3: 1,4: 1 or 5: 1 with the mix volume ratio of EPS granule；The particle diameter of EPS granule be 1～
3mm, density is 12～15kg/m3。
The preparation method of subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part the most according to claim 1, its feature exists
In described step 3) in, when the volume ratio of concrete and EPS granule is 3: 1, the weight of water reducer is the 1.8-of cement weight
2.0%；When the volume ratio of concrete and EPS granule is 4: 1, the weight of water reducer is the 1.6-1.8% of cement weight, concrete
The 1.5-1.7% that weight is cement weight of water reducer when being 5: 1 with the volume ratio of EPS granule.
The preparation method of subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part the most according to claim 1, its feature exists
In described step 3) in, water reducer is to add when lightweight concrete mix, but can not be simultaneously introduced with water.
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|---|---|---|---|
| CN201610547187.6A CN106186869A (en) | 2016-07-12 | 2016-07-12 | Subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part preparation method |
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| CN201610547187.6A CN106186869A (en) | 2016-07-12 | 2016-07-12 | Subway vibration damping and vibration isolation railway roadbed lightweight precast concrete part preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112110683A (en) * | 2020-08-24 | 2020-12-22 | 马得利 | Heat-insulating concrete |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981777A (en) * | 2014-05-29 | 2014-08-13 | 东南大学 | Metro shock absorption and vibration isolation elastic mixed light track bed |
| CN104594136A (en) * | 2014-12-17 | 2015-05-06 | 东南大学 | Subway shock reduction vibration isolation elastic mixed light track bed control process |
| CN104947721A (en) * | 2015-06-12 | 2015-09-30 | 广州市地下铁道总公司 | Subway car depot testing line composite vibration-isolation barrier |
| CN105036618A (en) * | 2015-06-29 | 2015-11-11 | 东南大学 | Preparation method of metro damping and vibration-isolating ballast bed lightweight concrete |
-
2016
- 2016-07-12 CN CN201610547187.6A patent/CN106186869A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981777A (en) * | 2014-05-29 | 2014-08-13 | 东南大学 | Metro shock absorption and vibration isolation elastic mixed light track bed |
| CN104594136A (en) * | 2014-12-17 | 2015-05-06 | 东南大学 | Subway shock reduction vibration isolation elastic mixed light track bed control process |
| CN104947721A (en) * | 2015-06-12 | 2015-09-30 | 广州市地下铁道总公司 | Subway car depot testing line composite vibration-isolation barrier |
| CN105036618A (en) * | 2015-06-29 | 2015-11-11 | 东南大学 | Preparation method of metro damping and vibration-isolating ballast bed lightweight concrete |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112110683A (en) * | 2020-08-24 | 2020-12-22 | 马得利 | Heat-insulating concrete |
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Application publication date: 20161207 |