CN211713525U - Assembled solidification ballast bed track system - Google Patents
Assembled solidification ballast bed track system Download PDFInfo
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- CN211713525U CN211713525U CN202020139774.3U CN202020139774U CN211713525U CN 211713525 U CN211713525 U CN 211713525U CN 202020139774 U CN202020139774 U CN 202020139774U CN 211713525 U CN211713525 U CN 211713525U
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Abstract
The utility model provides an assembled solidification ballast bed track system, including the compound track unit of two piece at least, the filling layer, the adjustment layer, first rail and second rail set up in compound track unit upper surface and perpendicular compound track unit axis, compound track unit vertically arranges, the adjustment layer sets up in stereoplasm basis upper surface, the filling layer sets up in the filling layer and sets up in adjustment layer upper surface, compound track unit lower part sets up and connects the setting in the inside just compound track unit lower surface of filling layer and set up in adjustment layer upper surface, compound track unit is prefabricated monolithic structure. The solidified track bed and sleeper units are prefabricated in an industrial mode, comprehensive cost is reduced, structural quality is improved, and indoor industrial prefabrication, field assembly type construction and unit maintenance after damage of the track structure are achieved.
Description
Technical Field
The utility model relates to a track field especially relates to a railway roadbed rail system.
Background
The polyurethane solidified track bed is a novel track structure, and is characterized in that a mixture consisting of isocyanate, polyol and the like is poured into a ballast track bed which has reached a stable state, foaming, expansion and solidification are completed among the ballasts, so that a foamed polyurethane elastic material is extruded into gaps among the ballasts, and ballast particles are firmly bonded to form an elastic integral track bed structure.
The technology has the advantages of both the ballast track and the ballastless track, has the characteristics of good elasticity and elasticity retention capacity, good stability of accumulated deformed filial piety, small maintenance workload and the like, solves the technical problem of difficult maintenance of the bridge and tunnel section of the ballast track, has good vibration and noise reduction functions, provides a proper track structural form for urban track traffic, and is rich and perfect in the existing track structural technical system.
Although certain experience is accumulated in the aspect of the application of the polyurethane curing ballast bed technology in China at the present stage, the polyurethane curing ballast bed still has the problems of high manufacturing cost, strict pouring conditions and process requirements and the like, and further popularization and application of the polyurethane curing ballast bed are restricted.
There is a need for an assembled cured track bed track system that can achieve the goals of reducing overall cost and improving structural quality.
Disclosure of Invention
The utility model relates to a cost is on the high side among the solution prior art, and the comparatively strict problem of pouring condition and technological requirement provides an assembled solidification railway roadbed rail system, through carrying out the batch production prefabrication to solidification railway roadbed and sleeper unit to reach the purpose that reduces comprehensive cost and improve structural quality, solved above-mentioned problem.
The utility model provides an assembled solidification railway roadbed track system, including at least two compound track units, the filling layer, the adjustment layer, first rail and second rail set up in compound track unit upper surface and perpendicular compound track unit axis, compound track unit longitudinal arrangement, the adjustment layer sets up in stereoplasm basis upper surface, the filling layer sets up in the adjustment layer upper surface, compound track unit lower part sets up in the filling layer inside and compound track unit lower surface sets up in the adjustment layer upper surface, compound track unit is prefabricated integral structure; the composite track unit comprises a sleeper, a first curing track bed, a second curing track bed, a first fastener and a second fastener, wherein the first curing track bed and the second curing track bed are respectively and oppositely arranged on the upper surface of the adjusting layer, the lower surfaces of two ends of the sleeper are respectively arranged on the upper surfaces of the first curing track bed and the second curing track bed, a first steel rail is arranged on the upper surface of one end of the sleeper through the first fastener, and a second steel rail is arranged on the upper surface of the other end of the sleeper through the second fastener.
Indoor factory prefabrication of a track structure can be realized, and parameters such as the cleanliness compactness of the railway ballast and the like can be accurately controlled; the broken stone ballast is solidified by adopting a flexible solidifying material, and the elasticity and the rigidity of the ballast bed cannot be greatly changed along with the load of the train.
The bottom adjusting layer can adopt graded broken stones or self-compacting concrete according to the line condition. And (2) prefabricating the composite track unit in a factory, wherein the solidified track bed aggregate is composed of crushed stone ballast with specified gradation, and foaming and bonding are carried out through a polyurethane material to solidify the discrete crushed stone ballast and the sleeper into the integral composite track unit.
