CN107190584B - Assembled limiting structure for ballastless track and ballastless track with same - Google Patents
Assembled limiting structure for ballastless track and ballastless track with same Download PDFInfo
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- CN107190584B CN107190584B CN201710557865.1A CN201710557865A CN107190584B CN 107190584 B CN107190584 B CN 107190584B CN 201710557865 A CN201710557865 A CN 201710557865A CN 107190584 B CN107190584 B CN 107190584B
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- limiting
- holes
- track
- hole
- teeth
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- 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
- E01B1/007—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with interlocking means to withstand horizontal forces
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
Abstract
The invention discloses an assembled limiting structure for a ballastless track, which comprises: the limiting body is provided with a groove on one end surface opposite to the two end surfaces; the first limiting hole is used for nesting one end of the limiting body; the second limiting hole is used for inserting the other end of the limiting body; and the limiting teeth are used for being matched with the grooves when one end of the limiting body is inserted into the limiting teeth, bolt holes are formed in the limiting teeth, and the limiting body can be communicated with the through holes in the limiting body when inserted into the second limiting hole, so that the bolts can penetrate through the through holes and then are connected to fix the limiting body on the base, and the limiting of the track plate is realized through the matching of the limiting body and the first limiting hole. The invention also discloses the ballastless track with the limiting structure. The invention can realize the detachable limit of the track slab through the optimized structural improvement, not only limit the stress deformation to meet the requirement, but also be very convenient for the follow-up disassembly and maintenance of the track slab.
Description
Technical Field
The invention belongs to the technical field of ballastless tracks, and particularly relates to an assembled limiting structure for a ballastless track and a ballastless track with the same.
Background
The ballastless track is a track structure which adopts integral foundations such as concrete, asphalt mixture and the like to replace a loose gravel track bed. Compared with a ballast track, the ballastless track avoids the splashing of the ballast, has good smoothness, good stability, long service life, good durability and less maintenance work, and is applied more and more.
The slab ballastless track structure mainly relates to structures such as a track slab, an asphalt mortar or self-compacting concrete filling layer, a base or a supporting layer and the like, wherein the base or the supporting layer adopts a concrete structure, and the asphalt mortar or the self-compacting concrete filling layer laid on the base or the supporting layer is a structural layer for adjusting and supporting the force transmission of the ballastless track structure. At present, the types of plate-type ballastless tracks in China mainly comprise CRTS I type plate type, CRTS II type plate type and CRTS III type plate-type ballastless tracks. CRTS I type slab ballastless track is a unit slab, does not longitudinally connect between slabs, does not establish a transverse stop block, is laid on a cast-in-place reinforced concrete base with a convex block platform, and is limited by the convex block platform. The CRTS II type slab ballastless track slab is longitudinally connected with the slab, a longitudinally connecting structure is formed by longitudinally finely-rolled thread steel bars and a tensioning locking piece, and a transverse stop block is arranged. A limiting mode that square bosses (or grooves) are respectively arranged on two sides of a self-compacting concrete layer is adopted between a self-compacting concrete filling layer of a CRTS III slab ballastless track and a base. For example, patent document CN105200868a discloses a prefabricated slab ballastless track structure, in which a limiting structure is disclosed, in which a track slab is in a form of a middle hollow frame (through hole), a limiting boss is provided on a base corresponding to the middle through hole of the prefabricated track slab, and the limiting boss is single or multiple, and is used for limiting the track slab in a transverse direction and a longitudinal direction.
The plate-type ballastless track type limiting mode is poor in detachability, and once the track plate is damaged, the maintenance is very inconvenient; in addition, the limiting structure has defects in stress and deformation requirements. Therefore, a limiting structure of the assembled ballastless track needs to be designed to solve the problem that the limiting structure of the existing slab ballastless track limits the track slab, so that maintenance is inconvenient, and the stress deformation requirement of the existing limiting structure is improved.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides an assembly type limiting structure for a ballastless track, which is characterized in that grooves are formed in the side edge of a track plate and a base through optimized structural improvement, and a detachable limiting block is assembled, so that the detachable limiting of the track plate can be realized, the limiting stress deformation can meet the requirements, and the follow-up dismounting and maintenance of the track plate are very convenient.
In order to achieve the above object, according to one aspect of the present invention, there is provided an assembled limiting structure for a ballastless track, which is disposed between a track slab and a base thereof to limit the track slab and the base thereof, and is characterized in that the limiting structure includes:
the limiting body is provided with a through hole penetrating through the two opposite end faces, and one end face of the limiting body, which is opposite to the two end faces, is provided with a groove with a certain depth;
the first limiting hole is arranged on the track plate and matched with the outline of the limiting body so as to be used for nesting one end of the limiting body;
the second limiting hole is formed in the base, and the outline of the second limiting hole is matched with the outline of the limiting body so that the other end of the limiting body can be inserted into the second limiting hole; and
the limiting teeth are arranged at the bottoms of the second limiting holes and matched with the grooves in the end faces of the limiting bodies so that when one end of the limiting body is inserted into the limiting teeth, the limiting teeth can be matched with the grooves, bolt holes are formed in the limiting teeth, the limiting bodies can be communicated with the through holes in the limiting bodies when the limiting bodies are inserted into the second limiting holes, and therefore bolts can penetrate through the through holes and then are inserted into the bolt holes to be connected so as to detachably fix the limiting bodies on the base, and limiting of the track plate is achieved through matching of the limiting bodies and the first limiting holes.
As a further improvement of the invention, the limiting body can be in a cylindrical, cuboid, oblong or ellipsoid structure.
As a further improvement of the invention, the first limiting holes on the track plates are formed on the outer side edges of the two rails of the track plates and are positioned at the end parts of the connecting ends of the track plates, namely the first limiting holes are formed into 1/4 holes matched with the outline of the limiting body, and when the two track plates are butted, the first limiting holes at the corresponding end parts can be spliced to form a half-hole structure matched with the outline of the periphery of the limiting body, so that the two track plates can be limited after the limiting body is inserted into the half-hole structure.
As a further improvement of the invention, the number of the first limiting holes on each end of the track plates to be connected is two.
As a further improvement of the invention, the limiting teeth are strip-shaped blocks which are convexly arranged at the bottom of the second limiting hole.
As a further improvement of the invention, the number of the bolt holes formed on the limiting tooth is consistent with the number of the through holes penetrating through the two opposite end surfaces of the limiting body.
As a further improvement of the invention, a pre-buried sleeve is arranged in a bolt hole formed in the limiting tooth.
As a further improvement of the invention, the limiting body is a precast concrete block or a steel block.
According to another aspect of the invention, the assembled ballastless track with the limiting structure is provided.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
(1) In the limiting structure, the limiting body is connected with the bolt of the base to form detachable limiting connection, so that the limiting structure can be conveniently detached to realize detachable maintenance or replacement of the track slab;
(2) The limiting structure adopts the way that the track plate is provided with the limiting hole structure of which the hole wall outline is matched with the appearance outline of the limiting body structure, so that the limiting body is embedded and installed in the limiting hole structure, and the limiting body is fixed on the base, thereby reliably and stably controlling the transverse displacement and the longitudinal displacement of the track plate;
(3) The limiting structure can realize detachable limiting of the track slab, not only limit the stress deformation to meet the requirement, but also be very convenient for follow-up dismounting and maintenance of the track slab.
Drawings
Fig. 1 is a schematic partial exploded view of a limiting structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a first limiting hole of the limiting structure according to the embodiment of the present invention;
FIG. 3 is a schematic three-dimensional structure diagram of a second limiting hole of the limiting structure according to the embodiment of the invention;
fig. 4 is a schematic diagram of the limiting structure in the assembling application in the ballastless track according to the embodiment of the invention.
In all the figures, the same reference numerals denote the same features, in particular: 10-limiting body, 11-through hole, 12-limiting groove, 20-first limiting hole, 30-second limiting hole, 31-limiting tooth, 32-bolt hole and 33-embedded sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 is a schematic partial exploded view of a limiting structure according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a first limiting hole of the limiting structure according to the embodiment of the invention; FIG. 3 is a schematic three-dimensional structure diagram of a second limiting hole of the limiting structure according to the embodiment of the invention; fig. 4 is an exploded schematic view of a limiting structure in an assembly application in a ballastless track according to an embodiment of the present invention.
As shown in fig. 1, according to the detachable limiting structure for an assembled ballastless track of an embodiment of the present invention, the assembly is disposed between a track plate and a base thereof to limit the track plate and the base, that is, a prefabricated limiting structure is installed after the track plate is finely adjusted, and is inserted into the track plate and the base, so as to limit displacement of the track plate in the transverse direction and/or the longitudinal direction of the base.
Specifically, as shown in fig. 1 to 4, the limiting structure includes a limiting body 10, a first limiting hole 20, a second limiting hole 30 and a limiting tooth 31. As shown in fig. 1, the limiting body 10 may be a cylinder, a rectangular parallelepiped, an oblong or an ellipsoid structure, that is, the whole body is a long strip structure with a certain thickness, and the cross section may be a rectangle, an oblong, an ellipse or any other structural body that can be conveniently processed or assembled. The limiting body 10 can be made of precast concrete or a metal material such as steel.
As shown in fig. 1, the limiting body 10 is provided with a through hole (the upper and lower end surfaces of the limiting body 10 as shown in fig. 1) penetrating through the two opposite end surfaces for the fastening bolt 40 to pass through, and in addition, one end surface of the two opposite end surfaces of the limiting body 10 is provided with a groove with a certain depth (the lower end surface of the limiting body 10 as shown in fig. 1).
As shown in fig. 2, the first position-limiting hole 20 is a hole matching with the outer contour of the position-limiting body 10, and is used for the position-limiting body to be nested and installed therein, so that the two are matched and combined to limit the movement of the track plate.
The first limiting hole 20 is formed in the end face of the rail plate to be connected and is located on the side edge of the outer side of the two steel rails. As shown in FIG. 2, the first position-limiting hole 20 is a 1/4 hole matched with a part of the outline of the position-limiting body, i.e. the section of the first position-limiting hole is 1/4 of the outline of the whole periphery, and a half-hole structure can be formed when the two position-limiting holes are spliced. In particular, the cross-section of the first restraint aperture 20 is a partial shape that is not complete, preferably 1/4 of the entire cross-sectional shape, two such apertures may be symmetrically split into 1/2 of an aperture, and two such 1/2 of an aperture may be symmetrically split into a full cross-sectional aperture. The specific cross-sectional shape can be, for example, a circular 1/4, a rectangular 1/4, an oblong 1/4, or a semi-elliptical 1/4 structure, in this way, when the end portions of the two spliced track slabs are aligned, the corresponding first limiting holes 20 at the two sides of the end portions can be spliced to form a semi-hole cross section, that is, a hole structure with a cross section of 1/2 of a complete cross section is formed, and the two above-mentioned 1/2 hole structures can form the whole complete hole.
Of course, the first position-limiting hole 10 in this embodiment may have other dimensions, for example, the contour thereof may be 1/3,2/3 of the contour of the whole position-limiting body, or other dimension structures that can enable the position-limiting body 10 to be installed therein for limiting. The number of the first limiting holes 20 on each end surface can be one or more than two, preferably two, and the limiting effect is optimal, although the specific number can be determined according to the actual engineering requirements.
As shown in fig. 2, the first limiting hole 20 is preferably disposed at a longitudinal end face position of the unit plate, i.e. on a side near the longitudinal end face, for example, a side plate where the end face is located is provided with a hole whose outline is 1/4 of the outline of the whole complete hole, so that when the unit plate is connected with another unit plate, the holes at the same position of the end face can be combined to form a 1/2 outline hole, and of course, the hole outline of the end face can be provided with other sizes, and when the two unit plates are spliced, the two unit plates form a larger or smaller outline size, but no matter the outline size, the first limiting hole must ensure that the limiting effect can be exerted on the limiting body, and more preferably, the first limiting hole is matched with at least part of the outline of the periphery of the limiting body 10.
In this embodiment, the unit plates spliced to form the track are formed by connecting and combining a plurality of prefabricated base plates, for example, in one embodiment, two base plates connected with each other are provided with a convex part on one end surface and a concave part on the other end surface, and a joggle joint is formed when the two parts are spliced. More preferably, the surface height of the convex part and the concave part on the two end surfaces is higher than the surface height of the basic plate, furthermore, the surface of the convex part and the concave part or the transition part between the surface and the surface of the basic plate is provided with an opening which passes through the longitudinal end surfaces of the convex part and the concave part, preferably a bolt hole, and further, the two basic plates can be connected and fixed through bolts. The basic plates are connected in the above manner to form a unit plate, the end of the unit plate is provided with the above limiting hole structure, that is, only the corresponding first limiting holes 20 (for example, two holes are formed on each end face) are needed to be respectively arranged on the opposite end faces of the two unit plates, and the corresponding number of second limiting holes 30 (for example, two holes) are arranged on the base at the corresponding position, so that the splicing of the rails can be conveniently realized, and the stable and reliable limiting in the transverse direction and the longitudinal direction can be ensured.
In another embodiment, the first limiting hole 20 may also be a complete hole matching the outline of the limiting body completely, and its cross section is a complete cylinder, a rectangular parallelepiped, an oblong or an ellipsoid structure, etc., or other shapes matching the outer outline of the limiting body 10. The first limiting holes 20 are formed between two steel rails of the rail plate, the number of the first limiting holes can be one or more than two, and the specific number can be selected and determined according to actual engineering requirements.
As shown in fig. 3, a second stopper hole 30 is opened on the base for supporting the track plate, and its outer contour matches the contour of the stopper body 10 for inserting the other end of the stopper body 10 therein. Specifically, the limiting body 10 is also rectangular, oblong, or elliptical in cross section, or has another shape matching the outer contour of the limiting body 10, and preferably has a certain depth, which is determined according to the thickness of the limiting body and the thickness of the track plate and the base.
The bottom of the second limiting hole 30 is provided with a limiting tooth 31, which is matched with a groove on the end surface of the limiting body 10, so that when one end of the limiting body 10 is inserted into the groove, the limiting tooth 31 can be matched with the groove. The limiting teeth 31 are provided with bolt holes 32 and matched with through holes on the limiting body 10, and when the limiting body 10 is inserted into the second limiting hole 30, the limiting teeth can be communicated with the through holes on the limiting body 10 for the bolts 40 to pass through for connection, namely, the bolts 40 can pass through the through holes and then be inserted into the bolt holes 32 for connection so as to fix the limiting body 10 on the base. In this scheme, can the dismouting during bolted connection to can realize fixing spacing body 10 on the base dismantled and assembled, make things convenient for the maintenance to change.
One end of the limiting body 10 is inserted into the second limiting hole 30, the groove 12 on the end face of the limiting body is matched and clamped with the limiting tooth 31 arranged at the bottom of the second limiting hole 30, and the limiting body 10 can be reliably fixed by utilizing the bolt 40 for fixed connection. The other end of the limiting body 10 is arranged in the first limiting hole 20 on the track plate, so that the track plate can be limited by matching the limiting body 10 with the first limiting hole 20, including transverse limiting, longitudinal limiting, or transverse and longitudinal limiting.
In a preferred embodiment, the sleeve 11 can be embedded in the through hole of the limiting body 10, so as to facilitate the installation and connection of the bolt 40. Preferably, a sleeve 33 can be embedded in the bolt hole 32 in the second limiting hole 30 on the base.
When the limiting structure is applied to limiting operation, the prefabricated limiting block is installed after the track slab is finely adjusted, and the limiting block can be positioned at the slab end or in the slab; and fastening a limiting block by adopting bolts and a pre-embedded sleeve in the base. If the track slab is damaged and needs to be replaced, the anchor bolt is unscrewed, and the limiting block is detached.
It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.
Claims (6)
1. The utility model provides an assembled limit structure for ballastless track, sets up between track board and its base in order to carry on spacingly to both, its characterized in that, this limit structure includes:
the limiting body is provided with a through hole penetrating through the two opposite end faces, and one end face of the limiting body, which is opposite to the two end faces, is provided with a groove with a certain depth;
the first limiting holes are formed in the track plates and are matched with the outline of the limiting body so as to be used for nesting one end of the limiting body, the first limiting holes in the track plates are formed in the outer side edges of the two steel rails of the track plates and are positioned at the end part of the connecting end of the track plates, namely, the first limiting holes are formed into 1/4 holes matched with the outline of the limiting body, and the first limiting holes in the corresponding end parts of the two track plates can be spliced to form a half-hole structure matched with the outline of the periphery of the limiting body when the two track plates are butted so as to keep the two track plates limited after the limiting body is inserted into the half-hole structure;
the second limiting hole is formed in the base, and the outline of the second limiting hole is matched with the outline of the limiting body so that the other end of the limiting body can be inserted into the second limiting hole; and
the limiting teeth are arranged at the bottoms of the second limiting holes and matched with the grooves in the end faces of the limiting bodies so that when one end of the limiting body is inserted into the limiting teeth, the limiting teeth can be matched with the grooves, bolt holes are formed in the limiting teeth, the limiting bodies can be communicated with the through holes in the limiting bodies when the limiting bodies are inserted into the second limiting holes, therefore, bolts can penetrate through the through holes and then are inserted into the bolt holes to be connected, the limiting bodies can be detachably fixed on the base, the limiting of the track plate is achieved through the matching of the limiting bodies and the first limiting holes, the limiting teeth are strip-shaped blocks, the protruding parts of the limiting teeth are arranged at the bottoms of the second limiting holes, and the number of the bolt holes formed in the limiting teeth is consistent with the number of the through holes which are communicated with the two opposite end faces of the limiting bodies.
2. The fabricated limiting structure for the ballastless track of claim 1, wherein the limiting body can be a cylinder, a cuboid, an oblong or an ellipsoid structure.
3. The fabricated limiting structure for the ballastless track of claim 2, wherein the number of the first limiting holes on each end of the track slabs to be connected is two.
4. The assembled limiting structure for the ballastless track of claim 3, wherein a pre-buried sleeve is arranged in a bolt hole formed in the limiting tooth.
5. The fabricated limiting structure for the ballastless track of claim 4, wherein the limiting body is a precast concrete block or a steel block.
