CN103362036B - Quick construction method of embedded rail system - Google Patents
Quick construction method of embedded rail system Download PDFInfo
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- CN103362036B CN103362036B CN201310311983.6A CN201310311983A CN103362036B CN 103362036 B CN103362036 B CN 103362036B CN 201310311983 A CN201310311983 A CN 201310311983A CN 103362036 B CN103362036 B CN 103362036B
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- 238000010276 construction Methods 0.000 title claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 8
- 239000002390 adhesive tape Substances 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 23
- 239000007767 bonding agent Substances 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 238000004026 adhesive bonding Methods 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 9
- 241001669679 Eleotris Species 0.000 claims description 8
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- 230000008569 process Effects 0.000 claims description 7
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- 238000004140 cleaning Methods 0.000 claims description 6
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- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000008393 encapsulating agent Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
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Abstract
The invention discloses a quick construction method of an embedded rail system. The quick construction method comprises the following construction steps: performing construction preparation; paving a template; paving rail plates; casting a mortar layer; performing rail bearing groove pretreatment; welding a steel rail; adjusting the steel rail finely; performing antipollution protection and partitioning the rail bearing groove; casting the rail bearing groove; uniformly stirring high polymer material; casting material to the partitioned rail bearing groove with special equipment; clearing plastic films or adhesive tapes after the high polymer material achieves required hardness; and paving on the surfaces of the top surfaces of the rail plates according to construction requirements. Through being combined with prefabricated rail plates, the quick construction method has the characteristics of being quick in construction, high in efficiency and little in influence on surrounding environment, and is a green and environment-friendly construction method.
Description
Technical field
The present invention relates to a kind of track construction method, relate in particular to a kind of rapid constructing method of embedded tracks system, belong to traffic route technical field of construction.
Background technology
Along with the quickening of urban construction, urban population increases gradually, increasing to the pressure of traffic, and the urban track traffic therefore with very strong transport capacity is just greatly developed in each large-and-medium size cities.But, the long construction period of urban track traffic, floor space is large, and dust noise seriously waits construction problem, gives urban traffic, and resident living is brought very big impact.It is mainly manifested in:
1, line construction place is in urban district, and construction equipment needed thereby is of a great variety, takes up an area the large of face, and urban traffic is caused and had a strong impact on; And then resident living is caused to puzzlement;
2, excavated volume is large, and dust is many, and noise is large, affects urban environment;
3, affected by place and urban track traffic type, long construction period.
And embedded tracks system is as a kind of novel ballastless track system, in urban track traffic, there is environmental protection attractive in appearance, the feature such as construction cost is low, and floor space is few, is a kind of modern urban track traffic.
Summary of the invention
The present invention, mainly for the construction of embedded tracks system, improves the deficiency that current city rail construction exists; The rapid constructing method of this embedded tracks system has rapid construction, the feature little to traffic impact, construction noise is low; It is a kind of construction of environmental protection.Can effectively solve the deficiency existing in existing construction method.
The object of the invention is to realize by following technical proposals: a kind of rapid constructing method of embedded tracks system, it is characterized by: embedded tracks system comprises the flexible member of placing in circuit bedding, precast track plate, rail, rail support groove, the polymer composite of adjusting element, confinement element and cast, described bedding is stone sand soil structure or reinforced concrete structure, and described track plates is prefabricated reinforced concrete structure; The construction sequence of this embedded tracks system is as follows:
Step 1, preparation of construction:
Adopt the measurement line-putting method of conventional ballastless track bed substrate, at the construction field (site) the wire center control line of substrate and elevation control line are measured to unwrapping wire, as the laying reference data of track plates; And the prefabricated embedded tracks plate completing is transported to tracklaying base storage;
Step 2, laying template:
On roadbed, need the position of laid rail guidance tape to place Elastic forming board, for building screed, prepare;
Elastic forming board has high resiliency, high compressibility, high recovery, self sealss; Can under track plates Action of Gravity Field, between track plates and roadbed, form confined space, the template while building as screed.
Step 3, laid rail guidance tape:
According to the unwrapping wire result in step 1, embedded tracks plate is lifted and put in place one by one along circuit bearing of trend, in hoisting process, track plates is carried out to coarse positioning, then fragment-free track slab adjuster is fixed on to the reserved location on embedded tracks plate, then the locus of each embedded tracks plate of accurate adjustment;
Step 4, build screed:
With encapsulant, by the gap sealing on three limits, embedded tracks plate rail support groove end, guarantee that building mortar can not flow in rail support groove; By grout hole reserved on track plates, build screed; After reaching desired strength, mortar or concrete remove adjuster; Then banketing or concreting in the position around requiring at track plates, further fixes track plates position;
Step 5, rail support groove pre-treatment:
Cleaning rail support groove, in rail support groove bottom and both sides spraying and adhesive bonding agent, then lays resilient sleeper-bearing and height adjusting cushion plate;
By spraying and adhesive bonding agent, realize the effectively bonding of the base materials such as polymer composite and iron and steel, concrete; Bonding agent can make resilient sleeper-bearing and rail support groove bonding reliable; Resilient sleeper-bearing can make track structure meet line design and require rigidity, and the combination of different-thickness height adjusting cushion plate can make tread within the scope of circuit regulation elevation.
Step 6, welded rails:
By the rail welding that is transported to place together, welding point polishes flat, and Rail Surface dust, floating rust is cleaned out, in the web of the rail, the flange of rail, the spraying and adhesive bonding agent of prefabricated functional part surface; Prefabricated functional part and rail are assembled, lift in rail support groove;
After prefabricated functional part is firm by the assembling of bonding agent and steel rail web, then lifting enters in rail support groove together; Due to rail support groove limited space, the technique that adopts line assembling to hang in again, easy to operate, construction is simple, and prefabricated functional part and rail relative position can accurately guarantee.
Step 7, rail accurate adjustment:
Take central lines of track as benchmark, adjust the position of rail in rail support groove, guarantee that the circuit track geometries such as gauge meet circuit requirement; After location of rail is adjusted to the right place, with confinement element, retrain the position of rail and prefabricated functional part, to guarantee that rail can be by disturbance in follow-up work progress;
Step 8, soiling protective and rail support groove subregion:
With plastic sheeting or adhesive tape, rail head and track plates end face are carried out to soiling protective, prevent that the polymeric bonding material that will pour into a mould is to tread and track plates surface; In the rail support groove at two ends, pouring area, place subregion special baffle;
Subregion dividing plate is passed through by rail support groove subregion in pouring area; Partition shape is made according to embedded tracks system rail support groove inner structure cross section, is used for elongated rail support groove subregion.Because the macromolecular material stirring in finite time is limited, and the required castable of elongated rail support groove is very large, uses partition board dedicated to address this problem rail support groove subregion, and more easily guarantees casting quality.Separator material is identical with mould material, has good compatibility, cementability, and because material has high resiliency, fitting operation is simple and convenient.
Step 9, rail support groove cast:
Step 10, macromolecular material is stirred, with special equipment, material is poured in the rail support groove of subregion;
Macromolecular material is directly built in rail support groove inner after stirring; Be used for providing reliable and stable constraint for rail and functional part.
Step 11, after macromolecular material reaches requirement hardness, cleaning plastic sheeting or adhesive tape;
Step 12, according to construction requirement, track plates table top surface face is laid.
As optimal way, step 1 and two can be carried out simultaneously, step 7, eight and step 9 can carry out simultaneously, step 11,12,13 and step 14 can carry out simultaneously.
As optimal way, in step 7, by crowbar or other instruments, adjust the lateral attitude of rail in rail support groove, after adjusting to the right place in two one steel rail positions, put into constraint component, between support rail cell wall and functional part or steel rail web, form internal pressure, retrain the position of rail in rail support groove.
As optimal way, in step 9, macromolecular material is mainly polyurethane material, or the composite material that forms by suitable proportioning of rubber grain, wood chip, mineral grain.