An assembled solidification railway roadbed track system, as preferred mode, the filling layer height is less than first rail minimum and second rail minimum.
An assembled solidification railway roadbed track system, as preferred mode, the filling layer is functional packing rubble.
An assembled solidification railway roadbed track system, as preferred mode, first solidification railway roadbed and second solidification railway roadbed are polyurethane solidification rubble railway ballast bed.
The polyurethane solidified track bed is not a granular body structure any longer, but a solidified integral structure. Under the action of train impact and vibration load, the residual deformation of the ballast bed caused by relative dislocation between ballast particles can be greatly reduced, and the gaps between the crushed stone particles are filled with expanded polyurethane in a compressed state, so that the stress on contact points (surfaces) of the crushed stone particles is reduced, the crushing and pulverization of the ballast particles are delayed, and the absolute accumulated deformation of the ballast bed is only one tenth of that of a common crushed stone ballast bed. The polyurethane extruded between the ballast particles in the polyurethane curing ballast bed has elasticity, so that the connection between the ballast particles is flexible connection, therefore, the internal structure of the polyurethane curing ballast bed can be torn along the polyurethane extrusion layer, the damage of the ballast particles cannot be caused, and the polyurethane curing ballast bed can be ensured to have good elasticity under the action of train load.
An assembled solidification railway roadbed track system, as preferred mode, be the prefabricated integral type of detachable between sleeper and the first solidification railway roadbed, between sleeper and the second solidification railway roadbed.
An assembled solidification railway bed track system, as preferred mode, the high more than or equal to first solidification railway bed height of filling layer and the second solidification railway bed height of sleeper both sides.
An assembled solidification railway roadbed track system, as preferred mode, first solidification railway roadbed includes first solidification railway roadbed body and first mounting groove, first solidification railway roadbed body is the cube, first mounting groove sets up in first solidification railway roadbed body upper surface, first mounting groove is at two adjacent surface openings of first solidification railway roadbed, a sleeper side end sets up in first mounting groove.
An assembled solidification railway bed track system, as preferred mode, the second solidification railway bed includes second solidification railway bed body and second mounting groove, the second solidification railway bed body is the cube, the second mounting groove sets up in second solidification railway bed body upper surface, the second mounting groove is at two adjacent surface openings of second solidification railway bed, sleeper opposite side tip sets up in the second mounting groove.
Because the pores among the ballast particles under the track are filled with the polyurethane material and the drainage is carried out by adding the drainage cushion layer, the mechanical drainage performance of the track bed is enhanced, and the track bed pollution caused by dust invading from the outside of the traditional track bed is avoided. Therefore, the maintenance and maintenance operations such as daily tamping, screen cleaning and the like are not needed. Not only greatly saves the maintenance expenditure of the track, but also avoids the secondary damage to the ballast particles caused by tamping and cleaning operations. The purpose of prolonging the service life of the ballast bed is achieved.
An assembled solidification railway roadbed track system, as preferred mode, non-contact sets up between the compound track unit.
An assembled solidification railway roadbed track system, its construction divide into following step:
s1, transporting the prefabricated and molded composite track unit to a construction site, and longitudinally placing the track bed sleeper units on a lower foundation at preset intervals along a line by adopting an assembly type construction method;
s2, mounting the first fastener and the second fastener on the sleeper, and mounting the first steel rail and the second steel rail through the first fastener and the second fastener;
and S3, fine line adjustment is carried out through an adjusting layer at the bottom of the composite track unit, so that the geometric dimension of the track meets the requirement.
And S4, filling functional graded broken stone ballast in the middle of the sleeper and on the side edge of the unit.
When the disease takes place when the circuit later stage needs maintenance, adjust the maintenance through the fastener earlier, after surpassing the fastener adjustment volume, adjust through the adjustment layer of compound track unit bottom, when fastener and adjustment layer all can't adjust, directly change the compound track unit of different railway roadbed thickness.
Certain intervals are arranged among the precast blocks so as to ensure the maintainability of the later-stage track structure.
The utility model discloses beneficial effect as follows:
(1) the solidified track bed and sleeper units are prefabricated in an industrial manner, so that the comprehensive cost is reduced, the structural quality is improved, and indoor industrial prefabrication, field assembly type construction and unit maintenance after damage of the track structure are realized;
(2) the integrated structure is adopted, the structural integrity is strong, the daily maintenance and repair are not needed, the repair is easy after the damage, and the technical economy is outstanding;
(3) the lateral wrapping of the cured track bed on the sleeper is enhanced, so that the structural stability is improved;
(4) and a certain interval is arranged between the adjacent composite track units so as to ensure the maintainability of the later-stage track structure.
