CN107142794B - Railway bed method of construction - Google Patents
Railway bed method of construction Download PDFInfo
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- CN107142794B CN107142794B CN201611000351.8A CN201611000351A CN107142794B CN 107142794 B CN107142794 B CN 107142794B CN 201611000351 A CN201611000351 A CN 201611000351A CN 107142794 B CN107142794 B CN 107142794B
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- raw material
- broken stone
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 35
- 239000004575 stone Substances 0.000 claims abstract description 32
- 230000002528 anti-freeze Effects 0.000 claims abstract description 29
- 108010053481 Antifreeze Proteins Proteins 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000003673 groundwater Substances 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims description 18
- 239000004568 cement Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 235000015110 jellies Nutrition 0.000 claims description 8
- 239000008274 jelly Substances 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 6
- 230000008014 freezing Effects 0.000 claims description 6
- 238000007710 freezing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000113 methacrylic resin Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 235000013339 cereals Nutrition 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 235000011128 aluminium sulphate Nutrition 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Railway Tracks (AREA)
Abstract
The present invention relates to a kind of railway bed methods of construction.Method includes the following steps: step 1: obtaining the ground water content in construction area；Step 2: bottom anti-freeze expansion layer, graded broken stone layer and top anti-freeze expansion layer are successively successively filled upwards on the ground in the construction area；In the step 2, the graded broken stone layer is by including that the raw material of first kind gravel particle, partial size second class gravel particle less than 0.5mm and binder of the partial size between 0.5mm-30mm is made, wherein, by weight, content of the second class gravel particle in the raw material is between 6%-30%.In the method for the invention, the fine grain content range in raw material is expanded, convenient for construction.
Description
Technical field
The present invention relates to geotechnical engineering fields, more particularly to a kind of railway bed method of construction.
Background technique
High-speed railway (being often referred to train of the speed per hour more than speed per hour 350km/h) is the trend of world's high-speed transit development,
The Development of High Speed Railway in especially China is very fast.
However, in the area such as northeast, the northwest in China, there is Permafrost Areas and frozen ground regions.At these
The roadbed frost damage that Frozen Ground Area occurs can bring very big adverse effect to high-speed railway.In the prior art, to high-speed railway
Certain frozen prevention measures are taken, such as: the grade that fine grained is less than or equal to 5% weight content is filled in the deep range of jelly of roadbed
With rubble.However, in the construction process, it is difficult to accurately control fine grain content in graded broken stone, this leads to railway bed
Still it will appear and freeze account phenomenon.
Summary of the invention
In view of the above-mentioned problems, the invention proposes a kind of railway bed methods of construction.In the method for the invention, it expands
Fine grain content range in raw material, convenient for construction.
Railway bed method of construction according to the present invention, comprising the following steps: step 1: the ground for obtaining construction area contains
Water；Step 2: bottom anti-freeze expansion layer, graded broken stone layer and top anti-freeze expansion are successively successively filled upwards on the ground in construction area
Layer.In step 2, graded broken stone layer is by including that first kind gravel particle, partial size of the partial size between 0.5mm-30mm are less than
The second class gravel particle of 0.5mm and the raw material of binder are made.By weight, the content of the second class gravel particle in the feed
Between 5%-30%.
In the method for the invention, in the feed, second class gravel particle of the partial size less than 0.5mm (is equal to existing skill
Fine grained in art) content between 6%-30%, such as can for 7%-30%, 8%-30%, 10%-30%, 15%,
18%, 19%, 20%-30%.That is, with the content in graded broken stone in the prior art, the raw material of the method for the present invention
In fine grain content range it is bigger.During constructing graded broken stone layer, the second class gravel particle can be glued by binder
Form biggish particle, to avoid the roadbed frost damage as caused by the fine grained in graded broken stone.In the construction process, Neng Goufei
Often easily accurate formulation is at this raw material, to help avoid by roadbed frost damage caused by material factor.It should be understood that
It is that " partial size is less than 0.5mm " does not simultaneously include the null situation of partial size.In addition, bottom anti-freeze expansion layer and top anti-freeze expansion layer are all these
The technical staff in field is readily comprehensible, such as bottom anti-freeze expansion layer can be A, B group soil, and top anti-freeze expansion layer can be concrete layer.
In one embodiment, by weight, binder includes cement, content in the feed between 5%-7%,
Surplus is first kind gravel particle.The gravel particle that partial size is less than 0.5mm can effectively be bonded together and be formed by cement
Bulky grain.In addition, these small gravel particles play dispersion-strengthened action to the cement after hardening, so that being formed by bulky grain
Intensity with higher helps to improve the intensity of roadbed.Excessive cement can't further roadbed intensity, or even can make
The intensity of roadbed is layered and damaged in cement slurry at first kind gravel particle during constructing and the second class gravel particle, because
This is 5%-7% in the weight content that method cement of the invention accounts for raw material.In a specific embodiment, label can be used
For C30Cement.This label is meant that well known to those skilled in the art, and which is not described herein again.
In one embodiment, binder further includes soil consolidator, and by weight, soil consolidator is in content in the feed
Between 3%-5%.In the feed, some soil particles have been inevitably present.Soil particle will lead to strong after hardening of cement
Degradation is spent, this is problem very serious for high-speed railway subgrade.Applicant is creatively in the feed as a result,
It is added to soil consolidator, many soil particles are bonded together and forms high-intensitive big cured granulate.Certainly, cement can
To be further bonded together these cured granulates and first kind gravel particle and the second class gravel particle, to be formed together
High-intensitive graded broken stone layer.
In one embodiment, by weight, soil consolidator contains the aluminic acid of the silicate of 17%-22%, 25%-30%
Salt, the sulfate of 10%-15%, the silica of 8%-13%, the aluminium sulfate of 10%-13%, 3%-7% chloride and
The active calcium oxide of 4%-5%.Soil consolidator reacted with water generate aluminate, silicate also can with the metal in soil particle from
Son reaction.Active calcium oxide can react Ca (OH) with water2。Ca(OH)2It can be reacted with the metal ion of soil particle adsorption, and
And it thus generates and has generated a large amount of crystallization hyrates and strong rubber knot with higher-strength, chemical inertness and volume microdilatancy
The unformed gel of performance.Crystallizing hyrate becomes the skeleton of cured granulate, and unformed gel is filled between particle, greatly
It improves the intensity of graded broken stone layer greatly and significantly reduces its infiltration coefficient.Whole process is also consumed by large quantity of moisture, has
The construction for helping graded broken stone layer quickly carries out.
In one embodiment, in step 2, raw material is mixed with water；Then mixture is filled into anti-freeze expansion on earth
In layer and compress to form graded broken stone layer.
In a preferred embodiment, in step 2, gap filling agent is injected also into graded broken stone layer, gap is filled out
Agent is filled to be made of liquid reactive methacrylic resin and catalysis coagulator.Gap filling agent can be filled in graded broken stone layer
It is discharged in gap between particle and by moisture here, this facilitates the frost heave for further decreasing roadbed.Implement at one
In example, by weight, gap filling agent is between the content 5% to 7% in graded broken stone layer.
In one embodiment, in step 2, the first of raw material is obtained according to the thickness of ground water content, bottom anti-freeze expansion layer
Beginning ingredient, then repeatedly according to the thermal conductivity k of prepared graded broken stone layer, the solid-liquid phase change latent heat L of water, ground freezing index
The ingredient for deploying the raw material, until the jelly depth X of railway bedsMaximum greater than construction area freezes deeply.
In one embodiment, in step 2, the frost heaving amount Δ h1 for obtaining bottom anti-freeze expansion layer, grade are also tested by frost heave
The frost heaving amount Δ h3 of frost heaving amount Δ h2 and top anti-freeze expansion layer with metalling.Frost heaving amount Δ h1, frost heaving amount Δ h2 and frost heaving amount
The sum of Δ h3 is less than or equal to the maximum allowable frost heaving amount Δ h of the railway bed.Frost heave experiment is those skilled in the art institute
Well known, which is not described herein again.
