CN106012694A - Prestressed concrete track slab and manufacturing method thereof - Google Patents
Prestressed concrete track slab and manufacturing method thereof Download PDFInfo
- Publication number
- CN106012694A CN106012694A CN201610381479.7A CN201610381479A CN106012694A CN 106012694 A CN106012694 A CN 106012694A CN 201610381479 A CN201610381479 A CN 201610381479A CN 106012694 A CN106012694 A CN 106012694A
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- Prior art keywords
- steel wire
- concrete
- track
- railway board
- track plates
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
- B28B13/065—Removing the shaped articles from moulds by applying electric current or other means of discharging, e.g. pneumatic or hydraulic discharging means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention relates to a prestressed concrete track slab and a manufacturing method thereof. The prestressed concrete track slab is characterized by comprising a track slab body, a structural reinforcement cage, longitudinal steel wires and transverse steel wires. The structural reinforcement cage, the longitudinal steel wires and the transverse steel wires are all arranged in the track slab body; the track slab body is obtained by casting concrete; the longitudinal steel wires and the transverse steel wires are arranged in the structural reinforcement cage; the anchoring positions of the longitudinal steel wires and the transverse steel wires are determined by using a mold; two layers of longitudinal steel wires are arranged; one layer of the transverse steel wires is arranged; the longitudinal steel wires and the transverse steel wires are arranged separately from the structural reinforcement cage; an earthing terminal is led out from the structural reinforcement cage via a welding position; and the prestressed concrete track slab is manufactured through reinforcement, concrete casting, vapor curing, demolding and water curing. Through adoption of the prestressed concrete track slab provided by the invention, a problem that a track circuit is affected by the longitudinal steel wires and the transverse steel wires in the track slab is solved without increasing insulating measures, and the influence of the insulating measures, adopted to satisfy the track circuit, on the durability of the track slab is avoided.
Description
Technical field
The present invention relates to underground railway track plate technique field, be specifically related to a kind of prestressed concrete railway board and production method thereof.
Background technology
Track plates has the advantages such as quality easily ensures, durability is high, crack resistance is good, speed of application is fast, track recoverability is preferable, is widely used in subway engineering.But owing to the reinforcing bar loop in track plates, base, convex blocking platform and rail are by the mutual inductance effect between electric current, have impact on the conveying length of resonant mode non-insulated track circuit.If not doing insulation processing, track circuit transmission distance has a long way to go with standard-required.Therefore, reducing track plates section affects the transmission of track circuit, is the major issue that must solve during China's non-fragment orbit large-scale promotion uses.
Research test result according to latest domestic, the reinforcing steel bar insulating in track plates processes and yet suffers from the problem that quantity is many, difficulty is big.The measure generally taked in engineering is the insulation between reinforcing bar.Insulation mode between reinforcing bar has two kinds: one is that reinforcing bar cross point adds insulated sleeve or insulating blanked clamper；Another kind is to use Epoxy Resin Coated Steel Bars.
But there is problem below in these insulation measures:
One is that the cross point of reinforcing bar adds edge insulator or insulated sleeve: edge insulator or insulated sleeve typically use common polythene plastics or nylon to make, descend polyethylene, nylon material bigger with concrete shrinkage coefficient difference often, the hole that its junction is easily formed, easily produce crack to send out, necessarily the durability of track plates is exerted an adverse impact, its influence degree is still not clear, and needs to be checked by practice.
Two is to use coated reinforcement: use coated reinforcement to avoid the generation in source, crack, but the bond stress that epoxy coating causes concrete reduces, and bearing capacity and durability to structure produce large effect.
Summary of the invention
It is an object of the invention to provide a kind of prestressed concrete railway board and production method thereof, this prestressed concrete railway board is not in the case of increasing insulation measures, solve in track plates vertically and horizontally reinforcing bar track circuit affected problem, it is to avoid the insulation measures taked for meeting track circuit produces impact to track plates durability.
The present invention is achieved in that
A kind of prestressed concrete railway board, it is characterized in that: include track plates plate body, distributing bar cage, longitudinal steel wire and transverse steel wire, described distributing bar cage, longitudinal steel wire and transverse steel wire are all located in track plate body, track plates plate body uses concreting to form, described longitudinal steel wire and transverse steel wire are located in distributing bar cage, and use mould to determine the anchorage point of longitudinal steel wire and transverse steel wire, described longitudinal steel wire is provided with two-layer, transverse steel wire is provided with one layer, longitudinal steel wire and transverse steel wire are separately positioned with distributing bar cage, described distributing bar cage draws ground terminal by welding position.