Drawings
FIG. 1 is a schematic vertical cross-sectional view of an assembled cured track bed track system;
FIG. 2 is a schematic top view of an assembled cured track bed track system;
FIG. 3 is a schematic view of a fabricated cured track bed track system composite track unit;
FIG. 4 is a schematic view of a first curing track bed of an assembled curing track bed track system;
FIG. 5 is a schematic view of a second cured track bed of an assembled cured track bed track system.
Reference numerals:
1. a composite track unit; 11. a sleeper; 12. a first solidified track bed; 121. a first solidified track bed body; 122. a first mounting groove; 13. a second solidified track bed; 131. a second solidified track bed body; 132. a second mounting groove; 14. a first fastener; 15. a second fastener; 2. a filling layer; 3. an adjustment layer; 4. a first steel rail; 5. and a second steel rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in fig. 1-2, an assembled solidification ballast bed track system, compound track unit 1 including at least two, filling layer 2, adjustment layer 3, first rail 4 and second rail 5 set up in 1 upper surface of compound track unit and perpendicular compound track unit 1 axis, compound track unit 1 vertically arranges, adjustment layer 3 sets up in stereoplasm basis upper surface, filling layer 2 sets up in adjustment layer 3 upper surface, 1 lower part of compound track unit sets up in filling layer 2 inside and compound track unit 1 lower surface connect set up in adjustment layer 3 upper surface, compound track unit 1 is prefabricated integral structure. The height of the filling layer 2 is lower than the lowest point of the first steel rail 4 and the lowest point of the second steel rail 5. The filling layer 2 is a functional filling macadam. The composite track units 1 are arranged in a non-contact manner.
As shown in fig. 3, the composite track unit 1 includes a sleeper 11, a first cured track bed 12, a second cured track bed 13, a first fastener 14 and a second fastener 15, the first cured track bed 12 and the second cured track bed 13 are respectively and oppositely disposed on the upper surface of the adjustment layer 3, lower surfaces of two ends of the sleeper 11 are respectively disposed on the upper surfaces of the first cured track bed 12 and the second cured track bed 13, the first rail 4 is disposed on the upper surface of one end of the sleeper 11 through the first fastener 14, and the second rail 5 is disposed on the upper surface of the other end of the sleeper 11 through the second fastener 15. The first solidified track bed 12 and the second solidified track bed 13 are both polyurethane solidified gravel ballast track beds. The sleepers 11 and the first solidified track bed 12 and the sleepers 11 and the second solidified track bed 13 are all detachably prefabricated and integrated. The height of the filling layer 2 on both sides of the sleeper 11 is more than or equal to the height of the first solidified track bed 12 and the height of the second solidified track bed 13.
As shown in fig. 4, the first curing track bed 12 includes a first curing track bed body 121 and a first mounting groove 122, the first curing track bed body 121 is a cube, the first mounting groove 122 is disposed on the upper surface of the first curing track bed body 121, the first mounting groove 122 is opened on two adjacent surfaces of the first curing track bed 121, and one side end of the sleeper 11 is disposed in the first mounting groove 122.
As shown in fig. 5, the second curing track bed 13 includes a second curing track bed body 131 and a second mounting groove 132, the second curing track bed body 131 is a cube, the second mounting groove 132 is disposed on the upper surface of the second curing track bed body 131, the second mounting groove 132 is open on two adjacent surfaces of the second curing track bed 131, and the other end of the rail 11 is disposed in the second mounting groove 132.
The coordinated working of the polyurethane track bed and the sleepers 11 is similar to that of a gravel track bed, and the sleepers 11 are not in a fully consolidated relationship with the first and second solidified track beds 12, 13. By using the elasticity of the track bed, tamping between the rail bottom and the track bed top surface can be prevented.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. An assembled curing track bed track system, characterized in that: the composite track comprises at least two composite track units (1), a filling layer (2), an adjusting layer (3), a first steel rail (4) and a second steel rail (5), wherein the first steel rail (4) and the second steel rail (5) are arranged on the upper surface of the composite track unit (1) and are perpendicular to the axis of the composite track unit (1), the composite track units (1) are longitudinally arranged, the adjusting layer (3) is arranged on the upper surface of a hard foundation, the filling layer (2) is arranged on the upper surface of the adjusting layer (3), the lower part of the composite track unit (1) is arranged in the filling layer (2), the lower surface of the composite track unit (1) is arranged on the upper surface of the adjusting layer (3), and the composite track unit (1) is of a prefabricated integral structure; composite track unit (1) includes sleeper (11), first solidification railway bed (12), second solidification railway bed (13), first fastener (14) and second fastener (15), first solidification railway bed (12) with second solidification railway bed (13) set up relatively respectively in adjustment layer (3) upper surface, sleeper (11) both ends lower surface set up respectively in first solidification railway bed (12) with second solidification railway bed (13) upper surface, first rail (4) pass through first fastener (14) set up in sleeper (11) one end upper surface, second rail (5) pass through second fastener (15) set up in sleeper (11) other end upper surface.
2. The fabricated cured track bed track system of claim 1, wherein: the height of the filling layer (2) is lower than the lowest point of the first steel rail (4) and the lowest point of the second steel rail (5).
3. The fabricated cured track bed track system of claim 1, wherein: the filling layer (2) is a functional filling macadam.
4. The fabricated cured track bed track system of claim 1, wherein: the first curing track bed (12) and the second curing track bed (13) are both polyurethane curing gravel ballast track beds.
5. The fabricated cured track bed track system of claim 1, wherein: the detachable prefabricated integrated type sleeper structure is characterized in that a detachable prefabricated integrated body is arranged between the sleeper (11) and the first solidified track bed (12) and between the sleeper (11) and the second solidified track bed (13).
6. The fabricated cured track bed track system of claim 1, wherein: the height of the filling layer (2) on two sides of the sleeper (11) is more than or equal to the height of the first solidified track bed (12) and the height of the second solidified track bed (13).
7. The fabricated cured track bed track system of claim 1, wherein: the first curing ballast bed (12) comprises a first curing ballast bed body (121) and a first mounting groove (122), the first curing ballast bed body (121) is a cube, the first mounting groove (122) is formed in the upper surface of the first curing ballast bed body (121), the first mounting groove (122) is formed in openings in two adjacent surfaces of the first curing ballast bed body (121), and one side end portion of the sleeper (11) is arranged in the first mounting groove (122).
8. The fabricated cured track bed rail system of claim 7, wherein: the second solidification ballast bed (13) comprises a second solidification ballast bed body (131) and a second mounting groove (132), the second solidification ballast bed body (131) is a cube, the second mounting groove (132) is formed in the upper surface of the second solidification ballast bed body (131), the second mounting groove (132) is formed in openings in two adjacent surfaces of the second solidification ballast bed body (131), and the end of the other end of the sleeper (11) is arranged in the second mounting groove (132).
9. The fabricated cured track bed track system of claim 1, wherein: the composite track units (1) are arranged in a non-contact manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020139774.3U CN211713525U (en) | 2020-01-21 | 2020-01-21 | Assembled solidification ballast bed track system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020139774.3U CN211713525U (en) | 2020-01-21 | 2020-01-21 | Assembled solidification ballast bed track system |
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| CN211713525U true CN211713525U (en) | 2020-10-20 |
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| CN202020139774.3U Active CN211713525U (en) | 2020-01-21 | 2020-01-21 | Assembled solidification ballast bed track system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111218858A (en) * | 2020-02-10 | 2020-06-02 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Close-fitting type elastic curing track system |
| CN113684728A (en) * | 2021-07-27 | 2021-11-23 | 台州大华铁路材料有限公司 | Polyurethane-ballast bed damping system |
| CN114086434A (en) * | 2021-11-29 | 2022-02-25 | 中铁第四勘察设计院集团有限公司 | Longitudinally-assembled prefabricated plate type track |
-
2020
- 2020-01-21 CN CN202020139774.3U patent/CN211713525U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111218858A (en) * | 2020-02-10 | 2020-06-02 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Close-fitting type elastic curing track system |
| CN111218858B (en) * | 2020-02-10 | 2021-09-10 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Close-fitting type elastic curing track system |
| CN113684728A (en) * | 2021-07-27 | 2021-11-23 | 台州大华铁路材料有限公司 | Polyurethane-ballast bed damping system |
| CN113684728B (en) * | 2021-07-27 | 2022-12-27 | 台州大华铁路材料有限公司 | Polyurethane-ballast bed damping system |
| CN114086434A (en) * | 2021-11-29 | 2022-02-25 | 中铁第四勘察设计院集团有限公司 | Longitudinally-assembled prefabricated plate type track |
| CN114086434B (en) * | 2021-11-29 | 2023-11-28 | 中铁第四勘察设计院集团有限公司 | Prefabricated plate type rail longitudinally assembled |
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