CN213772737U - Strut type straight-paving slab ballastless track system - Google Patents
Strut type straight-paving slab ballastless track system Download PDFInfo
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- CN213772737U CN213772737U CN202022259626.8U CN202022259626U CN213772737U CN 213772737 U CN213772737 U CN 213772737U CN 202022259626 U CN202022259626 U CN 202022259626U CN 213772737 U CN213772737 U CN 213772737U
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Abstract
The traditional precast slab track structure adopts a post-pouring layer for leveling, and is slow in implementation speed, poor in precision and difficult in quality control in a limited tunnel space. The utility model aims to solve the technical problem of providing a strut type straight-paving slab ballastless track system aiming at the defects of the prior art, which comprises a steel rail, a fastener, a track slab, an adjusting support, a base, a track foundation, an isolating layer and a limiting boss, wherein the base is positioned on the track foundation, and the adjusting support is positioned between the track slab and the base; the track plate, the adjusting support, the base and the track foundation are mutually in a detachable assembly structure. The track structure can discharge rainwater in time, has stable structure, reduces the field masonry workload, and greatly improves the field construction efficiency and quality.
Description
Technical Field
The utility model relates to a track traffic engineering technical field belongs to urban rail transit's track structure, specifically is a straight bed board formula ballastless track system of pillar type.
Background
In a large-traffic-volume, energy-saving, environment-friendly, safe and quick rail transit transportation system, a rail is the basis of transportation equipment, the rail directly bears train load and guides a train to run, and a rail structure must have enough strength and stability. The rail laying frame is one of key links of rail traffic engineering construction, rail engineering start work and rail transit have node targets with milestone significance, rail laying is started to mark that the rail traffic construction has obtained stage achievements, each 'point' of station and interval civil engineering is connected into a 'line' through the rail engineering started from the top, and the rail transit is not only the foundation of rail transportation, but also the precondition of subsequent installation of rail side facilities. Aiming at different line laying modes, the most restriction links or influence factors of underground line rail communication are realized, the rail laying operation space is narrow and small, the visibility condition is poor, and the rail laying frame is limited to continuous communication of all stations and interval tunnels along the line by taking a rail laying base as a starting point. In urban areas, the laying mode mainly adopts a tunnel and overhead mode, maintenance and repair operations are greatly limited in space, and the working environment is very severe due to narrow space in the tunnel and poor ventilation quality. From the research results of a large number of diseases, with the improvement of the running speed of the train on the ballastless track, under the action of factors such as dynamic load of the train, underground water, uneven settlement of the tunnel and the like, the tunnel has the problems of local cracking of a track bed, slurry turning and mud bleeding at the bottom of the tunnel, change of track spacing, serious vehicle shaking during passing of the train and the like. Therefore, a new track structure is required to be designed to reduce the occurrence of diseases.
An assembly plate type track structure disclosed in patent document CN205934593U includes a steel rail, a fastener, a track plate, a viscoelastic cushion layer, a base, a track foundation, an isolation layer, a limit pin, and a lifting point, wherein the base is located on the track foundation, the viscoelastic cushion layer is located between the track plate and the base, and the track plate has no post-cast leveling layer; structures are arranged on both sides of the track plate, such as drainage ditches or concrete filling, flush with the track plate, and isolation layers are arranged between the track plate and the structures. The track plate, the viscoelastic cushion layer, the base and the track foundation are mutually detachable and assembled structures, but not fixed together and undetachable structures, and the track plate, the viscoelastic cushion layer and the base are prevented from mutually sliding through frictional resistance of the viscoelastic cushion layer and the limiting pin. However, under the action of factors such as dynamic load of trains, underground water, uneven settlement of tunnels and the like, the tunnel has the problems of local cracking of a track bed, slurry and mud pumping at the bottom of the tunnel, change of track spacing, serious vehicle shaking during passing of the train and the like.
Patent document CN204370701U discloses a mechanical connecting device for reinforcing bars in a fabricated concrete building structure, which is used for connecting reinforcing bars by upsetting the ends of the reinforcing bars to be connected, and inserting reinforcing bar sleeves into the ends, so as to connect the reinforcing bars by using the connecting sleeves and connecting bolts. The connection mode is complex in structure and complex in construction, the gap reserved between the clamp ring arranged on the steel bar sleeve and the steel bar to be connected can also cause that the adjacent assembly type sleeper slab or track slab is not on the same plane, and the precision is difficult to control during construction.
