CN206090182U - Elastic roadbed structure - Google Patents
Elastic roadbed structure Download PDFInfo
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- CN206090182U CN206090182U CN201621107250.6U CN201621107250U CN206090182U CN 206090182 U CN206090182 U CN 206090182U CN 201621107250 U CN201621107250 U CN 201621107250U CN 206090182 U CN206090182 U CN 206090182U
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Abstract
The utility model provides an elastic roadbed structure. Include: the no tiny fragments of stone, coal, etc. Concrete of concrete preparation, no tiny fragments of stone, coal, etc. Concrete includes inverted arch screed -coat and plane base face, place the sleeper on the base face of plane. The concrete includes rubber concrete or flexible concrete or adds other similar concrete that possesses performance material such as high damping ratio. The embodiment of the utility model provides a produce that characteristics such as's elastic roadbed structure has that environmental protection, low cost, construction are quick, durability and ductility are good, generally use suitable all fronts, requires other vibration reducing measure of location cooperation strict very much in the vibration simultaneously, not only can satisfy environmental vibration to require, reduce the investment of track damping, has guaranteed the track rigidity and the ride comfort of whole piece circuit in addition, avoids rail extraordinary wave mill is proposed.
Description
Technical field
This utility model is related to technical field of rail traffic, more particularly to a kind of elastic roadbed structure.
Background technology
With the fast development of track traffic, the influence of ambient vibration problem which brings is on the rise, and such as Beijing is a plurality of
Circuit is forced to adjust layout of roads due to vibration problem, and substantial amounts of vibration complaint problem is encountered by after newly-built line clear.Mesh
When the front country solves the problems, such as the ambient vibration that track traffic causes, ALT.1 fasteners, Vanguard fasteners, shearing-type are generally adopted
The fastener vibration reducing measure such as damper system fastener；The sleeper vibration reducing measures such as elastic short rail sleeper, elastic long sleeper；And rubber is floating
The railway roadbed vibration reducing measures such as plate track, steel spring floating slab track, trapezoidal track, all kinds of railway roadbed cushion blockings.However, merely by upper
There are the following problems to state track vibration-reducing measure：
(1) when the sensitivity in the face of vibration sensing target is higher (as subway line closely passes through Sensitive Buildings or new
Build subway and high scientific research institution etc. required to vibration along the line), solution vibration is difficult to by track vibration-reducing measure merely ask
Topic.From the point of view of application effect, although the newly-built circuit of Beijing urban mass transit employs a large amount of track vibration-reducing measures, single line
Upper vibration damping section length ratio highest up to 64%, but subjective reflection after line clear, scientific research institution with regard to ambient vibration throwing
Tell of common occurrence, main complaint content is track traffic vibration and noise disturbs residents, and conservation of historic buildings and precision instrument normally make
With being affected.
(2) track vibration-reducing measure is more to reduce orbit rigidity as means, and same circuit takes different track vibration-reducing measures to make
Obtain whole piece circuit rigidity uneven, and then deteriorate wheel rail relation, cause the generation and development of rail corrugation.This increases not only ring
Border level of vibration, the also safe operation for track traffic hide some dangers for.
Utility model content
Embodiment of the present utility model provides a kind of elastic roadbed structure, to reduce shadow of the track vibration to surrounding
Ring.
To achieve these goals, this utility model takes following technical scheme.
A kind of elastic roadbed structure, including：
Concrete for making without tiny fragments of stone, coal, etc. solid concrete roabed, it is described to include inverted arch screed-coat and planar base surface, institute without tiny fragments of stone, coal, etc. solid concrete roabed
State.
Further, threshold value of the damping ratio of the concrete higher than setting.
Further, the concrete includes rubber concrete or flexible concrete.
Further, the sleeper includes short sleeper, long sleeper or ladder-type sleepers.
Further, the elastic roadbed structure is prepared using cast-in-place or prefabrication system.
Further, when the elastic roadbed structure setting is in tunnel, the screed-coat of the tunnel inverted arch using with
Railway roadbed identical elastic concrete is laid.
The technical scheme provided by above-mentioned embodiment of the present utility model can be seen that the proposition of this utility model embodiment
The features such as elastic roadbed structure has environmental protection, low cost, quick construction, durability and good ductility, suitable all fronts commonly use,
Require that particularly severe location coordinates other vibration reducing measures in vibration simultaneously, ambient vibration requirement not only can be met, rail is reduced
Road vibration damping investment, and ensure that the orbit rigidity and ride comfort of whole piece circuit, it is to avoid the generation of rail extraordinary wave mill.
