CN111893819A - High-speed railway ballastless track dial-joint structure - Google Patents
High-speed railway ballastless track dial-joint structure Download PDFInfo
- Publication number
- CN111893819A CN111893819A CN202010701330.9A CN202010701330A CN111893819A CN 111893819 A CN111893819 A CN 111893819A CN 202010701330 A CN202010701330 A CN 202010701330A CN 111893819 A CN111893819 A CN 111893819A
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- Prior art keywords
- track
- ballastless track
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- line
- existing
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 21
- 230000007704 transition Effects 0.000 claims abstract description 21
- 241001669679 Eleotris Species 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 5
- 239000000872 buffer Substances 0.000 claims description 4
- 239000004746 geotextile Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 239000007853 buffer solution Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B33/00—Machines or devices for shifting tracks, with or without lifting, e.g. for aligning track, for shifting excavator track
-
- 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
- E01B2/00—General structure of permanent way
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Railway Tracks (AREA)
Abstract
A high-speed railway ballastless track shifting and connecting structure shortens the shifting and connecting foundation construction time to the greatest extent and lays a solid foundation for completely adjusting the shifting and connecting back to a straight line ballastless track in a skylight time after a station offline foundation defect. The ballastless track comprises a main track ballastless track and a ballasted track temporary line positioned on one side of the main track ballastless track. The ballasted track temporary line consists of a ballasted track bed and a sleeper, a transition section is arranged between the positive line ballastless track and the ballasted track temporary line and serves as a temporary line transition dial-up connection foundation, and the main body of the transition section is a reinforced concrete widened track bed poured on the outer side of the existing ballastless track bed; the transition section and the front part of the positive line ballastless track are of a track surface elevation lifting section in a certain length, an assembled rail bearing platform is fixedly arranged on the top surface of the existing ballastless track bed and the reinforced concrete widened track bed in the track surface elevation lifting section, the line rail is locked through the assembled rail bearing platform, the track surface is subjected to geometric shape and position arrangement, and line shifting connection is completed.
Description
Technical Field
The invention relates to rail transit, in particular to a high-speed railway ballastless track connecting structure.
Background
In order to thoroughly treat the basic diseases under the interior of a station, and not interrupt the main line travelling crane, and keep the whole line operation capacity unchanged, the double-line main line is required to be ensured to bypass the disease section in the station, and the station line is smoothly connected through the auxiliary line. According to the line shape of the temporary line plane, if 70m of positive line ballastless track conflicts with the position of the temporary line, to realize the dial-up connection, 70m of positive line ballastless track needs to be broken and the temporary line of the ballasted track needs to be built, the time consumption needs to be at least one working day, the requirement that the time of a skylight is 4.5 hours without interrupting the driving can not be met, meanwhile, the quality of the temporary line track at the section can not be ensured, and the running safety of the motor train unit can be met. The method only realizes the dial-up connection on the ballastless track main line and realizes the direct dial-up connection of the ballastless track of the main line of 70m of the high-speed railway on the premise of not interrupting the running, which is no precedent in China and even in the world.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a high-speed railway ballastless track shifting and connecting structure, which is used for shortening the construction time of a shifting and connecting foundation to the maximum extent, protecting the original ballastless track from being damaged and laying a solid foundation for thoroughly solving the problem that the ballastless track of a main track is shifted and connected back to the ballastless track of a main track in skylight time after a station offline foundation defect is thoroughly remedied.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a high-speed railway ballastless track connecting structure, which comprises a main track ballastless track and a ballasted track temporary line positioned on one side of the main track ballastless track, wherein the main track ballastless track comprises an existing ballastless track bed positioned on a supporting layer, and an existing double-block sleeper is fixedly arranged on the upper part of the existing double-block sleeper, and is characterized in that: the ballasted track temporary line consists of a ballasted track bed and a sleeper, a transition section is arranged between the positive line ballastless track and the ballasted track temporary line and serves as a temporary line transition dial-up connection foundation, and the main body of the transition section is a reinforced concrete widened track bed poured on the outer side of the existing ballastless track bed; the transition section and the front part of the positive line ballastless track are of a track surface elevation lifting section in a certain length, an assembled rail bearing platform is fixedly arranged on the top surface of the existing ballastless track bed and the reinforced concrete widened track bed in the track surface elevation lifting section, the line rail is locked through the assembled rail bearing platform, the track surface is subjected to geometric shape and position arrangement, and line shifting connection is completed.
