CN112239969A - Prefabricated assembled damping track system - Google Patents
Prefabricated assembled damping track system Download PDFInfo
- Publication number
- CN112239969A CN112239969A CN202010859461.XA CN202010859461A CN112239969A CN 112239969 A CN112239969 A CN 112239969A CN 202010859461 A CN202010859461 A CN 202010859461A CN 112239969 A CN112239969 A CN 112239969A
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- Prior art keywords
- prefabricated
- self
- track
- compacting concrete
- concrete layer
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- 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
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses a prefabricated assembly type vibration reduction track system which comprises a plurality of duct pieces which are sequentially connected, wherein the duct pieces form a closed ring, the prefabricated assembly type vibration reduction track system also comprises a plurality of prefabricated track plates which are sequentially connected, the prefabricated track plates are annularly arranged along the inner surface of the closed ring, a self-compacting concrete layer is arranged between the duct pieces and the prefabricated track plates, limit grooves matched with the lower surface of the self-compacting concrete layer are formed in the duct pieces, an isolation layer is arranged between the duct pieces and the self-compacting concrete layer, through holes matched with the upper surface of the self-compacting concrete layer are formed in the prefabricated track plates, and a vibration reduction cushion layer is arranged between the prefabricated track plates and the self-compacting concrete layer. The foundation can be prevented from being cast in situ, and the method has the advantages of small construction workload, good operation environment, high laying and splicing precision, quick construction progress and the like; the prefabricated assembly isolation type track vibration damping structure has the advantages of high construction speed, high factory prefabrication precision, good vibration damping performance, good durability, good smoothness, less maintenance or convenience in maintenance and the like.
Description
Technical Field
The invention relates to an urban rail transit rail structure, in particular to a prefabricated assembly type vibration reduction rail system.
Background
At present, ballastless tracks of high-grade vibration reduction sections in shield intervals of urban rail transit engineering in China mostly adopt cast-in-place structures, before the construction of the ballastless track structures, the bottom of the shield intervals needs to be backfilled with foundation cast-in-place concrete, and the process has the defects of large workload of cast-in-place concrete, poor operation environment, low construction precision, long maintenance time, slow construction progress and the like; the pouring isolation type vibration reduction ballastless track structure also has the defects of large workload of in-situ concrete pouring, poor operation environment, low track structure precision, low construction efficiency, poor track geometric precision, relatively poor smoothness and durability, inconvenience for later-stage operation and maintenance and the like. Because this structure is cast-in-place railway roadbed board, if diseases such as isolated damping layer inefficacy appear in the operation later stage, cast-in-place railway roadbed can't be hung out, influences the maintenance and the change of damping bed course.
Disclosure of Invention
The embodiment of the disclosure provides a prefabricated assembly type vibration reduction track system, which solves the problem of slow construction progress of cast-in-place concrete. The technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided a prefabricated vibration-damping track system comprising:
a prefabricated assembled vibration damping track system comprises a plurality of duct pieces which are connected in sequence, wherein the duct pieces form a closed ring, and the prefabricated assembled vibration damping track system also comprises a plurality of prefabricated track plates which are connected in sequence, the prefabricated track plates are arranged along the inner surface of the closed ring in an annular mode, a self-compacting concrete layer is arranged between the duct pieces and the prefabricated track plates, limiting grooves matched with the lower surface of the self-compacting concrete layer are formed in the duct pieces, an isolating layer is arranged between the duct pieces and the self-compacting concrete layer, through holes matched with the upper surface of the self-compacting concrete layer are formed in the prefabricated track plates, and a vibration damping cushion layer is arranged between the prefabricated track plates and the self-compacting; the upper surface of the prefabricated track plate is connected with a steel rail through a fastener.
The prefabricated track plates are sequentially arranged on the inner surface of the duct piece side by side, and the duct piece is integrated with the track plate base without the need of cast-in-place concrete backfilling operation; the thickness of the prefabricated track plate is large, and the damping cushion layer is pasted at the bottom of the prefabricated track plate, so that a good damping effect is guaranteed. The barrier layer may be a geotextile or a slip film. Through damping bed course, isolation layer, form prefabricated track board, self-compaction concrete layer and section of jurisdiction three-layer separation structure, lay during the construction of being convenient for assemble and operate lift by crane prefabricated track board, self-compaction concrete layer and carry out the maintenance and maintain.
In one embodiment, the self-compacting concrete layer comprises a platform layer, a first limiting boss is connected to the bottom surface of the platform layer and located in the limiting groove, and a second limiting boss is connected to the top surface of the platform layer and extends into the through hole.
Prefabricated track board passes through the spacing boss of second restriction displacement with self-compaction concrete layer, and self-compaction concrete layer slides through the restriction of first spacing boss with the section of jurisdiction, all has the restriction displacement device between the three layer construction.
In one embodiment, the limiting grooves comprise at least two limiting grooves, and the limiting grooves are arranged on the pipe sheet at intervals.
In one embodiment, the duct piece is provided with a grouting hole, and the grouting hole is positioned between the two limiting grooves.
Self-compacting concrete enters the limiting groove through the grouting hole to form a first limiting boss.
In one embodiment, the through holes comprise at least two through holes, and the through holes are arranged at intervals along the length direction of the prefabricated track slab.
Self-compacting concrete is poured under the prefabricated track slab to form two square second limiting bosses for horizontal displacement limitation of the prefabricated track slab.
In one embodiment, the prefabricated track plate is provided with a grouting hole, and the grouting hole is positioned between the two limiting grooves.
Self-compacting concrete is poured into the prefabricated track slab through the grouting hole, and the self-compacting concrete forms a second limiting boss in the through hole
In one embodiment, both ends of the tube sheet are provided with hand holes.
The hand hole is used for splicing two adjacent pipe pieces.
In one embodiment, a plurality of hoisting sleeves are connected to both sides of the prefabricated track slab along the length direction.
The hoisting sleeve is convenient for laying and assembling during construction and hoisting the prefabricated track slab for maintenance and repair during operation.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a front view of a prefabricated vibration-damped rail system according to an embodiment of the present disclosure;
FIG. 2 is a top view of a segment of a prefabricated vibration-damped rail system according to an embodiment of the present disclosure;
FIG. 3 is a front view of a segment of a prefabricated vibration-damped rail system according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a prefabricated track slab in a prefabricated vibration damping track system according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of another embodiment of a prefabricated vibration-damped rail system according to the present disclosure;
FIG. 6 is a top view of a tube sheet B1 in a prefabricated vibration damping track system according to embodiments of the present disclosure;
FIG. 7 is a front view of a tube sheet B1 in a prefabricated vibration damping track system according to an embodiment of the present disclosure; (ii) a
FIG. 8 is a top view of a tube sheet B6 in a prefabricated vibration damping track system according to embodiments of the present disclosure;
fig. 9 is a front view of a tube sheet B6 in a prefabricated vibration damping track system according to an embodiment of the present disclosure.
In the figure, 1, a duct piece, 2, a prefabricated track plate, 3, a self-compacting concrete layer, 3-1, a platform layer, 3-2, a first limiting boss, 3-3, a second limiting boss, 4, a limiting groove, 5, an isolating layer, 6, a through hole, 7, a damping cushion layer, 8, a fastener, 9, a steel rail, 10, a grouting hole, 11, a grouting hole, 12, a hand hole, 13, a lifting sleeve and 14, a bolt hole.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Example 1
As shown in fig. 1, a prefabricated assembly type vibration damping track system comprises a plurality of duct pieces 1 which are connected in sequence, wherein the duct pieces 1 form a closed ring, and further comprises prefabricated track plates 2 which are connected in sequence, the prefabricated track plates 2 are arranged side by side along the inner surface of the closed ring, a self-compacting concrete layer 3 is arranged between the duct pieces 1 and the prefabricated track plates 2, as shown in fig. 2 and 3, limiting grooves 4 matched with the lower surface of the self-compacting concrete layer 3 are formed in the duct pieces 1, an isolating layer 5 is arranged between the duct pieces 1 and the self-compacting concrete layer 3, through holes 6 matched with the upper surface of the self-compacting concrete layer 3 are formed in the prefabricated track plates 2, and a vibration damping cushion 7 is arranged between the prefabricated track plates 2 and the self-compacting concrete layer 3; as shown in fig. 4, the upper surface of the prefabricated track slab 2 is connected with a steel rail 9 through a fastener 8.
In the embodiment, the thickness of the prefabricated track slab 2 is large, and the damping cushion layer 7 is adhered to the bottom of the prefabricated track slab, so that a good damping effect is guaranteed. The barrier layer 5 may be a geotextile or a slip film. Through damping bed course 7, isolation layer 5, form prefabricated track board 2, self-compaction concrete layer 3 and 1 three-layer of section of jurisdiction and break away from the structure, lay during the construction of being convenient for assemble with the operation lift by crane prefabricated track board 2, self-compaction concrete layer 3 and carry out the maintenance and repair.
In the embodiment, the ballastless track substrate and the conventional duct piece are integrated to form the duct piece 1, the ballastless track substrate and the conventional duct piece adopt equal-strength-grade concrete and integrated reinforcing bars, so that the duct piece 1 has enough safety, assembly performance and sealing performance, and the strength and sealing requirements of the shield duct piece in the shield interval of the urban track traffic shield under the long-term action of train load and external water and soil pressure are met. The duct piece 1 is suitable for three lining types, namely a linear lining ring, a wedge-shaped lining ring and a universal lining ring.
In the embodiment, the prefabricated track plates 2 are sequentially arranged on the inner surface of the closed ring formed by the duct pieces 1, and when one duct piece 1 corresponds to the lower part of the width range of the prefabricated track plates 2, the duct piece 1 is a single shield duct piece; as shown in fig. 5, when two segments 1 are arranged below the width of the prefabricated track slab 2, the bottom shield segment is divided into two corresponding segments 1, and the two segments 1 are assembled with each other. At this time, the lower part of the width range of the prefabricated track board 2 corresponds to the duct piece B1 and the duct piece B6, as shown in fig. 6-7, the limiting groove 4 on the duct piece B1 is close to the joint with the duct piece B6, the distance between the hand hole 12 and the limiting groove 4 is far, as shown in fig. 8-9, the limiting groove 4 on the duct piece B6 is close to the hand hole 12.
The self-compacting concrete layer 3 comprises a platform layer 3-1, the bottom surface of the platform layer is connected with a first limiting boss 3-2, the first limiting boss 3-2 is positioned in a limiting groove 4, the top surface of the platform layer is connected with a second limiting boss 3-3, and the second limiting boss 3-3 extends into a through hole 6.
In this embodiment, the prefabricated track slabs 2 are placed on the segment 1 side by side, so the connection line of the two through holes 6 is perpendicular to the connection line of the two limiting grooves 4, at this time, the two square second limiting bosses 3-3 limit the horizontal displacement of the prefabricated track slabs 2, and meanwhile, the two first limiting bosses 3-2 are matched with the limiting grooves 4 to limit the self-compacting concrete layer 3. The prefabricated track slab 2 and the self-compacting concrete layer 3 are limited in displacement through a second limiting boss 3-3, the self-compacting concrete layer 3 and the duct piece 1 are limited in sliding through a first limiting boss 3-2, and displacement limiting devices are arranged between the three-layer structure.
The segment 1 is provided with a grouting hole 10, and the grouting hole 10 is positioned between the two limiting grooves 4. Grout holes 11 are formed in the prefabricated track plate 2, and the grout holes 11 are located between the two limiting grooves 4. Self-compacting concrete is poured into the prefabricated track slab 2 through the grouting holes 11, the self-compacting concrete forms second limiting bosses 3-3 in the through holes 6, and meanwhile, the self-compacting concrete enters the limiting grooves 4 through the grouting holes 10 to form first limiting bosses 3-2.
In this embodiment, a plurality of fasteners 8 are sequentially arranged along the length direction of the surface of the prefabricated track slab 2, the plurality of fasteners 8 are arranged in two parallel rows, and each row of fasteners 8 is connected with a steel rail 9.
And a plurality of hoisting sleeves 13 are connected to the two sides of the prefabricated track slab 2 along the length direction. The prefabricated track slab 2 is convenient to lay and assemble during construction and lift during operation to maintain.
