CN202755273U - Ballastless track high speed railway heat preservation and freeze protection subgrade structure - Google Patents
Ballastless track high speed railway heat preservation and freeze protection subgrade structure Download PDFInfo
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- CN202755273U CN202755273U CN2012204600364U CN201220460036U CN202755273U CN 202755273 U CN202755273 U CN 202755273U CN 2012204600364 U CN2012204600364 U CN 2012204600364U CN 201220460036 U CN201220460036 U CN 201220460036U CN 202755273 U CN202755273 U CN 202755273U
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- heat preservation
- insulation layer
- subgrade
- rail
- gutter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The utility model discloses a ballastless track high speed railway heat preservation and freeze protection subgrade structure. Heat preservation layers and a heat preservation plate are added on an original subgrade structure which is provided with a waterproof layer and a drainage ditch. The surface of the rail subgrade and the bottom side of the drainage ditch are respectively provided with a heat preservation layer, and the heat preservation plate is arranged below a base seat of a rail plate. The heat preservation layer arranged on the surface of the rail subgrade is placed under the waterproof layer covering the subgrade surface. The heat preservation layer comprises a heat preservation layer between rail base seats and heat preservation layers outside the rail base seats. The heat preservation layer arranged on the bottom side of the drainage ditch comprises a drainage ditch bottom heat preservation layer and drainage ditch side heat preservation layers. The heat preservation plate arranged below the base seat of the rail plate is placed inside a cavity reinforced concrete structure in the subgrade below the base seat of the rail plate. The thickness of the heat preservation layers and the heat preservation plate ranges from 3 centimeters to 10 centimeters. The ballastless track high speed railway heat preservation and freeze protection subgrade structure achieves heat preservation to the subgrade whether to the portion directly bearing train load or to the portion indirectly bearing the train load, and avoids frost heaving and deformation of the subgrade.
Description
Technical field
The utility model relates to railway subgrade works, especially relates to the heat-preserving anti-freezing road structure of ballastless track of high-speed railway.
Background technology
The non-fragment orbit high-speed railway requires very high for subgrade deformation, sedimentation and deformation requires to be controlled in the 15mm, and the protuberance distortion should be in 5mm.Based on these strict limit values, in a single day the road bed water of infiltration arranged at the non-fragment orbit bottom, just may cause that frost heave melts, and moves in circles to produce sedimentation or protuberance distortion, and exceeding above-mentioned limit value will normally run generation harm to bullet train.The antifreeze design of cold district ballastless track roadbed is particularly important.
At present, the antifreeze design of cold district non-fragment orbit high-speed railway subgrade mainly is at road bed waterproofing course to be set, and in the roadbed both sides gutter is set, and the surface water that the track bottom is infiltrated can flow away smoothly, prevents frost heave.
Fig. 1 shows the road structure of the ballastless track of high-speed railway of prior art.As shown in Figure 1, track plates 1 is arranged on the track plates base 3, and the track plates base is for 3 times roadbed 7.Roadbed 7 adopts the coarse granule filler with good filter drainage performance, and table covers the waterproofing course of one deck bituminous concrete, and the waterproofing course that roadbed 7 tables cover comprises chassis outer side waterproofing course 2 and interorbital waterproofing course 4.Chassis outer side waterproofing course 2 places on the curb in track plates base 3 outsides, and interorbital waterproofing course 4 places between the track plates base of up-downgoing track.The road bed water that the track bottom is infiltrated is discharged in the gutter 5 by the spilled water hole 6 between the gutter 5 in roadbed 7 and the roadbed outside by the coarse granule filler of roadbed 7 again, prevents water frost heave in roadbed 7 that the track bottom is infiltrated.
The High Speed Railway Subgrade of prior art remains in some problems in antifreeze design: ooze although the waterproofing course of road bed can significantly reduce under the surface water, but between the track plates base, between track plates base and the waterproofing course, all have structural joint between waterproofing course and the gutter, a small amount of water is unavoidably along oozing under the slit, under cryogenic conditions, water leaking-in also may freeze in the white-out process, frost-heaving deformation still exists, therefore, still there is certain engineering risk in this structure at severe cold area.
Summary of the invention
Still exist infiltration to freeze problem with frost-heaving deformation for the antifreeze design of the ballastless track of high-speed railway road structure of prior art, the utility model has been released a kind of heat-preserving anti-freezing road structure, by on the track bed face, the heat insulating material that arranges under bottom side, gutter and the track plates base, realize the comprehensive insulation to roadbed, avoided the roadbed frost heave.
The non-fragment orbit high-speed railway heat-preserving anti-freezing road structure that the utility model relates to comprises: the insulation layer that on the track bed face and bottom side, gutter arranges, the warming plate that arranges under the track plates base.
The insulation layer that arranges on the track bed face places under the waterproofing course that the roadbed table covers, the insulation layer that arranges on the track bed face comprises insulation layer and rail bed outside insulation layer between rail bed, and the insulation layer that the bottom side, gutter arranges comprises gutter bottom insulation layer and side, gutter insulation layer.
The warming plate that arranges under the track plates base places in the cavity reinforced concrete structure of roadbed under the track plates base.
The material that insulation layer and warming plate adopt is the heat-insulating materials such as rubber and plastic, glass wool.Insulation layer and warming plate thickness are according to the depth of frost penetration design of non-fragment orbit region of living in, and thickness is 3-10cm.
Insulation layer is arranged on and is not subjected to the direct acting position of train load, comprises between rail bed, on the chassis outer side road bed and gutter side direction and bottom.Insulation layer top between rail bed, bottom on the chassis outer side road bed and the gutter arranges the bituminous concrete topping, to improve durable and ageing resistace.
Warming plate is being subjected under the direct acting rail bed plate of train load, is arranged under the rail bed plate in the cavity reinforced concrete structure in the roadbed.Utilize reinforced concrete structure intensity to bear track and train load, simultaneously warming plate is carried out closed protective.
The non-fragment orbit high-speed railway heat-preserving anti-freezing road structure that the utility model relates to is to directly bearing the train load position or directly do not bear the train load position and all realized insulation to roadbed, avoiding the roadbed frost-heaving deformation.
Description of drawings
Fig. 1 is existing ballastless track of high-speed railway roadbed design structural representation.
Fig. 2 is ballastless track of high-speed railway heat-preserving anti-freezing structural representation of the present utility model.
Description of symbols among the figure
1, track plates 2, chassis outer side waterproofing course
3, track plates base 4, interorbital waterproofing course
5, gutter 6, spilled water hole
7, roadbed 8, cavity reinforced concrete structure
9, warming plate 10, rail bed outside insulation layer
11, insulation layer 12, bottom, gutter insulation layer between rail bed
13, the outside, gutter insulation layer
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is further specified.Fig. 2 has shown the non-fragment orbit high-speed railway heat-preserving anti-freezing road structure that the utility model relates to, as shown in Figure 2, described heat-preserving anti-freezing road structure is set up insulation layer and warming plate 9 at the former road structure that is provided with waterproofing course and gutter 5, on the track bed face, with the bottom side, gutter insulation layer is set, warming plate 9 is set under the track plates base.
The insulation layer that arranges on the track bed face places under the waterproofing course that the roadbed table covers, and comprises insulation layer 11 and rail bed outside insulation layer 10 between rail bed, and the insulation layer that the bottom side, gutter arranges comprises gutter bottom insulation layer 12 and side, gutter insulation layer 13.The thickness of insulation layer 11, rail bed outside insulation layer 10, gutter bottom insulation layer 12 and side, gutter insulation layer 13 is 3-10cm between rail bed.
The top of insulation layer 11 and the outside, gutter insulation layer 13 arranges the bituminous concrete topping between rail bed outside insulation layer 10, rail bed.
The warming plate 9 that arranges under the track plates base places in the cavity reinforced concrete structure 8 of 3 times roadbeds 7 of track plates base, and the thickness of warming plate 9 is 3-10cm.
Claims (3)
1. a non-fragment orbit high-speed railway heat-preserving anti-freezing road structure is characterized in that, comprise on the track bed face and insulation layer that the bottom side, gutter arranges, track plates base under the warming plate that arranges; The insulation layer that arranges on the track bed face places under the waterproofing course that the roadbed table covers, the insulation layer that arranges on the track bed face comprises insulation layer and rail bed outside insulation layer between rail bed, and the insulation layer that the bottom side, gutter arranges comprises gutter bottom insulation layer and side, gutter insulation layer; The warming plate that arranges under the track plates base places in the cavity reinforced concrete structure of roadbed under the track plates base.
2. non-fragment orbit high-speed railway heat-preserving anti-freezing road structure according to claim 1 is characterized in that, the top of insulation layer and the outside, gutter insulation layer arranges the bituminous concrete topping between rail bed outside insulation layer, rail bed.
3. non-fragment orbit high-speed railway heat-preserving anti-freezing road structure according to claim 1, it is characterized in that, the thickness of insulation layer, rail bed outside insulation layer, bottom, gutter insulation layer, side, gutter insulation layer and the interior warming plate of roadbed cavity reinforced concrete structure is respectively 3-10cm between rail bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204600364U CN202755273U (en) | 2012-09-11 | 2012-09-11 | Ballastless track high speed railway heat preservation and freeze protection subgrade structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204600364U CN202755273U (en) | 2012-09-11 | 2012-09-11 | Ballastless track high speed railway heat preservation and freeze protection subgrade structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202755273U true CN202755273U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204600364U Expired - Lifetime CN202755273U (en) | 2012-09-11 | 2012-09-11 | Ballastless track high speed railway heat preservation and freeze protection subgrade structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN202755273U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032631A (en) * | 2014-07-01 | 2014-09-10 | 陈志新 | Method for maintaining and handling railway ballastless track with frost heaving |
| CN104278598A (en) * | 2014-09-22 | 2015-01-14 | 东南大学 | Self-compacting bituminous concrete waterproof seal and construction method thereof |
| CN111945485A (en) * | 2020-08-12 | 2020-11-17 | 中铁八局集团第二工程有限公司 | High-speed railway roadbed with vibration damping and freezing prevention functions |
-
2012
- 2012-09-11 CN CN2012204600364U patent/CN202755273U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032631A (en) * | 2014-07-01 | 2014-09-10 | 陈志新 | Method for maintaining and handling railway ballastless track with frost heaving |
| CN104278598A (en) * | 2014-09-22 | 2015-01-14 | 东南大学 | Self-compacting bituminous concrete waterproof seal and construction method thereof |
| CN104278598B (en) * | 2014-09-22 | 2016-08-24 | 东南大学 | A kind of self-compaction bituminous concrete water-protected enclosure layer and construction method thereof |
| CN111945485A (en) * | 2020-08-12 | 2020-11-17 | 中铁八局集团第二工程有限公司 | High-speed railway roadbed with vibration damping and freezing prevention functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300142 Hebei District, Zhongshan Road, No. 10, Patentee after: CHINA RAILWAY DESIGN Corp. Address before: 300142 Hebei District, Zhongshan Road, No. 10, Patentee before: THE THIRD RAILWAY SURVEY AND DESIGN INSTITUTE Group Corp. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
|
| CX01 | Expiry of patent term |