Compared with the prior art, the advantages of the present invention are as follows: compared with prior art, expand fine grain in raw material
Content range, convenient for construction.
Specific embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1:
In Northeast China somewhere, most cold monthly mean temperature is -15 DEG C, belongs to severe cold area, it is 2.14 meters that maximum, which freezes depth,.Water
Solid-liquid phase change latent heat L be 334.56kJ/kg, ground freezing index F is 1515 DEG C of .d, and ground water content is by weight
18%.
The bottom anti-freeze expansion layer of railway bed is A, B group soil, and top anti-freeze expansion layer is concrete layer, in the raw material of graded broken stone layer
First kind gravel particle, partial size containing partial size between 0.5mm-30mm are less than the second class gravel particle and cement of 0.5mm.
It is deployed repeatedly, the material composition of obtained graded broken stone layer is as follows: by weight, the content 85% of first kind gravel particle,
The content 10% of second class gravel particle, cement content 5%.The thermal conductivity k of the graded broken stone layer made of this raw material is
0.573W/m.k。
Road structure are as follows: bottom anti-freeze expansion layer be with a thickness of 0.55 meter, graded broken stone layer with a thickness of 1.2 meters, push up antifreeze
Swollen layer with a thickness of 1.0 meters.It is computed and obtains: the jelly depth X of railway bedsIt is 2.75 meters, the maximum depth of freezing greater than this area is
2.14 rice.Learn that bottom anti-freeze expansion layer frost heaving amount Δ h1 is 0.28 millimeter, the frost heaving amount Δ h2 of graded broken stone layer is through frost heave experiment
3.2 millimeters, push up anti-freeze expansion layer frost heaving amount Δ h3 be 0 millimeter.Frost heaving amount Δ h1, frost heaving amount Δ h2 and frost heaving amount Δ h3 as a result,
The sum of be 3.48 millimeters.
After field experiment construction, measure: the jelly depth of roadbed is 2.71 meters, and frost heaving amount is 3.28 millimeters.Therefore, by this hair
The railway bed that bright method obtains meets roadbed frost damage deformation requirements.
Embodiment 2:
In Northeast China somewhere, most cold monthly mean temperature is -27.3 DEG C, belongs to severe cold area, it is 2.72 meters that maximum, which freezes depth,.
The solid-liquid phase change latent heat L of water is 334.56kJ/kg, and ground freezing index F is 2408 DEG C of .d, and ground water content is 28%.
The bottom anti-freeze expansion layer of railway bed is A, B group soil, and top anti-freeze expansion layer is concrete layer, in the raw material of graded broken stone layer
First kind gravel particle, partial size containing partial size between 0.5mm-30mm are less than the second class gravel particle of 0.5mm and soil is consolidated
Agent.Deployed repeatedly, the ingredient for obtaining raw material is as follows: by weight, the content 86% of first kind gravel particle, the second class is broken
Content 10%, the soil consolidator content 4% of stone particle.It is 0.685W/ by the thermal conductivity k that ground gradation metalling is made in this raw material
m.k。
Road structure are as follows: bottom anti-freeze expansion layer with a thickness of 0.48m, graded broken stone layer with a thickness of 1.0 meters, push up anti-freeze expansion layer
With a thickness of 2.0 meters.It is computed and learns, the jelly depth X of railway bedsIt is 3.48 meters, the maximum depth of freezing greater than this area is 2.72
Rice.Learn that bottom anti-freeze expansion layer frost heaving amount Δ h1 is 0.58 millimeter, the frost heaving amount Δ h2 of graded broken stone layer is 2.20 through frost heave experiment
Millimeter, the frost heaving amount Δ h3 for pushing up anti-freeze expansion layer are 0.0 millimeter.As a result, frost heaving amount Δ h1, frost heaving amount Δ h2 and frost heaving amount Δ h3 it
Be 2.78 millimeters.
After field experiment construction, measure: the jelly depth of roadbed is 3.35 meters, and frost heaving amount is 2.69 millimeters.Therefore, by this hair
The railway bed that bright method obtains meets roadbed frost damage deformation requirements.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.The invention is not limited to Wen Zhonggong
The specific embodiment opened, but include all technical solutions falling within the scope of the claims.
Claims (9)
1. railway bed method of construction, comprising the following steps:
Step 1: the ground water content in construction area is obtained；
Step 2: bottom anti-freeze expansion layer, graded broken stone layer are successively successively filled upwards on the ground in the construction area and is pushed up anti-
Frost heave layer；
In the step 2, the graded broken stone layer by include first kind gravel particle of the partial size between 0.5mm-30mm,
The raw material of second class gravel particle of the partial size less than 0.5mm and binder is made, wherein by weight, the second class rubble
Content of the particle in the raw material is between 6%-30%.
2. the method according to claim 1, wherein by weight, the binder includes cement, described
For content in raw material between 5%-7%, surplus is first kind gravel particle.
3. according to the method described in claim 2, it is characterized in that, the binder further includes soil consolidator, by weight, institute
Soil consolidator is stated in the content in the raw material between 3%-5%.
4. according to the method described in claim 3, it is characterized in that, by weight, the soil consolidator contains 17%-22%'s
Silicate, the aluminate of 25%-30%, the sulfate of 10%-15%, the silica of 8%-13%, 10%-13% sulphur aluminium
The calcium oxide of hydrochlorate, the chloride of 3%-7% and 4%-5%.
5. method according to any one of claims 1 to 4, which is characterized in that in the step 2, by the raw material
It is mixed with water；Then mixture is filled in the bottom anti-freeze expansion layer and is compressed to form the graded broken stone layer.
6. according to the method described in claim 5, it is characterized in that, in the step 2, also into the graded broken stone layer
Gap filling agent is injected, the gap filling agent is made of liquid reactive methacrylic resin and catalysis coagulator.
7. according to the method described in claim 6, it is characterized in that, by weight, the gap filling agent is in graded broken stone layer
In content 5% to 7% between.
8. method according to any one of claims 1 to 4, which is characterized in that in the step 2, according to describedly
Base water content, bottom anti-freeze expansion layer thickness obtain the Initial Composition of the raw material, then according to prepared graded broken stone layer
Thermal conductivity k, water solid-liquid phase change latent heat L, ground freezing index deploy the ingredient of the raw material repeatedly, until the railway bed
Jelly depth XsFreeze deeply greater than the maximum of construction area.
9. according to the method described in claim 8, it is characterized in that, in the step 2, also being tested by frost heave and obtaining institute
State the frost heaving amount Δ h3 of bottom anti-freeze expansion layer frost heaving amount Δ h1, the frost heaving amount Δ h2 of graded broken stone layer and top anti-freeze expansion layer, the jelly
The sum of bulk Δ h1, frost heaving amount Δ h2 and frost heaving amount Δ h3 are less than or equal to the maximum allowable frost heaving amount Δ h of the railway bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611000351.8A CN107142794B (en) | 2016-11-14 | 2016-11-14 | Railway bed method of construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611000351.8A CN107142794B (en) | 2016-11-14 | 2016-11-14 | Railway bed method of construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107142794A CN107142794A (en) | 2017-09-08 |
| CN107142794B true CN107142794B (en) | 2018-12-28 |
Family
ID=59783224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611000351.8A Active CN107142794B (en) | 2016-11-14 | 2016-11-14 | Railway bed method of construction |
Country Status (1)
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5519321B2 (en) * | 1972-11-24 | 1980-05-26 | ||
| CN103255694B (en) * | 2013-06-06 | 2015-09-30 | 中铁二院工程集团有限责任公司 | Frozen ground regions non-fragment orbit cutting bed of rapid transit railway structure |
| CN203795259U (en) * | 2014-02-20 | 2014-08-27 | 中铁第四勘察设计院集团有限公司 | High speed railway embankment structure in saline soil region |
| 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 |
| CN204738198U (en) * | 2015-05-04 | 2015-11-04 | 中国铁道科学研究院铁道建筑研究所 | Road bed |
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2016
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