Further preferably, two ends, described track plate surface are distributed with concrete track, and concrete track is provided with insulated sleeve.
Further preferably, described track plate body side surface is provided with the lifting sleeve pipe for lifting.
Further preferably, described longitudinal steel wire and transverse steel wire are helix rib steel wire.
The production method of prestressed concrete railway board of the present invention, comprises the steps:
Arrangement of reinforcement: first insulated sleeve is inserted in pilot pin, sleeve bottom is tapped vertically downward with rubber hammer, until sleeve opening is closely connected with punching block base plate, then the distributing bar cage installing deformed bar and anchor plate is hung in side plate, draw ground terminal in distributing bar cage welding position, screw in manual for deformed bar in connecting rod, with spanner, connecting rod one end is fixed, preventing it from rotating, connecting rod is fastenedly connected by other end electric wrench with deformed bar；The side plate assembled, distributing bar cage, connecting rod entirety are hung on the base plate in mould stretch-draw well, uses pre-tensioning equipment by deformed bar stretch-draw.
Concreting: concrete proportioning is prepared by TB/T 3275, by mould stretch-draw well good for the concreting for preparing to arrangement of reinforcement, concrete gel material consumption ＜ 500kg/m3, water-cement ratio ＜ 0.35, concrete 's air-containing is 2.0-4.0%.
Steam curing: first stand 3 hours in the environment of 5 DEG C-30 DEG C after concreting, then steam curing is proceeded by, heating up or cooling rate≤10 DEG C/h during steam curing, during steam constant temperature maintenance, temperature is less than 40 DEG C, concrete railway board core maximum temperature ＜ 55 DEG C；Described steam curing condition is: first stand 3 hours, 9 hours, then intensification 2 hours, then thermostatic curing, finally cooling maintenance 2 hours.
The demoulding: concrete railway board steam curing is dismantled after completing the connecting bolt of punching block base plate and side form, with four jack synchronous ascendings on suspension bracket, concrete railway board is lifted off base plate 10mm, suspension centre alignment rail plate center, side plate is hung punching block base plate together with track plates by level, is placed on above platform, is screwed out by tension rod with special equipment in track plates, cleaning, coating release agent are in case using next time, side plate disintegrates, cleaning, and concrete railway board is hung platform.
Water is supported: is put into by the concrete railway board after the demoulding in pond and carries out maintenance, water supports the time 3-5 days, water temperature ＞ of maintenance 15 DEG C, temperature difference ＞ between water temperature and concrete track plate temperature 10 DEG C, concrete railway board water should cover moisturizing material after having supported immediately, 10-15 days moisture-keeping maintaining time, apply connecting bolt plate and connecting bolt will be close to two pieces of track plates when track plates water is supported and connect, make track plates stack integral.
Further preferably, during described steam curing, the temperature difference between concrete railway board core concrete and surface concrete, surface concrete and environment all≤15 DEG C.
The substantive distinguishing features that the present invention highlights with significantly progress is:
1, the present invention solidifying soil track plates is not in the case of increasing insulation measures, solving in track plates vertically and horizontally reinforcing bar affects problem to track circuit, it is to avoid the insulation measures taked for meeting track circuit produces impact to track plates durability.Vertically and horizontally about 1 000, reinforcing bar cross point in CRTS I type, CRTS II type track plates, use sleeve pipe, edge insulator or coated reinforcement, all the durability of bond stress and structure between concrete inherent quality, reinforcing bar and concrete can be had a negative impact, and the reinforcement manner of pretensioned prestressing track plates can thoroughly solve this difficult problem.
2, the present invention used bidirectional pre-tensioned pre-stress rail plate preferred allow design load effect lower section occur certain tension partial prestressing system.Under configuration regular reinforcement skeleton premise, relative analysis longitudinally single-layer bidirectional pre-tensioned prestressing structural design scheme double-deck, horizontal, by comparative studies such as structural-load-carrying capacity, workability, structure detailing requiments, preferably longitudinally configure double-layer prestressed reinforcing bar, kernel of section is arranged symmetrically with, the structural design scheme that landscape configuration monolayer presstressed reinforcing steel, kernel of section are arranged.The anti-fatigue performance of deformed bar and itself and surrounding concrete to cohere situation closely related, once near crackle, cohesion is destroyed, presstressed reinforcing steel can be accelerated destroy, thus affect bearing capacity and the durability of structure, based on pre-stress rail plate outdoor use environment, bear the features such as train fatigue load, during track plates design, it is configured with regular reinforcement at top layer and bottom, and use 10 less mm diameters and closeer spacing, form framework of steel reinforcement, control critical eigenvalue width extends, and prevents presstressed reinforcing steel from corroding；Meanwhile, reasonable disposition regular reinforcement, it is also possible to improve ductility and the globality of track plates structure, effectively absorb and dissipation vibrational energy.
3, the present invention solidifying soil track plates is by optimizing arrangement of reinforcement, bidirectional pre-tensioned pre-stress rail plate structure design feature is: design by partial prestressed structure, hybrid reinforcement is used to improve structural integrity, presstressed reinforcing steel end arranges anchor plate and reduces transmission length of prestress and prevent track plates from cleaving, and presstressed reinforcing steel end is not exposed track plates side and improved structure durability.
4, arranging ground rebar in track plates to be connected with two-terminal-grounding terminal, it is achieved track structure integrated ground, concrete itself has stronger insulating properties, and this characteristic can be utilized to reach the purpose of insulation.The resistivity of concrete is typically at 10000-15000 Ψ/cm, high more than 20000 Ψ/cm；If more than bar spacing 5mm, resistivity is more than 5000 Ψ, not affects track circuit.Needing water to support more than 3d in track plates production process, after pretensioned prestressing track plates soaks 14d in pond, under wet condition, the conductivity of test is not changed in.By analyzing inspection and calculate and laboratory test showing, every mechanical performance index such as the intensity of bidirectional pre-tensioned prestressed concrete railway board, cracking resistance and Fatigue Bearing Capacity is higher, meets the requirement of platy ballastless track structure.Through on-the-spot test, track plate insulation is functional, meets the requirement of track circuit.
5, good economy performance, pre-tensioning system produces the P5930 type lower-cost reason of pre-stress rail plate and is, the amount of reinforcement in track plates is less, saves the expense used required for coated reinforcement or insulated sleeve.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of prestressed concrete railway board of the present invention；
Fig. 2 is the plan structure schematic diagram of prestressed concrete railway board of the present invention；
Fig. 3 is the right TV structure schematic diagram of prestressed concrete railway board of the present invention；
Fig. 4 is the presstressed reinforcing steel arrangement schematic diagram of prestressed concrete railway board of the present invention；
Fig. 5 is that the presstressed reinforcing steel of prestressed concrete railway board of the present invention arranges plan structure schematic diagram；
Fig. 6 is the structural representation of helix rib steel wire.
The component names that in figure, sequence number is relative:
Track plates plate body 1, distributing bar cage 2, longitudinal steel wire 3, transverse steel wire 4, concrete track 5, insulated sleeve 6, ground terminal 7, lifting sleeve pipe 8.
Detailed description of the invention
Below in conjunction with drawings and Examples, prestressed concrete railway board of the present invention is further described.
As shown in figures 1 to 6, prestressed concrete railway board of the present invention includes track plates plate body 1, distributing bar cage 2, longitudinal steel wire 3, transverse steel wire 4, concrete track 5, insulated sleeve 6, ground terminal 7 and lifting sleeve pipe 8.
Wherein, distributing bar cage 2, longitudinal steel wire 3 and transverse steel wire 4 are all located in track plate body 1, track plates plate body 1 uses concreting to form, longitudinal steel wire 3 and transverse steel wire 4 are located in distributing bar cage 2, and longitudinal steel wire 3 and the anchorage point of transverse steel wire 4, described longitudinal steel wire 3 are provided with two-layer to use mould to determine, transverse steel wire 4 is provided with one layer, longitudinal steel wire 3 and transverse steel wire 4 are separately positioned with distributing bar cage 2, and described distributing bar cage 2 draws ground terminal 7 by welding position；Two ends, described track plates plate body 1 surface are distributed with concrete track 5, and concrete track 5 is provided with insulated sleeve 6；Track plates plate body 1 side is provided with the lifting sleeve pipe 8 for lifting；Described longitudinal steel wire 3 and transverse steel wire 4 are helix rib steel wire.
Embodiment
1
Arrangement of reinforcement: first insulated sleeve is inserted in pilot pin, sleeve bottom is tapped vertically downward with rubber hammer, until sleeve opening is closely connected with punching block base plate, then the distributing bar cage installing deformed bar and anchor plate is hung in side plate, draw ground terminal in distributing bar cage welding position, screw in manual for deformed bar in connecting rod, with spanner, connecting rod one end is fixed, preventing it from rotating, connecting rod is fastenedly connected by other end electric wrench with deformed bar；The side plate assembled, distributing bar cage, connecting rod entirety are hung on the base plate in mould stretch-draw well, uses pre-tensioning equipment by deformed bar stretch-draw；
Concreting: concrete proportioning is carried out preparing and being determined by test by TB/T 3275, concrete gel material consumption ＜ 500kg/m3, water-cement ratio ＜ 0.35, concrete 's air-containing is 2.0-4.0%, by the concreting for preparing in the mould stretch-draw well that arrangement of reinforcement is good；
Steam curing: first stand 3 hours in the environment of 5 DEG C-30 DEG C after concreting, then steam curing is proceeded by, heating up or cooling rate≤10 DEG C/h during steam curing, during steam constant temperature maintenance, temperature is less than 40 DEG C, concrete railway board core maximum temperature ＜ 55 DEG C；Described steam curing condition is: first stand 3 hours, 9 hours, then intensification 2 hours, then thermostatic curing, finally cooling maintenance 2 hours；During steam curing, the temperature difference between concrete railway board core concrete and surface concrete, surface concrete and environment all≤15 DEG C.
The demoulding: concrete railway board steam curing is dismantled after completing the connecting bolt of punching block base plate and side form, with four jack synchronous ascendings on suspension bracket, concrete railway board is lifted off base plate 10mm, suspension centre alignment rail plate center, side plate is hung punching block base plate together with track plates by level, is placed on above platform, is screwed out by tension rod with special equipment in track plates, cleaning, coating release agent are in case using next time, side plate disintegrates, cleaning, and concrete railway board is hung platform；
Water is supported: is put into by the concrete railway board after the demoulding in pond and carries out maintenance, water supports the time 3-5 days, water temperature ＞ of maintenance 15 DEG C, temperature difference ＞ between water temperature and concrete track plate temperature 10 DEG C, concrete railway board water should cover moisturizing material after having supported immediately, 10-15 days moisture-keeping maintaining time, apply connecting bolt plate and connecting bolt will be close to two pieces of track plates when track plates water is supported and connect, make track plates stack integral.
Claims (7)
1. a prestressed concrete railway board, it is characterized in that: include track plates plate body (1), distributing bar cage (2), longitudinal steel wire (3) and transverse steel wire (4), described distributing bar cage (2), longitudinal steel wire (3) and transverse steel wire (4) are all located in track plate body (1), track plates plate body (1) uses concreting to form, described longitudinal steel wire (3) and transverse steel wire (4) are located in distributing bar cage (2), and use mould to determine longitudinal steel wire (3) and the anchorage point of transverse steel wire (4), described longitudinal steel wire (3) is provided with two-layer, transverse steel wire (4) is provided with one layer, longitudinal steel wire (3) and transverse steel wire (4) are separately positioned with distributing bar cage (2), described distributing bar cage (2) draws ground terminal (7) by welding position.
Prestressed concrete railway board the most according to claim 1, it is characterised in that: described track plates plate body (1) two ends, surface are distributed with concrete track (5), and concrete track (5) is provided with insulated sleeve (6).
Prestressed concrete railway board the most according to claim 1, it is characterised in that: described track plates plate body (1) side is provided with the lifting sleeve pipe (8) for lifting.
Prestressed concrete railway board the most according to claim 1, it is characterised in that: described longitudinal steel wire (3) and transverse steel wire (4) they are helix rib steel wire.
5. the production method of prestressed concrete railway board as claimed in claim 1, it is characterised in that comprise the steps:
Arrangement of reinforcement: first insulated sleeve is inserted in pilot pin, sleeve bottom is tapped vertically downward with rubber hammer, until sleeve opening is closely connected with punching block base plate, again the distributing bar cage installing deformed bar and anchor plate is hung in side plate, ground terminal is drawn in distributing bar cage welding position, screwing in manual for deformed bar in connecting rod, fixed connecting rod one end with spanner, connecting rod is fastenedly connected by other end electric wrench with deformed bar；Then the side plate assembled, distributing bar cage, connecting rod entirety are hung on the base plate in mould stretch-draw well, use pre-tensioning equipment by deformed bar stretch-draw；
Concreting: and by mould stretch-draw well good for the concreting for preparing to arrangement of reinforcement；
Steam curing: first stand 3 hours in the environment of 5 DEG C-30 DEG C after concreting, then steam curing is proceeded by, heating up or cooling rate≤10 DEG C/h during steam curing, during steam constant temperature maintenance, temperature is less than 40 DEG C, concrete railway board core maximum temperature ＜ 55 DEG C；Described steam curing condition is: first stand 3 hours, 9 hours, then intensification 2 hours, then thermostatic curing, finally cooling maintenance 2 hours；
The demoulding: concrete railway board steam curing is dismantled after completing the connecting bolt of punching block base plate and side form, with four jack synchronous ascendings on suspension bracket, concrete railway board is lifted off base plate 10mm, suspension centre alignment rail plate center, side plate is hung punching block base plate together with track plates by level, is placed on above platform, is screwed out by tension rod with special equipment in track plates, cleaning, coating release agent are in case using next time, side plate disintegrates, cleaning, and concrete railway board is hung platform；
Water is supported: is put into by the concrete railway board after the demoulding in pond and carries out maintenance, water supports the time 3-5 days, water temperature ＞ of maintenance 15 DEG C, temperature difference ＞ between water temperature and concrete track plate temperature 10 DEG C, concrete railway board water should cover moisturizing material after having supported immediately, 10-15 days moisture-keeping maintaining time, apply connecting bolt plate and connecting bolt will be close to two pieces of track plates when track plates water is supported and connect, make track plates stack integral.
