CN209686150U - A kind of soft rockmass railway bed - Google Patents
A kind of soft rockmass railway bed Download PDFInfo
- Publication number
- CN209686150U CN209686150U CN201920112649.0U CN201920112649U CN209686150U CN 209686150 U CN209686150 U CN 209686150U CN 201920112649 U CN201920112649 U CN 201920112649U CN 209686150 U CN209686150 U CN 209686150U
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- Prior art keywords
- subgrade
- sillar
- soft rockmass
- bedding
- bed
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- 239000010410 layer Substances 0.000 claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 21
- 239000002344 surface layer Substances 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 abstract description 18
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 description 39
- 239000004575 stone Substances 0.000 description 27
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Railway Tracks (AREA)
Abstract
A kind of soft rockmass railway bed, roadbed main body includes: ground, the following embankment of bedding, bottom layer of subgrade and surface layer of subgrade bed from the bottom to top, it is characterized in that: being also equipped between the following embankment of the bedding and ground by gravelly blotter；The following embankment of the bedding is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=15MPa fills to be formed；The bottom layer of subgrade is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=20MPa fills to be formed；The surface layer of subgrade bed is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=25MPa fills to be formed；Slope protection construction is provided in the side slope of the roadbed main body；And gutter is provided on the outside of slope foot.The utility model can make full use of the soft rockmass sillar of Along Railway, and purchase and the transportation cost of filler, cost saving is effectively reduced；Excavation spoir is significantly reduced simultaneously, lowers environmental pollution.
Description
Technical field
The utility model relates to a kind of railway beds.
Background technique
Railway bed is the basis of track, and main function is that the laying for meeting track, receiving track and train generate
Load provides the necessary condition of train operation.It is known as roadbed filling, the engineering properties of filler for filling roadbed rock-soil material
Quality directly influence the deformation and stabilization of roadbed, so the correct selection of roadbed filling, is the important of roadbed filling quality
Guarantee.
Railway bed design specification regulation: for speed per hour 160km and mixed passenger and freight railway below and axis weight 30t and following
Heavy haul railway, surface layer of subgrade bed are filled using graded broken stone or A group stone matter filler, and bottom layer of subgrade is filled using A, B group stone matter filler,
The following embankment of bedding is filled using A, B, C group stone matter filler or low-liquid-limit C group fine grained filler；For speed per hour 120km and with
Under mixed passenger and freight railway, surface layer of subgrade bed filled using A group and B1, B2 group stone matter filler, bottom layer of subgrade use A, B group and C1,
C2 group stone matter filler fills, and the following embankment of bedding is filled using A, B, C group stone matter filler or low-liquid-limit C group fine grained filler.
In soft rockmass (saturation uniaxial compressive strength Rc< 30MPa) widely distributed area, it cannot by the filler that soft rockmass is formed
Directly meet the requirement of specification.Filler usually need to be bought and transported from distant place, it will increase project cost, and local excavation spoir
It cannot efficiently use, can also bring environmental problem.
Utility model content
The goal of the invention of the utility model is to provide a kind of soft rockmass railway bed, which is suitable for soft rockmass and divides extensively
Cloth area, can make full use of the soft rockmass sillar of Along Railway, and purchase and the transportation cost of filler is effectively reduced, and save engineering and throw
Money；Excavation spoir is significantly reduced simultaneously, lowers environmental pollution.
The utility model realizes its goal of the invention the technical scheme adopted is that a kind of soft rockmass railway bed, roadbed master
Body includes: ground, the following embankment of bedding, bottom layer of subgrade and surface layer of subgrade bed from the bottom to top, it is characterized in that:
It is also equipped between the following embankment of the bedding and ground by gravelly blotter；
The following embankment of the bedding is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=15MPa fills shape
At；
The bottom layer of subgrade is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=20MPa fills to be formed；
The surface layer of subgrade bed is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=25MPa fills to be formed；
Slope protection construction is provided in the side slope of the roadbed main body；And gutter is provided on the outside of slope foot.
The course of work and application method of the utility model are:
A, the processing of ground
Shallow-layer compaction treatment is carried out to ground, makes its bearing capacity not less than 120kPa；
B, the laying of blotter
Selection partial size 75mm and rubble below are laid on ground, form the blotter of 400~600mm thickness；
C, bedding following embankment fills
Parent rock saturation uniaxial compressive strength R is used on blottercThe soft rockmass sillar of >=15MPa is as stone matter filler
It is filled, forms the following embankment of bedding of 0.5-12m thickness:
For speed per hour 160km and following mixed passenger and freight railway, if soft rockmass sillar is gravel or rubble, extremely by filling compaction
Coefficient of compaction K >=0.9, coefficient of subgrade reaction K30≥110MPa/m；If soft rockmass sillar is block stone, by filling compaction to coefficient of compaction K
>=0.9, coefficient of subgrade reaction K30≥130MPa/m；
For axis weight 30t and following heavy haul railway, then by filling compaction to coefficient of compaction K >=0.92, coefficient of subgrade reaction K30≥
130MPa/m；
D, bottom layer of subgrade fills
Parent rock saturation uniaxial compressive strength R is used on the following embankment of beddingcThe soft rockmass sillar of >=20MPa is as stone matter
Filler is filled, and bottom layer of subgrade is formed:
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.93, ground
COEFFICIENT K30>=130MPa/m, bottom layer of subgrade with a thickness of 1.9m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥
150MPa/m, bottom layer of subgrade with a thickness of 1.9m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥
150MPa/m, bottom layer of subgrade with a thickness of 2.3m；
E, surface layer of subgrade bed fills
Parent rock saturation uniaxial compressive strength R is used on bottom layer of subgradecThe soft rockmass sillar of >=25MPa is as stone matter filler
It is filled, forms surface layer of subgrade bed:
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.95, ground
COEFFICIENT K30>=150MPa/m, surface layer of subgrade bed with a thickness of 0.6m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥
190MPa/m, surface layer of subgrade bed with a thickness of 0.6m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥
190MPa/m, surface layer of subgrade bed with a thickness of 0.7m；
F, the building in slope protection construction and gutter
The slope protection construction of grid type skeleton is formed in the two sides cast-in-place concrete of roadbed main body, and is constructed in slope protection
Surface formed protrusion water retaining brim and perforation gutter channel；And longitudinal gutter is constructed on the outside of the slope foot of roadbed main body.
Compared with prior art, the utility model has the beneficial effects that
The blotter structure that the utility model is added makes subgrade drainage performance good, avoids water logging to roadbed mechanical property
The damage of energy ensure that the long-term secured, reliable of roadbed；The slope protection construction of grid type skeleton also strengthens the intensity of roadbed
With the performances such as waterproof.Also, the load type and power born according to different structure layer, layering propose the soft of different configuration layer
The parent rock saturation uniaxial compressive strength R of matter rock sillarc, coefficient of compaction K, coefficient of subgrade reaction K30With the controlling value of techonosphere thickness, from
And under the premise of meeting each layer mechanical property of roadbed, abundant, the reasonable utilization of soft rockmass sillar is realized.
In short, the utility model by the above measure, under the premise of guaranteeing roadbed safety, utilizes soft to greatest extent
Rock sillar is come the roadbed that constructs a railway.The area widely distributed suitable for soft rockmass, can gather materials on the spot, and the purchase of filler is greatly decreased
And transportation cost, hence it is evident that reduce the project cost of railway bed；Meanwhile also reduce and avoid dig pit generation soft rockmass abandon
Just, the problem of influencing environment.
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the cross-sectional configuration schematic diagram of the soft rockmass railway bed of the utility model embodiment.
Fig. 2 is the front view (the A direction view of Fig. 1) of the slope protection construction of the utility model embodiment.
Specific embodiment
Fig. 1-2 is shown, and a kind of specific embodiment of the utility model is a kind of soft rockmass railway bed, roadbed main body
It from the bottom to top include: ground 5, the following embankment 3 of bedding, bottom layer of subgrade 2 and surface layer of subgrade bed 1, it is characterized in that:
It is also equipped between the following embankment 3 of the bedding and ground 5 by gravelly blotter 4；
The following embankment 3 of the bedding is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=15MPa fills shape
At；
The bottom layer of subgrade 2 is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=20MPa fills to be formed；
The surface layer of subgrade bed 1 is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=25MPa fills to be formed；
Slope protection construction 6 is provided in the side slope of the roadbed main body；And gutter 7 is provided on the outside of slope foot.
A kind of construction method of above-mentioned soft rockmass railway bed, the steps include:
A, the processing of ground
Shallow-layer compaction treatment is carried out to ground 5, makes its bearing capacity not less than 120kPa；
B, the laying of blotter
Selection partial size 75mm and rubble below are laid on ground 5, form the blotter 4 of 400~600mm thickness；
C, bedding following embankment fills
Parent rock saturation uniaxial compressive strength R is used on blotter 4cThe soft rockmass sillar of >=15MPa is filled out as stone matter
Material is filled, and the following embankment 3 of bedding of 0.5-12m thickness is formed:
For speed per hour 160km and following mixed passenger and freight railway, if soft rockmass sillar is gravel or rubble, extremely by filling compaction
Coefficient of compaction K >=0.9, coefficient of subgrade reaction K30≥110MPa/m；If soft rockmass sillar is block stone, by filling compaction to coefficient of compaction K
>=0.9, coefficient of subgrade reaction K30≥130MPa/m；
For axis weight 30t and following heavy haul railway, then by filling compaction to coefficient of compaction K >=0.92, coefficient of subgrade reaction K30≥
130MPa/m；
D, bottom layer of subgrade fills
Parent rock saturation uniaxial compressive strength R is used on the following embankment 3 of beddingcThe soft rockmass sillar of >=20MPa is as stone
Matter filler is filled, and bottom layer of subgrade 2 is formed:
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.93, ground
COEFFICIENT K30>=130MPa/m, bottom layer of subgrade 2 with a thickness of 1.9m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥
150MPa/m, bottom layer of subgrade 2 with a thickness of 1.9m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥
150MPa/m, bottom layer of subgrade 2 with a thickness of 2.3m；
E, surface layer of subgrade bed fills
Parent rock saturation uniaxial compressive strength R is used on bottom layer of subgrade 2cThe soft rockmass sillar of >=25MPa is filled out as stone matter
Material is filled, and surface layer of subgrade bed 1 is formed:
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.95, ground
COEFFICIENT K30>=150MPa/m, surface layer of subgrade bed 1 with a thickness of 0.6m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥
190MPa/m, surface layer of subgrade bed 1 with a thickness of 0.6m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥
190MPa/m, surface layer of subgrade bed 1 with a thickness of 0.7m；
F, the building in slope protection construction and gutter
The slope protection construction 6 of grid type skeleton is formed in the two sides cast-in-place concrete of roadbed main body, and in slope protection structure
The surface made forms the water retaining brim 6a of protrusion and the gutter channel 6b of perforation；And longitudinal row is constructed on the outside of the slope foot of roadbed main body
Ditch 7.
Claims (1)
1. a kind of soft rockmass railway bed, roadbed main body includes: ground (5), the following embankment of bedding (3), bedding bottom from the bottom to top
Layer (2) and surface layer of subgrade bed (1), it is characterized in that:
It is also equipped between the following embankment of the bedding (3) and ground (5) by gravelly blotter (4)；
The following embankment of the bedding (3) is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=15MPa fills to be formed；
The bottom layer of subgrade (2) is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=20MPa fills to be formed；
The surface layer of subgrade bed (1) is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=25MPa fills to be formed；
Slope protection construction (6) is provided in the side slope of the roadbed main body；And gutter (7) are provided on the outside of slope foot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920112649.0U CN209686150U (en) | 2019-01-23 | 2019-01-23 | A kind of soft rockmass railway bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920112649.0U CN209686150U (en) | 2019-01-23 | 2019-01-23 | A kind of soft rockmass railway bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209686150U true CN209686150U (en) | 2019-11-26 |
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ID=68599951
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920112649.0U Expired - Fee Related CN209686150U (en) | 2019-01-23 | 2019-01-23 | A kind of soft rockmass railway bed |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109680564A (en) * | 2019-01-23 | 2019-04-26 | 西南交通大学 | A kind of soft rockmass railway bed and its construction method |
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2019
- 2019-01-23 CN CN201920112649.0U patent/CN209686150U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109680564A (en) * | 2019-01-23 | 2019-04-26 | 西南交通大学 | A kind of soft rockmass railway bed and its construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |