CN106283943A - Elastic roadbed structure - Google Patents

Elastic roadbed structure Download PDF

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Publication number
CN106283943A
CN106283943A CN201610882014.XA CN201610882014A CN106283943A CN 106283943 A CN106283943 A CN 106283943A CN 201610882014 A CN201610882014 A CN 201610882014A CN 106283943 A CN106283943 A CN 106283943A
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CN
China
Prior art keywords
concrete
vibration
roadbed structure
elastic
elastic roadbed
Prior art date
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.)
Pending
Application number
CN201610882014.XA
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Chinese (zh)
Inventor
孙晓静
刘维宁
刘卫丰
马蒙
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Beijing Jiaotong University
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Beijing Jiaotong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Jiaotong University filed Critical Beijing Jiaotong University
Priority to CN201610882014.XA priority Critical patent/CN106283943A/en
Publication of CN106283943A publication Critical patent/CN106283943A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E01B19/003Means for reducing the development or propagation of noise

Abstract

Embodiments provide a kind of elastic roadbed structure.Including: the solid concrete roabed without the tiny fragments of stone, coal, etc. of concrete for making, described solid concrete roabed without the tiny fragments of stone, coal, etc. includes inverted arch screed-coat and planar base surface, and described planar base surface is placed sleeper.Described concrete includes rubber concrete or flexible concrete or adds other similar concrete possessing the performance materials such as high-damping ratio.The elastic roadbed structure that the embodiment of the present invention proposes have environmental protection, low cost, construction quickly, durability and the feature such as ductility is good, applicable all fronts commonly use, require that particularly severe location coordinates other vibration reducing measures in vibration simultaneously, it is possible not only to meet ambient vibration requirement, reduce track vibration-reducing investment, and ensure that orbit rigidity and the ride comfort of whole piece circuit, it is to avoid the generation of rail extraordinary wave mill.

