CN208830060U - The contact layer structure of non-fragment orbit and surface layer of subgrade bed - Google Patents
The contact layer structure of non-fragment orbit and surface layer of subgrade bed Download PDFInfo
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- CN208830060U CN208830060U CN201820754278.1U CN201820754278U CN208830060U CN 208830060 U CN208830060 U CN 208830060U CN 201820754278 U CN201820754278 U CN 201820754278U CN 208830060 U CN208830060 U CN 208830060U
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Abstract
The utility model discloses the contact layer structures and its laying method of non-fragment orbit and surface layer of subgrade bed.The non-fragment orbit includes the base plate and confining bed above the surface layer of subgrade bed, the confining bed is located at the two sides of the base plate transverse direction, and the contact layer structure includes being set to the rubble adhesive layer between the surface layer of subgrade bed and the base plate and confining bed, the first adhesive layer, the first waterproof construction between first adhesive layer and base plate and the second waterproof construction between first adhesive layer and confining bed positioned at rubble adhesive layer upper surface；The rubble adhesive layer includes the polymeric adhesive of the first metalling with the rubble gap for being filled in first metalling.As it can be seen that the structure of the contact layer structure of the non-fragment orbit and surface layer of subgrade bed of the utility model is simple, it can effectively solve the problems, such as that bedding frost boiling and base plate-surface layer of subgrade bed interlayer vibration contact are even come to nothing.
Description
Technical field
The utility model relates to the technical fields of non-fragment orbit, in particular to ballastless track structure and without tiny fragments of stone, coal, etc. rail
The contact layer structure in road and surface layer of subgrade bed.
Background technique
Domestic and international high-speed rail operating practice shows: as the service time constantly increases, in Complex Natural Environment and bullet train
Under impact load repeated action, the defect phenomenons such as damage, destruction, engineering knot under line will inevitably occur in ballastless track roadbed
Structure defect and disease gradually appear in non-fragment orbit route.Both wired route more than sum 8% exists China express railway
Various subgrade bed diseases, the task of Treatment of Railway Roadbed Diseases are very arduous.If developing as one pleases, it would be possible to reduce high rail
Stability, ride comfort and the bearing capacity of road structure, seriously affect bullet train riding quality and traffic safety.In high-speed railway
In ballastless track roadbed spatial multi structural system, non-fragment orbit rigid structure and bedding bulk solid flexible media contact layer are more
Weakness, working environment is complicated, under the long term of the engineering factors such as high circular frequency Train induced load and water, graded broken stone micro-structure
Damage aggravation causes non-fragment orbit bedding contact condition to deteriorate, and interlayer power performance is caused to be degraded.Currently, having opened the height of operation
Fast rail track, base plate are all placed directly within above graded broken stone surface layer, during long-term operation, base plate and confining bed side
Seam and expansion joint closed material season cracking, surface water penetrate into inside roadbed, lead to that following disease: non-fragment orbit base has occurred
Bed frost boiling and base plate-surface layer of subgrade bed interlayer vibration contact are even come to nothing, and the maintenance cost during railway operation, shadow are increased
The ride comfort and comfort of railway have been rung, or even has threatened the operation security of train.
Non-fragment orbit bedding contact layer is in good working order and is to ensure that soil property ballastless track roadbed line security is transported
The key of battalion.The design period of China express railway infrastructure system is 100 years, the coarse grained mechanical property of foundation bed structure,
The especially long-term work performance of non-fragment orbit rigid structure and the special contact layer of bulk solid medium, is directly related to train operation
Safety, comfort and railway maintenance cost.
2 layers of structure that Subgrade Bed of High-speed Railway is made of surface layer of subgrade bed and bottom layer of subgrade.Surface layer of subgrade bed is that roadbed is straight
The part for bearing train load is connect, and is commonly referred to as the bearing bed or supporting course of roadbed.Practice have shown that the superiority and inferiority pair of surface layer of subgrade bed
Track deformation influences very big.Track deformation caused by bad surface layer of subgrade bed is the several times of good surface layer of subgrade bed, and its gap with
The raising of speed and increase.
Utility model content
The main purpose of the utility model is to provide the contact layer structures and its laying side of non-fragment orbit and surface layer of subgrade bed
Method, to solve the problems, such as that bedding frost boiling existing in the prior art and base plate-surface layer of subgrade bed interlayer vibration contact are even come to nothing.