The additional aspect of this utility model and advantage will be set forth in part in the description, and these will be from explained below
In become obvious, or by it is of the present utility model practice recognize.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to wanting needed for embodiment description
The accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present utility model
Example, for those of ordinary skill in the art, without having to pay creative labor, can be with according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 gives the schematic diagram that the basal plane in elastic roadbed structure is placed above short sleeper；
Fig. 2 gives the schematic diagram that the basal plane in elastic roadbed structure is placed above long sleeper；
Fig. 3 gives the schematic diagram that the basal plane in elastic roadbed structure is placed above Trapezia pillow；
Fig. 4 gives the elastic roadbed structure of vibration isolation basal orbit of placement this utility model embodiment in shield tunnel
Whole structure schematic diagram；
In figure, 1- concrete elastic railway roadbeds；2- rail；The short sleepers of 3-；The long sleepers of 4-；5- ladder-type sleepers；6- tunnels.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein
Same or similar label represents same or similar element or the element with same or like function from start to finish.Lead to below
It is exemplary to cross the embodiment being described with reference to the drawings, and is only used for explaining this utility model, and can not be construed to this practicality
New restriction.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " " used herein, "
It is individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that used in description of the present utility model
Wording " including " refer to there is the feature, integer, step, operation, element and/or component, but it is not excluded that exist or
Add one or more other features, integer, step, operation, element, component and/or their group.It should be understood that working as us
Element is claimed to be " connected " or during " coupled " to another element, it can be directly connected or coupled to other elements, or can also
There is intermediary element.Additionally, " connection " used herein or " coupling " can include wireless connection or couple.It is used herein to arrange
Diction "and/or" includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined all terms used herein (include technology art
Language and scientific terminology) with this utility model art in those of ordinary skill general understanding identical meaning.Also
It should be understood that those terms defined in such as general dictionary are should be understood that with the context with prior art
The consistent meaning of meaning, and unless defined as here, will not be explained with idealization or excessively formal implication.
For ease of the understanding to this utility model embodiment, below in conjunction with accompanying drawing do by taking several specific embodiments as an example into
The explanation of one step, and each embodiment does not constitute the restriction to this utility model embodiment.
In order to solve the above problems, the research and development of novel damping technology are imperative.According to track traffic vibration absorbing theory system,
All measures for reducing sensitive target sensitivity belong to the category of comprehensive vibration damping.In addition to system stiffness method is reduced, can also lead to
Crossing the methods such as increase mass of vibration, dissipation vibrational energy carries out vibration damping process.
In the rubber concrete material that airfield runway, highway road face use, it is a kind of semirigid concrete material,
Performance is between conventional cement concrete and bituminous concrete.As rubber mainly passes through physical mechanicses improved effect concrete
Internal structure, changes the various materials chemical property of itself in concrete, thus will not destroy the durability of concrete.Material
The damping of material be weigh material damping property itself leading indicator, damping it is more big, show that material vibration absorption ability is stronger.Rubber
Concrete relative to common concrete material have higher damping ratio, more preferable impact resistance and ductility, elastic modelling quantity and
Fundamental frequency is reduced with the increase of rubber volume.When rubber powder volume is between 0.5%～2.5%, compared with normal concrete,
Damping ratio can improve 50%～60%；After rubber powder volume is more than 2.5%, damping ratio increases with rubber powder volume and quickly increases
Greatly, damping ratio improves about 1.3～2.3 times；When rubber powder volume is 4.5% or so, damping ratio, elastic modelling quantity can be obtained and resisted
The higher elastic concrete of Compressive Strength.Therefore rubber concrete can be used for enough vibration and noise reducings.
Additionally, rubber concrete have preferable fire resistance, absorbing, impact property, anti-burst characteristics, it is heat-insulated, every
Sound performance etc., has obtained substantial amounts of application in terms of engineering field.First rubber aggregate coagulation that can be used in the world
Soil structure is the 2 months 1999 one section of Rubber Concrete footpath built in the vertical campus of State of Arizona, US, with
First waste tire rubber modified concrete road surface road segment segment in the world has been built 2003 again in the state afterwards, and multiple elasticity are mixed
Solidifying soil testing site section.The world is built in November, 2005 in highway Hebei, Qingdao to Yinchuan Shijiazhuang entrance in the country
Upper first piece freeway toll station and the service area road surface by Rubber Concrete making.In August, 2006, Tianjin Wuqing
Area Wu Xiang roads two one hundred houses east mouth bridge, using Rubber Concrete as bridge deck pavement.At present, rubber concrete is largely used to
Build high-grade highway, level crossing paving etc.；And (strength grade meets or exceeds C60 to mix the high-strength concrete of rubber powder
Concrete), have been applied in important military architecture, nuclear industry building, anti-attack of terrorism building, mechanical system pedestal, railway
And subway cushion, barricade and heat-and sound-insulating performance is had in the body of wall of particular/special requirement.
Therefore, it can further inquire into its application prospect in railway traffic engineering field.And rubber can utilize old wheel
The scrap rubbers such as tire are processed, and realize recycling and pollution-free digestion process for waste old material, with great environmental protection
Meaning.