The beneficial effects of the invention are mainly reflected in the following aspects:
firstly, the track splicing time is greatly shortened, the ballastless track splicing utilizes the skylight time before the splicing to construct a reinforced concrete widened track bed and an assembled rail bearing platform, the construction quality is ensured, and the track splicing can be completed in 4.5 hours;
secondly, the running safety of the motor train unit is ensured, the ballastless track is connected in a shifting mode, the problem of poor stability of the ballasted track in the initial stage is solved, and the stable state of the track required by the running of the motor train unit is effectively ensured;
thirdly, the transportation capacity of the high-speed trunk railway is guaranteed, the passing number of the high-speed train can be immediately realized after the dial-up connection is the same as that before the dial-up connection, the smoothness of the national trunk railway is guaranteed, people can smoothly go out, and the method has huge economic and social benefits. The dial-up scheme can save more than 4000 ten thousand yuan of direct engineering investment and bring good social benefit;
fourthly, conditions are created for quick return of the rectified positive line ballastless track, the ballastless track is not damaged by the shifting connection, repeated engineering is reduced, engineering investment is saved, time is saved for the shifting connection return of the rectified positive line, and the quality of the ballastless track is guaranteed.
Drawings
The specification includes the following seven drawings:
fig. 1 is a plan view of a high-speed railway ballastless track splicing structure of the invention;
FIG. 2 is a cross-sectional view taken along line I-I of FIG. 1;
FIG. 3 is a cross-sectional view taken along line II-II of FIG. 1;
FIG. 4 is a cross-sectional view taken along line III-III of FIG. 1;
FIG. 5 is a cross-sectional view taken along line IV-IV of FIG. 1;
FIG. 6 is a schematic structural diagram of an adjusting fastener used in a high-speed railway ballastless track coupling structure of the invention;
FIG. 7 is a top view of an adjusting fastener used in the coupling structure of the ballastless track of the high-speed railway of the invention;
the figures show the components and corresponding references: the track comprises a main track ballastless track 10, a supporting layer 11, an existing ballastless track bed 12, an existing double-block type sleeper 13, a main track rail 14, a ballast track temporary line 20, a ballast track bed 21, a sleeper 22, a temporary track rail 23, a reinforced concrete widened track bed 30, connecting steel bars 31, a geotextile isolation layer 32, a split rail bearing platform 40, fasteners 41, a base 42, connecting bolts 43, nuts 44, chemical anchor bolts 45, a first heightening base plate 46, a first buffer base plate 47, a second heightening base plate 48, a second buffer base plate 49 and a transition section L1Elevation lifting section L of rail surface2The height of the existing track surface is +/-0, and the height of the existing track surface is + H.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Referring to fig. 1 to 5, the high-speed railway ballastless track splicing structure of the invention includes a main track ballastless track 10 and a ballasted track temporary line 20 located at one side of the main track ballastless track. The track 10 comprises an existing ballastless track bed 12 on a supporting layer 11, on the upper part of which an existing double-block sleeper 13 is fixedly arranged. The ballasted track line 20 is composed of a ballasted track bed 21 and a sleeper 22, and a transition section L is arranged between the positive ballastless track 10 and the ballasted track line 201As a basis for transition of the toilet line, the transition section L1The main body of the ballast bed is a reinforced concrete widened track bed 30 poured outside the existing ballastless track bed 12. The transition section L1A rail surface elevation lifting section L with a certain length in front of the positive ballastless track 102The elevation lifting section L of the rail surface2The assembled rail bearing platform 40 is fixedly arranged on the top surface of the existing ballastless track bed 12 and/or reinforced concrete widened track bed 30, the temporary line steel rail 23 is locked through the assembled rail bearing platform 40, the geometric shape and position arrangement is carried out on the rail surface, and the temporary line poking connection is completed.
Referring to fig. 1, the ballastless track dial-joint utilizes the skylight time before dial-joint to construct a reinforced concrete widened track bed 30 and an assembled rail bearing platform 40, greatly shortens the track dial-joint time, enables the track dial-joint to be completed within 4.5 hours, and can ensure the construction quality. Through the connection of the ballastless tracks, the problem of poor stability of the ballasted tracks at the initial stage is solved, and the stable state of the tracks required by the running of the motor train unit is effectively ensured. The method creates conditions for fast dial-back of the rectified positive line ballastless track, the ballastless track dial-up connection does not damage the ballastless track bed, repeated engineering is reduced, engineering investment is saved, time is saved for dial-up line dial-back after the rectification is finished, and the quality of the ballastless track bed is ensured.
