CN106186870A - Subway vibration damping and vibration isolation lightweight concrete is combined railway roadbed manufacture method - Google Patents
Subway vibration damping and vibration isolation lightweight concrete is combined railway roadbed manufacture method Download PDFInfo
- Publication number
- CN106186870A CN106186870A CN201610549454.3A CN201610549454A CN106186870A CN 106186870 A CN106186870 A CN 106186870A CN 201610549454 A CN201610549454 A CN 201610549454A CN 106186870 A CN106186870 A CN 106186870A
- Authority
- CN
- China
- Prior art keywords
- lightweight concrete
- concrete
- railway roadbed
- subway
- vibration
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/005—Making of concrete parts of the track in situ
-
- 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
-
- 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 subway vibration damping and vibration isolation lightweight concrete and be combined railway roadbed manufacture method, lightweight concrete material composition includes EPS granule light material and stone, sand, cement and the lightweight concrete of some auxiliary additives mix according to a certain percentage, pour compound railway roadbed with this lightweight concrete, it is achieved subway vibration damping and vibration isolation and carry out the manufacture method being correlated with.With guarantee subway vibration damping and vibration isolation be combined railway roadbed needed for mixing light concrete be able in engineering application, ensure that vibration damping and vibration isolation is combined railway roadbed and can implement, the energy that so can effectively intercept and reduce train vibration is delivered to the liner structure of subway, and passed in the foundation soil body of periphery by liner structure, reduce the building on earth's surface and subway foundation produces extraneous vibration or causes the impact of secondary vibration.There is obvious vibration damping and vibration isolation effect.
Description
Technical field
The invention discloses a kind of subway vibration damping and vibration isolation lightweight concrete and be combined railway roadbed method for designing, lightweight concrete material
Composition includes the light of EPS granule light material and stone, sand, cement and some additives mix according to a certain percentage
Matter concrete, pours subway vibration damping and vibration isolation with this lightweight concrete and is combined railway roadbed, and carry out the design being correlated with.
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.
The buried depth of China's subway, mostly at about 15m, belongs to shallow embedding subway, the vibration produced when shallow embedding subway train runs
Affecting work and the life of subway subjective reflection, simultaneously because it is soft soil horizon that shallow surface is mostly the 4th, subway train shakes
Dynamic long term, causes the accumulated deformation severe overweight of subway periphery soft layer, has had influence on the safe operation of subway, even
Producing harm, if the sedimentation of Shanghai Metro Line 1 cumulative maximum is close to 30cm, annual maximum settlement difference reaches 3cm, serious threat
The safe operation of subway, now can only speed limit operation, reduce the efficiency of operation of subway.Sankt Peterburg subway Line 1 " forest "
Stand and " brave square " stand between running tunnel pass through Neva ancient stream channel, after construction period and 1975 put into effect
Give birth to a series of accident, later stage tunnel lining structure seepage, and a large amount of Sand, cause surface subsidence, tunnel deformation, structure
Heavy damage, nineteen ninety-five terminates train operation the most finally.
In recent years, China's subway transport system fast development, there are nearly 40 cities to start or plan to build subway or light rail.
City commercial center and intensive residential quarter is all run through, the shadow that Adjacent Buildings living environment along the line is produced due to city underground
Ring and can not be ignored.Subway generally uses solid concrete roabed structure, and for increasing the elasticity of track, rail fastening uses double elastic insert to set
Meter, is i.e. all provided with, under fastener iron chair, the rubber mat plate that Static stiffness coefficient is less between rail and sleeper.
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.
Existing subgrade of metro uses the concrete cast of C30-C35, belongs to rigidity railway roadbed, does not substantially have train vibration
There is any attenuation.Subway engineering does not the most use any vibration reducing measure at the basic railway roadbed of common interval section, simply doctor
Institute, 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 sleeper
The measures such as 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, vibration
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 method for designing of lightweight concrete, uses the lightweight concrete of expanded polystyrene (EPS) (EPS) granule, has obvious vibration damping and vibration isolation
Effect.
Technical scheme: a kind of subway vibration damping and vibration isolation railway roadbed lightweight concrete manufacture method of the present invention, is different from traditional
The design of normal concrete railway roadbed, different for damping requirements use different preparation program.
This manufacture method includes:
A. according to the proportioning of different damping requirements design lightweight concretes:
Vibration damping 5-10dB interval uses concrete, and volume ratio is lightweight concrete: EPS=0.85: 0.15；
Vibration damping 10-15dB interval uses concrete, and volume ratio is lightweight concrete: EPS=4: 1；
Vibration damping 15-20dB interval uses concrete: volume ratio is lightweight concrete: EPS=7: 3；
B. the intensity of lightweight concrete need to reach C30-C35, and its ratio of mud is not more than 0.31, for increasing lightweight concrete
Workability can add appropriate water reducer, concrete: water reducer mixed by the lightweight concrete of EPS volume ratio 7: 3 is cement weight
2%, concrete: 1.5% that water reducer is cement weight mixed by the lightweight concrete of EPS volume ratio 4: 1, concrete: EPS volume ratio
1% that water reducer is cement weight mixed by the lightweight concrete of 0.85: 0.15,；
EPS grain density 12-15kg/m3 that c, preparation lightweight concrete use, particle diameter 1-3mm；
D, lightweight concrete subgrade of metro pour and can use cast in situs, it is possible to make corresponding prefabricated component, lightweight coagulation
Soil uses the raw materials such as cement, sand, stone and water should meet the relevant of GB50204 " concrete structure engineering construction quality accident specification "
Regulation；
Laying reinforcing bar in e, lightweight concrete railway roadbed, reinforcing bar is laid and should be carried out in conjunction with anti-stray current corrosion requirement；
F, sampling observation: the lightweight concrete of every 50-100 side needs to prepare one group of three sample, carry out density, comprcssive strength
Test verification.
Described lightweight concrete should unify plantmix, as distant in transport, need to add retarder, delay lightweight coagulation
The presetting period of soil.
Should use pumping during described lightweight concrete cast in situs railway roadbed, uniform vibratory compaction, for preventing EPS granule from going out
Now float, appropriate adhesion agent should be filled.
Described lightweight concrete railway roadbed pour after form removal after 24 hours, then carry out moisture-keeping maintaining.
Described lightweight concrete subgrade of metro, the changeover portion between the railway roadbed of different damping requirements, use sloped transition,
The length of transition is not less than 15 meters.
Beneficial effect: a kind of subway vibration damping and vibration isolation lightweight concrete that the present invention provides is combined railway roadbed manufacture method, with really
Protect the mixing light concrete needed for subway vibration damping and vibration isolation is combined railway roadbed and be able in engineering application, it is ensured that vibration damping and vibration isolation is combined
Bed can be implemented, and the energy that so can effectively intercept and reduce train vibration is delivered to the liner structure of subway, and by serving as a contrast
Build in the foundation soil body that structure passes to periphery, reduce the building to earth's surface and subway foundation produces extraneous vibration or causes secondary
The impact of vibration.
Detailed description of the invention
Concrete operation is as follows:
1, subway vibration damping and vibration isolation railway roadbed uses lightweight concrete to replace common concrete, and its manufacture method includes:
A, according to damping requirements design lightweight concrete proportioning: vibration damping 5-10dB interval use concrete: EPS volume ratio
The lightweight concrete of 0.85: 0.15, vibration damping 10-15dB interval employing concrete: the lightweight concrete of EPS volume ratio 4: 1, vibration damping
15-20dB interval employing concrete: the lightweight concrete of EPS volume ratio 7: 3；
B, the intensity of lightweight concrete need to reach C30-C35, and its ratio of mud is not more than 0.31, for increasing lightweight concrete
Appropriate water reducer can be added, concrete: the lightweight concrete of EPS volume ratio 7: 3 mixes 2% that water reducer is cement weight, coagulation
Soil: 1.5% that water reducer is cement weight mixed by the lightweight concrete of EPS volume ratio 4: 1, concrete: EPS volume ratio 0.85: 0.15
Lightweight concrete mix that water reducer is cement weight 1%,；
EPS grain density 12-15kg/m that c, preparation lightweight concrete use3, particle diameter 1-3mm；
D, lightweight concrete subgrade of metro pour and can use cast in situs, it is possible to make corresponding prefabricated component, lightweight coagulation
Soil uses the raw materials such as cement, sand, stone and water should meet the relevant of GB50204 " concrete structure engineering construction quality accident specification "
Regulation；
Laying reinforcing bar in e, lightweight concrete railway roadbed, reinforcing bar is laid and should be carried out in conjunction with anti-stray current corrosion requirement；
F, sampling observation: the lightweight concrete of every 50-100 side needs to prepare a thin sample (three samples), carries out density, resistance to compression
The test verification of intensity.
2, lightweight concrete should unify plantmix, as distant in transport, need to add retarder, delay lightweight concrete
Presetting period.
3, should use pumping during lightweight concrete cast in situs railway roadbed, uniform vibratory compaction, for preventing in the appearance of EPS granule
Floating, appropriate adhesion agent should be filled.
4, form removal after 24 hours after lightweight concrete railway roadbed pours, then carry out moisture-keeping maintaining.
5, the changeover portion between the railway roadbed of different damping requirements, uses sloped transition, and the length of transition is not less than 15 meters.
Claims (5)
1. a subway vibration damping and vibration isolation lightweight concrete is combined railway roadbed manufacture method, it is characterised in that this manufacture method includes:
A. according to the proportioning of different damping requirements design lightweight concretes:
Vibration damping 5-10dB interval uses concrete, and volume ratio is lightweight concrete: EPS=0.85: 0.15；
Vibration damping 10-15dB interval uses concrete, and volume ratio is lightweight concrete: EPS=4: 1；
Vibration damping 15-20dB interval uses concrete: volume ratio is lightweight concrete: EPS=7: 3；
B. the intensity of lightweight concrete need to reach C30-C35, and its ratio of mud is not more than 0.31, for increase lightweight concrete and easy
Property can add appropriate water reducer, concrete: 2% that water reducer is cement weight mixed by the lightweight concrete of EPS volume ratio 7: 3, mixed
Solidifying soil: 1.5% that water reducer is cement weight mixed by the lightweight concrete of EPS volume ratio 4: 1, concrete: EPS volume ratio 0.85:
1% that water reducer is cement weight mixed by the lightweight concrete of 0.15,；
EPS grain density 12-15kg/m that c, preparation lightweight concrete use3, particle diameter 1-3mm；
D, lightweight concrete subgrade of metro pour and can use cast in situs, it is possible to make corresponding prefabricated component, and lightweight concrete is adopted
The relevant rule of GB50204 " concrete structure engineering construction quality accident specification " should be met with raw materials such as cement, sand, stone and water
Fixed；
Laying reinforcing bar in e, lightweight concrete railway roadbed, reinforcing bar is laid and should be carried out in conjunction with anti-stray current corrosion requirement；
F, sampling observation: the lightweight concrete of every 50-100 side needs to prepare one group of three sample, carries out the test of density, comprcssive strength
Inspection.
2. subway vibration damping and vibration isolation lightweight concrete as claimed in claim 1 is combined railway roadbed manufacture method, it is characterised in that described
Lightweight concrete should unify plantmix, as transport distant, retarder need to be added, when delaying the initial set of lightweight concrete
Between.
3. subway vibration damping and vibration isolation lightweight concrete as claimed in claim 1 is combined railway roadbed manufacture method, it is characterised in that described
Lightweight concrete cast in situs railway roadbed time should use pumping, uniform vibratory compaction, float for preventing EPS granule from occurring, should mix
Add appropriate adhesion agent.
4. subway vibration damping and vibration isolation lightweight concrete as claimed in claim 1 is combined railway roadbed manufacture method, it is characterised in that described
Lightweight concrete railway roadbed pour after form removal after 24 hours, then carry out moisture-keeping maintaining.
5. subway vibration damping and vibration isolation lightweight concrete as claimed in claim 1 is combined railway roadbed manufacture method, it is characterised in that described
Lightweight concrete subgrade of metro, the changeover portion between the railway roadbed of different damping requirements, use sloped transition, the length of transition is not
Less than 15 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549454.3A CN106186870A (en) | 2016-07-12 | 2016-07-12 | Subway vibration damping and vibration isolation lightweight concrete is combined railway roadbed manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549454.3A CN106186870A (en) | 2016-07-12 | 2016-07-12 | Subway vibration damping and vibration isolation lightweight concrete is combined railway roadbed manufacture method |
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| CN106186870A true CN106186870A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610549454.3A Pending CN106186870A (en) | 2016-07-12 | 2016-07-12 | Subway vibration damping and vibration isolation lightweight concrete is combined railway roadbed manufacture method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423167A (en) * | 2020-04-02 | 2020-07-17 | 石河子大学 | Concrete lining board and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383343A (en) * | 2011-08-17 | 2012-03-21 | 东南大学 | Damping vibration-isolating compound track bed for metro and construction method thereof |
| CN103967056A (en) * | 2014-04-21 | 2014-08-06 | 河海大学 | Junked tire vibration damping and isolating building foundation and construction method thereof |
| 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 |
| 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 CN201610549454.3A patent/CN106186870A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383343A (en) * | 2011-08-17 | 2012-03-21 | 东南大学 | Damping vibration-isolating compound track bed for metro and construction method thereof |
| CN103967056A (en) * | 2014-04-21 | 2014-08-06 | 河海大学 | Junked tire vibration damping and isolating building foundation and construction method thereof |
| 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 |
| 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 |
|---|---|---|---|---|
| CN111423167A (en) * | 2020-04-02 | 2020-07-17 | 石河子大学 | Concrete lining board and preparation method and application thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |