CN205617159U - Board -like no tiny fragments of stone, coal, etc. railway roadbed structure - Google Patents
Board -like no tiny fragments of stone, coal, etc. railway roadbed structure Download PDFInfo
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- CN205617159U CN205617159U CN201620337254.7U CN201620337254U CN205617159U CN 205617159 U CN205617159 U CN 205617159U CN 201620337254 U CN201620337254 U CN 201620337254U CN 205617159 U CN205617159 U CN 205617159U
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Abstract
The utility model provides a board -like no tiny fragments of stone, coal, etc. Railway roadbed structure, its characterized in that: this structure from bottom to top by reinforced concrete base, isolation layer, concrete press annotate the layer, prefabricated track board constitutes, concrete base upper portion is equipped with protruding type and keeps off the platform, prefabricated track board is laid and is kept off between the platform at adjacent two protruding types, has predetermine a plurality of exhaust holes in the track board, the concrete is pressed and is annotated hole and fastener hole, track board lower part is provided with many the exhaust ditches that intersect vertically, the exhaust ditch links to each other with the hole of exhausting, and the concrete is poured into into in the pressurization between concrete base and the track board. The utility model has the advantages that: can ensure effectively that the air was effectively discharged when the concrete pressed the notes layer to inject into, improve track board and concrete and pressed the frictional force of annotating between the layer, the concrete pressure is annotated the layer and is adopted a pressurization slip casting mode, and it is closely knit to guarantee that the concrete fills, prevents effectively that the track board from taking place deforming and breaking, the stability and the life of very big improvement railway roadbed because of filled layer space growth.
Description
Technical field
This utility model relates to high speed railway construction middle orbit plate laying construction technology, is specifically related to a kind of plate-type ballastless ballast bed structure, belongs to plate-type ballastless railway roadbed laying construction technical field.
Background technology
Non-fragment orbit is as the track structure pattern that developed country's high-speed railway is main, the slab track etc. of the Bo Ge, radar and the Japan that mainly have Germany of representative platy ballastless track structure at present.China's non-fragment orbit is frequently with self-compacting concrete as filling bed, and its track plates uses steam vent mode of gathering to be exhausted, and this technique exists following 4 deficiencies.
First, self-compacting concrete mobility is wayward；Second, use self-compacting concrete to construct filling bed, be difficult to differentiate concrete filling state, the most typically use concrete amount to control filling, pass judgment on accuracy relatively low, often lead to last also need and use slip casting repairing；3rd, the most general steam vent that gathers in track plates is exhausted, but switching turnout plate area is bigger, ventilation aperture area ratio is extremely low, in addition use concrete gravity power carry out filling, pressure is less, with contact site 0, track plates bottom surface pressure, or be not in contact with, it is easy to cause the position gas between steam vent to discharge. at all；4th, self-compacting concrete pours into and must assure that continuously, the most just can have preferable filling effect, and speed of application is slow.
Above reason is all easily caused concrete filling leakiness, intensity of filling bed is relatively low, it is easily caused track plates lower space to grow, when train passes through, the easy stress in growth position, switching turnout plate space is concentrated, the phenomenons such as track plates gap, wing song and packed layer cracking occur, affect track plates service life, cause track plates lesion ruptures under serious conditions, directly cause security incident.
The most general employing filling detects after completing, and is found to have position, bigger space and uses slip casting to repair, affects construction quality, be delayed the construction period, waste a large amount of human and material resources, financial resources.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art, it is provided that a kind of plate-type ballastless ballast bed structure, and by offering steam vent and pressure injection hole on track plates, concrete pressurization is injected in addition, and when can inject with effective guarantee concrete, air is effectively discharged.
This utility model purpose realizes being completed by techniques below scheme:
A kind of plate-type ballastless ballast bed structure, it is characterized in that: described structure at least includes concrete bed, sealing coat, convex gear platform, concrete press-casting layer and track plates, described sealing coat is arranged between described concrete bed and described concrete press-casting layer, described convex gear platform is arranged on described concrete bottom seating face and through described sealing coat, and described track plates is fixedly installed between the described convex gear platform of adjacent two concrete beds；Steam vent, pressure injection hole and fastener hole is at least offered on described track plates.
Be provided with vertically and horizontally wrong aerofluxus ditch in the bottom of described track plates, described aerofluxus ditch is connected with described steam vent.
The position that arranges of described convex gear platform is positioned at the middle part of described track plates, is filled with concrete between described track plates and described convex gear platform.
Reinforcing bar all it is disposed with inside described concrete bed, described concrete press-casting layer and described track plates.
The utility model has the advantages that: first, used concrete flowability requires, less than self-compacting concrete, to be easily configured；Second, use pressurization injection concrete to construct filling bed, injection rate on the one hand can be used to inject state to grasp concrete, on the other hand take the outer shifting method of template directly can grasp concrete in real time by observation peripheral concrete height and inject situation；3rd, track plates lower exhaust ditch connects with steam vent, and concrete pressurization is injected in addition, and when can inject with effective guarantee concrete, air is effectively discharged；4th, concrete injects finally can fill whole aerofluxus ditch and steam vent, further increases the frictional force between track plates and concrete press-casting layer；5th, concrete press-casting layer uses grouting under pressure mode, can not only improve concrete press-casting speed of application, additionally it is possible to ensure that concrete filling is closely knit, effectively prevent track plates because filling bed space is grown unbalance stress, occur that track plates gap, wing be bent and the phenomenon such as packed layer cracking；6th, pressurization injection can improve intensity after concrete setting, and concrete bed, concrete press-casting layer, precast track plate are formed monocoque structure, improves stability and the service life of railway roadbed greatly.
Accompanying drawing explanation
Fig. 1 is site plan of the present utility model；
Fig. 2 is I-I profile in Fig. 1.
Detailed description of the invention
This utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, in order to the understanding of technical staff of the same trade:
As shown in Figure 1-2, in figure, labelling 1-12 is respectively as follows: concrete bed 1, sealing coat 2, concrete press-casting layer 3, convex gear platform 4, track plates 5, rail 6, fastener 7, steam vent 8, pressure injection hole 9, aerofluxus ditch 10, fastener hole 11, template 12.
Embodiment: as depicted in figs. 1 and 2, the plate-type ballastless ballast bed structure in the present embodiment includes the concrete bed 1 being positioned at roadbed end face top, is disposed with reinforcing bar, plays the effect that Upper Structure power passes to down cover roadbed inside it.Sealing coat 2, between concrete bed 1 and concrete press-casting layer 3, is used for isolating concrete bed 1 and concrete press-casting layer 3.The bottom of convex gear platform 4 is fixedly installed on the surface of concrete bed 1, and its convex stage body passes sealing coat 2, plays the effect of isolation concrete bed 1 and concrete press-casting layer 3, it is simple to maintenance.Concrete press-casting layer 3 is internal is also disposed with reinforcing bar, for improving the intensity of pressure injection layer.
As it is shown in figure 1, track plates 5 is fixedly installed between the convex gear platform 4 of adjacent two concrete beds 1, convex gear platform 4 primarily serves the effect limiting track plates 5 horizontal displacement.
As in figure 2 it is shown, track plates 5 is positioned on concrete press-casting layer 3, being disposed with reinforcing bar inside it, prefabricated for indoor, formed precision is higher, smooth and beautiful appearance.Multiple steam vent 8 it is preset with on the plate body of track plates 5, the plate body of each steam vent 8 all vertically penetrating orbit plate 5, and be connected with the aerofluxus ditch 10 being preset in bottom track plates 5, some aerofluxus ditches 10 are arranged in the bottom of track plates 5 in crisscross shape, so, when the pressure injection of concrete press-casting layer 3, significantly increase the area of track plates 5 lower exhaust passage, ensure that concrete press-casting layer 3 is in pressure injection aerofluxus completely constantly, it is to avoid the problem that filling bed leakiness, air discharge difficulty, space is grown.
As depicted in figs. 1 and 2, being preset with multiple pressure injection hole 9 on the plate body of track plates 5, each pressure injection hole 9 all passes vertically through track plates 5, concrete import when constructing as concrete press-casting layer 3.
As depicted in figs. 1 and 2, being provided with multiple fastener hole 11 on the plate body of track plates 5, each fastener hole 11 lower end does not passes through track plates 5, for fastener for installing 7.
The present embodiment is in the specific implementation: the convex gear platform 4 being arranged on concrete bed 1 its position be set be positioned in the middle part of track plates 5, it is ensured that overall structure is symmetrical, uniform force.It is filled with concrete between track plates 5 and convex gear platform 4, to improve bonding strength between the two, thus improves the convex gear platform 4 position-limiting action to track plates 5 further.
The inside of track plates 5 is also disposed with reinforcing bar, to improve the intensity of track plates 5.
The size of each parts in the present embodiment, intensity and technology require all to need to select according to actual design, being typically based on existing specification and may select concrete bed 1 thickness is 180-250mm, comprcssive strength is 50-60MPa, its diameter b is 450-550mm, it is highly 340-370mm, concrete slump ＞ 200mm in concrete press-casting layer 3, divergence ＞ 500mm, sealing coat 2 thickness is 4-6mm, width 2600-3000mm, more than track plates 5 width L1300-500mm, track plates 5 width L1 is 2300-2500mm, thickness is 160-200mm, length L2 is 3800-4200mm；Further, steam vent 8 diameter e is 15-30mm, and spacing d1 is 500-800mm, array pitch d2 is 900-1100mm, and aerofluxus ditch 10 width d is 40-60mm, and degree of depth d4 is 20-40mm, pressure injection hole 9 diameter a is 70-90mm, and spacing is 1800-2200mm, a diameter of 15-30mm of fastener hole 11.
The present embodiment, when Specific construction, has following steps:
After step 1, subgrade construction complete, construct above roadbed concrete bed 1 and convex gear platform 4, lay sealing coat 2, sealing coat 2 material is geotextiles；
Step 2, sealing coat 2 top formed in step 1 lay the internal reinforcing bar of concrete press-casting layer 3, are arranged around resilient sleeper-bearing at the convex gear platform 4 formed, laid rail guidance tape 5 after completing；Fastener 7 and the laying of rail 6 is carried out after the laying completing track plates 5；
Step 3, laid in step 2 after track plates 5 periphery arrange that the template 12 of solidifying soil pressure note layer 3, template 12 are moved 80-120mm outside track plates 5 both sides and arranged, additionally both sides are close to track plates 5 and are arranged, template 12 is highly 300-350mm；
In pressure injection hole 9 in step 4, the track plates 5 laid in step 3, concrete is injected in pressurization, the minimum 0.1MPa of injection pressure, stop injecting concrete when step 3 China and foreign countries move when template 5 inner concrete arranged reaches 80-150mm higher than track plates 5 bottom surface value f, form concrete press-casting layer 3.
In track plates 5, two pressure injection holes 9 are injected simultaneously into concrete, if steam vent 8 pulp during pressure injection, use cotton yarn to block.After concrete press-casting completes, take out cotton yarn (if having), pour into mortar, arrange pressure injection hole 9 and steam vent 8 end face so that the smooth-going of track plates 5 end face is attractive in appearance.
Although referring to the drawings design and the embodiment of this utility model purpose being elaborated with above-described embodiment, but those of ordinary skill in the art will be consequently realised that, under the precondition limiting scope without departing from claim, still utility model can be made various modifications and variations, as: make the concrete shape of each parts, size and making material thereof etc., therefore repeat the most one by one at this.
Claims (4)
1. a plate-type ballastless ballast bed structure, it is characterized in that: described structure at least includes concrete bed, sealing coat, convex gear platform, concrete press-casting layer and track plates, described sealing coat is arranged between described concrete bed and described concrete press-casting layer, described convex gear platform is arranged on described concrete bottom seating face and through described sealing coat, and described track plates is fixedly installed between the described convex gear platform of adjacent two concrete beds；Steam vent, pressure injection hole and fastener hole is at least offered on described track plates.
A kind of plate-type ballastless ballast bed structure the most according to claim 1, it is characterised in that: be provided with vertically and horizontally wrong aerofluxus ditch in the bottom of described track plates, described aerofluxus ditch is connected with described steam vent.
A kind of plate-type ballastless ballast bed structure the most according to claim 1, it is characterised in that: the position that arranges of described convex gear platform is positioned at the middle part of described track plates, is filled with concrete between described track plates and described convex gear platform.
A kind of plate-type ballastless ballast bed structure the most according to claim 1, it is characterised in that: all it is disposed with reinforcing bar inside described concrete bed, described concrete press-casting layer and described track plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620337254.7U CN205617159U (en) | 2016-04-21 | 2016-04-21 | Board -like no tiny fragments of stone, coal, etc. railway roadbed structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620337254.7U CN205617159U (en) | 2016-04-21 | 2016-04-21 | Board -like no tiny fragments of stone, coal, etc. railway roadbed structure |
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| CN205617159U true CN205617159U (en) | 2016-10-05 |
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| CN201620337254.7U Active CN205617159U (en) | 2016-04-21 | 2016-04-21 | Board -like no tiny fragments of stone, coal, etc. railway roadbed structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638165A (en) * | 2016-11-09 | 2017-05-10 | 中铁局集团天津建设工程有限公司 | Railroad curve track and construction method thereof |
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2016
- 2016-04-21 CN CN201620337254.7U patent/CN205617159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638165A (en) * | 2016-11-09 | 2017-05-10 | 中铁局集团天津建设工程有限公司 | Railroad curve track and construction method thereof |
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