The production method of prestressed concrete railway board the most according to claim 5, it is characterised in that: gel material content ＜ 500kg/m in described concrete3, water-cement ratio ＜ 0.35, concrete 's air-containing is 2.0-4.0%.
The production method of prestressed concrete railway board the most according to claim 5, it is characterised in that: during described steam curing, the temperature difference between concrete railway board core concrete and surface concrete, surface concrete and environment all≤15 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381479.7A CN106012694A (en) | 2016-06-01 | 2016-06-01 | Prestressed concrete track slab and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381479.7A CN106012694A (en) | 2016-06-01 | 2016-06-01 | Prestressed concrete track slab and manufacturing method thereof |
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| CN106012694A true CN106012694A (en) | 2016-10-12 |
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| CN201610381479.7A Pending CN106012694A (en) | 2016-06-01 | 2016-06-01 | Prestressed concrete track slab and manufacturing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106758551A (en) * | 2016-12-05 | 2017-05-31 | 广西三维铁路轨道制造有限公司 | A kind of quick spacing assembling track plates of pretensioning prestressed concrete |
| CN106808575A (en) * | 2017-03-03 | 2017-06-09 | 山西高行液压股份有限公司 | High-speed railway track plate pre-tensioning system flowing water unit production line demoulding equipment |
| CN107460794A (en) * | 2017-04-24 | 2017-12-12 | 中铁四局集团有限公司 | Construction method for prefabricating CRTS III plate type ballastless track in severe cold area |
| CN107675564A (en) * | 2017-11-16 | 2018-02-09 | 广西三维铁路轨道制造有限公司 | A kind of fragment-free track slab framework of steel reinforcement insulation system |
| CN108189202A (en) * | 2018-03-10 | 2018-06-22 | 山东高速轨道设备材料有限公司 | Pre-stress rail plate production mould |
| CN108297265A (en) * | 2018-02-08 | 2018-07-20 | 张若霖 | A kind of processing method of superimposed sheet |
| CN110485214A (en) * | 2019-08-28 | 2019-11-22 | 吴永芳 | A kind of prefabricated railway roadbed module of assembly digitalization and its production method, track |
| CN113026434A (en) * | 2021-03-12 | 2021-06-25 | 中铁二十三局集团轨道交通工程有限公司 | Steel plate and wire mesh structure concrete track slab |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758551A (en) * | 2016-12-05 | 2017-05-31 | 广西三维铁路轨道制造有限公司 | A kind of quick spacing assembling track plates of pretensioning prestressed concrete |
| CN106808575A (en) * | 2017-03-03 | 2017-06-09 | 山西高行液压股份有限公司 | High-speed railway track plate pre-tensioning system flowing water unit production line demoulding equipment |
| CN107460794A (en) * | 2017-04-24 | 2017-12-12 | 中铁四局集团有限公司 | Construction method for prefabricating CRTS III plate type ballastless track in severe cold area |
| CN107675564A (en) * | 2017-11-16 | 2018-02-09 | 广西三维铁路轨道制造有限公司 | A kind of fragment-free track slab framework of steel reinforcement insulation system |
| CN108297265A (en) * | 2018-02-08 | 2018-07-20 | 张若霖 | A kind of processing method of superimposed sheet |
| CN108189202A (en) * | 2018-03-10 | 2018-06-22 | 山东高速轨道设备材料有限公司 | Pre-stress rail plate production mould |
| CN110485214A (en) * | 2019-08-28 | 2019-11-22 | 吴永芳 | A kind of prefabricated railway roadbed module of assembly digitalization and its production method, track |
| CN113026434A (en) * | 2021-03-12 | 2021-06-25 | 中铁二十三局集团轨道交通工程有限公司 | Steel plate and wire mesh structure concrete track slab |
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