CN115491933A - Large-adjustment-amount track structure and construction method and maintenance method thereof - Google Patents
Large-adjustment-amount track structure and construction method and maintenance method thereof Download PDFInfo
- Publication number
- CN115491933A CN115491933A CN202211185732.3A CN202211185732A CN115491933A CN 115491933 A CN115491933 A CN 115491933A CN 202211185732 A CN202211185732 A CN 202211185732A CN 115491933 A CN115491933 A CN 115491933A
- Authority
- CN
- China
- Prior art keywords
- track
- adjustment
- self
- layer
- adjusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- 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
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
-
- 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
Landscapes
- 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 relates to a large-adjustment-amount track structure suitable for a movable fracture zone, which comprises a base plate, a self-compacting concrete layer and a track plate, wherein a steel rail structure is installed on the track plate, a plurality of threaded sleeves are pre-embedded in the track plate, and the axes of the threaded sleeves are parallel to the vertical direction and penetrate through the two ends of the top and the bottom of the track plate. In addition, the construction method and the maintenance method of the large-adjustment-amount track structure are also related. According to the invention, the plurality of threaded sleeves are pre-embedded on the track slab, and when the adjusting screw is matched with the threaded sleeves, the track slab can be conveniently and quickly lifted, so that the deformation adjustment operation of the track structure is facilitated, and the effect and efficiency of the adjustment of the track structure are improved; meanwhile, the threaded sleeve can also play a role in the construction process of the track structure, so that the construction of the track structure is facilitated, and equipment required by the construction of the track structure is reduced.
Description
Technical Field
The invention belongs to the technical field of rail traffic engineering, and particularly relates to a large-adjustment-amount rail structure suitable for a movable fracture zone, and a construction method and a maintenance method of the large-adjustment-amount rail structure.
Background
China is wide in territory, severe environment areas are widely distributed, fracture broken zones in partial areas are densely distributed, and the fracture broken zones cannot be avoided to cross when railway routes are selected. When the fault is dislocated, the lines are deformed to different degrees, so that the ballastless track is abnormal in geometric shape and position, and the track structure is reduced in functionality and durability due to the fact that the track structure is unsmooth in obvious direction, and the comfort and even the safety of the train are seriously influenced. Because the adjustment amount of the track fastener is limited, the ballastless track needs to be maintained in special modes such as lifting, deviation rectifying, dismantling, reconstruction and the like, but the conventional method has the defects of complex process, extremely high engineering cost and low later maintenance efficiency. Chinese patent CN213358156U discloses a movable fault section adjustable track system, which includes a trapezoidal sleeper arranged on a track bed and is configured with a sleeper vertical direction adjusting device, a sleeper transverse direction adjusting device and a sleeper longitudinal direction adjusting device, but the assembled track structure has poor stability and small adjustment amount. Chinese patent CN12247672U discloses an assembled ballastless track convenient for adjustment, which has a single adjustment direction, and poor stability and maintainability.
Disclosure of Invention
The invention relates to a large-adjustment track structure suitable for a movable fracture zone, and a construction method and a maintenance method of the large-adjustment track structure, which can at least solve part of defects in the prior art.
The invention relates to a large-adjustment-amount track structure suitable for a movable fracture zone, which comprises a base plate, a self-compacting concrete layer and a track plate, wherein a steel rail structure is installed on the track plate, a plurality of threaded sleeves are pre-embedded in the track plate, and the axes of the threaded sleeves are parallel to the vertical direction and penetrate through the two ends of the top and the bottom of the track plate.
In one embodiment, the rail structure comprises two rows of rail grooves and two rails mounted on the two rows of rail grooves, and the threaded sleeves are distributed in the two rows of rail grooves.
In one embodiment, the threaded sleeves on each side of the center line of the rail are sequentially arranged along the longitudinal direction of the rail and are distributed on two lateral sides of the rail on the corresponding side in a staggered manner.
As one embodiment, at least one vertical adjusting pad is sandwiched between the self-compacting concrete layer and the track slab.
In one embodiment, the vertical adjustment pad is designed to be blocked in the transverse direction of the rail.
As one embodiment, a limiting boss is formed at the top of the self-compacting concrete layer, a limiting hole is correspondingly formed in the track plate, the limiting boss extends into the limiting hole, a transverse gap between the limiting boss and the limiting hole is filled by a transverse adjusting layer, and/or a longitudinal gap between the limiting boss and the limiting hole is filled by a longitudinal adjusting layer.
In one embodiment, the lateral adjustment layer comprises at least one lateral adjustment pad, and when there are a plurality of lateral adjustment pads, the lateral adjustment pads of the lateral adjustment layer are sequentially overlapped in the lateral direction of the rail.
As an embodiment, the longitudinal adjustment layer is a resin layer that is cast-molded in the corresponding longitudinal gap.
The invention also relates to a construction method of the large-adjustment-amount track structure, which comprises the following steps:
s1, constructing a base plate;
s2, installing a steel bar welding net of a self-compacting concrete layer on the base plate;
s3, roughly paving and finely adjusting the track slab; after the track slab is accurately adjusted in place, self-compacting concrete is poured to form a self-compacting concrete layer;
and S4, laying steel rails.
The invention also relates to a maintenance method of the large-adjustment-amount track structure, which comprises the following steps:
when the rail structure needs to be vertically adjusted, firstly, steel rail fasteners in a corresponding range are loosened, adjusting screws are matched with threaded sleeves, the rail plate is lifted by screwing the adjusting screws, the rail plate is lifted by grouting or additionally paving a vertical adjusting base plate above a self-compacting concrete layer, and the rail plate is lowered and adjusted by removing the original self-compacting concrete layer and then applying a new self-compacting concrete layer or extracting the vertical adjusting base plate;
when the self-compacting concrete layer needs to be replaced, the steel rail fasteners in the corresponding range are loosened firstly, the adjusting screws are matched with the threaded sleeves, the track plate is lifted up by screwing the adjusting screws, and the new self-compacting concrete layer is constructed after the original self-compacting concrete layer is removed.
The invention has at least the following beneficial effects: according to the invention, the plurality of threaded sleeves are pre-embedded on the track slab, and when the adjusting screw is matched with the threaded sleeves, the track slab can be conveniently and quickly lifted, so that the deformation adjustment operation of the track structure is facilitated, and the effect and efficiency of the adjustment of the track structure are improved; meanwhile, the threaded sleeve can also play a role in the construction process of the track structure, so that the construction of the track structure is facilitated, and equipment required by the construction of the track structure is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a large adjustment track structure according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
fig. 3 is a schematic structural diagram of a track slab according to an embodiment of the present invention;
fig. 4 is a schematic view of the self-compacting concrete layer and the base plate according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 and 2, the embodiment of the invention provides a large-adjustment-amount track structure suitable for a movable fracture zone, which comprises a base plate 3, a self-compacting concrete layer 2 and a track plate 1, wherein a steel rail structure is installed on the track plate 1, a plurality of threaded sleeves 12 are embedded in the track plate 1, and the axes of the threaded sleeves 12 are parallel to the vertical direction and penetrate through the top and bottom ends of the track plate 1.
The bed plate 3 is located above the offline foundation, and can transmit train loads to the offline foundation, which is generally a reinforced concrete structure, and is preferably constructed by cast-in-place molding.
Preferably, a geotextile isolation layer is arranged between the base plate 3 and the self-compacting concrete layer 2, so that the isolation and buffering effects can be achieved; an isolation layer can be arranged between the self-compacting concrete layer 2 and the track slab 1, and the self-compacting concrete layer 2 and the track slab 1 can be conveniently disassembled in the maintenance process.
In one embodiment, the track slab 1 is a prefabricated slab; preferably, the track slab 1 has a concrete grade of C40 when the common reinforced concrete structure is adopted, and the track slab 1 has a concrete grade of C60 when the prestressed reinforced concrete structure is adopted.
In one embodiment, the rail structure includes two rows of rail bearing grooves 11 and two rails 4 mounted on the two rows of rail bearing grooves 11, and the mounting structure of the rail bearing grooves 11 and the rails 4 is conventional in the art and will not be described herein.