SUMMERY OF THE UTILITY MODEL
The traditional precast slab track structure adopts a post-pouring layer for leveling, and is slow in implementation speed, poor in precision and difficult in quality control in a limited tunnel space. The utility model aims to solve the technical problem that not enough to prior art provides a straight bed board formula ballastless track system of column. The technical scheme is as follows:
a column type straight-paving slab ballastless track system comprises steel rails, fasteners, track slabs, adjusting supports, a base, a track foundation, an isolation layer and a limiting boss, wherein the base is positioned on the track foundation, and the adjusting supports are positioned between the track slabs and the base; the track plate, the adjusting support, the base and the track foundation are mutually in a detachable assembly structure.
Furthermore, when the construction error of the base is larger than 10mm, an adjusting gasket is arranged between the base and the adjusting support.
Further, the adjusting support is a rubber support.
Furthermore, the limiting bosses are arranged at two ends or two sides of the track plate.
Furthermore, the isolating layer is arranged between the track plate and the limiting boss.
Further, the surface of the track slab is provided with track slab parameter marks.
Furthermore, the deviation range of the elevation of the rail bearing platform on the upper surface of the rail plate is 0mm to-1 mm.
Further, the deviation range of the position of the steel rail fastener and the preset position is 0mm to-0.5 mm.
Further, the allowable range of the flatness error of the lower surface of the track plate is 2 mm/m.
Further, the construction error of the base is controlled to be 0-10 mm.
Compared with the prior art, the beneficial effects of the utility model are that: the track structure can drain rainwater in time, so that the rainwater is prevented from staying in the tunnel for a long time; the track structure adopts a strut type structure, so that the possibility of diseases such as accumulated water under the plate, plate bottom void, slurry turning and mud pumping is avoided; meanwhile, the vibration and pressure on the steel rail can be reduced by installing the adjusting support, the stable structure of the device is increased, and the stability of the device is improved; by eliminating the post-cast concrete adjusting layer, the on-site masonry workload is reduced, and the on-site construction efficiency and quality are greatly improved.
Drawings
Fig. 1 is a schematic structural plane view of a column type straight-paving slab ballastless track system of the present invention;
fig. 2 is a schematic cross-sectional view (straight line section) of a strut-type straight-paving ballastless track system a-a of the present invention;
fig. 3 is a schematic cross-sectional view (curve section) of a strut-type straight-paving ballastless track system a-a.
In the figure:
1. steel rail 2, fastener 3, rail plate 4 and adjusting support
5. Base 6, track basis 7, isolation layer 8, spacing boss
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 3, in the slab ballastless track structure of the present invention, a steel rail 1, a fastener 2, a track slab 3, an adjusting support 4, a base 5, a track foundation 6, an isolating layer 7, and a limiting boss 8 are provided, wherein the base 5 is located on the track foundation 6, and the adjusting support 4 is located between the track slab 3 and the base 5; the track plate 3, the adjusting support 4, the base 5 and the track foundation 6 are of a detachable assembly structure. Wherein, the adjusting support 4 is a rubber support. The limiting bosses 8 are arranged at two ends or two sides of the track plate 3. The isolating layer 7 is arranged between the track plate 3 and the limiting boss 8.
In the actual construction process, when the error of the base is controlled to be 0-minus 10mm, no adjusting gasket is required to be placed; when the error is larger than 10mm, the error is larger, and an adjusting gasket can be arranged between the base and the adjusting support to eliminate the influence caused by the construction error of the base.
In order to facilitate construction, the surface of the track slab 3 is provided with track slab parameter marks;
the deviation range of the elevation of the rail bearing platform on the upper surface of the rail plate is 0mm to-1 mm; the deviation range of the position of the steel rail fastener and the preset position is 0mm to-0.5 mm; the allowable range of the flatness error of the lower surface of the track plate is 2 mm/m.
The utility model discloses a ballastless track system's work progress as follows:
firstly, constructing rail engineering measurement network data, and paving and constructing a reinforced concrete base or an asphalt concrete base on the basis of a rail which is qualified in acceptance; then, an adjusting support is installed on the base, and the influence caused by the construction error of the base is eliminated through adjusting a gasket when the error is larger according to actual needs;
the method comprises the following steps of arranging a track plate 3 on an adjusting support 4 or an adjusting gasket without a post-cast leveling layer on the track plate, fixing a steel rail 1 on the precisely adjusted track plate 3 by using a fastener 2, arranging limiting bosses 8 at two ends or two sides of the track plate 3 after the track plate 3 is accurately positioned, and filling gaps between the track plate 3 and the limiting bosses by adopting an isolation layer (the isolation layer is made of polyurethane material or other elastic materials).
The utility model discloses a straight bed board formula ballastless track structure of pillar type has cancelled the post-cast leveling layer, changes and adopts the straight formula of spreading to spread the rail, and its characteristics are: firstly, implementing a base, directly laying an adjusting support after precision measurement and positioning, then installing a prefabricated track slab, longitudinally forming a unit slab structure along a road of a ballast bed, and controlling displacement of the track slab through a limiting boss. In the actual construction process, if the construction of the base has errors, and the errors of the base are controlled to be 0-minus 10mm, no adjusting gasket is required to be placed; when the error is larger than 10mm, the influence caused by the construction error of the base can be eliminated by adjusting the gasket. The track structure can discharge rainwater in time, has stable structure, reduces the field masonry workload, and greatly improves the field construction efficiency and quality.
The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (10)
1. A column type straight-paving slab ballastless track system is characterized by comprising a steel rail (1), a fastener (2), a track slab (3), an adjusting support (4), a base (5), a track foundation (6), an isolating layer (7) and a limiting boss (8), wherein the base (5) is positioned on the track foundation (6), and the adjusting support (4) is positioned between the track slab (3) and the base (5); the track plate (3), the adjusting support (4), the base (5) and the track foundation (6) are mutually in a detachable assembly structure.
2. The strut type straight-paved ballastless track system of claim 1, wherein: when the construction error of the base is larger than 10mm, an adjusting gasket is arranged between the base and the adjusting support.
3. The strut type straight-paved ballastless track system of claim 1 or 2, wherein: the adjusting support (4) is a rubber support.
4. The strut type straight-paved ballastless track system of claim 1 or 2, wherein: the limiting bosses (8) are arranged at two ends or two sides of the track plate (3).
5. The strut type straight-paved ballastless track system of claim 4, wherein: the isolating layer (7) is arranged between the track plate (3) and the limiting boss (8).
6. The strut type straight-paved ballastless track system of claim 1, wherein: and the surface of the track slab (3) is provided with track slab parameter marks.
7. The strut type straight-paved ballastless track system of claim 1, wherein: the deviation range of the elevation of the rail bearing platform on the upper surface of the rail plate is 0mm to-1 mm.
8. The strut type straight-paved ballastless track system of claim 1, wherein: the deviation range of the position of the steel rail fastener and the preset position is 0mm to-0.5 mm.
9. The strut type straight-paved ballastless track system of claim 1, wherein: the allowable range of the flatness error of the lower surface of the track plate is 2 mm/m.
10. The strut type straight-paved ballastless track system of claim 1, wherein: the construction error of the base is controlled to be 0-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022259626.8U CN213772737U (en) | 2020-10-12 | 2020-10-12 | Strut type straight-paving slab ballastless track system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022259626.8U CN213772737U (en) | 2020-10-12 | 2020-10-12 | Strut type straight-paving slab ballastless track system |
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| Publication Number | Publication Date |
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| CN213772737U true CN213772737U (en) | 2021-07-23 |
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| CN202022259626.8U Active CN213772737U (en) | 2020-10-12 | 2020-10-12 | Strut type straight-paving slab ballastless track system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305749A (en) * | 2022-10-11 | 2022-11-08 | 成都西交华创科技有限公司 | High-temperature superconducting magnetic suspension traffic track slab and braking method thereof |
-
2020
- 2020-10-12 CN CN202022259626.8U patent/CN213772737U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305749A (en) * | 2022-10-11 | 2022-11-08 | 成都西交华创科技有限公司 | High-temperature superconducting magnetic suspension traffic track slab and braking method thereof |
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