In the embodiment, a railway tunnel limit state method and a railway track limit state method are adopted to respectively calculate and design the reinforcing bar system of the duct piece 1 and the prefabricated assembly isolation type vibration reduction track structure, so that the structure stress system and the reinforcing bar configuration are optimized, and the using amount of reinforcing bar materials is further reduced. By adopting the CP III measurement and control technology in the high-speed rail, the integrated duct piece 1 is ensured to have higher assembling precision, and the prefabricated track plate 2 has higher smoothness and stability.
In the embodiment, the track substrate and the conventional shield segment are integrally prefabricated into the segment, so that the in-situ pouring construction of the substrate can be avoided, and the method has the advantages of small construction workload, good operation environment, high laying and assembling precision, quick construction progress and the like; the prefabricated assembly isolation type track vibration damping structure has the advantages of high construction speed, high factory prefabrication precision, good vibration damping performance, good durability, good smoothness, less maintenance or convenience in maintenance and the like; through damping bed course, isolation layer, form prefabricated track board, self-compaction concrete layer and section of jurisdiction three-layer separation structure, lay during the construction of being convenient for assemble and operate lift by crane prefabricated track board, self-compaction concrete layer and carry out the maintenance and maintain.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. A prefabricated assembled vibration reduction track system is characterized by comprising a plurality of duct pieces which are connected in sequence, wherein the duct pieces form a closed ring, the prefabricated assembled vibration reduction track system also comprises a plurality of prefabricated track plates which are connected in sequence, the prefabricated track plates are arranged along the inner surface of the closed ring in an annular mode, a self-compacting concrete layer is arranged between the duct pieces and the prefabricated track plates, a limiting groove matched with the lower surface of the self-compacting concrete layer is formed in each duct piece, an isolating layer is arranged between each duct piece and the self-compacting concrete layer, a through hole matched with the upper surface of the self-compacting concrete layer is formed in each prefabricated track plate, and a vibration reduction cushion layer is arranged between each prefabricated track plate and the self-compacting concrete layer; the upper surface of the prefabricated track plate is connected with a steel rail through a fastener.
2. The prefabricated assembled vibration damping track system according to claim 1, wherein the self-compacting concrete layer comprises a platform layer, a first limiting boss is connected to the bottom surface of the platform layer, the first limiting boss is located in a limiting groove, a second limiting boss is connected to the top surface of the platform layer, and the second limiting boss extends into the through hole.
3. The prefabricated vibration damping track system of claim 2, wherein the limiting grooves comprise at least two limiting grooves, and the limiting grooves are arranged on the pipe sheets at intervals.
4. The prefabricated vibration damping track system of claim 3, wherein the tube sheets are provided with grouting holes, and the grouting holes are located between the two limiting grooves.
5. The prefabricated vibration damping track system according to claim 1, wherein the number of the through holes is at least two, and the through holes are spaced apart along the length direction of the prefabricated track slab.
6. The prefabricated vibration damping track system as claimed in claim 5, wherein the prefabricated track slab is provided with a grouting hole, and the grouting hole is located between the two limiting grooves.
7. The prefabricated vibration damping track system as claimed in claim 1, wherein both ends of the duct piece are provided with hand holes.
8. The prefabricated vibration damping track system according to claim 1, wherein a plurality of hoisting sleeves are connected to both sides of the prefabricated track slab along the length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010859461.XA CN112239969A (en) | 2020-08-24 | 2020-08-24 | Prefabricated assembled damping track system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010859461.XA CN112239969A (en) | 2020-08-24 | 2020-08-24 | Prefabricated assembled damping track system |
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| CN112239969A true CN112239969A (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010859461.XA Pending CN112239969A (en) | 2020-08-24 | 2020-08-24 | Prefabricated assembled damping track system |
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| CN (1) | CN112239969A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687260A (en) * | 2022-03-07 | 2022-07-01 | 中铁南方投资集团有限公司 | Assembly type track construction method and assembly type track structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114687260A (en) * | 2022-03-07 | 2022-07-01 | 中铁南方投资集团有限公司 | Assembly type track construction method and assembly type track structure |
| CN114687260B (en) * | 2022-03-07 | 2024-02-13 | 中铁南方投资集团有限公司 | Assembly type track construction method and assembly type track structure |
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Application publication date: 20210119 |