With reference to fig. 4 and 5, the transition section L1The surface milling processing is carried out on the road shoulder sealing layer on the outer side of the inner alignment line ballastless track 10, anchoring pins are implanted into the surface layer of the foundation bed in a drilling mode, connecting reinforcing steel bars 31 are implanted into the side face of the existing track structure in a drilling mode to reinforce the connection, and a geotextile isolation layer 32 is laid between the reinforced concrete widened track bed 30 and the side face of the existing ballastless track bed 12.
Referring to FIG. 1, the rail surface elevation section L2The height of the rail bottom of the transition section steel rail after the downhill is higher than the retaining shoulder of the existing double-block sleeper by not less than 5 mm. The assembled track bearing platform 40 is arranged between longitudinally adjacent double-block sleepers 13 on the existing ballastless track bed 12, mounting holes are drilled in the existing ballastless track bed 12 and the reinforced concrete widened track bed 30, and the assembled track bearing platform 40 is fixedly mounted on the top surface of the existing ballastless track bed 12 and/or the reinforced concrete widened track bed 30 through chemical anchor bolts 45. The drilling holes on the surface of the existing ballast bed are positionedWith ballastless track beds 12. The construction precision of the drilling is strictly controlled, and the drilling is ensured to meet the installation requirement of the assembled rail bearing platform 40.
Referring to fig. 6 and 7, the assembled rail bearing platform 40 includes a fastener 41, a base 42, a first height-adjusting base plate 46 and a second height-adjusting base plate 48, the rail is mounted on the base 42 through the fastener 41, the first height-adjusting base plate 46 and the second height-adjusting base plate 48 are disposed below the base 42, a fixing nut 44 is welded on the bottom surface of the first height-adjusting base plate 46, and a connecting bolt 43 penetrating through the base 42 and the first height-adjusting base plate 46 is connected with the nut 44. The chemical anchor bolts 45 pass through the first heightening base plate 46 and the second heightening base plate 48 to enter the mounting holes, and the assembled rail bearing platform 40 is anchored and mounted on the top surface of the existing ballastless track bed 12 and/or reinforced concrete widened track bed 30. A first buffer cushion plate 47 is arranged between the bottom surface of the first heightening cushion plate 46 and the top surface of the second heightening cushion plate 48, and a second buffer cushion plate 49 is arranged between the bottom surface of the second heightening cushion plate 48 and the top surface of the existing ballastless track bed 12 and/or reinforced concrete widened track bed 30.
The above description is only used for illustrating some principles of the high-speed railway ballastless track connecting and pulling structure, and the invention is not limited to the specific structure and the application range shown and described, so all the corresponding modifications and equivalents which can be utilized belong to the patent scope applied by the invention.
Claims (6)
1. A high-speed railway ballastless track connecting structure comprises a positive line ballastless track (10) and a ballasted track temporary line (20) positioned on one side of the positive line ballastless track; the track-erecting ballastless track (10) comprises an existing ballastless track bed (12) positioned on a supporting layer (11), and an existing double-block sleeper (13) is fixedly arranged at the upper part of the existing double-block sleeper, and is characterized in that: the ballasted track line (20) is composed of a ballasted track bed (21) and a sleeper (22), and a transition section (L) is arranged between the positive line ballastless track (10) and the ballasted track line (20)1) As a basis for transition of the toilet wire, the transition section (L)1) The main body of the ballast bed is a reinforced concrete widened track bed (30) poured outside the existing ballastless track bed (12); the transition section (L)1) A rail surface elevation lifting section (L) with a certain length in front of the main line ballastless track (10)2)，The rail surface elevation lifting section (L)2) An assembled rail bearing platform (40) is fixedly arranged on the top surface of the existing ballastless track bed (12) and/or reinforced concrete widened track bed (30), the temporary steel rail (23) is locked through the assembled rail bearing platform (40), the geometric arrangement of the rail surface is carried out, and the temporary wire poking connection is completed.
2. The structure of claim 1, wherein the structure comprises: the transition section (L)1) The surface milling processing is carried out on the road shoulder sealing layer on the outer side of the inner alignment line ballastless track (10), anchoring pins are implanted into the surface layer of the foundation bed in a drilling mode, connecting steel bars (31) are implanted into the side faces of the existing track structure in a drilling mode to strengthen connection, and a geotextile isolation layer (32) is laid between the reinforced concrete widened track bed (30) and the side faces of the existing ballastless track bed (12).
3. The structure of claim 1, wherein the structure comprises: the rail surface elevation lifting section (L)2) The height of the rail bottom of the transition section steel rail in the downslope is adjusted to be higher than the retaining shoulder of the existing double-block sleeper by an assembled rail bearing platform (40) and is not less than 5 mm.
4. The structure of claim 2, wherein the structure comprises: the assembled track bearing platform (40) is arranged between longitudinally adjacent existing double-block sleepers (13) on an existing ballastless track bed (12), mounting holes are drilled in the existing ballastless track bed (12) and the reinforced concrete widened track bed (30), and the assembled track bearing platform (40) is fixedly mounted on the top surface of the existing ballastless track bed (12) and/or the reinforced concrete widened track bed (30) through chemical anchor bolts (45).
5. The high-speed railway ballastless track connecting structure of claim 4, which is characterized in that: the assembled rail bearing platform (40) comprises a fastener (41), a base (42), a first heightening base plate (46) and a second heightening base plate (48), a steel rail is installed on the base (42) through the fastener (41), the first heightening base plate (46) and the second heightening base plate (48) are arranged below the base (42), a fixed nut (44) is welded on the bottom surface of the first heightening base plate (46), and a connecting bolt (43) penetrating through the base (42) and the first heightening base plate (46) is connected with the nut (44); and a chemical anchor bolt (45) penetrates through the first heightening base plate (46) and the second heightening base plate (48) to enter the mounting hole, and the assembled rail bearing platform (40) is anchored and mounted on the top surface of the existing ballastless track bed (12) and/or reinforced concrete widened track bed (30).
6. The structure of claim 5, wherein the structure comprises: a first buffer backing plate (47) is arranged between the bottom surface of the first heightening backing plate (46) and the top surface of the second heightening backing plate (48), and a second buffer backing plate (49) is arranged between the bottom surface of the second heightening backing plate (48) and the top surface of the existing ballastless track bed (12) and/or reinforced concrete widened track bed (30).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010701330.9A CN111893819A (en) | 2020-07-20 | 2020-07-20 | High-speed railway ballastless track dial-joint structure |
| PCT/CN2021/106763 WO2022017278A1 (en) | 2020-07-20 | 2021-07-16 | Ballastless track connection structure of high-speed railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010701330.9A CN111893819A (en) | 2020-07-20 | 2020-07-20 | High-speed railway ballastless track dial-joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111893819A true CN111893819A (en) | 2020-11-06 |
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ID=73190702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010701330.9A Pending CN111893819A (en) | 2020-07-20 | 2020-07-20 | High-speed railway ballastless track dial-joint structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111893819A (en) |
| WO (1) | WO2022017278A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022017278A1 (en) * | 2020-07-20 | 2022-01-27 | 中铁二院工程集团有限责任公司 | Ballastless track connection structure of high-speed railway |
| CN115198574A (en) * | 2022-08-10 | 2022-10-18 | 中铁六局集团有限公司 | Bearing structure of alloy steel plate track for shifting and connecting integrated ballast bed line and application thereof |
| CN115305754A (en) * | 2022-09-15 | 2022-11-08 | 中铁第四勘察设计院集团有限公司 | Construction method for simultaneous double-line splicing of ballast tracks of high-speed railway |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922008A (en) * | 2022-05-23 | 2022-08-19 | 中铁十五局集团有限公司 | Ballastless track high-speed railway roadbed reinforcement waterproof structure and construction method thereof |
| CN116227262B (en) * | 2022-12-12 | 2023-12-12 | 中国矿业大学 | Broadband dynamics fine simulation method for ballastless track of high-speed railway |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022017278A1 (en) * | 2020-07-20 | 2022-01-27 | 中铁二院工程集团有限责任公司 | Ballastless track connection structure of high-speed railway |
| CN115198574A (en) * | 2022-08-10 | 2022-10-18 | 中铁六局集团有限公司 | Bearing structure of alloy steel plate track for shifting and connecting integrated ballast bed line and application thereof |
| CN115198574B (en) * | 2022-08-10 | 2023-05-09 | 中铁六局集团有限公司 | Bearing structure of whole ballast bed line poking alloy steel plate track and application thereof |
| CN115305754A (en) * | 2022-09-15 | 2022-11-08 | 中铁第四勘察设计院集团有限公司 | Construction method for simultaneous double-line splicing of ballast tracks of high-speed railway |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022017278A1 (en) | 2022-01-27 |
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