To achieve the goals above, one aspect according to the present utility model provides a kind of non-fragment orbit and bedding table
The contact layer structure of layer.The non-fragment orbit includes the base plate and confining bed above the surface layer of subgrade bed, the closing
Layer is located at the two sides of the base plate transverse direction, and the contact layer structure includes being set to the surface layer of subgrade bed and the base plate and envelope
Close rubble adhesive layer between layer, positioned at rubble adhesive layer upper surface the first adhesive layer, be set to first adhesive layer
The first waterproof construction between base plate and the second waterproof construction between first adhesive layer and confining bed；Institute
State the polymeric adhesive that rubble adhesive layer includes the first metalling with the rubble gap for being filled in first metalling.
Firstly, the contact layer structure has rubble adhesive layer, it can be used as the structure sheaf of closing surface layer of subgrade bed, prevent rainwater
Equal surface water penetrate into inside roadbed；The rubble adhesive layer have cross section spread structure entirely, can preferably uniformly, diffusion-induced stress,
Protect bedding surface layer in good service state.Secondly, the contact layer has the first adhesive layer, the first waterproof knot can be reinforced
It is bonding between structure and the second waterproof construction and rubble adhesive layer, promote the stability of contact layer structure.Furthermore described first is anti-
Water-bound can solve off-seam problem caused by base plate acts on lower body warpage in temperature stress；Confining bed is existing no tiny fragments of stone, coal, etc. rail
The component part of road structure, main function are closing roadbeds, prevent surface water from penetrating into inside roadbed, but traditional confining bed by
Cement concrete or bituminous concrete are constituted, and barrier performance is poor, and the second waterproof construction can be rectangular under confining bed
Prevent water from penetrating into surface layer of subgrade bed for excluding to penetrate into the surface water of confining bed at drainage channel.As it can be seen that the nothing of the utility model
The structure of the contact layer structure of tiny fragments of stone, coal, etc. track and surface layer of subgrade bed is simple, can effectively solve bedding frost boiling and base plate-surface layer of subgrade bed
The problem of interlayer vibration contact is even come to nothing.Common ballastless track roadbed structure further includes being sequentially arranged in below surface layer of subgrade bed
Waterproof layer and bottom layer of subgrade.Common ballastless track structure further includes the track plates and rail being sequentially arranged in above base plate.
Further, the surface layer of subgrade bed includes the second metalling, and the contact layer structure further includes being filled in described the
The polymeric adhesive in the rubble gap of two metallings and the second adhesive layer positioned at second metalling upper surface.As a result,
It is not only bonding between reinforcement base surface layer and rubble adhesive layer, the stability of contact layer structure is promoted, and be filled in described
The polymeric adhesive of second rubble lamellar spacing is bonded rubble, to further promote the stability of the second metalling.
Further, second metalling is accumulated by the second level with rubble, is passed through in second graded broken stone
Mesh size is rubble mass fraction >=58% of the sieve of 7.1mm.The bearing capacity of surface layer of subgrade bed is promoted as a result,.
Further, first adhesive layer and the second adhesive layer include polymeric adhesive.Bonding effect is promoted as a result,
Fruit.
Further, the polymeric adhesive is emulsified asphalt, polyurethane or epoxy resin.Adhesive effect is good as a result,
And it easily obtains.
Further, first waterproof construction is composite earthwork cloth；The objects such as composite earthwork cloth tension, tear-proof, bursting
It is high to manage mechanical performance index, has intensity high, extension property is preferable, and deformation modulus is big, acid and alkali-resistance, anticorrosive, ageing-resistant, antiseepage
The features such as performance is good can effectively solve the problems, such as base plate off-seam caused by temperature stress effect lower body warpage.Described
Two waterproof constructions are two layers of geotextiles, and drainage effect is good as a result,.
Further, the rubble adhesive layer with a thickness of 0.5-2.5cm；First metalling is by the first graded broken stone
It accumulates, passes through rubble mass fraction >=50% for the sieve that mesh size is 1.18mm in first graded broken stone.By
This, the effect that rubble adhesive layer closes surface layer of subgrade bed is good, can be in good service state with effective protection surface layer of subgrade bed.
To achieve the goals above, other side according to the present utility model additionally provides a kind of non-fragment orbit and base
The laying method of the contact layer structure on bed surface layer.The laying method of the contact layer structure of the non-fragment orbit and surface layer of subgrade bed include with
Lower step:
1) polymeric adhesive is poured into the rubble gap of the second metalling；
2) polymeric adhesive then is dispensed in the upper surface of the second metalling, forms the second adhesive layer；
3) the first metalling is then laid on the second adhesive layer；
4) polymeric adhesive is poured into the rubble gap of first metalling, i.e., the shape on second adhesive layer
At rubble adhesive layer；
5) polymeric adhesive is dispensed in the upper surface of the rubble adhesive layer, that is, forms the first adhesive layer；
6) the first waterproof construction and the second waterproof construction are laid with；
7) base plate is laid on first waterproof construction；Confining bed is laid on second waterproof construction.
The simple process of the laying method of the contact layer structure of the non-fragment orbit and surface layer of subgrade bed, can not only promote bedding
The intensity on surface layer, and contact layer structure can be formed between the surface layer of subgrade bed and the base plate and confining bed, this connects
Contact layer can prevent surface water from penetrating into inside roadbed, solve bedding frost boiling and base plate-surface layer of subgrade bed interlayer vibration contact even
It comes to nothing, significantly reduces the maintenance cost during railway operation, promote operation security.
Further, the spread quantity of the polymeric adhesive in step 2) is 0.7-1.5L/m2.Thus, it is ensured that after spread
The second metalling certain depth can be penetrated into, and surface does not form trickling, or forms oil film.
Further, first adhesive layer with a thickness of 0.3-0.6cm.Adhesive effect is good as a result,.
As it can be seen that the structure of the contact layer structure of the non-fragment orbit and surface layer of subgrade bed of the utility model is simple, can effectively solve
The problem of certainly bedding frost boiling and base plate-surface layer of subgrade bed interlayer vibration contact are even come to nothing.The non-fragment orbit and surface layer of subgrade bed
The simple process of the laying method of contact layer structure can not only promote the intensity of surface layer of subgrade bed, but also can be in the bedding
Contact layer structure is formed between surface layer and the base plate and confining bed, which can prevent surface water from penetrating into roadbed
Portion significantly reduces the maintenance cost during railway operation, promotes operation security.
The utility model is described further with reference to the accompanying drawings and detailed description.The utility model is additional
Aspect and advantage will be set forth in part in the description, and partially will become apparent from the description below, or practical by this
Novel practice is recognized.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to assist understanding to the utility model, provided in attached drawing
Content and its related explanation can be used for explaining the utility model in the present invention, but is not constituted to the utility model not
Work as restriction.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the non-fragment orbit of the utility model embodiment 1 and the contact layer structure of surface layer of subgrade bed.
Fig. 2 is the enlarged drawing in Fig. 1 at A.
Fig. 3 is the structural schematic diagram of the non-fragment orbit of the utility model embodiment 2 and the contact layer structure of surface layer of subgrade bed.
Related label in above-mentioned attached drawing are as follows:
1: surface layer of subgrade bed；
2: base plate；
3: confining bed；
4: rubble adhesive layer；
5: the first adhesive layers；
6: the first waterproof constructions；
7: the second waterproof constructions；
8: the second adhesive layers.
Specific embodiment
Clear, complete explanation is carried out to the utility model with reference to the accompanying drawing.Those of ordinary skill in the art are being based on
The utility model will be realized in the case where these explanations.Before being illustrated in conjunction with attached drawing to the utility model, spy is needed
It is not pointed out that:
The technical solution provided in each section including following the description and technical characteristic in the utility model,
In the case where not conflicting, these technical solutions and technical characteristic be can be combined with each other.
In addition, the embodiments of the present invention being related in following the description are generally only the reality of the utility model a part
Example is applied, instead of all the embodiments.Therefore, based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, the model of the utility model protection all should belong to
It encloses.
About term in the utility model and unit.The specification and claims of the utility model and related part
In term " includes ", " having " and their any deformation, it is intended that cover and non-exclusive include.
Embodiment 1
The contact layer structure of non-fragment orbit and surface layer of subgrade bed as shown in Figs. 1-2, the non-fragment orbit include positioned at described
The base plate 2 and confining bed 3 of 1 top of surface layer of subgrade bed, the confining bed 3 are located at the lateral two sides of the base plate 2, the contact layer
Structure includes the rubble adhesive layer 4 being set between the surface layer of subgrade bed 1 and the base plate 2 and confining bed 3, is located at the rubble
First adhesive layer 5 of 4 upper surface of adhesive layer, the first waterproof construction 6 between first adhesive layer 5 and base plate 2 with
And the second waterproof construction 7 between first adhesive layer 5 and confining bed 3；The rubble adhesive layer 4 includes the first rubble
The polymeric adhesive of layer and the rubble gap for being filled in first metalling.
First adhesive layer 5 includes polymeric adhesive.
Polymeric adhesive in first adhesive layer 5 is epoxy resin；It is described to be filled in first metalling
The polymeric adhesive in rubble gap is polyurethane.
First waterproof construction 6 is composite earthwork cloth；Second waterproof construction 7 is two layers of geotextiles.
The rubble adhesive layer 4 with a thickness of 2cm；First metalling is accumulated by the first order with rubble, this
The proportion of one graded broken stone specifically: the rubble mass fraction for the sieve for being 9.5mm by mesh size is 100%, passes through net
The rubble mass fraction for the sieve that hole size is 4.75mm is 95%, passes through the rubble quality for the sieve that mesh size is 2.36mm
Score is 70%, and the rubble mass fraction for the sieve for being 1.18mm by mesh size is 50%, is by mesh size
The rubble mass fraction of the sieve of 0.6mm is 36%, and the rubble mass fraction for the sieve for being 0.3mm by mesh size is
25%, the rubble mass fraction for the sieve for being 0.15mm by mesh size is 17%, the sieve for being 0.075mm by mesh size
The rubble mass fraction of net is 9%.
The surface layer of subgrade bed 1 includes the second metalling, and second metalling is accumulated by the second level with rubble, thick
Degree is 40cm.The proportion of second graded broken stone specifically: the rubble mass fraction for the sieve for being 45mm by mesh size is
100%, the rubble mass fraction for the sieve for being 31.5mm by mesh size is 91%, the sieve for being 22.4mm by mesh size
The rubble mass fraction of net is 79%, and the rubble mass fraction for the sieve for being 7.1mm by mesh size is 58%, passes through mesh
The rubble mass fraction for the sieve that size is 1.7mm is 29.5%, passes through the rubble quality for the sieve that mesh size is 0.5mm
Score is 19.5%, and the rubble mass fraction for the sieve for being 0.1mm by mesh size is 5.5%.
The laying method of the contact layer structure of the non-fragment orbit and surface layer of subgrade bed, comprising the following steps:
1) the first metalling is laid on the second metalling；
2) polyurethane is dispensed on first metalling, polyurethane is made to be sufficient filling with the rubble gap of the first metalling,
Rubble adhesive layer 4 is formed i.e. on the surface layer of subgrade bed 1；
3) epoxy resin is dispensed on rubble adhesive layer 4, forms the first adhesive layer 5 with a thickness of 0.3-0.6cm；
4) the first waterproof construction 6 and the second waterproof construction 7 are laid with；
5) base plate 2 is laid on first waterproof construction 6；Confining bed 3 is laid on second waterproof construction 7.
Embodiment 2
Compared with Example 1, the difference that the non-fragment orbit of the present embodiment and the contact layer structure of surface layer of subgrade bed have is: such as
Shown in Fig. 3, the contact layer structure further includes polymeric adhesive and the position for being filled in the rubble gap of second metalling
The second adhesive layer 8 in second metalling upper surface.Second adhesive layer 8 be filled in second rubble lamellar spacing
Polymeric adhesive be emulsified asphalt.
The laying method of the contact layer structure of the non-fragment orbit and surface layer of subgrade bed the following steps are included:
1) emulsified asphalt is dispensed on the second metalling, the spread quantity of emulsified asphalt is 1.2L/m2, emulsified asphalt a part
The gap of the second metalling is penetrated into, a part solidifies in the upper surface of the second metalling, forms the second adhesive layer 8；
2) the first metalling then is laid on the second adhesive layer 8；
3) polyurethane is dispensed on first metalling, polyurethane is made to be sufficient filling with the rubble gap of the first metalling,
Rubble adhesive layer 4 is formed i.e. on the surface layer of subgrade bed 1；
4) epoxy resin is dispensed on rubble adhesive layer 4, forms the first adhesive layer 5 with a thickness of 0.5cm；
5) the first waterproof construction 6 and the second waterproof construction 7 are laid with；
6) base plate 2 is laid on first waterproof construction 6；Confining bed 3 is laid on second waterproof construction 7.
Embodiment 3
Compared with Example 2, the laying method of the contact layer structure of the non-fragment orbit and surface layer of subgrade bed of the present embodiment has
Difference be: 1) dispense emulsified asphalt on the second metalling, the spread quantity of emulsified asphalt is 1L/m2, penetrate into emulsified asphalt
The gap of second metalling；After bitumen solidification to be emulsified, polyurethane is dispensed in the upper surface of the second metalling, to urethane cures
The second adhesive layer 8 is formed afterwards；
The related content of the utility model is illustrated above.Those of ordinary skill in the art are being based on these explanations
In the case where will realize the utility model.Above content based on the utility model, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, the model of the utility model protection all should belong to
It encloses.
Claims (6)
1. the contact layer structure of non-fragment orbit and surface layer of subgrade bed, the non-fragment orbit includes the bottom above surface layer of subgrade bed (1)
Seat board (2) and confining bed (3), the confining bed (3) are located at the two sides of the base plate (2) transverse direction, it is characterised in that: described to connect
Contact layer structure include set between the surface layer of subgrade bed (1) and the base plate (2) and confining bed (3) rubble adhesive layer (4),
Positioned at rubble adhesive layer (4) upper surface the first adhesive layer (5), be set to first adhesive layer (5) and base plate (2) it
Between the first waterproof construction (6) and be set to the second waterproof construction (7) between first adhesive layer (5) and confining bed (3)；
The rubble adhesive layer (4) includes the polymeric adhesion of the first metalling with the rubble gap for being filled in first metalling
Agent.
2. the contact layer structure of non-fragment orbit as described in claim 1 and surface layer of subgrade bed, it is characterised in that: the surface layer of subgrade bed
It (1) include the second metalling, the contact layer structure further includes the macromolecule for being filled in the rubble gap of second metalling
Bonding agent and the second adhesive layer (8) positioned at second metalling upper surface.
3. the contact layer structure of non-fragment orbit as claimed in claim 2 and surface layer of subgrade bed, it is characterised in that: first bonding
Layer (5) and the second adhesive layer (8) include polymeric adhesive.
4. the contact layer structure of non-fragment orbit and surface layer of subgrade bed as described in one of claim 1-3, it is characterised in that: the height
Molecular adhesion agent is emulsified asphalt, polyurethane or epoxy resin.
5. the contact layer structure of non-fragment orbit and surface layer of subgrade bed as described in one of claim 1-3, it is characterised in that: described
One waterproof construction (6) is composite earthwork cloth；Second waterproof construction (7) is two layers of geotextiles.
6. the contact layer structure of non-fragment orbit and surface layer of subgrade bed as described in one of claim 1-3, it is characterised in that: described broken
Stone adhesive layer (4) with a thickness of 0.5-2.5cm；First metalling is accumulated by the first order with rubble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820754278.1U CN208830060U (en) | 2018-05-21 | 2018-05-21 | The contact layer structure of non-fragment orbit and surface layer of subgrade bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820754278.1U CN208830060U (en) | 2018-05-21 | 2018-05-21 | The contact layer structure of non-fragment orbit and surface layer of subgrade bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208830060U true CN208830060U (en) | 2019-05-07 |
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ID=66304669
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820754278.1U Expired - Fee Related CN208830060U (en) | 2018-05-21 | 2018-05-21 | The contact layer structure of non-fragment orbit and surface layer of subgrade bed |
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| CN (1) | CN208830060U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842521A (en) * | 2018-05-21 | 2018-11-20 | 西南交通大学 | The contact layer structure and its laying method of non-fragment orbit and surface layer of subgrade bed |
| CN111424469A (en) * | 2019-11-19 | 2020-07-17 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Waterproof structure in ballastless track of roadbed, construction method and application |
-
2018
- 2018-05-21 CN CN201820754278.1U patent/CN208830060U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842521A (en) * | 2018-05-21 | 2018-11-20 | 西南交通大学 | The contact layer structure and its laying method of non-fragment orbit and surface layer of subgrade bed |
| CN111424469A (en) * | 2019-11-19 | 2020-07-17 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Waterproof structure in ballastless track of roadbed, construction method and application |
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