Compared with prior art, beneficial effect of the present invention: the rapid constructing method of embedded tracks system of the present invention, has the following advantages:
1). engineering method is novel, reasonable and simple to operate; Have advantages of occupation of land less, noise is low, the cycle is short;
2). adopt pre-track plated construction, reduce concreting amount, reduced site work amount, shorten construction period, reduce construction noise, reduce construction area area;
3). energy accurate adjustment track plates, location of rail in construction; Guarantee that the circuit physical dimensions such as gauge, tread elevation, central lines of track meet circuit technical requirements, to guarantee train safe, even running;
4). adopt macromolecular material pouring technology, without fastener assembling and the fastening process in conventional rails construction; Simple to operate, workload is few;
5). during cast macromolecular material, adopt subregion cast, guarantee casting quality;
6). many places adopt concurrent job, and efficiency of construction is provided.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of rapid construction engineering method middle orbit of the present invention.
Fig. 2 is the vertical structure schematic diagram of rapid construction engineering method middle orbit of the present invention.
Fig. 3 is the construction process figure of rapid construction engineering method of the present invention.
1-prefabricated embedded tracks plate; 2-confinement element; 3-polymer composite; 4-height adjusting cushion plate; 5-resilient sleeper-bearing; 6-rail: 7-prefabricated functional part; 8-screed; 9-Elastic forming board; Gap between 10-track plates; 11-track slab fine adjustment device; 12-grout hole; 13-track plates center line; 14-subregion special baffle.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
Disclosed all features in this manual, or the step in disclosed all methods or process, except the speciality and/or step of mutual repulsion, all can combine by any way, unless narration especially, all can be replaced by other equivalences or the alternative features with similar object,, unless narration especially, an embodiment in a series of equivalences of each feature or similar characteristics.
As shown in Figure 1, Figure 2, Figure 3 shows, the present embodiment is in roadbed location, and use rail is 59R2 grooved rail; Macromolecular pouring material is that polyurethane material and rubber grain stir the composite material forming; Resilient sleeper-bearing is polyurethanes high-elasticity base plate; Height adjusting cushion plate material is identical with mould material, and thickness has tri-kinds of 2mm, 4mm, 5mm.Specific construction process is as follows:
(1). railway roadbed basic unit has constructed by construction drawing and technical requirements; And control disjunction mark according to circuit, according to the ballastless track bed substrate measurement line-putting method of routine, central lines of track and elevation control line are measured to unwrapping wire.
In the present embodiment, the embedded tracks of constructing on roadbed, according to the foundation pile measuring of pre-plugged, go out wire center control line and elevation control line.
Measure unwrapping wire and specifically accuse disjunction mark repetition measurement processed, disjunction mark intensive measurement.Due to combined causes such as not sedimentation of structure, construction errors, cause designed lines center line and physical presence difference, for guaranteeing to meet track train service requirement, need adjust track plan position and elevation, and arrange that wire center is controlled stake and elevation is controlled.The stake positions such as the position, shrinkage joint of simultaneously site operation being measured, substrate elevation control line, tread elevation control line, central lines of track identify.
(2). prefabricated embedded tracks plate 1 is transported to scene.
(3). according to the unwrapping wire result of step (1), in the position that need to place track plates, lay Elastic forming board 9; Template answers seam tight, must not spillage.
(4). adopt hanging device that precast track plate is winched in railway roadbed substrate, and according to the measurement unwrapping wire result in step (1), the track plates of lifting is carried out to coarse positioning.
While track plates being carried out to coarse positioning in this step, adopt conventional construction measureing equipment to complete.Measureing equipment is total powerstation, also can adopt other general measure equipment.Track plates center line 13 is overlapped with central lines of track, and error is in 10mm; Elastic forming board should, under track plates Action of Gravity Field, form the airtight space of building.
(5). adopt conventional construction measureing equipment to coordinate track slab fine adjustment device 11 for Construction of Ballastless Track, the fine adjusting method of fragment-free track slab, carries out accurate adjustment to the described track plates after coarse positioning in step (3) routinely; By artificial adjustment, make the locus of track plates position in design, be in course of adjustment, should guarantee that the rail support groove at track plates two ends overlaps, line direction is consistent with requirement, be controlled at ± 5mm of plane error.
(6). the gap at rail support groove place between two track plates, the outer side clearance of plate are sealed with encapsulant; And asphalt plank is placed at 10 places, gap between two track plates; By grout hole reserved on track plates 12 perfusion mortar layer 8 between plate bottom surface and surface layer of subgrade bed; Mortar reaches after desired strength, removes track slab fine adjustment device; According to construction drawing, at track plates, around require position concreting or banket.
In this step, sealing the outer side clearance of gap, plate of rail support groove between two track plates with encapsulant, is for preventing that mortar or the concrete of perfusion runs off; Asphalt plank structure and the track structure placed adapt.
At assigned address concreting or banket, be for track plates provides further laterally, longitudinal restraint, for follow-up surperficial laying work is prepared.
In this step, generally, after 24h ~ 48h, screed can reach desired strength, and the concrete time is determined by climatic environment and mortar specimen intensity is determined.
(7). cleaning rail support groove, and in rail support groove bottom and both sides spraying and adhesive bonding agent, then in rail support groove, lay continuous elastic backing plate 5;
In this step, mainly clear up the concrete dropping in the inherent aforementioned work progress of rail support groove, remove the dust in rail support groove, the floating rust on steel plate, and make rail support groove in dry state.
In this step, the bonding agent spraying is mono-component polyurethane specialty bonding adhesive, and construction temperature requires not tight, can adjust viscosity by adding solvent.In construction, should guarantee that spray-coating surface is dry, can not with contact with moisture.
Bonding agent spraying step is: first bonding agent is suitably coordinated with solvent, stir, make its mobility meet the instructions for use of sprayer, mixing ratio is determined according to construction temperature; Then the good bonding agent of proportioning is poured into sprayer, constructor always wears your gloves, after mouth mask, goggles, and to constructing, surface sprays.
In this step, while laying resilient sleeper-bearing 5, should guarantee backing plate continuous laying, can not occur overlapping or two distances between plates are excessive, spacing must not surpass 5mm.
(8). above resilient sleeper-bearing, place height adjusting cushion plate 4, guarantee that every place height adjusting cushion plate upper surface is in requiring altitude range.
In this step, can combine by the height adjusting cushion plate of different-thickness, reach the object of adjusting tread height, height error is in 2mm; Height adjusting cushion plate is that lay at interval, and spacing is 0.6m ~ 1.5m, and concrete numerical value is determined according to circuit technical condition and height adjusting cushion plate material, and in this example, spacing is 1.2m.
(9). rail is transported to behind scene, and by each section of rail welding together, welding point polishes flat, and polishing degree should meet correlation technique standard; Cleaning Rail Surface dust, floating rust, after dry state, locate spraying and adhesive bonding agent at the web of the rail, the flange of rail etc. until surface.
(10). by after prefabricated functional part 7 external surface spraying and adhesive bonding agent, be fixed on rail 6.Then rail 6, prefabricated functional part 7 are lifted in injection plate rail support groove together.
In this step, should be in the complete spraying and adhesive bonding agent of prefabricated functional part 7 external surface, after the assembling of assurance function parts and rail, can not come off, can adopt binding strap colligation if desired, until rail in rail support groove restrained fixing after, then remove binding strap.
In this step, use special fixture to clamp rail head of rail, along line direction, successively rail lifting is entered to rail support groove.
(11). adjust rail position in rail support groove, guarantee gauge and the requirement of central lines of track coincidence circuit; After location of rail is adjusted, with confinement element 2, retrain rail 6 and the position of prefabricated functional part 7 in rail support groove, in using confinement element process, should guarantee that location of rail is not by disturbance.
In this step, can use the simple tools such as crowbar to adjust the position of rail in rail support groove, use gauge instrument, take track plates center line as benchmark, adjust two strands of rail, first thick rear essence, adjusts repeatedly.After adjusting to the right place, confinement element 2 is pressed into the gap between support rail cell wall and prefabricated functional part, forms internal pressure, retrain location of rail; Should again to gauge, once check subsequently.
In this step, along line direction, every 1.5m ~ 2m, gauge is once adjusted.
(12). at two ends, pouring area, with plastic sheeting or adhesive tape, rail surface and track plates designated surface are protected, to prevent that castable is bonded on rail head of rail, impact driving.
(13). at two ends, macromolecular material pouring area, place subregion special baffle 14, prevent that macromolecular material runs off, and guarantees casting quality.
In this step, to rail support groove partition length, should determine according to mixing plant ability to work, atmospheric climate.Suggestion partition length is 4m ~ 8m, and present case partition length is 6m.
The shape of subregion special baffle is according to prefabricated the forming in track rail support groove inner structure cross section, and material is consistent with mould material, has good adhesive property, and good elasticity, is convenient to install.
(14). Macromolecular pouring material is transported to scene, and stirs, and the polymer composite being stirred 3 use special equipments are poured in rail support groove.
In the implementation case, polymer composite 3 used is for stirring and form with polyurethane material and rubber grain, and construction temperature is 5 ℃ ~ 35 ℃, during construction, should not touch water.
Whipping step is as follows:
A, B component are injected to clean container according to proportioning;
Use Mixing Machine that A, B component are stirred; Mixing time 2min;
According to proportioning, add rubber grain, use Mixing Machine to stir and all exist, at least stir 3min;
The mould material being stirred is divided and installed in cast container, then by cast container, be injected in time in subregion rail support groove, until water full rail support groove.
In above step, should guarantee that castable pours in rail support groove before solidifying; Can carry out Multi-point pouring by a plurality of cast containers.
(15). polyurethane material to be cast reaches after requirement hardness, removes plastic sheeting and adhesive tape.
In this step, by hand-held Shore durometer, detect polyurethane material hardness, hardness reaches after 40 °, can operate.
Polyurethane material setting time is determined according to local climate, generally in 20min ~ 4h; Curing time is generally 6d ~ 20d, according to climatic environment, determines.Under design parameter is shown in: 1:
Table 1:
| Climate temperature | Setting time | Curing time |
| 5℃ | 4h | 20d |
| 15℃ | 2h | 15d |
| 25℃ | 1h | 9d |
| 35℃ | 20min | 6d |
(16). according to construction requirement, carry out circuit table surface construction.
In this step, can, according to line design drawing requirement to track plates end face banket grass planting or asphalt, in this example, to circuit surface, carry out asphalt paving.
In this example, because track plates can shift to an earlier date prefabricated completing, therefore step (1) and (2) can be carried out simultaneously; The assembling of the welding of rail, prefabricated functional part and rail does not relate on track plates and constructing, therefore step (7), (8) and step (9) can be carried out simultaneously; The preparation work of polyurethane material does not relate to work in rail support groove on track plates, therefore step (11), (12), (13) and step (14) can be carried out simultaneously.
In whole work progress, without concrete vibrating, build, without big machinery operation, relate to component major part and be highly elastic material, therefore construction noise is little.
Above the present invention has been carried out to detailed introduction, applied specific case herein structure of the present invention is set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.To change of the present invention and improvement, will be possible, and can not exceed design and the scope of accessory claim regulation.
Claims (3)
1. the rapid constructing method of an embedded tracks system, it is characterized by: embedded tracks system comprises the flexible member of placing in circuit bedding, embedded tracks plate, rail, rail support groove, the polymer composite of adjusting element, confinement element and cast, described bedding is stone sand soil structure or reinforced concrete structure, and described embedded tracks plate is prefabricated reinforced concrete structure; The construction sequence of this embedded tracks system is as follows:
Step 1, preparation of construction:
Adopt the measurement line-putting method of conventional ballastless track bed substrate, at the construction field (site) the wire center control line of substrate and elevation control line are measured to unwrapping wire, as the laying reference data of embedded tracks plate; And the prefabricated embedded tracks plate completing is transported to tracklaying base storage;
Step 2, laying template:
On roadbed, need the position of laying embedded tracks plate to place Elastic forming board, for building screed, prepare;
Step 3, laying embedded tracks plate:
According to the unwrapping wire result in step 1, embedded tracks plate is lifted and put in place one by one along circuit bearing of trend, in hoisting process, embedded tracks plate is carried out to coarse positioning, then fragment-free track slab adjuster is fixed on to the reserved location on embedded tracks plate, then the locus of each embedded tracks plate of accurate adjustment;
Step 4, build screed:
With encapsulant, by the gap sealing on three limits, embedded tracks plate rail support groove end, guarantee that building mortar can not flow in rail support groove; By grout hole reserved on embedded tracks plate, build screed; After reaching desired strength, mortar or concrete remove adjuster; Then banketing or concreting in the position requiring at embedded tracks panel area, further fixes embedded tracks Board position;
Step 5, rail support groove pre-treatment:
Cleaning rail support groove, in rail support groove bottom and both sides spraying and adhesive bonding agent, then lays resilient sleeper-bearing and height adjusting cushion plate;
Step 6, welded rails:
By the rail welding that is transported to place together, welding point polishes flat, and Rail Surface dust, floating rust is cleaned out, in the web of the rail, the flange of rail, the spraying and adhesive bonding agent of prefabricated functional part surface; Prefabricated functional part and rail are assembled, lift in rail support groove;
Step 7, rail accurate adjustment:
Take central lines of track as benchmark, adjust the position of rail in rail support groove, guarantee that gauge circuit track geometry meets circuit requirement; After location of rail is adjusted to the right place, with confinement element, retrain the position of rail and prefabricated functional part, to guarantee that rail can be by disturbance in follow-up work progress;
Step 8, soiling protective and rail support groove subregion:
With plastic sheeting or adhesive tape, rail head and embedded tracks plate top surface are carried out to soiling protective, prevent that the polymeric bonding material that will pour into a mould is to tread and embedded tracks plate surface; In the rail support groove at two ends, pouring area, place subregion special baffle;
Step 9, rail support groove cast;
Step 10, macromolecular material is stirred, with special equipment, material is poured in the rail support groove of subregion;
Step 11, after macromolecular material reaches requirement hardness, cleaning plastic sheeting or adhesive tape;
Step 12, according to construction requirement, embedded tracks plate top surface surface is laid.
2. the rapid constructing method of embedded tracks system as claimed in claim 1, it is characterized in that: in step 7, by crowbar or other instruments, adjust the lateral attitude of rail in rail support groove, after adjusting to the right place in two one steel rail positions, put into constraint component, between support rail cell wall and prefabricated functional part or steel rail web, form internal pressure, retrain the position of rail in rail support groove.
3. the rapid constructing method of embedded tracks system as claimed in claim 1, is characterized in that: in step 9, macromolecular material is mainly polyurethane material, or the composite material that forms by suitable proportioning of rubber grain, wood chip, mineral grain.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310311983.6A CN103362036B (en) | 2013-07-24 | 2013-07-24 | Quick construction method of embedded rail system |
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| CN201310311983.6A CN103362036B (en) | 2013-07-24 | 2013-07-24 | Quick construction method of embedded rail system |
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| CN103362036B true CN103362036B (en) | 2014-10-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103952951A (en) * | 2014-04-02 | 2014-07-30 | 北京建鼎国铁工程设计有限公司 | Process for high speed railway ballastless track construction |
| CN104532690B (en) * | 2014-12-18 | 2016-06-29 | 成都市新筑路桥机械股份有限公司 | Separate type track structure is prefabricated and construction method |
| CN105200869B (en) * | 2015-09-02 | 2017-01-18 | 成都市新筑路桥机械股份有限公司 | Method for quickly constructing embedded rail system from top to bottom |
| CN105133439B (en) * | 2015-09-30 | 2017-05-31 | 成都市新筑路桥机械股份有限公司 | A kind of embedded ballastless track system for afforesting section |
| CN105256667A (en) * | 2015-09-30 | 2016-01-20 | 成都市新筑路桥机械股份有限公司 | Framework flat prefabricated track plate |
| CN105155364A (en) * | 2015-09-30 | 2015-12-16 | 成都市新筑路桥机械股份有限公司 | Embedded track structure used in tunnel |
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