6. A ballastless track having the fabricated spacing structure of any one of claims 1 to 5.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557865.1A CN107190584B (en) | 2017-07-10 | 2017-07-10 | Assembled limiting structure for ballastless track and ballastless track with same |
| BR112020000527-4A BR112020000527B1 (en) | 2017-07-10 | 2018-06-14 | MOUNTED POSITIONING STRUCTURE ARRANGED BETWEEN A TRACK SLAB AND A BASE FOR POSITIONING THE TRACK SLAB AND THE BASE |
| PCT/CN2018/091272 WO2019011101A1 (en) | 2017-07-10 | 2018-06-14 | Ballastless track base plate connecting structure and ballastless track having same |
| IL271899A IL271899B2 (en) | 2017-07-10 | 2018-06-14 | Ballastless track base plate connecting structure and ballastless track having same |
| SG11202000212VA SG11202000212VA (en) | 2017-07-10 | 2018-06-14 | Ballastless track base plate connecting structure and ballastless track having same |
| PH12020500053A PH12020500053A1 (en) | 2017-07-10 | 2020-01-06 | Ballastless track base plate connecting structure and ballastless track having same |
| ZA2020/00706A ZA202000706B (en) | 2017-07-10 | 2020-02-03 | Ballastless track base plate connecting structure and ballastless track having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557865.1A CN107190584B (en) | 2017-07-10 | 2017-07-10 | Assembled limiting structure for ballastless track and ballastless track with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107190584A CN107190584A (en) | 2017-09-22 |
| CN107190584B true CN107190584B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710557865.1A Active CN107190584B (en) | 2017-07-10 | 2017-07-10 | Assembled limiting structure for ballastless track and ballastless track with same |
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| CN (1) | CN107190584B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112020000527B1 (en) * | 2017-07-10 | 2023-10-03 | China Railway Siyuan Survey And Design Group Co., Ltd | MOUNTED POSITIONING STRUCTURE ARRANGED BETWEEN A TRACK SLAB AND A BASE FOR POSITIONING THE TRACK SLAB AND THE BASE |
| CN107858868A (en) * | 2017-10-31 | 2018-03-30 | 天津银龙预应力材料股份有限公司 | A kind of railcar track plates |
| CN108914716B (en) * | 2018-08-20 | 2021-01-12 | 中铁第四勘察设计院集团有限公司 | Wet-joint type assembling method for prefabricated sleeper slab or track slab ballastless track |
| CN108914715B (en) * | 2018-08-20 | 2021-01-15 | 中铁第四勘察设计院集团有限公司 | Assembly type ballastless track structure for vibration reduction zone and assembly method |
| CN108914713B (en) * | 2018-08-20 | 2021-01-15 | 中铁第四勘察设计院集团有限公司 | Wet-connection type assembling method for ballastless track of vibration reduction zone |
| CN108914714B (en) * | 2018-08-20 | 2021-01-15 | 中铁第四勘察设计院集团有限公司 | Assembly type sleeper plate type or track plate type ballastless track structure and assembly method |
| 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 |
| CN114086435B (en) * | 2021-11-30 | 2023-11-28 | 中铁第四勘察设计院集团有限公司 | Full-assembled prefabricated plate type track structure |
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| CN103243619A (en) * | 2013-04-27 | 2013-08-14 | 洛阳双瑞橡塑科技有限公司 | Slab-type replaceable combined ballast bed system and construction process |
| CN203475251U (en) * | 2013-07-23 | 2014-03-12 | 深圳市地铁集团有限公司 | Bridge type track |
| CN203795256U (en) * | 2014-01-24 | 2014-08-27 | 中铁十二局集团建筑安装工程有限公司 | Track plate limiting edge sealing device |
| CN204224939U (en) * | 2014-03-24 | 2015-03-25 | 中铁十八局集团第三工程有限公司 | A kind of CRTS type III plate-type ballastless track base plate |
| CN103993529A (en) * | 2014-05-23 | 2014-08-20 | 洛阳双瑞橡塑科技有限公司 | Elastic limiting device of roadbed slab |
| CN106436494A (en) * | 2016-10-27 | 2017-02-22 | 杭州唐普徕实业有限公司 | Combined vibration damping ballast bed meeting requirements of high-performance vibration damping of urban mass transit |
| CN106758553A (en) * | 2016-12-30 | 2017-05-31 | 青岛科而泰环境控制技术有限公司 | Plate-type ballastless railway roadbed with backpressure device |
| CN106702821A (en) * | 2017-01-16 | 2017-05-24 | 安境迩（上海）科技有限公司 | Novel prefabricated track slab and manufacturing method thereof |
| CN206941311U (en) * | 2017-07-10 | 2018-01-30 | 中铁第四勘察设计院集团有限公司 | Assembled position limiting structure for non-fragment orbit and the non-fragment orbit with the structure |
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