In one embodiment, as shown in fig. 1 to 4, a limiting boss 21 is formed at the top of the self-compacting concrete layer 2, a limiting hole 13 is correspondingly formed on the track plate 1, and the limiting boss 21 extends into the limiting hole 13; wherein, preferably, the specification of spacing boss 21 is less than the specification of spacing hole 13, for example, above-mentioned spacing boss 21 preferably is square boss, above-mentioned spacing hole 13 is square hole, the length of spacing hole 13 is greater than the length of spacing boss 21, the width of spacing hole 13 is greater than the width of spacing boss 21 to have horizontal clearance and longitudinal clearance between spacing boss 21 and the spacing hole pore wall, be convenient for realize the horizontal adjustment and the longitudinal adjustment of track board 1. The transverse gap between the limiting boss 21 and the limiting hole 13 is filled by a transverse adjusting layer 6, and/or the longitudinal gap between the limiting boss 21 and the limiting hole 13 is filled by a longitudinal adjusting layer 7.
In the above structure, when the track slab 1 needs to be adjusted in the transverse direction, the thickness of the transverse adjustment layer 6 may be adjusted, and when the track slab 1 needs to be adjusted in the longitudinal direction, the thickness of the longitudinal adjustment layer 7 may be adjusted. In one embodiment, the lateral adjustment layer 6 comprises at least one lateral adjustment pad 61, and when there are a plurality of lateral adjustment pads 61, the lateral adjustment pads 61 of the lateral adjustment layer 6 are overlapped in turn along the track lateral direction; the transverse adjusting shim plate 61 is preferably made of stainless steel plate, and transverse adjusting shim plates 61 with different thicknesses can be configured for the track structure, and transverse adjustment can be realized by replacing the transverse adjusting shim plates 61 with different thicknesses, for example, transverse adjusting shim plates 61 with thicknesses of 10mm, 20mm and 30mm are configured for the track structure, and each transverse adjusting shim plate 61 can have multiple blocks, so that replacement is convenient or combination of multiple transverse adjusting shim plates 61 is performed. Further preferably, the lateral adjustment layer 6 further includes a rubber pad 62, one surface of the rubber pad 62 is attached to the wall of the adjacent limiting hole, and the other surface of the rubber pad 62 is attached to the lateral adjustment pad 61, and the rubber pad 62 is configured to enable the force between the limiting boss 21 and the limiting hole 13 to be uniform, so as to prevent stress concentration.
Preferably, the two transverse sides of the limiting boss 21 are respectively provided with a transverse gap, and correspondingly, the two transverse gaps are respectively provided with a transverse adjusting layer 6, so that the accuracy and the reliability of the transverse adjustment of the track structure can be improved; when the lateral gap narrowing/lateral adjustment layer 6 on one side becomes thin, the lateral gap widening/lateral adjustment layer 6 on the other side becomes thick.
In one embodiment, the longitudinal adjustment layer 7 is a resin layer that is cast into the corresponding longitudinal gap. The rigidity of the resin layer is small, so that the stress between the limiting boss 21 and the limiting hole 13 is uniform; when the rail structure needs to be longitudinally adjusted, the rail structure can be realized by removing the original resin layer and then pouring the resin layer again. Longitudinal gaps are preferably formed in the longitudinal two sides of the limiting boss 21 respectively, and correspondingly, the longitudinal adjusting layers 7 are arranged in the two longitudinal gaps respectively, so that the accuracy and the reliability of the longitudinal adjustment of the track structure can be improved; when the longitudinal gap narrowing/longitudinal adjustment layer 7 on one side becomes thin, the longitudinal gap widening/longitudinal adjustment layer 7 on the other side becomes thick.
The number of the limiting bosses 21 is preferably multiple, and the number of the limiting holes 13 is configured accordingly, so that on one hand, the accuracy of adjusting the track structure orientation can be improved, and on the other hand, the transverse/longitudinal adjustment of the track slab 1 in a corresponding range is facilitated.
Preferably, when the track slab 1 is reinforced, the arrangement of the reinforcing steel bars around the limiting hole 13 is enhanced, so that the bearing capacity of the wall of the limiting hole and the concrete around the limiting hole can be improved.
Based on above-mentioned structure, spacing hole 13 can be used for pouring of self-compaction concrete, the construction of the self-compaction concrete layer 2 of being convenient for. Particularly, after the transverse adjusting layer 6 and the longitudinal adjusting layer 7 are fixed on the wall of the limiting hole of the track slab 1 in advance, self-compacting concrete is poured through the limiting hole 13, so that the limiting hole 13 and the limiting boss 21 formed by post-pouring can be reliably coupled, the structural integrity, the stability and the operation safety of the track structure are obviously improved, and the construction is very convenient.
Further preferably, the top end of the limiting boss 21 is higher than the top surface of the track slab 1 by a certain height, so that when the track slab 1 is lifted due to vertical adjustment, the limiting boss 21 can still play a limiting role.
Further preferably, as shown in fig. 2 and 4, at least one limiting groove 31 is formed in the top of the base plate 3, and when the self-compacting concrete layer 2 is poured, the self-compacting concrete simultaneously fills each limiting groove 31, so that the structural integrity, stability and operational safety of the track structure can be further improved.
In one embodiment, at least one vertical adjusting base plate 5 is sandwiched between the self-compacting concrete layer 2 and the track slab 1. Wherein, preferably, vertical adjustment backing plate 5 adopts the rubber material, has the function of damping and leveling. By increasing or decreasing the number of the vertical adjusting backing plates 5 or replacing the vertical adjusting backing plates 5 with different thicknesses, various vertical adjusting requirements of the track structure can be met. In this embodiment, a plurality of vertical adjusting shim plates 5 with different thicknesses are configured for the track structure, for example, the thicknesses are 10mm, 20mm, 30mm, and other specifications.
Further preferably, the vertical adjusting shim plate 5 is designed in a partitioning manner in the transverse direction of the rail, for example, the vertical adjusting shim plate 5 comprises a left shim plate partition and a right shim plate partition, which can be spliced to form a vertical adjusting shim plate 5 with a predetermined specification; based on this design, can follow the side and take out and trade the backing plate piecemeal and realize vertical adjustment, the simple operation nature, reliability height.
In the embodiment, the plurality of threaded sleeves 12 are embedded in the track slab 1, and when the adjusting screw 81 is matched with the threaded sleeves, the track slab 1 can be conveniently and quickly lifted, so that the deformation adjustment operation of the track structure is facilitated, and the effect and the efficiency of the adjustment of the track structure are improved; meanwhile, the threaded sleeve 12 can also play a role in the construction process of the track structure, so that the construction of the track structure is facilitated, and equipment required by the construction of the track structure is reduced.
Preferably, as shown in fig. 1 to 3, each of the threaded sleeves 12 is distributed in two rows of the rail grooves 11, and the threaded sleeves 12 are arranged by using the existing space of the track plate 1, so that no adverse interference is caused to the use of the track plate 1. In one embodiment, as shown in fig. 1-3, the threaded sleeves 12 on each side of the track centerline are sequentially arranged along the longitudinal direction of the track and are staggered on both lateral sides of the corresponding side rail 4; wherein, the track central line is the central line of the track plate 1, and the two rows of rail bearing grooves 11/two steel rails 4 are symmetrically arranged relative to the track central line; for each threaded sleeve 12 on each side, the threaded sleeves 12 are distributed in a staggered manner, part of the threaded sleeves 12 are close to the center line of the track (defined as first threaded sleeves), the rest of the threaded sleeves 12 are close to the edge of the track (defined as second threaded sleeves), a second threaded sleeve is arranged between every two adjacent first threaded sleeves, and a first threaded sleeve is arranged between every two adjacent second threaded sleeves; preferably, the line connecting the centers of the top ends of the threaded sleeves 12 is in a sawtooth waveform (the wave crest is close to the middle line of the track, and the wave trough is close to the edge of the track). The threaded sleeves 12 are arranged in a staggered mode, so that the bearing capacity can be prevented from being influenced by the fact that too many holes exist in one longitudinal section of the track plate 1, and meanwhile, the arrangement mode can effectively improve the stability and the reliability of the adjustment of the track plate 1.