Flexible concrete is that changing for long fibre polypropylene, steel or glass fibre is mixed in concrete using special new method
Property cement concrete material.Relative to portland cement concrete, flexible concrete is a kind of material for having intensity and flexibility concurrently.State
Inside and outside scholar takes a variety of methods to cement concrete modifying, to reduce its elastic modelling quantity, improves toughness, such as adopts fiber
Arrangement of reinforcement, high-molecular organic material, high performance lightweight aggregate, high molecular polymer etc..In highway industry, flexible concrete is used as paving
Material has put into substantial amounts of application, by its road-ability it is good, noise is little, deformation is adaptable and obtained widely should
With.In underground engineering spray-up support technology field, the good spray of the flexible concrete with certain tension, anti-bending strength of application flexibility
Material is applied, improves tension, anti-bending strength and the toughness of matrix, and also have larger residual strength after it there is cracking.In water
Work field, with the successive construction of large hydraulic engineering, using flexible concrete as impervious material, because which can ensure certain strong
There is under the premise of degree relatively low elastic modelling quantity and adapt to moderate finite deformation and do not ftracture, obtained considerable application.In terms of railway,
With high-speed overload, phase performance waterproof can be posted, subtracted as tunneling boring sub-rail foundation material with viscoelastic flexible concrete
Shake, noise reduction, adapt to subgrade deformation, easy to maintain and environmentally friendly callable advantage, existing related research abroad.
This utility model embodiment proposes a kind of new elastic roadbed structure, compares performance materials using possessing high-damping
Concrete for making without tiny fragments of stone, coal, etc. solid concrete roabed, the threshold value of the damping ratio of above-mentioned concrete higher than setting is exemplary, and the threshold value can be with
For：2%.
Wherein, exemplary, concrete can adopt rubber concrete or flexible concrete.
This utility model embodiment as a result of concrete elastic railway roadbed, increase the elasticity of ballast bed structure, damping and
Quality, according to vibration attenuation mechanism, when train vibration ripple is Jing after fastener is transferred to railway roadbed, the inertia of ballast bed structure can balance a part and shake
Energy, while mechanical energy can be converted into heat energy by the rubber grain or flexible material granule in ballast bed structure, so as to subtract
Few vibrational energy transmitted via ballast bed structure, reaches vibration damping purpose.Due to elastomeric material wide material sources, it is possible to use old tire
It is processed Deng scrap rubber, realizes recycling and pollution-free digestion process for waste old material, with great environmental protection meaning
Justice, therefore the elastic roadbed cost is relatively low and environmentally friendly.In this utility model, prefabricated energy-absorbing elastic roadbed structure has good subtracting
Shake effect.
The new elastic roadbed structure that this utility model embodiment is proposed is using increase mass of vibration, dissipation vibrational energy
Mode carry out vibration damping.The elastic roadbed structure completely generally can be adopted, and can preferably solve subway vibration damping with excellent wheel
The problem that rail relation coexists, it is to avoid or reduce rail extraordinary wave mill phenomenon.Further, it is also possible to the vibration effect of all fronts is reduced, from
And the vibration damping grade in sensitive location is reduced, the length ratio in the higher especially special vibration damping location of circuit will greatly reduce, pole
It is possible to special vibration damping length ratio be controlled in the range of 25% this rational proportion, so as to substantially reduce vibration damping investment.
This utility model embodiment propose elastic roadbed structural implementation be：
After tunnel structure construction is finished, screed-coat is applied using rubber or flexible concrete at tunnel inverted arch, its
Construction method is consistent with normal concrete construction method；
Hereafter prefabricated or cast-in-place two ways can be divided into according to construction method difference carries out concrete elastic railway roadbed construction.
For precast concrete elastic roadbed, its construction way is：Design according to rubber concrete/flexible concrete is matched somebody with somebody
Than carrying out elastic concrete configuration (must wherein ensure the uniformity of rubber grain or other additives in concrete)；Prefabricated
Field completes the preparation of road bed board, i.e. assembling reinforcement-formwork-fixed support block-castable rubber or flexible concrete-conserve-tear open
Mould；The works such as the shearing that prefabricated road bed board is transported to job site carries out laying between in place, each section of railway roadbed is hinged, frame rail
Make.
For cast-in-place concrete elastic roadbed, its construction way is：Place is prepared according to rubber concrete/soft in concrete
The design proportioning of property concrete carries out elastic concrete configuration and (must wherein ensure rubber grain or other additives in concrete
Uniformity), be transported to job site；The construction of road bed board is completed on construction ground, i.e. assembling reinforcement-formwork-fixation is supported
The work such as block-castable rubber or flexible concrete-maintenance-form removal-frame rail.
The elastic roadbed structure of this utility model embodiment adopts rubber or flexible concrete to make without tiny fragments of stone, coal, etc. solid concrete roabed,
This is with revolutionary innovative significance in field of track traffic.And in work progress, the screed-coat of tunnel inverted arch can also
Laid using rubber or flexible concrete, strengthened the globality of ballast bed structure and underlying structure.
Made without tiny fragments of stone, coal, etc. solid concrete roabed using rubber concrete, its preparation technology is almost identical with normal concrete, Jin Jin
The uniformity that rubber powder/granule is mixed is noted in preparation process.The elastic roadbed can be using cast-in-place or prefabricated two kinds of sides
Formula is prepared.
Those skilled in the art will be understood that above-mentioned rubber or the application type of flexible concrete are only for example, and other are existing
Concrete application type that is having or being likely to occur from now on is such as applicable to this utility model embodiment, should also be included in practical
Within novel protected scope, and here is incorporated herein by reference.
The elastic roadbed structure of this utility model embodiment can be fabricated to various planforms, such as, do camber bent
Pattern of the face base plus planar base surface, such that it is able to adapt to various ground patterns and various tunnel patterns.Above-mentioned elastic roadbed
The sleeper and fastener that different types can be placed above the basal plane of structure is used, and meets different vibration damping demands, and Fig. 1 is given
The schematic diagram of short sleeper is placed above in the basal plane of elastic roadbed structure, Fig. 2 gives on the basal plane of elastic roadbed structure
The schematic diagram of long sleeper is placed in face, and Fig. 3 gives the schematic diagram that the basal plane in elastic roadbed structure is placed above ladder-type sleepers.
Fig. 4 gives the elastic roadbed structure of vibration isolation basal orbit of placement this utility model embodiment in shield tunnel
Whole structure schematic diagram.This railway roadbed can be constructed using two methods of prefabricated or cast in situs.
In sum, the elastic roadbed structure that this utility model embodiment is proposed have environmental protection, low cost, construction it is quick,
The features such as durability and good ductility, suitable all fronts commonly use, while requiring that particularly severe location coordinates other in vibration
Vibration reducing measure, not only can meet ambient vibration requirement, reduce track vibration-reducing investment, and ensure that the track of whole piece circuit is firm
Degree and ride comfort, it is to avoid the generation of rail extraordinary wave mill.
One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow process is not necessarily implemented necessary to this utility model.
One of ordinary skill in the art will appreciate that：The part in device in embodiment can be according to embodiment description point
It is distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.On
The part for stating embodiment can merge into a part, it is also possible to be further split into multiple subassemblies.
The above, only this utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any those familiar with the art can be readily occurred in the technical scope that this utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (6)
1. a kind of elastic roadbed structure, it is characterised in that include：
Concrete for making without tiny fragments of stone, coal, etc. solid concrete roabed, it is described to include inverted arch screed-coat and planar base surface without tiny fragments of stone, coal, etc. solid concrete roabed, it is described flat
Sleeper is placed on the basal plane of face.
2. elastic roadbed structure according to claim 1, it is characterised in that the damping ratio of the concrete is higher than setting
Threshold value.
3. elastic roadbed structure according to claim 1, it is characterised in that the concrete include rubber concrete or
Flexible concrete.
4. elastic roadbed structure according to claim 1, it is characterised in that the sleeper include short sleeper, long sleeper or
Person's ladder-type sleepers.
5. elastic roadbed structure according to claim 1, it is characterised in that the elastic roadbed structure is using cast-in-place or pre-
Mode processed is prepared.
6. the elastic roadbed structure according to any one of claim 1 to 5, it is characterised in that：
When the elastic roadbed structure setting is in tunnel, the screed-coat of the tunnel inverted arch is using elastic with railway roadbed identical
Concrete is laid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621107250.6U CN206090182U (en) | 2016-10-09 | 2016-10-09 | Elastic roadbed structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621107250.6U CN206090182U (en) | 2016-10-09 | 2016-10-09 | Elastic roadbed structure |
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| CN206090182U true CN206090182U (en) | 2017-04-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283943A (en) * | 2016-10-09 | 2017-01-04 | 北京交通大学 | Elastic roadbed structure |
| CN108277700A (en) * | 2018-03-10 | 2018-07-13 | 青岛安平轨道工程技术咨询有限公司 | A kind of compound ballastless track system of rail traffic Superimposed |
-
2016
- 2016-10-09 CN CN201621107250.6U patent/CN206090182U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283943A (en) * | 2016-10-09 | 2017-01-04 | 北京交通大学 | Elastic roadbed structure |
| CN108277700A (en) * | 2018-03-10 | 2018-07-13 | 青岛安平轨道工程技术咨询有限公司 | A kind of compound ballastless track system of rail traffic Superimposed |
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