CN210946302U - Rigid short roadbed section double-block type ballastless track structure - Google Patents
Rigid short roadbed section double-block type ballastless track structure Download PDFInfo
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- CN210946302U CN210946302U CN201921616970.9U CN201921616970U CN210946302U CN 210946302 U CN210946302 U CN 210946302U CN 201921616970 U CN201921616970 U CN 201921616970U CN 210946302 U CN210946302 U CN 210946302U
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Abstract
The utility model discloses a two formula ballastless track structures of rigidity short circuit base section, it is supreme including reinforced concrete base, bed board, two formula sleepers, fastener, rail down in proper order, reinforced concrete base, bed board and two formula sleepers are pour on the short road bed of rigidity and are formed a structure wholly with the rigidity short circuit base, and the bed board adopts the door-shaped reinforcing bar to link to each other with the reinforced concrete base. The reinforced concrete track bed board is connected with the reinforced concrete base by adopting door-shaped steel bars, and the reinforced concrete track bed board and the reinforced concrete base are longitudinally, transversely and vertically cast into a whole along a line; the structure of the double-block ballastless track and the rigid roadbed are cast into a whole along the longitudinal direction, the transverse direction and the vertical direction of the line, so that the integrity and the continuity of the double-block ballastless track of the rigid short-circuit base section can meet the requirements.
Description
Technical Field
The utility model relates to a track structure especially relates to a two formula ballastless track structures of rigidity short circuit base section, belongs to high-speed railway ballastless track technical field.
Background
The high-speed railway in the mountainous area mostly adopts a double-block ballastless track structure type, the high-speed railway is built in the hard mountainous area in China, the number of bridges and tunnels accounts for the proportion, and the number of short roadbeds with the length below 30m is large. The traditional technology is as follows: the roadbed section is in transition by adopting a double-block ballastless track structure with end beams and a double-block ballastless track structure of bridge (culvert and tunnel) sections at two ends; however, short roadbed of high-speed railway below 30m is mostly concrete rigid roadbed, and end beam can not be effectively arranged, so that in order to ensure effective anchoring of the double-block ballastless bed, special research needs to be carried out on the double-block ballastless track structure of the short roadbed section.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the method comprises the steps of providing a rigid short-circuit base section double-block ballastless track structure, connecting a reinforced concrete track bed board with a reinforced concrete base by adopting a gate-shaped steel bar, and longitudinally, transversely and vertically pouring the reinforced concrete track bed board and the reinforced concrete base into a whole along a line; the double-block ballastless track structure and the rigid roadbed are poured into a whole along the longitudinal direction, the transverse direction and the vertical direction of the line, so that the integrity and the continuity of the double-block ballastless track of the rigid short circuit base section with the length below 30m can meet the requirements, and the existing problems are effectively solved.
The technical scheme of the utility model is that: the utility model provides a rigidity short circuit base section double-block formula ballastless track structure, it is from supreme down including reinforced concrete base, bed board, double-block formula sleeper, fastener, rail in proper order, reinforced concrete base, bed board, double-block formula sleeper and fastener are pour on rigidity short road bed and form a structure whole with rigidity short circuit base, and bed board and reinforced concrete base adopt the door type reinforcing bar to link to each other, and the rail passes through the fastener and is connected to double-block formula sleeper on.
The height of the track structure is 815mm, which is respectively as follows: 300mm of reinforced concrete base, 260mm of railway bed board, 45mm of double-block sleeper, 34mm of fastener and 176mm of steel rail.
The utility model has the advantages that: compared with the prior art, adopt the technical scheme of the utility model, in order to ensure that length satisfies the requirement at rigidity short circuit base section double block formula ballastless track wholeness, continuity below 30 m: the reinforced concrete track bed plate is connected with the reinforced concrete base by adopting door-shaped steel bars and is cast into a whole along the longitudinal direction, the transverse direction and the vertical direction of a line; the double-block ballastless track structure and the rigid roadbed are longitudinally, transversely and vertically poured into a whole along the line, the conventional groove is omitted on the reinforced concrete base of the technology, the integral ballastless track bed is formed, the end beam is not required to be arranged, and meanwhile, the effective anchoring of the double-block ballastless bed is also ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is the utility model discloses a door type reinforcing bar installation schematic diagram.
FIG. 3 is a top view of the present invention;
fig. 4 is a partial enlarged view of the utility model a.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Example 1: as shown in attached figures 1-2, the rigid short circuit base section double-block ballastless track structure sequentially comprises a reinforced concrete base 1, a track bed plate 2, double-block sleepers 3, fasteners 4 and steel rails 5 from bottom to top, wherein the reinforced concrete base 1, the track bed plate 2, the double-block sleepers 3 and the fasteners 4 are poured on the rigid short circuit base and form a structural whole with the rigid short circuit base, the track bed plate 2 is connected with the reinforced concrete base 1 through door-shaped steel bars, and the steel rails 5 are connected onto the double-block sleepers 3 through the fasteners 4.
Further, the rigid short subgrade is formed by pouring concrete, and the longitudinal length of the subgrade along the line is less than 30 m. The end beam is not needed to be arranged, and meanwhile, the effective anchoring of the double-block ballastless bed is ensured.
Further, the track structure height is 815mm, respectively: reinforced concrete base 1: 300mm, ballast bed plate 2: 260mm, double block sleeper 3: 45mm, fastener 4: 34mm, steel rail 5: 176 mm.
Example 2: a construction method of a rigid short circuit base section double-block ballastless track structure comprises the following steps:
1. carrying out galling or chiseling treatment on a ballastless track foundation surface (top surface of a rigid (concrete) short-circuit foundation) within the width range of the reinforced concrete base 1;
2. the method comprises the following steps of pouring a reinforced concrete base 1 on a rigid short roadbed in a one-step integral manner, embedding portal steel bars 6, arranging the portal steel bars 6 transversely along the middle line of a track (namely between a left strand and a right strand of two steel rails), and longitudinally arranging the portal steel bars 6 between two double-block sleepers 3; after the pouring is finished, the concrete of the reinforced concrete base 1 is maintained;
3. after the reinforced concrete base 1 reaches the required strength, roughening or chiseling the top surface of the reinforced concrete base 1, integrally pouring the reinforced concrete track bed plate 2 at one time, and curing the reinforced concrete track bed plate 2 after pouring is finished;
4. the node of the fastener on the roadbed is 650mm, and is not suitable to be smaller than 600 mm;
5. and a reserved seam with the width of 20mm is arranged between the end part of the continuous track bed board of the rigid short circuit base section and the ballastless track of the bridge or the tunnel section.
The reinforced concrete track bed board is connected with the reinforced concrete base by adopting door-shaped steel bars, and the reinforced concrete track bed board and the reinforced concrete base are longitudinally, transversely and vertically cast into a whole along a line; the double-block ballastless track structure and the rigid roadbed are longitudinally, transversely and vertically poured into a whole along a line, so that the integrity and the continuity of the double-block ballastless track of the rigid short-circuit base section meet requirements.
The parts of the present invention not described in detail are the known techniques of those skilled in the art. Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (2)
1. The utility model provides a rigidity short circuit base section double-block formula ballastless track structure which characterized in that: it is supreme including reinforced concrete base (1), bed board (2), two block type sleepers (3), fastener (4), rail (5) in proper order down from, reinforced concrete base (1), bed board (2), two block type sleepers (3) and fastener (4) are pour on the short road bed of rigidity and form a structure whole with rigidity short circuit base, and bed board (2) adopt door type reinforcing bar to link to each other with reinforced concrete base (1), and rail (5) are connected to on two block type sleepers (3) through fastener (4).
2. The rigid short subgrade section double-block ballastless track structure of claim 1, characterized in that: the height of the track structure is 815mm, which is respectively as follows: 300mm of reinforced concrete base (1), 260mm of track bed board (2), 45mm of double-block sleeper (3), 34mm of fastener (4) and 176mm of steel rail (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921616970.9U CN210946302U (en) | 2019-09-26 | 2019-09-26 | Rigid short roadbed section double-block type ballastless track structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921616970.9U CN210946302U (en) | 2019-09-26 | 2019-09-26 | Rigid short roadbed section double-block type ballastless track structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210946302U true CN210946302U (en) | 2020-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921616970.9U Active CN210946302U (en) | 2019-09-26 | 2019-09-26 | Rigid short roadbed section double-block type ballastless track structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210946302U (en) |
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2019
- 2019-09-26 CN CN201921616970.9U patent/CN210946302U/en active Active
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