Example two
The embodiment of the invention provides a construction method of the large-adjustment-amount track structure, which comprises the following steps:
s1, constructing a base plate 3; wherein, the base plate 3 is preferably cast in situ; for the case that the base plate 3 is provided with the limiting groove 31, correspondingly, the limiting groove 31 is formed by erecting the mold when the base plate 3 is poured; for the case of arranging the geotextile isolation layer, the geotextile isolation layer is laid after the base plate 3 is formed;
s2, installing a steel bar welding net of the self-compacting concrete layer 2 on the base plate 3; preferably, after the strength of the base concrete reaches 75% of the design strength, the base plate 3 and the limiting groove 31 are cleaned, the geotextile isolating layer is laid, and then the reinforcing steel bar welding net is installed;
s3, roughly paving and finely adjusting the track slab 1; after the track slab 1 is finely adjusted in place, self-compacting concrete is poured to form a self-compacting concrete layer 2;
when the facilities are paved on the track structure site, the threaded sleeve 12 embedded in the track slab 1 is matched with the lifting device 8, and the functions of supporting the track slab 1 and finely adjusting the position of the track slab 1 can be achieved. The specific operation is as follows: the track slab 1 is roughly paved and positioned on site, and the adjusting screws 81 are matched with the threaded sleeves 12, so that the track slab 1 can be supported, and the elevation position (for example, the elevation position is lifted up or lowered down) of the track slab 1 can be adjusted by screwing the adjusting screws 81, so that the function of precisely adjusting the position of the track slab 1 can be achieved; after the track plate 1 is adjusted to a proper position, a supporting block is arranged below the track plate 1 to support the track plate 1, and meanwhile, the lifting device 8 is taken out, so that the vertical fine adjustment of the track plate 1 in the construction process is realized.
Further, when the self-compacting concrete layer 2 is poured, the bottom end of each threaded sleeve 12 is blocked in advance to prevent the self-compacting concrete from entering the threaded sleeve 12. Optionally, the threaded sleeve 12 may be plugged by the adjusting screw 81, that is, when the self-compacting concrete layer 2 is poured, the adjusting screw 81 is not taken out temporarily, and before the self-compacting concrete is solidified, the adjusting screw 81 is screwed out.
Preferably, a transverse adjusting layer 6, a longitudinal adjusting layer 7 and a vertical adjusting base plate 5 are installed and fixed on the track slab 1 in advance, and then the self-compacting concrete layer 2 is poured.
Preferably, after the base plate 3 is poured, the track plate 1 is finely adjusted and meets the design elevation, the templates are arranged around, and the self-compacting concrete is poured through the limiting holes 13 on the track plate 1.
And S4, laying steel rails 4.
EXAMPLE III
The embodiment of the invention provides a maintenance method of the large-adjustment-amount track structure, which comprises the following steps:
when the vertical adjustment of the track structure is needed, the steel rail fasteners in the corresponding range are firstly loosened, the adjusting screws 81 are matched with the threaded sleeves 12, the track plate 1 is lifted by screwing the adjusting screws 81, the mode of grouting above the self-compacting concrete layer 2 or additionally paving the vertical adjusting base plate 5 is adopted to realize the lifting adjustment of the track plate 1, and the mode of applying a new self-compacting concrete layer 2 or extracting the vertical adjusting base plate 5 after removing the original self-compacting concrete layer 2 is adopted to realize the reduction adjustment of the track plate 1. When the lateral adjustment layer 6 and the longitudinal adjustment layer 7 are included, the lateral adjustment layer 6 and the longitudinal adjustment layer 7 are removed before the adjustment screw 81 is operated, and after the adjustment is performed, the lateral adjustment layer 6 and the resin injection layer are reinstalled.
When the self-compacting concrete layer 2 needs to be replaced, the steel rail fasteners in the corresponding range are loosened firstly, the adjusting screws 81 are matched with the threaded sleeves 12, the track plate 1 is lifted by screwing the adjusting screws 81, and after the original self-compacting concrete layer 2 is removed, a new self-compacting concrete layer 2 is constructed (including the steel bar welding net of the self-compacting concrete layer 2 is installed again, and then the self-compacting concrete is poured). Similarly, when the lateral adjustment layer 6 and the longitudinal adjustment layer 7 are included, the lateral adjustment layer 6 and the longitudinal adjustment layer 7 are removed before the adjustment screw 81 is operated, and after the adjustment is made, the lateral adjustment layer 6 and the resin-impregnated layer are remounted.
In another embodiment, when the track structure needs to be transversely adjusted, the steel rail fasteners in the corresponding range are loosened, the original transverse adjusting layer 6 and the original longitudinal adjusting layer 7 are removed, and then the track slab 1 is transversely adjusted; after the adjustment is in place, the transverse adjusting layer 6 and the resin pouring layer are installed in a matched mode again.
In another embodiment, when the rail structure needs to be longitudinally adjusted, the rail fasteners in the corresponding range are loosened, the original transverse adjusting layer 6 and the original longitudinal adjusting layer 7 are removed, and then the rail plate 1 is longitudinally adjusted; after the adjustment is in place, the transverse adjusting layer 6 and the resin pouring layer are installed in a matched mode again.
Preferably, as shown in fig. 2 and 3, the adjusting screw 81 is further provided with a supporting sleeve 82, the supporting sleeve 82 can be put into the bottom of the threaded sleeve 12, and then the adjusting screw 81 is screwed down, and when the bottom end of the adjusting screw 81 is inserted into the supporting sleeve 82, the adjusting screw 81 is not lowered. The support sleeve 82 can protect the vertical adjusting base plate 5, the base plate 3 and the like, and can improve the lifting precision of the track plate 1. Correspondingly, the adjusting screw 81 adopts a stepped shaft structure with a wide upper part and a narrow lower part, and a lower rod section with a smaller diameter is matched with the supporting sleeve 82, and a light rod section can be adopted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a big adjustment volume track structure suitable for activity fracture area, includes bed plate, self-compaction concrete layer and track board install rail structure, its characterized in that on the track board: a plurality of threaded sleeves are pre-embedded in the track plate, and the axes of the threaded sleeves are parallel to the vertical direction and penetrate through the two ends of the top and the bottom of the track plate.
2. The large-adjustment-amount track structure according to claim 1, wherein: the steel rail structure comprises two rows of rail bearing grooves and two steel rails arranged on the two rows of rail bearing grooves, and the threaded sleeves are distributed in the two rows of rail bearing grooves.
3. The large adjustment track structure according to claim 2, wherein: the thread bushings on each side of the midline of the track are sequentially arranged along the longitudinal direction of the track and are distributed on the two transverse sides of the steel rail on the corresponding side in a staggered manner.
4. The large adjustment track structure according to claim 1, wherein: at least one vertical adjusting base plate is clamped between the self-compacting concrete layer and the track slab.
5. The large-adjustment-amount track structure according to claim 4, wherein: the vertical adjusting backing plate is designed in a blocking mode in the transverse direction of the track.
6. The large adjustment track structure according to claim 1, wherein: the top on self-compaction concrete layer is formed with spacing boss, spacing hole has been seted up on the track board correspondingly, spacing boss stretch into to in the spacing hole, spacing boss with horizontal clearance between the spacing hole is filled through the transverse adjustment layer, and/or spacing boss with longitudinal gap between the spacing hole is filled through the longitudinal adjustment layer.
7. The large adjustment track structure according to claim 6, wherein: the transverse adjusting layer comprises at least one transverse adjusting backing plate, and when a plurality of transverse adjusting backing plates are arranged, all the transverse adjusting backing plates of the transverse adjusting layer are overlapped in sequence along the transverse direction of the track.
8. The large adjustment track structure according to claim 6, wherein: the longitudinal adjusting layer is a resin layer which is poured and molded in the corresponding longitudinal gap.
