CN110172869A - The construction method of assembled ballastless track system and assembled ballastless track system - Google Patents
The construction method of assembled ballastless track system and assembled ballastless track system Download PDFInfo
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- CN110172869A CN110172869A CN201910465559.4A CN201910465559A CN110172869A CN 110172869 A CN110172869 A CN 110172869A CN 201910465559 A CN201910465559 A CN 201910465559A CN 110172869 A CN110172869 A CN 110172869A
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- precast
- track system
- ballastless track
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- assembled
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000000926 separation method Methods 0.000 claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 239000004567 concrete Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 7
- 238000009417 prefabrication Methods 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 6
- 239000004746 geotextile Substances 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 210000003205 muscle Anatomy 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 239000011513 prestressed concrete Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000012634 fragment Substances 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 4
- 239000011376 self-consolidating concrete Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The present invention provides the construction methods of a kind of assembled ballastless track system and assembled ballastless track system.Wherein, assembled ballastless track system includes: precast track plate, and the center of precast track plate has one or more limit holes；Precast base, precast base are located at the lower section of precast track plate；Prefabricated position limiting structure, precast base protrude into limit hole；Separation layer or support are provided with separation layer or support between precast track plate and precast base；Elastic buffer bed course is arranged in elastic buffer bed course between limit hole and prefabricated position limiting structure；Cast-in-site layer, cast-in-site layer are located at the lower section of precast base and in-site pouring molding.The present invention solves the problems, such as that it is poor to have the poor foundation deformation ability under line that adapts to, site operation low efficiency and track structure durability for rail system in the prior art.
Description
Technical field
The present invention relates to railway traffic engineering technical field, in particular to a kind of assembled ballastless track system and
The construction method of assembled ballastless track system.
Background technique
Urban rail transit in China track structure mainly uses short rest pad formula or the cast-in-place railway roadbed of long sleeper buried-type, Guo Tiezhu
It uses, the non-fragment orbits pattern such as III plate-type of I plate-type of CRTS, II plate-type of CRTS and CRTS.Wherein short rest pad formula, length
It is larger to rest the head on flush type, elastic supporting block formula, double-block type ballastless track poured in place concrete amount, there are construction speeds slowly, road
The deficiencies of bed cracks, labor intensity of workers is big；I plate-type of CRTS, II plate-type of CRTS mix in III plate-type non-fragment orbit of CRTS
Solidifying soil pedestal, cement emulsified asphalt mortar layer/self-compacting concrete site operation, the more influence construction efficiency of process, and cement
Emulsified asphalt slurry layer durability is poor, and cracking in various degree occurs in pedestal.That is, non-fragment orbit system in the prior art
System needs further to promote site operation efficiency and track structure durability.
In addition, often there is foundation deformation under line practice have shown that passing through after railroad embankment, the existing non-fragment orbit when deforming larger
Structure is difficult to adapt to, and disease occurs in Yi Yinfa non-fragment orbit.Once occurring that railway roadbed hurt difficulty of governance is big, maintenance cost is high.?
That is ballastless track system in the prior art needs further to promote the ability for adapting to foundation deformation under line.
It can be seen from the above, rail system in the prior art is poor in the presence of the foundation deformation ability under line that adapts to, site operation effect
Rate is low and the problem of track structure durability difference.
Summary of the invention
The main purpose of the present invention is to provide a kind of assembled ballastless track system and assembled ballastless track systems
Construction method, with solve rail system in the prior art exist adapt under line foundation deformation ability is poor, site operation low efficiency with
And the problem of track structure durability difference.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of assembled ballastless track system, packet
Include: precast track plate, the center of precast track plate have one or more limit holes；Precast base, precast base are located at prefabricated
The lower section of track plates；Prefabricated position limiting structure, prefabricated position limiting structure protrude into limit hole；Separation layer or support, precast track plate with
Separation layer or support are provided between precast base；Elasticity is arranged in elastic buffer bed course between limit hole and prefabricated position limiting structure
Cushion；Cast-in-site layer, cast-in-site layer are located at the lower section of precast base and in-site pouring molding.
Further, the hole section of limit hole is rounded, polygon or ellipse；And/or the hole of limit hole it is upper without leave and
Under be gradually reduced.
Further, prefabricated position limiting structure is integrally formed to being gradually reduced from top to bottom, and with precast base.
Further, reinforcing bar is set in precast base, and the part-structure of reinforcing bar be exposed to precast base lower section and with
Cast-in-site layer form, reinforcing bar are truss bars or door shape muscle.
Further, the thickness of precast base is more than or equal to 50mm.
Further, separation layer is geotextile layer or rubber layer, can be laid with when geotextile layer is as separation layer one layer or
Two layers.
Further, support is multiple, and is divided into two groups, and have multiple supports in every group, two groups of supports side by side and
Every setting, and the extending direction with multiple supports in group along assembled ballastless track system is successively spaced setting.
Further, precast track plate, prefabricated position limiting structure, precast base, separation layer, elastic buffer bed course are in portion, factory
Packing is matched or is all assembled integral；Or precast track plate, prefabricated position limiting structure, precast base, support, elastic buffer bed course exist
Factory's part assembly or all assembly are integral.
Further, high rail superelevation is set on cast-in-site layer.
Further, precast track plate is reinforced concrete track plate or prestressed concrete railway board.
Further, the length of precast track plate is 3 meters to 7 meters.
According to another aspect of the present invention, provide a kind of construction method of assembled ballastless track system, assembled without
Tiny fragments of stone, coal, etc. rail system is above-mentioned assembled ballastless track system, and construction method includes prefabrication step and cast-in-site step,
Wherein, prefabrication step includes: manufacture precast track plate, and limit hole is reserved on precast track plate；In precast track plate
Lower section be laid with separation layer or erection support；Elastic buffer bed course is set in limit hole；Manufacture precast base and prefabricated limit
Structure, so that precast base and prefabricated position limiting structure are connected to precast track plate and elastic buffer bed course and separation layer or support
It is formed together composite structure；Cast-in-site step includes: to place on cast on-site layer composite structure and make cast-in-site layer
Form.
Further, the step of manufacturing precast track plate:
S10: the two is simultaneously placed in railway plate die by production steel bar framework of track plate and presstressed reinforcing steel, and pore-forming is arranged
Device；
S11: tensioned prestressing bar and casting concrete；
S12: it is laid with separation layer；
S13: concrete curing is carried out.
Further, the step of elastic buffer bed course is set in limit hole:
S20: the perforating device in limit hole is removed；
S21: elastic buffer bed course is pasted around limit hole.
Further, the step of manufacturing precast base and prefabricated position limiting structure:
S30: production reinforcing bar；
S31: common framework of steel reinforcement is made, framework of steel reinforcement is placed on separation layer, and reinforcing bar is placed on separation layer
On；
S32: cushion block is set using the support as framework of steel reinforcement；
S33: casting concrete；
S34: concrete curing is carried out.
It applies the technical scheme of the present invention, the assembled ballastless track system in the application includes: precast track plate, prefabricated
Pedestal, prefabricated position limiting structure, separation layer or support, elastic buffer bed course and cast-in-site layer.The center of precast track plate has
There are one or more limit holes；Precast base is located at the lower section of precast track plate；Prefabricated position limiting structure protrudes into limit hole；It is prefabricated
Separation layer or support are provided between track plates and precast base；Elastic buffering pad is set between limit hole and prefabricated position limiting structure
Layer；Cast-in-site layer is located at the lower section of precast base and in-site pouring molding.
Above-mentioned assembled ballastless track system mainly uses two steps to complete assembling when being manufactured, and a step is
Prefabrication step, another step are cast-in-site steps, when can greatly reduce site operation workload and construction in this way
Between, improve the laying efficiency of assembled ballastless track system.And be prefabricated in the factory step when, it is prefabricated in advance by precast track plate
Pedestal, prefabricated position limiting structure, separation layer or support, elastic buffer bed course are assembled to together, be can be improved using precast construction assembling
Track structure durability reduces error and probability of failure in work progress, improves the construction matter of assembled ballastless track system
Amount, in addition support has height adjustment capability in assembled ballastless track system, to effectively solve prior art middle orbit system
There is adapting to poor foundation deformation ability under line, site operation low efficiency and track structure durability difference in system.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic longitudinal section of assembled ballastless track system in an alternative embodiment of the invention；
Fig. 2 shows the cross-sectional views of assembled ballastless track system in Fig. 1；
Fig. 3 shows the schematic longitudinal section of assembled ballastless track system in another alternative embodiment of the invention；
Fig. 4 shows the cross-sectional view of assembled ballastless track system in Fig. 3；
Fig. 5 shows the transversal of the precast track plate of assembled ballastless track system in an alternative embodiment of the invention
Face schematic diagram；
Fig. 6 shows the precast base of assembled ballastless track system and limit knot in an alternative embodiment of the invention
The cross-sectional view of structure.
Wherein, the above drawings include the following reference numerals:
10, precast track plate；11, limit hole；20, precast base；21, prefabricated position limiting structure；30, separation layer；31, elastic
Cushion；40, support；50, cast-in-site layer；60, reinforcing bar.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have and the application
The normally understood identical meanings of person of an ordinary skill in the technical field.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually needle
For direction shown in the drawings, or for component itself is on vertical, vertical or gravity direction；Equally
Ground for ease of understanding and describes, and " inside and outside " refers to the inside and outside of the profile relative to each component itself, but the above-mentioned noun of locality is not
For limiting the present invention.
In order to solve rail system in the prior art exist adapt under line foundation deformation ability is poor, site operation low efficiency with
And the problem of track structure durability difference, this application provides a kind of assembled ballastless track system and assembled non-fragment orbit systems
The construction method of system.
As shown in Figures 1 to 6, the assembled ballastless track system in the application includes: precast track plate 10, precast base
20, prefabricated position limiting structure 21, separation layer 30 or support 40, elastic buffer bed course 31 and cast-in-site layer 50.Precast track plate
10 center has one or more limit holes 11；Precast base 20 is located at the lower section of precast track plate 10；Prefabricated position limiting structure
21 protrude into limit hole 11；Separation layer 30 or support 40 are provided between precast track plate 10 and precast base 20；Limit hole 11
Elastic buffer bed course 31 is set between prefabricated position limiting structure 21；Cast-in-site layer 50 is located at the lower section of precast base 20 and scene
Form.
Above-mentioned assembled ballastless track system mainly uses two steps to complete assembling when being manufactured, and a step is
Prefabrication step, another step are cast-in-site steps, can greatly reduce the time of site operation in this way, improve assembly
The laying efficiency of formula ballastless track system.And be prefabricated in the factory step when, in advance by precast track plate 10, precast base 20, pre-
Position limiting structure 21, separation layer 30 or support 40 processed, elastic buffer bed course 31 are assembled to together, can be improved using precast construction assembling
Track structure durability reduces error and probability of failure in work progress, improves the construction matter of assembled ballastless track system
Amount, in addition support has height adjustment capability in assembled ballastless track system, to effectively solve prior art middle orbit system
There is adapting to poor foundation deformation ability under line, site operation low efficiency and track structure durability difference in system.
Optionally, cast-in-site layer 50 is cast-in-place self-compacting concrete layer or resin mortar perfusion layer.
It should be noted that open up limit hole 11 at the center of precast track plate 10, precast base 20 and prefabricated can be made
Position limiting structure 21 is reliably fixed with precast track plate 10, is prevented track plates floating and traversing, is increased track structure monolithic stability
Property.Also, due to being provided with separation layer 30 and elastic buffer bed course 31, it can coordinate, buffer precast track plate 10 and prefabricated bottom
Seat 20 and the deformation of prefabricated position limiting structure 21 and interaction, provide convenience for later period maintenance.And the step of constructing at the scene
In, it is only necessary to cast-in-site layer 50 is perfused, product after the completion of shop is assembled together with cast-in-site layer 50, from
And site operation efficiency can be effectively improved, while solving the problems, such as that rail system middle orbit structure durability is poor.
Also, elastic buffer bed course 31 is it is possible to prevente effectively from generate gap between limit hole 11 and prefabricated position limiting structure 21.
And then the bottom of precast track plate 10 is penetrated into after efficiently avoiding 11 near zone ponding of limit hole, while being also convenient for operation rank
Section maintenance.
It should be noted that the quantity of limit hole 11 can be multiple, multiple prolonging along precast track plate 10 of limit hole 11
Stretch the setting of direction interval.Multiple limit holes 11 are matched with multiple prefabricated position limiting structures 21, can be to assembled non-fragment orbit system
System plays better limit function, increases the stability of assembled ballastless track system in the process of running.Also need to illustrate
It is that the number of limit hole 11 is mainly designed according to the length of precast track plate 10.
In a specific embodiment, the number of limit hole 11 is two.
Optionally, the hole section of limit hole 11 is rounded, polygon or ellipse.It can be according to limit hole 11 and prefabricated limit
The actual use demand of bit architecture 21 and difficulty of processing determine.
Optionally, the aperture of limit hole 11 is gradually reduced from top to bottom.Limit hole 11 is arranged to aperture from top to bottom gradually
Reduced shape, the displacement that can effectively inhibit precast track plate 10 to float, and convenient for being demoulded when the production of precast track plate 10.
Optionally, prefabricated position limiting structure 21 is gradually reduced from top to bottom, and is integrally formed with precast base 20.In this way
Setting, can make the connection between prefabricated position limiting structure 21 and precast base 20 even closer, so as to guarantee entirely to assemble
The compactedness of formula ballastless track system structure and the reliability of limit.
As shown in fig. 6, reinforcing bar 60 is arranged in precast base 20, and the part-structure of reinforcing bar 60 is exposed to precast base 20
Lower section and with 50 form of cast-in-site layer, reinforcing bar 60 is truss bars or door shape muscle.It is arranged in this way, to assembled
When ballastless track system is assembled, by the part-structure of the part-structures of truss bars or door shape muscle by precast base 20 with
Cast-in-site layer 50 is attached, and truss bars or the exposed part of door shape muscle can extend into cast-in-site layer 50
It is interior.
Optionally, the thickness of precast base 20 is more than or equal to 50mm.It is arranged in this way, assembled can be guaranteed without tiny fragments of stone, coal, etc. rail
The structural strength of road system.Certainly, the specific thickness of precast base 20, needs according to actual service condition and lineament
To determine.
Optionally, separation layer 30 is geotextile layer or rubber layer, and one layer can be laid with when geotextile layer is as separation layer 30
Or two layers.The setting of separation layer 30 can make to separate between precast base 20 and precast track plate 10, to reduce temperature change
The influence of change, in addition, carrying out the maintenance of track structure after being also convenient for infrastructure sedimentation or arch.
Optionally, support 40 is multiple and be divided into two groups, and has multiple supports 40 in every group, two groups of supports 40 side by side and
Interval setting, and the extending direction with multiple supports 40 in group along assembled ballastless track system is successively spaced setting.Such as
In Fig. 3 and specific embodiment shown in Fig. 4, be different with Fig. 1 and embodiment shown in Fig. 2, using support 40 replace every
Absciss layer 30.Also, the quantity of support 40 can be multiple, and the quantity of support 40 can be according to the length of precast track plate 10
Difference is changed.
Specifically, precast track plate 10, prefabricated position limiting structure 21, precast base 20, separation layer 30, elastic buffer bed course 31
Etc. structures it is integral in factory's part assembly or all assembly；Or precast track plate 10, prefabricated position limiting structure 21, precast base
20, the structures such as support 40, elastic buffer bed course 31 are integral in factory's part assembly or all assembly.It is arranged in this way, energy
It is enough first to produce the part-structure in assembled ballastless track system in advance in batches, so to assembled ballastless track system into
During row assembling, cast-in-site layer 50 is applied after being directly adjusted in place the assembling structure produced in batches in advance,
To improve the site operation efficiency of assembled ballastless track system.
Optionally, cast-in-site layer 50 passes through in-site pouring self-compacting concrete forming curves superelevation of outer rail.That is curve
On the superelevation setting cast on-site layer 50 of section.
Optionally, precast track plate 10 is reinforced concrete track plate or prestressed concrete railway board.Preferably, outdoor
Environment preferably uses pre-stress rail plate, preferably uses reinforced concrete track plate in tunnel.
Optionally, the length of precast track plate 10 is 3 meters to 7 meters.It is arranged in this way, the assembly in the application can be made
Formula ballastless track system is adapted to the laying of different rail conditions.
In this application, assembled ballastless track system can be laid on tunnel, ground and bridge.Therefore,
The selection of type and length to precast track plate 10 can according to the paving location of assembled ballastless track system and other
Situation is determined.
A kind of construction method of assembled ballastless track system, assembled ballastless track system are additionally provided in this application
It is above-mentioned assembled ballastless track system, construction method includes prefabrication step and cast-in-site step, wherein factory is pre-
Step processed includes: manufacture precast track plate 10, and limit hole 11 is reserved on precast track plate 10；Under precast track plate 10
Side is laid with separation layer 30 or erection support 40；Elastic buffer bed course 31 is set in limit hole 11；Manufacture precast base 20 and pre-
Position limiting structure 21 processed, so that precast base 20 and prefabricated position limiting structure 21 and precast track plate 10 and elastic buffer bed course 31 and bullet
Property cushion 31 and separation layer 30 or erection support 40 are joined together to form composite structure；Cast-in-site step include: by
Composite structure places on cast on-site layer 50 and makes 50 form of cast-in-site layer.
Specifically, the step of manufacturing precast track plate 10:
S10: the two is simultaneously placed in railway plate die by production steel bar framework of track plate and presstressed reinforcing steel, and pore-forming is arranged
Device；
S11: tensioned prestressing bar and casting concrete；
S12: it is laid with separation layer 30；
S13: concrete curing is carried out.
Further, the step of elastic buffer bed course 31 is set in limit hole 11:
S20: the perforating device in limit hole 11 is removed；
S21: elastic buffer bed course 31 is pasted around limit hole 11.
Specifically, the step of manufacturing precast base 20 and prefabricated position limiting structure 21:
S30: production reinforcing bar 60；
S31: making common framework of steel reinforcement, and framework of steel reinforcement is placed on separation layer 30, and by reinforcing bar 60 be placed on every
On absciss layer 30；
S32: cushion block is set using the support as framework of steel reinforcement；
S33: casting concrete；
S34: concrete curing is carried out.
It should also be noted that, at the scene in work progress: integral precast track plate 10, precast base 20 will be assembled
And the track components such as position limiting structure are transported to construction site, adjust its position by design requirement, then be perfused self-compacting concrete with
Precast base 20 forms overall structure.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
1, the site operation efficiency of assembled ballastless track system is improved；
2, solve the problems, such as that it is poor to have the foundation deformation ability under line that adapts to for rail system in the prior art；
3, solve the problems, such as that track structure durability is poor.
Obviously, above-mentioned the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments should fall within the scope of the present invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein can be in addition to illustrating herein
Or the sequence other than those of description is implemented.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (15)
1. a kind of assembled ballastless track system characterized by comprising
Precast track plate (10), the center of the precast track plate (10) have one or more limit holes (11)；
Precast base (20), the precast base (20) are located at the lower section of the precast track plate (10)；
Prefabricated position limiting structure (21), the prefabricated position limiting structure (21) are protruded into the limit hole (11)；
Separation layer (30) or support (40), be provided between the precast track plate (10) and the precast base (20) it is described every
Absciss layer (30) or the support (40)；
The elastic buffer is arranged between the limit hole (11) and the prefabricated position limiting structure (21) in elastic buffer bed course (31)
Bed course (31)；
Cast-in-site layer (50), the cast-in-site layer (50) be located at the precast base (20) lower section and in-site pouring at
Type.
2. assembled ballastless track system according to claim 1, which is characterized in that
The hole section of the limit hole (11) is rounded, polygon or ellipse；And/or
The aperture of the limit hole (11) is gradually reduced from top to bottom.
3. assembled ballastless track system according to claim 1, which is characterized in that the prefabricated position limiting structure (21) to
It is gradually reduced, and is integrally formed with the precast base (20) from top to bottom.
4. assembled ballastless track system according to claim 1, which is characterized in that setting in the precast base (20)
Reinforcing bar (60), and the part-structure of the reinforcing bar (60) be exposed to the precast base (20) lower section and with the cast-in-site
Layer (50) form, the reinforcing bar (60) is truss bars or door shape muscle.
5. assembled ballastless track system according to claim 1, which is characterized in that the thickness of the precast base (20)
More than or equal to 50mm.
6. assembled ballastless track system according to claim 1, which is characterized in that the separation layer (30) is geotextiles
Layer or rubber layer, can be laid with one or two layers when the geotextile layer is as the separation layer (30).
7. assembled ballastless track system according to claim 1, which is characterized in that the support (40) is multiple and divides
It is two groups, and there are multiple supports (40) in every group, support described in two groups (40) is side by side and interval is arranged, and in group
Multiple supports (40) are successively spaced setting along the extending direction of the assembled ballastless track system.
8. assembled ballastless track system according to claim 1, which is characterized in that
The precast track plate (10), the prefabricated position limiting structure (21), the precast base (20), the separation layer (30),
The elastic buffer bed course (31) is integral in factory's part assembly or all assembly；Or
The precast track plate (10), the prefabricated position limiting structure (21), the precast base (20), the support (40), institute
It is integral in factory's part assembly or all assembly to state elastic buffer bed course (31).
9. assembled ballastless track system according to claim 1, which is characterized in that set on the cast-in-site layer (50)
Set high rail superelevation.
10. assembled ballastless track system according to any one of claim 1 to 9, which is characterized in that the prefabricated rail
Guidance tape (10) is reinforced concrete track plate or prestressed concrete railway board.
11. assembled ballastless track system according to any one of claim 1 to 9, which is characterized in that the prefabricated rail
The length of guidance tape (10) is 3 meters to 7 meters.
12. a kind of construction method of assembled ballastless track system, which is characterized in that the assembled ballastless track system is power
Benefit require any one of 1 to 11 described in assembled ballastless track system, the construction method includes prefabrication step and existing
Casting step, wherein the prefabrication step includes:
It manufactures precast track plate (10), and reserves limit hole (11) on the precast track plate (10)；
Separation layer (30) or erection support (40) are laid in the lower section of the precast track plate (10)；
Elastic buffer bed course (31) are set in the limit hole (11)；
Precast base (20) and prefabricated position limiting structure (21) are manufactured, so that the precast base (20) and the prefabricated position limiting structure
(21) with the precast track plate (10) and the elastic buffer bed course (31) and the separation layer (30) or the support (40)
It is joined together to form composite structure；
The cast-in-site step includes:
The composite structure is placed on cast on-site layer (50) and makes cast-in-site layer (50) form.
13. the construction method of assembled ballastless track system according to claim 12, which is characterized in that the manufacture institute
The step of stating precast track plate (10):
S10: the two is simultaneously placed in railway plate die by production steel bar framework of track plate and presstressed reinforcing steel, and perforating device is arranged；
S11: presstressed reinforcing steel described in tensioning and casting concrete；
S12: the separation layer (30) are laid with；
S13: concrete curing is carried out.
14. the construction method of assembled ballastless track system according to claim 13, which is characterized in that in the limit
The step of elastic buffer bed course (31) are set in hole (11):
S20: the perforating device in the limit hole (11) is removed；
S21: the elastic buffer bed course (31) is pasted around the limit hole (11).
15. the construction method of assembled ballastless track system according to claim 12, which is characterized in that manufacture is described prefabricated
The step of pedestal (20) and the prefabricated position limiting structure (21):
S30: production reinforcing bar (60)；
S31: making common framework of steel reinforcement, and the framework of steel reinforcement is placed on the separation layer (30), and by the reinforcing bar
(60) it is placed on the separation layer (30)；
S32: cushion block is set using the support as the framework of steel reinforcement；
S33: casting concrete；
S34: concrete curing is carried out.
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| CN111074696A (en) * | 2020-01-03 | 2020-04-28 | 西南交通大学 | Assembly type tunnel track unit, assembly type tunnel track and deformation maintenance method thereof |
| CN112239967A (en) * | 2020-08-24 | 2021-01-19 | 中铁工程设计咨询集团有限公司 | Assembled two-square-hole convex limiting track system |
| CN114804751A (en) * | 2021-01-29 | 2022-07-29 | 中铁二院工程集团有限责任公司 | Self-compacting concrete for elastic support block type ballastless track bed |
| CN114837022A (en) * | 2022-06-02 | 2022-08-02 | 江西龙正科技发展有限公司 | Novel UHPC ballastless track |
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