Description

Elastic roadbed structure
Technical field
The present invention relates to technical field of rail traffic, particularly relate to a kind of elastic roadbed structure.
Background technology
Along with the fast development of track traffic, the influence of ambient vibration problem that it brings is on the rise, as Beijing is a plurality of Circuit is forced to adjust layout of roads due to vibration problem, is i.e. encountered by substantial amounts of vibration complaint problem after newly-built line clear.Mesh During the ambient vibration problem that front domestic solution track traffic causes, generally use ALT.1 fastener, Vanguard fastener, shearing-type The fastener vibration reducing measures such as damper system fastener;The sleeper vibration reducing measure 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.But, in simple dependence There are the following problems to state track vibration-reducing measure:
(1) when (closely passing through Sensitive Buildings or new such as subway line when the sensitivity of vibration sensing target is higher Build subway and the most vibration required high scientific research institution etc.), simple dependence track vibration-reducing measure is difficult to solve vibration and asks Topic.From the point of view of application effect, although the newly-built circuit of Beijing urban mass transit all have employed a large amount of track vibration-reducing measure, single line Upper vibration damping section length ratio is the highest has reached 64%, but subjective reflection after line clear, scientific research institution are about the throwing of ambient vibration Telling 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 many with reduction orbit rigidity as means, and same circuit takes different track vibration-reducing measure to make Obtain whole piece circuit rigidity uneven, and then deteriorate wheel rail relation, cause generation and the development of rail corrugation.This increases not only ring Border level of vibration, the also safe operation for track traffic hide some dangers for.
Summary of the invention
The embodiment provides a kind of elastic roadbed structure, to reduce the track vibration impact on surrounding.
To achieve these goals, this invention takes following technical scheme.
A kind of elastic roadbed structure, including:
The solid concrete roabed without the tiny fragments of stone, coal, etc. of concrete for making, described solid concrete roabed without the tiny fragments of stone, coal, etc. includes inverted arch screed-coat and planar base surface, institute State placement sleeper on planar base surface.
Further, the damping ratio of described concrete is higher than the threshold value set.
Further, described concrete includes rubber concrete or flexible concrete.
Further, described sleeper includes short sleeper, long sleeper or ladder-type sleepers.
Further, the employing of described elastic roadbed structure is cast-in-place or prefabrication system is prepared.
Further, when described elastic roadbed structure is arranged in tunnel, the screed-coat of described tunnel inverted arch use with The elastic concrete that railway roadbed is identical is laid.
The technical scheme that thered is provided by embodiments of the invention described above is it can be seen that the elastic roadbed that proposes of the embodiment of the present invention Structure have environmental protection, low cost, construction quickly, durability and the feature such as ductility is good, applicable all fronts commonly use, while shaking Move and require that particularly severe location coordinates other vibration reducing measures, be possible not only to meet ambient vibration requirement, reduce track vibration-reducing throwing Money, and ensure that orbit rigidity and the ride comfort of whole piece circuit, it is to avoid the generation of rail extraordinary wave mill.
Aspect and advantage that the present invention adds will part be given in the following description, and these will become from the following description Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for this From the point of view of the those of ordinary skill of field, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings Accompanying drawing.
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 entirety of the elastic roadbed structure of vibration isolation basal orbit placing the embodiment of the present invention in shield tunnel Effect schematic diagram;
In figure, 1-concrete elastic railway roadbed;2-rail;The short sleeper of 3-;The long sleeper of 4-;5-ladder-type sleepers;6-tunnel.
Detailed description of the invention
Embodiments of the present invention are described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative used herein " ", " Individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that use in the description of the present invention arranges Diction " including " refers to there is described feature, integer, step, operation, element and/or assembly, but it is not excluded that existence or adds Other features one or more, integer, step, operation, element, assembly and/or their group.It should be understood that when we claim unit Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or can also exist Intermediary element.Additionally, " connection " used herein or " coupling " can include wireless connections or couple.Wording used herein "and/or" includes one or more any cell listing item being associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (include technology art Language and scientific terminology) have with the those of ordinary skill in art of the present invention be commonly understood by identical meaning.Also should Being understood by, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art The meaning that justice is consistent, and unless defined as here, will not explain by idealization or the most formal implication.
For ease of the understanding to the embodiment of the present invention, do as a example by several specific embodiments further below in conjunction with accompanying drawing Explanation, and each embodiment is not intended that the restriction to the embodiment of the present invention.
In order to solve the problems referred to above, the research and development of novel damping technology are imperative.According to track traffic vibration absorbing theory system, All measures reducing sensitive target sensitivity belong to the category of comprehensive vibration damping.In addition to reducing system stiffness method, also can lead to The method such as increase mass of vibration, dissipation vibrational energy of crossing carries out vibration damping process.
At the rubber concrete material that airfield runway, face, highway road use, it is a kind of semirigid concrete material, Performance is between conventional cement concrete and bituminous concrete.Due to rubber mainly by physical mechanics improved effect concrete Internal structure, does not change the chemical property of various materials itself in concrete, because of the durability without destroying concrete.Material The damping of material is the leading indicator weighing the damping property of material own, damps the biggest, shows that material vibration absorption ability is the strongest.Rubber Concrete has higher damping ratio, more preferable impact resistance and ductility relative to common concrete material, elastic modelling quantity and Fundamental frequency reduces 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 about 4.5%, damping ratio, elastic modelling quantity can be obtained and resist The elastic concrete that Compressive Strength is the highest.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, heat insulation, every Sound performances etc., have obtained substantial amounts of application in terms of engineering field.First spendable rubber aggregate coagulation in the world Soil structure is to found, at State of Arizona, US, one section of Rubber Concrete footpath that campus is built in February, 1999, with After this state built Article 1 waste tire rubber modified concrete road surface road segment segment in the world 2003 again, and multiple elasticity is mixed Solidifying soil section, testing site.Domestic in November, 2005 in Qingdao to Shijiazhuang, highway Hebei, Yinchuan entrance, built the world Upper first piece by the freeway toll station of Rubber Concrete making and service area road surface.In August, 2006, Wuqing, Tianjin One hundred houses east, Wu Xiang road two, district mouth bridge, uses Rubber Concrete as bridge deck pavement.At present, rubber concrete is largely used to Build high-grade highway, paving, level crossing 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 inquire into its application prospect in railway traffic engineering field further.And rubber can utilize old wheel The scrap rubbers such as tire are processed, it is achieved recycling and pollution-free digestion process of waste old material, have great environmental protection Meaning.
Flexible concrete is to use special new method to mix changing of long fibre polypropylene, steel or glass fibre in concrete Property cement concrete material.Relative to portland cement concrete, flexible concrete is a kind of material having intensity and flexibility concurrently.State Inside and outside scholar takes a variety of method to cement concrete modifying, to reduce its elastic modelling quantity, improves toughness, as used fiber Arrangement of reinforcement, high-molecular organic material, high performance lightweight aggregate, high molecular polymer etc..In highway industry, flexible concrete is as paving Material has put into substantial amounts of application, good by its road-ability, noise is little, it is adaptable to deform and obtained widely should With.In underground engineering spray-up support technology field, what application flexibility was good has the flexible concrete spray of certain tension, anti-bending strength It is coated with material, improves the tension of matrix, anti-bending strength and toughness, and after ftractureing, also have bigger residual strength.At water Work field, along with the construction in succession of large hydraulic engineering, employing flexible concrete is as impervious material, because it can ensure certain strong Under degree premise, there is relatively low elastic modelling quantity and adapt to moderate finite deformation and do not ftracture, having obtained considerable application.In terms of railway, Along with high-speed overload, have viscoelastic flexible concrete be used as tunneling boring sub rail foundation material can post the phase play waterproof, subtract Shake, noise reduction, adaptation subgrade deformation, be easily maintained and the callable advantage of environmental protection, the research being correlated with.
The embodiment of the present invention proposes a kind of novel elastic roadbed structure, uses and possesses high-damping mixing than performance materials Solidifying soil makes without tiny fragments of stone, coal, etc. solid concrete roabed, and the damping ratio of above-mentioned concrete is higher than the threshold value set, and exemplary, this threshold value can be: 2%.
Wherein, exemplary, concrete can use rubber concrete or flexible concrete.
The embodiment of the present invention, owing to have employed concrete elastic railway roadbed, increases the elasticity of ballast bed structure, damping and quality, According to vibration attenuation mechanism, when train vibration ripple is after fastener is transferred to railway roadbed, and the inertia of ballast bed structure can balance a part of vibrational energy Amount, changes mechanical energy can be heat energy by the rubber grain in ballast bed structure or flexible material granule simultaneously, thus reduces warp The vibrational energy transmitted by ballast bed structure, reaches vibration damping purpose.Due to elastomeric material wide material sources, it is possible to use old tire etc. give up Rubber is processed, it is achieved recycling and pollution-free digestion process of waste old material, has great environment protection significance, because of This this elastic roadbed cost is relatively low and environmental protection.In the present invention, prefabricated energy-absorbing elastic roadbed structure has good effectiveness in vibration suppression.
The novel elastic roadbed structure that the embodiment of the present invention proposes utilizes and increases mass of vibration, the side of dissipation vibrational energy Formula carries out vibration damping.This elastic roadbed structure can be the most commonly used, can preferably solve subway vibration damping and close with excellent wheel track The problem that system coexists, it is to avoid or reduce rail extraordinary wave mill phenomenon.Further, it is also possible to reduce vibration effect completely, thus drop The vibration damping grade in low sensitive location, the length ratio in the higher the most special vibration damping location of circuit will greatly reduce, and pole has can Special vibration damping length ratio can be controlled in the range of 25% this rational proportion, thus be substantially reduced vibration damping investment.
The elastic roadbed structural implementation that the embodiment of the present invention proposes is:
After tunnel structure is constructed, rubber or flexible concrete is used to apply screed-coat 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 carry out concrete elastic railway roadbed construction according to construction method difference.
For precast concrete elastic roadbed, its construction way is: join according to the design of rubber concrete/flexible concrete Ratio carries out elastic concrete configuration (wherein must ensure rubber grain or the uniformity of 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-maintenance-tear open Mould;Prefabricated road bed board is transported to the works such as shear hinge connection, frame rail that job site carries out laying between in place, each section of railway roadbed Make.
For cast-in-place concrete elastic roadbed, its construction way is: prepare place according to rubber concrete/soft at concrete The design proportioning of property concrete carries out elastic concrete configuration and (wherein must ensure rubber grain or other additives in concrete Uniformity), be transported to job site;Complete the construction of road bed board, i.e. assembling reinforcement-formwork-fixing support on construction ground The work such as block-castable rubber or flexible concrete-maintenance-form removal-frame rail.
The elastic roadbed structure of the embodiment of the present invention uses rubber or flexible concrete to make without tiny fragments of stone, coal, etc. solid concrete roabed, this Field of track traffic is to have revolutionary innovative significance.And in work progress, the screed-coat of tunnel inverted arch can also use Rubber or flexible concrete are laid, and strengthen the globality of ballast bed structure and underlying structure.
Using rubber concrete to make without tiny fragments of stone, coal, etc. solid concrete roabed, its preparation technology is almost identical with normal concrete, Jin Jin Preparation process notes the uniformity that rubber powder/granule mixes.This elastic roadbed can use cast-in-place or prefabricated two kinds of sides Formula is prepared.
Those skilled in the art will be understood that the application type of above-mentioned rubber or flexible concrete is only for example, and other are existing Concrete application type that is that have or that be likely to occur from now on is such as applicable to the embodiment of the present invention, also should be included in present invention protection Within scope, and it is incorporated herein with way of reference at this.
The elastic roadbed structure of the embodiment of the present invention can be fabricated to various planform, such as, makes at the bottom of arc-shaped curved surface Seat is plus the pattern of planar base surface, such that it is able to adapt to various ground pattern and various tunnels pattern.Above-mentioned elastic roadbed structure Basal plane above can place the sleeper of different types and fastener uses, meet different vibration damping demands, Fig. 1 gives The basal plane of elastic roadbed structure is placed above the schematic diagram of short sleeper, and Fig. 2 gives to be put on the basal plane of elastic roadbed structure Putting the schematic diagram of long sleeper, Fig. 3 gives the schematic diagram that the basal plane in elastic roadbed structure is placed above ladder-type sleepers.
Fig. 4 gives the entirety of the elastic roadbed structure of vibration isolation basal orbit placing the embodiment of the present invention in shield tunnel Effect schematic diagram.This railway roadbed can use prefabricated or two kinds of methods of cast in situs to construct.
In sum, it is quick, durable that the elastic roadbed structure that the embodiment of the present invention proposes has environmental protection, low cost, construction Property and the feature such as ductility is good, applicable all fronts commonly use, and require that particularly severe location coordinates other vibration dampings in vibration simultaneously Measure, is possible not only to meet ambient vibration requirement, reduces track vibration-reducing investment, and ensure that whole piece circuit orbit rigidity 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 an embodiment, module in accompanying drawing or Flow process is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that: the parts in device in embodiment can describe according to embodiment and divide 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 parts stating embodiment can merge into parts, it is also possible to is further split into multiple subassembly.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, Any those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replacement, All should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims It is as the criterion.

Claims (6)

1. an elastic roadbed structure, it is characterised in that including:
The solid concrete roabed without the tiny fragments of stone, coal, etc. of concrete for making, described solid concrete roabed without the tiny fragments of stone, coal, etc. includes inverted arch screed-coat and planar base surface, described flat Sleeper is placed on the basal plane of face.
Elastic roadbed structure the most according to claim 1, it is characterised in that the damping ratio of described concrete is higher than setting Threshold value.
Elastic roadbed structure the most according to claim 1, it is characterised in that described concrete include rubber concrete or Flexible concrete.
Elastic roadbed structure the most according to claim 1, it is characterised in that described sleeper include short sleeper, long sleeper or Person's ladder-type sleepers.
Elastic roadbed structure the most according to claim 1, it is characterised in that described elastic roadbed structure uses cast-in-place or pre- Mode processed is prepared.
6. according to the elastic roadbed structure described in any one of claim 1 to 5, it is characterised in that:
When described elastic roadbed structure is arranged in tunnel, the screed-coat of described tunnel inverted arch uses the elasticity identical with railway roadbed Concrete is laid.
CN201610882014.XA 2016-10-09 2016-10-09 Elastic roadbed structure Pending CN106283943A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107100044A (en) * 2017-06-24 2017-08-29 华东交通大学 A kind of vibration damping fragment-free track slab
CN109112902A (en) * 2018-09-14 2019-01-01 同济大学 A kind of preformed rubber is concrete road bed
CN109594431A (en) * 2018-11-28 2019-04-09 同济大学 A kind of vibration damping sleeper to be consumed energy using periodic structure
CN109811598A (en) * 2019-01-11 2019-05-28 山东科技大学 The vibration oscillation damping method that one kind is generated for traffic (high-speed rail, subway etc.) load
CN110373960A (en) * 2019-07-24 2019-10-25 深圳防灾减灾技术研究院 Flexible railway roadbed vibration-proof structure
CN110700023A (en) * 2019-10-15 2020-01-17 中铁四局集团有限公司 Steel spring floating plate integral ballast bed construction method based on rail engineering
CN112851258A (en) * 2021-02-06 2021-05-28 山东交通职业学院 Layered vibration-damping ballastless track bed
CN110373960B (en) * 2019-07-24 2024-04-09 深圳防灾减灾技术研究院 Flexible ballast bed vibration damping structure

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107100044A (en) * 2017-06-24 2017-08-29 华东交通大学 A kind of vibration damping fragment-free track slab
CN109112902A (en) * 2018-09-14 2019-01-01 同济大学 A kind of preformed rubber is concrete road bed
CN109594431A (en) * 2018-11-28 2019-04-09 同济大学 A kind of vibration damping sleeper to be consumed energy using periodic structure
CN109594431B (en) * 2018-11-28 2020-06-02 同济大学 Vibration damping sleeper using periodic structure to dissipate energy
CN109811598A (en) * 2019-01-11 2019-05-28 山东科技大学 The vibration oscillation damping method that one kind is generated for traffic (high-speed rail, subway etc.) load
CN110373960A (en) * 2019-07-24 2019-10-25 深圳防灾减灾技术研究院 Flexible railway roadbed vibration-proof structure
CN110373960B (en) * 2019-07-24 2024-04-09 深圳防灾减灾技术研究院 Flexible ballast bed vibration damping structure
CN110700023A (en) * 2019-10-15 2020-01-17 中铁四局集团有限公司 Steel spring floating plate integral ballast bed construction method based on rail engineering
CN112851258A (en) * 2021-02-06 2021-05-28 山东交通职业学院 Layered vibration-damping ballastless track bed

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