9. The construction method of a large adjustment amount track structure according to any one of claims 1 to 8, comprising:
s1, constructing a base plate;
s2, installing a steel bar welding net of a self-compacting concrete layer on the base plate;
s3, roughly paving and finely adjusting the track slab; after the track slab is accurately adjusted in place, self-compacting concrete is poured to form a self-compacting concrete layer;
and S4, laying steel rails.
10. The maintenance method of a large adjustment amount track structure according to any one of claims 1 to 8, comprising:
when the rail structure needs to be vertically adjusted, firstly, steel rail fasteners in a corresponding range are loosened, adjusting screws are matched with threaded sleeves, the rail plate is lifted by screwing the adjusting screws, the rail plate is lifted by grouting or additionally paving a vertical adjusting base plate above a self-compacting concrete layer, and the rail plate is lowered and adjusted by removing the original self-compacting concrete layer and then applying a new self-compacting concrete layer or extracting the vertical adjusting base plate;
when the self-compacting concrete layer needs to be replaced, firstly, steel rail fasteners in a corresponding range are loosened, adjusting screws are adopted to be matched with the threaded sleeves, the track slab is lifted by screwing the adjusting screws, and after the original self-compacting concrete layer is removed, a new self-compacting concrete layer is constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211185732.3A CN115491933A (en) | 2022-09-27 | 2022-09-27 | Large-adjustment-amount track structure and construction method and maintenance method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211185732.3A CN115491933A (en) | 2022-09-27 | 2022-09-27 | Large-adjustment-amount track structure and construction method and maintenance method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115491933A true CN115491933A (en) | 2022-12-20 |
Family
ID=84471537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211185732.3A Pending CN115491933A (en) | 2022-09-27 | 2022-09-27 | Large-adjustment-amount track structure and construction method and maintenance method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115491933A (en) |
-
2022
- 2022-09-27 CN CN202211185732.3A patent/CN115491933A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218478970U (en) | Large-adjustment-quantity plate type ballastless track structure | |
| KR101052906B1 (en) | Precast slab track system and method constructing the same | |
| CN112941975B (en) | Combined track slab, prefabricated slab track system and installation and construction method thereof | |
| CN202055116U (en) | Prefabricated slab type ballastless track structure | |
| CN102182120A (en) | Precast slab type ballastless track structure | |
| EP1700954A2 (en) | Prefabricated modular member, permanent railway for tramways and subways including said member, and process for laying the same | |
| CN101798785A (en) | Ballastless track structure | |
| CN111827138B (en) | Construction method for replacing disc type support of plate type support in rail transit | |
| CN218373028U (en) | Plate type adjustable track structure | |
| JP4934779B2 (en) | Boarding / exit structure and boarding / exiting method | |
| CN217078222U (en) | Assembled ballastless track based on dry-type connection | |
| CN218373029U (en) | Novel plate-type ballastless track structure | |
| CN205329433U (en) | Maintain convenient embedded track structure | |
| CN106638172B (en) | A kind of rail support groove adjuster | |
| CN103821061B (en) | Traction runway for automobile safety crash laboratory and layered construction method thereof | |
| CN105463955A (en) | Embedded track structure convenient to maintain | |
| KR102276570B1 (en) | Lower part separating type mold for constructing embedded rail track | |
| CN115491933A (en) | Large-adjustment-amount track structure and construction method and maintenance method thereof | |
| KR20130009391A (en) | Method for manufacturing concrete block for railway track and method for laying railway track using concrete block manufactured by the same method | |
| CN206581083U (en) | A kind of rail support groove adjuster | |
| CN203795264U (en) | Traction track for vehicle safety crash test room | |
| CN115387164A (en) | Reliably-operated plate-type ballastless track structure and construction method and adjustment method thereof | |
| RU2352705C1 (en) | Method for installation of permanent way | |
| CN219137267U (en) | Ballastless track structure easy to adjust | |
| Simon et al. | A composite dowel bridge in the Czech Republic: Development, optimization and implementation of a railway bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |